/* Copyright (c) 2007-2011 Gluster, Inc. This file is part of GlusterFS. GlusterFS is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. GlusterFS is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . */ /** * xlators/cluster/stripe: * Stripe translator, stripes the data across its child nodes, * as per the options given in the volfile. The striping works * fairly simple. It writes files at different offset as per * calculation. So, 'ls -l' output at the real posix level will * show file size bigger than the actual size. But when one does * 'df' or 'du ', real size of the file on the server is shown. * * WARNING: * Stripe translator can't regenerate data if a child node gets disconnected. * So, no 'self-heal' for stripe. Hence the advice, use stripe only when its * very much necessary, or else, use it in combination with AFR, to have a * backup copy. */ #include #include "stripe.h" #include "libxlator.h" #include "byte-order.h" #include "statedump.h" struct volume_options options[]; int32_t stripe_sh_chown_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, struct iatt *preop, struct iatt *postop, dict_t *xdata) { int callcnt = -1; stripe_local_t *local = NULL; if (!this || !frame || !frame->local) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } local = frame->local; LOCK (&frame->lock); { callcnt = --local->call_count; } UNLOCK (&frame->lock); if (!callcnt) { STRIPE_STACK_DESTROY (frame); } out: return 0; } int32_t stripe_sh_make_entry_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, inode_t *inode, struct iatt *buf, struct iatt *preparent, struct iatt *postparent, dict_t *xdata) { stripe_local_t *local = NULL; call_frame_t *prev = NULL; if (!frame || !frame->local || !cookie || !this) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } prev = cookie; local = frame->local; STACK_WIND (frame, stripe_sh_chown_cbk, prev->this, prev->this->fops->setattr, &local->loc, &local->stbuf, (GF_SET_ATTR_UID | GF_SET_ATTR_GID), NULL); out: return 0; } int32_t stripe_entry_self_heal (call_frame_t *frame, xlator_t *this, stripe_local_t *local) { xlator_list_t *trav = NULL; call_frame_t *rframe = NULL; stripe_local_t *rlocal = NULL; stripe_private_t *priv = NULL; dict_t *xdata = NULL; int ret = 0; if (!local || !this || !frame) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } if (!(IA_ISREG (local->stbuf.ia_type) || IA_ISDIR (local->stbuf.ia_type))) return 0; priv = this->private; trav = this->children; rframe = copy_frame (frame); if (!rframe) { goto out; } rlocal = mem_get0 (this->local_pool); if (!rlocal) { goto out; } rframe->local = rlocal; rlocal->call_count = priv->child_count; loc_copy (&rlocal->loc, &local->loc); memcpy (&rlocal->stbuf, &local->stbuf, sizeof (struct iatt)); xdata = dict_new (); if (!xdata) goto out; ret = dict_set_static_bin (xdata, "gfid-req", local->stbuf.ia_gfid, 16); if (ret) gf_log (this->name, GF_LOG_WARNING, "%s: failed to set gfid-req", local->loc.path); while (trav) { if (IA_ISREG (local->stbuf.ia_type)) { STACK_WIND (rframe, stripe_sh_make_entry_cbk, trav->xlator, trav->xlator->fops->mknod, &local->loc, st_mode_from_ia (local->stbuf.ia_prot, local->stbuf.ia_type), 0, 0, xdata); } if (IA_ISDIR (local->stbuf.ia_type)) { STACK_WIND (rframe, stripe_sh_make_entry_cbk, trav->xlator, trav->xlator->fops->mkdir, &local->loc, st_mode_from_ia (local->stbuf.ia_prot, local->stbuf.ia_type), 0, xdata); } trav = trav->next; } if (xdata) dict_unref (xdata); return 0; out: if (rframe) STRIPE_STACK_DESTROY (rframe); if (xdata) dict_unref (xdata); return 0; } int32_t stripe_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, inode_t *inode, struct iatt *buf, dict_t *xdata, struct iatt *postparent) { int32_t callcnt = 0; stripe_local_t *local = NULL; call_frame_t *prev = NULL; int ret = 0; if (!this || !frame || !frame->local || !cookie) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } prev = cookie; local = frame->local; LOCK (&frame->lock); { callcnt = --local->call_count; if (op_ret == -1) { if (op_errno != ENOENT) gf_log (this->name, GF_LOG_DEBUG, "%s returned error %s", prev->this->name, strerror (op_errno)); if (local->op_errno != ESTALE) local->op_errno = op_errno; if (((op_errno != ENOENT) && (op_errno != ENOTCONN)) || (prev->this == FIRST_CHILD (this))) local->failed = 1; if (op_errno == ENOENT) local->entry_self_heal_needed = 1; } if (op_ret >= 0) { local->op_ret = 0; if (IA_ISREG (buf->ia_type)) { ret = stripe_ctx_handle (this, prev, local, xdata); if (ret) gf_log (this->name, GF_LOG_ERROR, "Error getting fctx info from" " dict"); } if (FIRST_CHILD(this) == prev->this) { local->stbuf = *buf; local->postparent = *postparent; local->inode = inode_ref (inode); if (xdata) local->xdata = dict_ref (xdata); if (local->xattr) { stripe_aggregate_xattr (local->xdata, local->xattr); dict_unref (local->xattr); local->xattr = NULL; } } if (!local->xdata && !local->xattr) { local->xattr = dict_ref (xdata); } else if (local->xdata) { stripe_aggregate_xattr (local->xdata, xdata); } else if (local->xattr) { stripe_aggregate_xattr (local->xattr, xdata); } local->stbuf_blocks += buf->ia_blocks; local->postparent_blocks += postparent->ia_blocks; if (local->stbuf_size < buf->ia_size) local->stbuf_size = buf->ia_size; if (local->postparent_size < postparent->ia_size) local->postparent_size = postparent->ia_size; if (uuid_is_null (local->ia_gfid)) uuid_copy (local->ia_gfid, buf->ia_gfid); /* Make sure the gfid on all the nodes are same */ if (uuid_compare (local->ia_gfid, buf->ia_gfid)) { gf_log (this->name, GF_LOG_WARNING, "%s: gfid different on subvolume %s", local->loc.path, prev->this->name); } } } UNLOCK (&frame->lock); if (!callcnt) { if (local->op_ret == 0 && local->entry_self_heal_needed && !uuid_is_null (local->loc.inode->gfid)) stripe_entry_self_heal (frame, this, local); if (local->failed) local->op_ret = -1; if (local->op_ret != -1) { local->stbuf.ia_blocks = local->stbuf_blocks; local->stbuf.ia_size = local->stbuf_size; local->postparent.ia_blocks = local->postparent_blocks; local->postparent.ia_size = local->postparent_size; inode_ctx_put (local->inode, this, (uint64_t) (long)local->fctx); } STRIPE_STACK_UNWIND (lookup, frame, local->op_ret, local->op_errno, local->inode, &local->stbuf, local->xdata, &local->postparent); } out: return 0; } int32_t stripe_lookup (call_frame_t *frame, xlator_t *this, loc_t *loc, dict_t *xdata) { stripe_local_t *local = NULL; xlator_list_t *trav = NULL; stripe_private_t *priv = NULL; int32_t op_errno = EINVAL; int64_t filesize = 0; int ret = 0; uint64_t tmpctx = 0; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (loc, err); VALIDATE_OR_GOTO (loc->path, err); VALIDATE_OR_GOTO (loc->inode, err); priv = this->private; trav = this->children; /* Initialization */ local = mem_get0 (this->local_pool); if (!local) { op_errno = ENOMEM; goto err; } local->op_ret = -1; frame->local = local; loc_copy (&local->loc, loc); inode_ctx_get (local->inode, this, &tmpctx); if (tmpctx) local->fctx = (stripe_fd_ctx_t*) (long)tmpctx; /* quick-read friendly changes */ if (xdata && dict_get (xdata, GF_CONTENT_KEY)) { ret = dict_get_int64 (xdata, GF_CONTENT_KEY, &filesize); if (!ret && (filesize > priv->block_size)) dict_del (xdata, GF_CONTENT_KEY); } /* get stripe-size xattr on lookup. This would be required for * open/read/write/pathinfo calls. Hence we send down the request * even when type == IA_INVAL */ if (xdata && (IA_ISREG (loc->inode->ia_type) || (loc->inode->ia_type == IA_INVAL))) { ret = stripe_xattr_request_build (this, xdata, 8, 4, 4); if (ret) gf_log (this->name , GF_LOG_ERROR, "Failed to build" " xattr request for %s", loc->path); } /* Everytime in stripe lookup, all child nodes should be looked up */ local->call_count = priv->child_count; while (trav) { STACK_WIND (frame, stripe_lookup_cbk, trav->xlator, trav->xlator->fops->lookup, loc, xdata); trav = trav->next; } return 0; err: STRIPE_STACK_UNWIND (lookup, frame, -1, op_errno, NULL, NULL, NULL, NULL); return 0; } int32_t stripe_stat_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, struct iatt *buf, dict_t *xdata) { int32_t callcnt = 0; stripe_local_t *local = NULL; call_frame_t *prev = NULL; if (!this || !frame || !frame->local || !cookie) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } prev = cookie; local = frame->local; LOCK (&frame->lock); { callcnt = --local->call_count; if (op_ret == -1) { gf_log (this->name, GF_LOG_DEBUG, "%s returned error %s", prev->this->name, strerror (op_errno)); local->op_errno = op_errno; if ((op_errno != ENOENT) || (prev->this == FIRST_CHILD (this))) local->failed = 1; } if (op_ret == 0) { local->op_ret = 0; if (FIRST_CHILD(this) == prev->this) { local->stbuf = *buf; } local->stbuf_blocks += buf->ia_blocks; if (local->stbuf_size < buf->ia_size) local->stbuf_size = buf->ia_size; } } UNLOCK (&frame->lock); if (!callcnt) { if (local->failed) local->op_ret = -1; if (local->op_ret != -1) { local->stbuf.ia_size = local->stbuf_size; local->stbuf.ia_blocks = local->stbuf_blocks; } STRIPE_STACK_UNWIND (stat, frame, local->op_ret, local->op_errno, &local->stbuf, NULL); } out: return 0; } int32_t stripe_stat (call_frame_t *frame, xlator_t *this, loc_t *loc, dict_t *xdata) { xlator_list_t *trav = NULL; stripe_local_t *local = NULL; stripe_private_t *priv = NULL; int32_t op_errno = EINVAL; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (loc, err); VALIDATE_OR_GOTO (loc->path, err); VALIDATE_OR_GOTO (loc->inode, err); priv = this->private; trav = this->children; if (priv->first_child_down) { op_errno = ENOTCONN; goto err; } /* Initialization */ local = mem_get0 (this->local_pool); if (!local) { op_errno = ENOMEM; goto err; } local->op_ret = -1; frame->local = local; local->call_count = priv->child_count; while (trav) { STACK_WIND (frame, stripe_stat_cbk, trav->xlator, trav->xlator->fops->stat, loc, NULL); trav = trav->next; } return 0; err: STRIPE_STACK_UNWIND (stat, frame, -1, op_errno, NULL, NULL); return 0; } int32_t stripe_statfs_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, struct statvfs *stbuf, dict_t *xdata) { stripe_local_t *local = NULL; int32_t callcnt = 0; if (!this || !frame || !frame->local) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } local = frame->local; LOCK(&frame->lock); { callcnt = --local->call_count; if (op_ret && (op_errno != ENOTCONN)) { local->op_errno = op_errno; } if (op_ret == 0) { struct statvfs *dict_buf = &local->statvfs_buf; dict_buf->f_bsize = stbuf->f_bsize; dict_buf->f_frsize = stbuf->f_frsize; dict_buf->f_blocks += stbuf->f_blocks; dict_buf->f_bfree += stbuf->f_bfree; dict_buf->f_bavail += stbuf->f_bavail; dict_buf->f_files += stbuf->f_files; dict_buf->f_ffree += stbuf->f_ffree; dict_buf->f_favail += stbuf->f_favail; dict_buf->f_fsid = stbuf->f_fsid; dict_buf->f_flag = stbuf->f_flag; dict_buf->f_namemax = stbuf->f_namemax; local->op_ret = 0; } } UNLOCK (&frame->lock); if (!callcnt) { STRIPE_STACK_UNWIND (statfs, frame, local->op_ret, local->op_errno, &local->statvfs_buf, NULL); } out: return 0; } int32_t stripe_statfs (call_frame_t *frame, xlator_t *this, loc_t *loc, dict_t *xdata) { stripe_local_t *local = NULL; xlator_list_t *trav = NULL; stripe_private_t *priv = NULL; int32_t op_errno = EINVAL; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (loc, err); trav = this->children; priv = this->private; /* Initialization */ local = mem_get0 (this->local_pool); if (!local) { op_errno = ENOMEM; goto err; } local->op_ret = -1; local->op_errno = ENOTCONN; frame->local = local; local->call_count = priv->child_count; while (trav) { STACK_WIND (frame, stripe_statfs_cbk, trav->xlator, trav->xlator->fops->statfs, loc, NULL); trav = trav->next; } return 0; err: STRIPE_STACK_UNWIND (statfs, frame, -1, op_errno, NULL, NULL); return 0; } int32_t stripe_truncate_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, struct iatt *prebuf, struct iatt *postbuf, dict_t *xdata) { int32_t callcnt = 0; stripe_local_t *local = NULL; call_frame_t *prev = NULL; if (!this || !frame || !frame->local || !cookie) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } prev = cookie; local = frame->local; LOCK (&frame->lock); { callcnt = --local->call_count; if (op_ret == -1) { gf_log (this->name, GF_LOG_DEBUG, "%s returned error %s", prev->this->name, strerror (op_errno)); local->op_errno = op_errno; if ((op_errno != ENOENT) || (prev->this == FIRST_CHILD (this))) local->failed = 1; } if (op_ret == 0) { local->op_ret = 0; if (FIRST_CHILD(this) == prev->this) { local->pre_buf = *prebuf; local->post_buf = *postbuf; } local->prebuf_blocks += prebuf->ia_blocks; local->postbuf_blocks += postbuf->ia_blocks; if (local->prebuf_size < prebuf->ia_size) local->prebuf_size = prebuf->ia_size; if (local->postbuf_size < postbuf->ia_size) local->postbuf_size = postbuf->ia_size; } } UNLOCK (&frame->lock); if (!callcnt) { if (local->failed) local->op_ret = -1; if (local->op_ret != -1) { local->pre_buf.ia_blocks = local->prebuf_blocks; local->pre_buf.ia_size = local->prebuf_size; local->post_buf.ia_blocks = local->postbuf_blocks; local->post_buf.ia_size = local->postbuf_size; } STRIPE_STACK_UNWIND (truncate, frame, local->op_ret, local->op_errno, &local->pre_buf, &local->post_buf, NULL); } out: return 0; } int32_t stripe_truncate (call_frame_t *frame, xlator_t *this, loc_t *loc, off_t offset, dict_t *xdata) { xlator_list_t *trav = NULL; stripe_local_t *local = NULL; stripe_private_t *priv = NULL; int32_t op_errno = EINVAL; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (loc, err); VALIDATE_OR_GOTO (loc->path, err); VALIDATE_OR_GOTO (loc->inode, err); priv = this->private; trav = this->children; if (priv->first_child_down) { op_errno = ENOTCONN; goto err; } /* Initialization */ local = mem_get0 (this->local_pool); if (!local) { op_errno = ENOMEM; goto err; } local->op_ret = -1; frame->local = local; local->call_count = priv->child_count; while (trav) { STACK_WIND (frame, stripe_truncate_cbk, trav->xlator, trav->xlator->fops->truncate, loc, offset, NULL); trav = trav->next; } return 0; err: STRIPE_STACK_UNWIND (truncate, frame, -1, op_errno, NULL, NULL, NULL); return 0; } int32_t stripe_setattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, struct iatt *preop, struct iatt *postop, dict_t *xdata) { int32_t callcnt = 0; stripe_local_t *local = NULL; call_frame_t *prev = NULL; if (!this || !frame || !frame->local || !cookie) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } prev = cookie; local = frame->local; LOCK (&frame->lock); { callcnt = --local->call_count; if (op_ret == -1) { gf_log (this->name, GF_LOG_DEBUG, "%s returned error %s", prev->this->name, strerror (op_errno)); local->op_errno = op_errno; if ((op_errno != ENOENT) || (prev->this == FIRST_CHILD (this))) local->failed = 1; } if (op_ret == 0) { local->op_ret = 0; if (FIRST_CHILD(this) == prev->this) { local->pre_buf = *preop; local->post_buf = *postop; } local->prebuf_blocks += preop->ia_blocks; local->postbuf_blocks += postop->ia_blocks; if (local->prebuf_size < preop->ia_size) local->prebuf_size = preop->ia_size; if (local->postbuf_size < postop->ia_size) local->postbuf_size = postop->ia_size; } } UNLOCK (&frame->lock); if (!callcnt) { if (local->failed) local->op_ret = -1; if (local->op_ret != -1) { local->pre_buf.ia_blocks = local->prebuf_blocks; local->pre_buf.ia_size = local->prebuf_size; local->post_buf.ia_blocks = local->postbuf_blocks; local->post_buf.ia_size = local->postbuf_size; } STRIPE_STACK_UNWIND (setattr, frame, local->op_ret, local->op_errno, &local->pre_buf, &local->post_buf, NULL); } out: return 0; } int32_t stripe_setattr (call_frame_t *frame, xlator_t *this, loc_t *loc, struct iatt *stbuf, int32_t valid, dict_t *xdata) { xlator_list_t *trav = NULL; stripe_local_t *local = NULL; stripe_private_t *priv = NULL; int32_t op_errno = EINVAL; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (loc, err); VALIDATE_OR_GOTO (loc->path, err); VALIDATE_OR_GOTO (loc->inode, err); priv = this->private; trav = this->children; if (priv->first_child_down) { op_errno = ENOTCONN; goto err; } /* Initialization */ local = mem_get0 (this->local_pool); if (!local) { op_errno = ENOMEM; goto err; } local->op_ret = -1; frame->local = local; if (!IA_ISDIR (loc->inode->ia_type) && !IA_ISREG (loc->inode->ia_type)) { local->call_count = 1; STACK_WIND (frame, stripe_setattr_cbk, FIRST_CHILD (this), FIRST_CHILD (this)->fops->setattr, loc, stbuf, valid, NULL); return 0; } local->call_count = priv->child_count; while (trav) { STACK_WIND (frame, stripe_setattr_cbk, trav->xlator, trav->xlator->fops->setattr, loc, stbuf, valid, NULL); trav = trav->next; } return 0; err: STRIPE_STACK_UNWIND (setattr, frame, -1, op_errno, NULL, NULL, NULL); return 0; } int32_t stripe_fsetattr (call_frame_t *frame, xlator_t *this, fd_t *fd, struct iatt *stbuf, int32_t valid, dict_t *xdata) { stripe_local_t *local = NULL; stripe_private_t *priv = NULL; xlator_list_t *trav = NULL; int32_t op_errno = EINVAL; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (fd, err); VALIDATE_OR_GOTO (fd->inode, err); priv = this->private; trav = this->children; /* Initialization */ local = mem_get0 (this->local_pool); if (!local) { op_errno = ENOMEM; goto err; } local->op_ret = -1; frame->local = local; local->call_count = priv->child_count; while (trav) { STACK_WIND (frame, stripe_setattr_cbk, trav->xlator, trav->xlator->fops->fsetattr, fd, stbuf, valid, NULL); trav = trav->next; } return 0; err: STRIPE_STACK_UNWIND (fsetattr, frame, -1, op_errno, NULL, NULL, NULL); return 0; } int32_t stripe_stack_rename_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, struct iatt *buf, struct iatt *preoldparent, struct iatt *postoldparent, struct iatt *prenewparent, struct iatt *postnewparent, dict_t *xdata) { int32_t callcnt = 0; stripe_local_t *local = NULL; call_frame_t *prev = NULL; if (!this || !frame || !frame->local || !cookie) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } prev = cookie; local = frame->local; LOCK (&frame->lock); { callcnt = --local->call_count; if (op_ret == -1) { gf_log (this->name, GF_LOG_DEBUG, "%s returned error %s", prev->this->name, strerror (op_errno)); local->op_errno = op_errno; if ((op_errno != ENOENT) || (prev->this == FIRST_CHILD (this))) local->failed = 1; } if (op_ret == 0) { local->op_ret = 0; local->stbuf.ia_blocks += buf->ia_blocks; local->preparent.ia_blocks += preoldparent->ia_blocks; local->postparent.ia_blocks += postoldparent->ia_blocks; local->pre_buf.ia_blocks += prenewparent->ia_blocks; local->post_buf.ia_blocks += postnewparent->ia_blocks; if (local->stbuf.ia_size < buf->ia_size) local->stbuf.ia_size = buf->ia_size; if (local->preparent.ia_size < preoldparent->ia_size) local->preparent.ia_size = preoldparent->ia_size; if (local->postparent.ia_size < postoldparent->ia_size) local->postparent.ia_size = postoldparent->ia_size; if (local->pre_buf.ia_size < prenewparent->ia_size) local->pre_buf.ia_size = prenewparent->ia_size; if (local->post_buf.ia_size < postnewparent->ia_size) local->post_buf.ia_size = postnewparent->ia_size; } } UNLOCK (&frame->lock); if (!callcnt) { if (local->failed) local->op_ret = -1; STRIPE_STACK_UNWIND (rename, frame, local->op_ret, local->op_errno, &local->stbuf, &local->preparent, &local->postparent, &local->pre_buf, &local->post_buf, NULL); } out: return 0; } int32_t stripe_first_rename_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, struct iatt *buf, struct iatt *preoldparent, struct iatt *postoldparent, struct iatt *prenewparent, struct iatt *postnewparent, dict_t *xdata) { stripe_local_t *local = NULL; xlator_list_t *trav = NULL; if (!this || !frame || !frame->local) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); op_errno = EINVAL; goto unwind; } if (op_ret == -1) { goto unwind; } local = frame->local; trav = this->children; local->stbuf = *buf; local->preparent = *preoldparent; local->postparent = *postoldparent; local->pre_buf = *prenewparent; local->post_buf = *postnewparent; local->op_ret = 0; local->call_count--; trav = trav->next; /* Skip first child */ while (trav) { STACK_WIND (frame, stripe_stack_rename_cbk, trav->xlator, trav->xlator->fops->rename, &local->loc, &local->loc2, NULL); trav = trav->next; } return 0; unwind: STRIPE_STACK_UNWIND (rename, frame, -1, op_errno, buf, preoldparent, postoldparent, prenewparent, postnewparent, NULL); return 0; } int32_t stripe_rename (call_frame_t *frame, xlator_t *this, loc_t *oldloc, loc_t *newloc, dict_t *xdata) { stripe_private_t *priv = NULL; stripe_local_t *local = NULL; xlator_list_t *trav = NULL; int32_t op_errno = EINVAL; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (oldloc, err); VALIDATE_OR_GOTO (oldloc->path, err); VALIDATE_OR_GOTO (oldloc->inode, err); VALIDATE_OR_GOTO (newloc, err); priv = this->private; trav = this->children; /* If any one node is down, don't allow rename */ if (priv->nodes_down) { op_errno = ENOTCONN; goto err; } /* Initialization */ local = mem_get0 (this->local_pool); if (!local) { op_errno = ENOMEM; goto err; } local->op_ret = -1; loc_copy (&local->loc, oldloc); loc_copy (&local->loc2, newloc); local->call_count = priv->child_count; frame->local = local; STACK_WIND (frame, stripe_first_rename_cbk, trav->xlator, trav->xlator->fops->rename, oldloc, newloc, NULL); return 0; err: STRIPE_STACK_UNWIND (rename, frame, -1, op_errno, NULL, NULL, NULL, NULL, NULL, NULL); return 0; } int32_t stripe_first_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, struct iatt *preparent, struct iatt *postparent, dict_t *xdata) { stripe_local_t *local = NULL; call_frame_t *prev = NULL; if (!this || !frame || !frame->local || !cookie) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } prev = cookie; local = frame->local; if (op_ret == -1) { gf_log (this->name, GF_LOG_DEBUG, "%s returned %s", prev->this->name, strerror (op_errno)); goto out; } local->op_ret = 0; local->preparent = *preparent; local->postparent = *postparent; local->preparent_blocks += preparent->ia_blocks; local->postparent_blocks += postparent->ia_blocks; STRIPE_STACK_UNWIND(unlink, frame, local->op_ret, local->op_errno, &local->preparent, &local->postparent, xdata); return 0; out: STRIPE_STACK_UNWIND (unlink, frame, -1, op_errno, NULL, NULL, NULL); return 0; } int32_t stripe_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, struct iatt *preparent, struct iatt *postparent, dict_t *xdata) { int32_t callcnt = 0; stripe_local_t *local = NULL; call_frame_t *prev = NULL; if (!this || !frame || !frame->local || !cookie) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } prev = cookie; local = frame->local; LOCK (&frame->lock); { callcnt = --local->call_count; if (op_ret == -1) { gf_log (this->name, GF_LOG_DEBUG, "%s returned %s", prev->this->name, strerror (op_errno)); local->op_errno = op_errno; if (op_errno != ENOENT) { local->failed = 1; local->op_ret = op_ret; } } } UNLOCK (&frame->lock); if (callcnt == 1) { if (local->failed) { op_errno = local->op_errno; goto out; } STACK_WIND(frame, stripe_first_unlink_cbk, FIRST_CHILD (this), FIRST_CHILD (this)->fops->unlink, &local->loc, local->xflag, local->xdata); } return 0; out: STRIPE_STACK_UNWIND (unlink, frame, -1, op_errno, NULL, NULL, NULL); return 0; } int32_t stripe_unlink (call_frame_t *frame, xlator_t *this, loc_t *loc, int xflag, dict_t *xdata) { xlator_list_t *trav = NULL; stripe_local_t *local = NULL; stripe_private_t *priv = NULL; int32_t op_errno = EINVAL; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (loc, err); VALIDATE_OR_GOTO (loc->path, err); VALIDATE_OR_GOTO (loc->inode, err); priv = this->private; trav = this->children; if (priv->first_child_down) { op_errno = ENOTCONN; goto err; } /* Don't unlink a file if a node is down */ if (priv->nodes_down) { op_errno = ENOTCONN; goto err; } /* Initialization */ local = mem_get0 (this->local_pool); if (!local) { op_errno = ENOMEM; goto err; } local->op_ret = -1; loc_copy (&local->loc, loc); local->xflag = xflag; if (xdata) local->xdata = dict_ref (xdata); frame->local = local; local->call_count = priv->child_count; trav = trav->next; /* Skip the first child */ while (trav) { STACK_WIND (frame, stripe_unlink_cbk, trav->xlator, trav->xlator->fops->unlink, loc, xflag, xdata); trav = trav->next; } return 0; err: STRIPE_STACK_UNWIND (unlink, frame, -1, op_errno, NULL, NULL, NULL); return 0; } int32_t stripe_first_rmdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno,struct iatt *preparent, struct iatt *postparent, dict_t *xdata) { stripe_local_t *local = NULL; if (!this || !frame || !frame->local) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); op_errno = EINVAL; goto err; } if (op_ret == -1) { goto err; } local = frame->local; local->op_ret = 0; local->call_count--; /* First child successful */ local->preparent = *preparent; local->postparent = *postparent; local->preparent_size = preparent->ia_size; local->postparent_size = postparent->ia_size; local->preparent_blocks += preparent->ia_blocks; local->postparent_blocks += postparent->ia_blocks; STRIPE_STACK_UNWIND (rmdir, frame, local->op_ret, local->op_errno, &local->preparent, &local->postparent, xdata); return 0; err: STRIPE_STACK_UNWIND (rmdir, frame, op_ret, op_errno, NULL, NULL, NULL); return 0; } int32_t stripe_rmdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, struct iatt *preparent, struct iatt *postparent, dict_t *xdata) { int32_t callcnt = 0; stripe_local_t *local = NULL; call_frame_t *prev = NULL; if (!this || !frame || !frame->local || !cookie) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } prev = cookie; local = frame->local; LOCK (&frame->lock); { callcnt = --local->call_count; if (op_ret == -1) { gf_log (this->name, GF_LOG_DEBUG, "%s returned %s", prev->this->name, strerror (op_errno)); if (op_errno != ENOENT) local->failed = 1; } } UNLOCK (&frame->lock); if (callcnt == 1) { if (local->failed) goto out; STACK_WIND (frame, stripe_first_rmdir_cbk, FIRST_CHILD (this), FIRST_CHILD (this)->fops->rmdir, &local->loc, local->flags, NULL); } return 0; out: STRIPE_STACK_UNWIND (rmdir, frame, -1, op_errno, NULL, NULL, NULL); return 0; } int32_t stripe_rmdir (call_frame_t *frame, xlator_t *this, loc_t *loc, int flags, dict_t *xdata) { xlator_list_t *trav = NULL; stripe_local_t *local = NULL; stripe_private_t *priv = NULL; int32_t op_errno = EINVAL; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (loc, err); VALIDATE_OR_GOTO (loc->path, err); VALIDATE_OR_GOTO (loc->inode, err); priv = this->private; trav = this->children; /* don't delete a directory if any of the subvolume is down */ if (priv->nodes_down) { op_errno = ENOTCONN; goto err; } /* Initialization */ local = mem_get0 (this->local_pool); if (!local) { op_errno = ENOMEM; goto err; } local->op_ret = -1; frame->local = local; loc_copy (&local->loc, loc); local->flags = flags; local->call_count = priv->child_count; trav = trav->next; /* skip the first child */ while (trav) { STACK_WIND (frame, stripe_rmdir_cbk, trav->xlator, trav->xlator->fops->rmdir, loc, flags, NULL); trav = trav->next; } return 0; err: STRIPE_STACK_UNWIND (rmdir, frame, -1, op_errno, NULL, NULL, NULL); return 0; } int32_t stripe_mknod_ifreg_fail_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, struct iatt *preparent, struct iatt *postparent, dict_t *xdata) { int32_t callcnt = 0; stripe_local_t *local = NULL; if (!this || !frame || !frame->local) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } local = frame->local; LOCK (&frame->lock); { callcnt = --local->call_count; } UNLOCK (&frame->lock); if (!callcnt) { STRIPE_STACK_UNWIND (mknod, frame, local->op_ret, local->op_errno, local->inode, &local->stbuf, &local->preparent, &local->postparent, NULL); } out: return 0; } /** */ int32_t stripe_mknod_ifreg_setxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, dict_t *xdata) { int32_t callcnt = 0; stripe_local_t *local = NULL; stripe_private_t *priv = NULL; xlator_list_t *trav = NULL; call_frame_t *prev = NULL; if (!this || !frame || !frame->local || !cookie) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } prev = cookie; priv = this->private; local = frame->local; LOCK (&frame->lock); { callcnt = --local->call_count; if (op_ret == -1) { gf_log (this->name, GF_LOG_DEBUG, "%s returned error %s", prev->this->name, strerror (op_errno)); local->op_ret = -1; local->op_errno = op_errno; } } UNLOCK (&frame->lock); if (!callcnt) { if (local->op_ret == -1) { local->call_count = priv->child_count; while (trav) { STACK_WIND (frame, stripe_mknod_ifreg_fail_unlink_cbk, trav->xlator, trav->xlator->fops->unlink, &local->loc, 0, NULL); trav = trav->next; } return 0; } STRIPE_STACK_UNWIND (mknod, frame, local->op_ret, local->op_errno, local->inode, &local->stbuf, &local->preparent, &local->postparent, NULL); } out: return 0; } int32_t stripe_mknod_ifreg_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, inode_t *inode, struct iatt *buf, struct iatt *preparent, struct iatt *postparent, dict_t *xdata) { int32_t callcnt = 0; stripe_local_t *local = NULL; stripe_private_t *priv = NULL; call_frame_t *prev = NULL; xlator_list_t *trav = NULL; stripe_fd_ctx_t *fctx = NULL; if (!this || !frame || !frame->local || !cookie) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } prev = cookie; priv = this->private; local = frame->local; LOCK (&frame->lock); { callcnt = --local->call_count; if (op_ret == -1) { gf_log (this->name, GF_LOG_DEBUG, "%s returned error %s", prev->this->name, strerror (op_errno)); if ((op_errno != ENOENT) || (prev->this == FIRST_CHILD (this))) local->failed = 1; local->op_errno = op_errno; } if (op_ret >= 0) { local->op_ret = op_ret; /* Can be used as a mechanism to understand if mknod was successful in at least one place */ if (uuid_is_null (local->ia_gfid)) uuid_copy (local->ia_gfid, buf->ia_gfid); local->stbuf_blocks += buf->ia_blocks; local->preparent_blocks += preparent->ia_blocks; local->postparent_blocks += postparent->ia_blocks; if (local->stbuf_size < buf->ia_size) local->stbuf_size = buf->ia_size; if (local->preparent_size < preparent->ia_size) local->preparent_size = preparent->ia_size; if (local->postparent_size < postparent->ia_size) local->postparent_size = postparent->ia_size; } } UNLOCK (&frame->lock); if (!callcnt) { if (local->failed) local->op_ret = -1; if ((local->op_ret == -1) && !uuid_is_null (local->ia_gfid)) { /* ia_gfid set means, at least on one node 'mknod' is successful */ local->call_count = priv->child_count; trav = this->children; while (trav) { STACK_WIND (frame, stripe_mknod_ifreg_fail_unlink_cbk, trav->xlator, trav->xlator->fops->unlink, &local->loc, 0, NULL); trav = trav->next; } return 0; } if (local->op_ret != -1) { local->preparent.ia_blocks = local->preparent_blocks; local->preparent.ia_size = local->preparent_size; local->postparent.ia_blocks = local->postparent_blocks; local->postparent.ia_size = local->postparent_size; local->stbuf.ia_size = local->stbuf_size; local->stbuf.ia_blocks = local->stbuf_blocks; fctx = GF_CALLOC (1, sizeof (stripe_fd_ctx_t), gf_stripe_mt_stripe_fd_ctx_t); if (!fctx) { local->op_ret = -1; local->op_errno = ENOMEM; goto unwind; } fctx->stripe_size = local->stripe_size; fctx->stripe_count = priv->child_count; fctx->static_array = 1; fctx->xl_array = priv->xl_array; inode_ctx_put (local->inode, this, (uint64_t)(long)fctx); } unwind: STRIPE_STACK_UNWIND (mknod, frame, local->op_ret, local->op_errno, local->inode, &local->stbuf, &local->preparent, &local->postparent, NULL); } out: return 0; } int32_t stripe_mknod_first_ifreg_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, inode_t *inode, struct iatt *buf, struct iatt *preparent, struct iatt *postparent, dict_t *xdata) { stripe_local_t *local = NULL; stripe_private_t *priv = NULL; call_frame_t *prev = NULL; xlator_list_t *trav = NULL; int i = 1; dict_t *dict = NULL; int ret = 0; int need_unref = 0; if (!this || !frame || !frame->local || !cookie) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } prev = cookie; priv = this->private; local = frame->local; trav = this->children; local->call_count--; if (op_ret == -1) { gf_log (this->name, GF_LOG_DEBUG, "%s returned error %s", prev->this->name, strerror (op_errno)); local->failed = 1; local->op_errno = op_errno; goto out; } local->op_ret = op_ret; local->stbuf = *buf; local->preparent = *preparent; local->postparent = *postparent; if (uuid_is_null (local->ia_gfid)) uuid_copy (local->ia_gfid, buf->ia_gfid); local->preparent.ia_blocks = local->preparent_blocks; local->preparent.ia_size = local->preparent_size; local->postparent.ia_blocks = local->postparent_blocks; local->postparent.ia_size = local->postparent_size; local->stbuf.ia_size = local->stbuf_size; local->stbuf.ia_blocks = local->stbuf_blocks; trav = trav->next; while (trav) { if (priv->xattr_supported) { dict = dict_new (); if (!dict) { gf_log (this->name, GF_LOG_ERROR, "failed to allocate dict %s", local->loc.path); } need_unref = 1; dict_copy (local->xattr, dict); ret = stripe_xattr_request_build (this, dict, local->stripe_size, priv->child_count, i); if (ret) gf_log (this->name, GF_LOG_ERROR, "Failed to build xattr request"); } else { dict = local->xattr; } STACK_WIND (frame, stripe_mknod_ifreg_cbk, trav->xlator, trav->xlator->fops->mknod, &local->loc, local->mode, local->rdev, 0, dict); trav = trav->next; i++; if (dict && need_unref) dict_unref (dict); } return 0; out: STRIPE_STACK_UNWIND (mknod, frame, op_ret, op_errno, NULL, NULL, NULL, NULL, NULL); return 0; } int32_t stripe_single_mknod_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, inode_t *inode, struct iatt *buf, struct iatt *preparent, struct iatt *postparent, dict_t *xdata) { STRIPE_STACK_UNWIND (mknod, frame, op_ret, op_errno, inode, buf, preparent, postparent, xdata); return 0; } int stripe_mknod (call_frame_t *frame, xlator_t *this, loc_t *loc, mode_t mode, dev_t rdev, mode_t umask, dict_t *xdata) { stripe_private_t *priv = NULL; stripe_local_t *local = NULL; int32_t op_errno = EINVAL; int32_t i = 0; char size_key[256] = {0,}; char index_key[256] = {0,}; char count_key[256] = {0,}; dict_t *dict = NULL; int ret = 0; int need_unref = 0; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (loc, err); VALIDATE_OR_GOTO (loc->path, err); VALIDATE_OR_GOTO (loc->inode, err); priv = this->private; if (priv->first_child_down) { op_errno = ENOTCONN; goto err; } if (S_ISREG(mode)) { /* NOTE: on older kernels (older than 2.6.9), creat() fops is sent as mknod() + open(). Hence handling S_IFREG files is necessary */ if (priv->nodes_down) { gf_log (this->name, GF_LOG_WARNING, "Some node down, returning EIO"); op_errno = EIO; goto err; } /* Initialization */ local = mem_get0 (this->local_pool); if (!local) { op_errno = ENOMEM; goto err; } local->op_ret = -1; local->op_errno = ENOTCONN; local->stripe_size = stripe_get_matching_bs (loc->path, priv); frame->local = local; local->inode = inode_ref (loc->inode); loc_copy (&local->loc, loc); local->xattr = dict_copy_with_ref (xdata, NULL); local->mode = mode; local->umask = umask; local->rdev = rdev; /* Everytime in stripe lookup, all child nodes should be looked up */ local->call_count = priv->child_count; /* Send a setxattr request to nodes where the files are created */ sprintf (size_key, "trusted.%s.stripe-size", this->name); sprintf (count_key, "trusted.%s.stripe-count", this->name); sprintf (index_key, "trusted.%s.stripe-index", this->name); if (priv->xattr_supported) { dict = dict_new (); if (!dict) { gf_log (this->name, GF_LOG_ERROR, "failed to allocate dict %s", loc->path); } need_unref = 1; dict_copy (xdata, dict); ret = stripe_xattr_request_build (this, dict, local->stripe_size, priv->child_count, i); if (ret) gf_log (this->name, GF_LOG_ERROR, "failed to build xattr request"); } else { dict = xdata; } STACK_WIND (frame, stripe_mknod_first_ifreg_cbk, FIRST_CHILD (this), FIRST_CHILD (this)->fops->mknod, loc, mode, rdev, umask, dict); if (dict && need_unref) dict_unref (dict); return 0; } STACK_WIND (frame, stripe_single_mknod_cbk, FIRST_CHILD(this), FIRST_CHILD(this)->fops->mknod, loc, mode, rdev, umask, xdata); return 0; err: STRIPE_STACK_UNWIND (mknod, frame, -1, op_errno, NULL, NULL, NULL, NULL, NULL); return 0; } int32_t stripe_mkdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, inode_t *inode, struct iatt *buf, struct iatt *preparent, struct iatt *postparent, dict_t *xdata) { int32_t callcnt = 0; stripe_local_t *local = NULL; call_frame_t *prev = NULL; if (!this || !frame || !frame->local || !cookie) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } prev = cookie; local = frame->local; LOCK (&frame->lock); { callcnt = --local->call_count; if (op_ret == -1) { gf_log (this->name, GF_LOG_DEBUG, "%s returned error %s", prev->this->name, strerror (op_errno)); local->op_errno = op_errno; if ((op_errno != ENOENT) || (prev->this == FIRST_CHILD (this))) local->failed = 1; } if (op_ret >= 0) { local->op_ret = 0; local->stbuf_blocks += buf->ia_blocks; local->preparent_blocks += preparent->ia_blocks; local->postparent_blocks += postparent->ia_blocks; if (local->stbuf_size < buf->ia_size) local->stbuf_size = buf->ia_size; if (local->preparent_size < preparent->ia_size) local->preparent_size = preparent->ia_size; if (local->postparent_size < postparent->ia_size) local->postparent_size = postparent->ia_size; } } UNLOCK (&frame->lock); if (!callcnt) { if (local->failed != -1) { local->preparent.ia_blocks = local->preparent_blocks; local->preparent.ia_size = local->preparent_size; local->postparent.ia_blocks = local->postparent_blocks; local->postparent.ia_size = local->postparent_size; local->stbuf.ia_size = local->stbuf_size; local->stbuf.ia_blocks = local->stbuf_blocks; } STRIPE_STACK_UNWIND (mkdir, frame, local->op_ret, local->op_errno, local->inode, &local->stbuf, &local->preparent, &local->postparent, NULL); } out: return 0; } int32_t stripe_first_mkdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, inode_t *inode, struct iatt *buf, struct iatt *preparent, struct iatt *postparent, dict_t *xdata) { stripe_local_t *local = NULL; call_frame_t *prev = NULL; xlator_list_t *trav = NULL; if (!this || !frame || !frame->local || !cookie) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } prev = cookie; local = frame->local; trav = this->children; local->call_count--; /* first child is successful */ trav = trav->next; /* skip first child */ if (op_ret == -1) { gf_log (this->name, GF_LOG_DEBUG, "%s returned error %s", prev->this->name, strerror (op_errno)); local->op_errno = op_errno; goto out; } local->op_ret = 0; local->inode = inode_ref (inode); local->stbuf = *buf; local->postparent = *postparent; local->preparent = *preparent; local->stbuf_blocks += buf->ia_blocks; local->preparent_blocks += preparent->ia_blocks; local->postparent_blocks += postparent->ia_blocks; local->stbuf_size = buf->ia_size; local->preparent_size = preparent->ia_size; local->postparent_size = postparent->ia_size; while (trav) { STACK_WIND (frame, stripe_mkdir_cbk, trav->xlator, trav->xlator->fops->mkdir, &local->loc, local->mode, local->umask, local->xdata); trav = trav->next; } return 0; out: STRIPE_STACK_UNWIND (mkdir, frame, -1, op_errno, NULL, NULL, NULL, NULL, NULL); return 0; } int stripe_mkdir (call_frame_t *frame, xlator_t *this, loc_t *loc, mode_t mode, mode_t umask, dict_t *xdata) { stripe_private_t *priv = NULL; stripe_local_t *local = NULL; xlator_list_t *trav = NULL; int32_t op_errno = 1; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (loc, err); VALIDATE_OR_GOTO (loc->path, err); VALIDATE_OR_GOTO (loc->inode, err); priv = this->private; trav = this->children; if (priv->first_child_down) { op_errno = ENOTCONN; goto err; } /* Initialization */ local = mem_get0 (this->local_pool); if (!local) { op_errno = ENOMEM; goto err; } local->op_ret = -1; local->call_count = priv->child_count; if (xdata) local->xdata = dict_ref (xdata); local->mode = mode; local->umask = umask; loc_copy (&local->loc, loc); frame->local = local; /* Everytime in stripe lookup, all child nodes should be looked up */ STACK_WIND (frame, stripe_first_mkdir_cbk, trav->xlator, trav->xlator->fops->mkdir, loc, mode, umask, xdata); return 0; err: STRIPE_STACK_UNWIND (mkdir, frame, -1, op_errno, NULL, NULL, NULL, NULL, NULL); return 0; } int32_t stripe_link_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, inode_t *inode, struct iatt *buf, struct iatt *preparent, struct iatt *postparent, dict_t *xdata) { int32_t callcnt = 0; stripe_local_t *local = NULL; call_frame_t *prev = NULL; if (!this || !frame || !frame->local || !cookie) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } prev = cookie; local = frame->local; LOCK (&frame->lock); { callcnt = --local->call_count; if (op_ret == -1) { gf_log (this->name, GF_LOG_DEBUG, "%s returned error %s", prev->this->name, strerror (op_errno)); local->op_errno = op_errno; if ((op_errno != ENOENT) || (prev->this == FIRST_CHILD (this))) local->failed = 1; } if (op_ret >= 0) { local->op_ret = 0; if (FIRST_CHILD(this) == prev->this) { local->inode = inode_ref (inode); local->stbuf = *buf; local->postparent = *postparent; local->preparent = *preparent; } local->stbuf_blocks += buf->ia_blocks; local->preparent_blocks += preparent->ia_blocks; local->postparent_blocks += postparent->ia_blocks; if (local->stbuf_size < buf->ia_size) local->stbuf_size = buf->ia_size; if (local->preparent_size < preparent->ia_size) local->preparent_size = preparent->ia_size; if (local->postparent_size < postparent->ia_size) local->postparent_size = postparent->ia_size; } } UNLOCK (&frame->lock); if (!callcnt) { if (local->failed) local->op_ret = -1; if (local->op_ret != -1) { local->preparent.ia_blocks = local->preparent_blocks; local->preparent.ia_size = local->preparent_size; local->postparent.ia_blocks = local->postparent_blocks; local->postparent.ia_size = local->postparent_size; local->stbuf.ia_size = local->stbuf_size; local->stbuf.ia_blocks = local->stbuf_blocks; } STRIPE_STACK_UNWIND (link, frame, local->op_ret, local->op_errno, local->inode, &local->stbuf, &local->preparent, &local->postparent, NULL); } out: return 0; } int32_t stripe_link (call_frame_t *frame, xlator_t *this, loc_t *oldloc, loc_t *newloc, dict_t *xdata) { xlator_list_t *trav = NULL; stripe_local_t *local = NULL; stripe_private_t *priv = NULL; int32_t op_errno = 1; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (oldloc, err); VALIDATE_OR_GOTO (oldloc->path, err); VALIDATE_OR_GOTO (oldloc->inode, err); priv = this->private; trav = this->children; /* If any one node is down, don't allow link operation */ if (priv->nodes_down) { op_errno = ENOTCONN; goto err; } /* Initialization */ local = mem_get0 (this->local_pool); if (!local) { op_errno = ENOMEM; goto err; } local->op_ret = -1; frame->local = local; local->call_count = priv->child_count; /* Everytime in stripe lookup, all child nodes should be looked up */ while (trav) { STACK_WIND (frame, stripe_link_cbk, trav->xlator, trav->xlator->fops->link, oldloc, newloc, NULL); trav = trav->next; } return 0; err: STRIPE_STACK_UNWIND (link, frame, -1, op_errno, NULL, NULL, NULL, NULL, NULL); return 0; } int32_t stripe_create_fail_unlink_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, struct iatt *preparent, struct iatt *postparent, dict_t *xdata) { int32_t callcnt = 0; stripe_local_t *local = NULL; if (!this || !frame || !frame->local) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } local = frame->local; LOCK (&frame->lock); { callcnt = --local->call_count; } UNLOCK (&frame->lock); if (!callcnt) { STRIPE_STACK_UNWIND (create, frame, local->op_ret, local->op_errno, local->fd, local->inode, &local->stbuf, &local->preparent, &local->postparent, NULL); } out: return 0; } int32_t stripe_create_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, fd_t *fd, inode_t *inode, struct iatt *buf, struct iatt *preparent, struct iatt *postparent, dict_t *xdata) { int32_t callcnt = 0; stripe_local_t *local = NULL; stripe_private_t *priv = NULL; stripe_fd_ctx_t *fctx = NULL; call_frame_t *prev = NULL; xlator_list_t *trav = NULL; if (!this || !frame || !frame->local || !cookie) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } prev = cookie; priv = this->private; local = frame->local; LOCK (&frame->lock); { callcnt = --local->call_count; if (op_ret == -1) { gf_log (this->name, GF_LOG_DEBUG, "%s returned error %s", prev->this->name, strerror (op_errno)); local->failed = 1; local->op_errno = op_errno; } if (op_ret >= 0) { local->op_ret = op_ret; local->stbuf_blocks += buf->ia_blocks; local->preparent_blocks += preparent->ia_blocks; local->postparent_blocks += postparent->ia_blocks; if (local->stbuf_size < buf->ia_size) local->stbuf_size = buf->ia_size; if (local->preparent_size < preparent->ia_size) local->preparent_size = preparent->ia_size; if (local->postparent_size < postparent->ia_size) local->postparent_size = postparent->ia_size; } } UNLOCK (&frame->lock); if (!callcnt) { if (local->failed) local->op_ret = -1; if (local->op_ret == -1) { local->call_count = priv->child_count; trav = this->children; while (trav) { STACK_WIND (frame, stripe_create_fail_unlink_cbk, trav->xlator, trav->xlator->fops->unlink, &local->loc, 0, NULL); trav = trav->next; } return 0; } if (local->op_ret >= 0) { local->preparent.ia_blocks = local->preparent_blocks; local->preparent.ia_size = local->preparent_size; local->postparent.ia_blocks = local->postparent_blocks; local->postparent.ia_size = local->postparent_size; local->stbuf.ia_size = local->stbuf_size; local->stbuf.ia_blocks = local->stbuf_blocks; fctx = GF_CALLOC (1, sizeof (stripe_fd_ctx_t), gf_stripe_mt_stripe_fd_ctx_t); if (!fctx) { local->op_ret = -1; local->op_errno = ENOMEM; goto unwind; } fctx->stripe_size = local->stripe_size; fctx->stripe_count = priv->child_count; fctx->static_array = 1; fctx->xl_array = priv->xl_array; inode_ctx_put (local->inode, this, (uint64_t)(long)fctx); } unwind: /* Create itself has failed.. so return without setxattring */ STRIPE_STACK_UNWIND (create, frame, local->op_ret, local->op_errno, local->fd, local->inode, &local->stbuf, &local->preparent, &local->postparent, NULL); } out: return 0; } int32_t stripe_first_create_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, fd_t *fd, inode_t *inode, struct iatt *buf, struct iatt *preparent, struct iatt *postparent, dict_t *xdata) { stripe_local_t *local = NULL; stripe_private_t *priv = NULL; call_frame_t *prev = NULL; xlator_list_t *trav = NULL; int i = 1; dict_t *dict = NULL; loc_t *loc = NULL; int32_t need_unref = 0; int32_t ret = -1; if (!this || !frame || !frame->local || !cookie) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } prev = cookie; priv = this->private; local = frame->local; trav = this->children; loc = &local->loc; --local->call_count; if (op_ret == -1) { gf_log (this->name, GF_LOG_DEBUG, "%s returned error %s", prev->this->name, strerror (op_errno)); local->failed = 1; local->op_errno = op_errno; } local->op_ret = 0; /* Get the mapping in inode private */ /* Get the stat buf right */ local->stbuf = *buf; local->preparent = *preparent; local->postparent = *postparent; local->stbuf_blocks += buf->ia_blocks; local->preparent_blocks += preparent->ia_blocks; local->postparent_blocks += postparent->ia_blocks; if (local->stbuf_size < buf->ia_size) local->stbuf_size = buf->ia_size; if (local->preparent_size < preparent->ia_size) local->preparent_size = preparent->ia_size; if (local->postparent_size < postparent->ia_size) local->postparent_size = postparent->ia_size; if (local->failed) local->op_ret = -1; if (local->op_ret == -1) { local->call_count = 1; STACK_WIND (frame, stripe_create_fail_unlink_cbk, FIRST_CHILD (this), FIRST_CHILD (this)->fops->unlink, &local->loc, 0, NULL); return 0; } if (local->op_ret >= 0) { local->preparent.ia_blocks = local->preparent_blocks; local->preparent.ia_size = local->preparent_size; local->postparent.ia_blocks = local->postparent_blocks; local->postparent.ia_size = local->postparent_size; local->stbuf.ia_size = local->stbuf_size; local->stbuf.ia_blocks = local->stbuf_blocks; } /* Send a setxattr request to nodes where the files are created */ trav = trav->next; while (trav) { if (priv->xattr_supported) { dict = dict_new (); if (!dict) { gf_log (this->name, GF_LOG_ERROR, "failed to allocate dict %s", loc->path); } need_unref = 1; dict_copy (local->xattr, dict); ret = stripe_xattr_request_build (this, dict, local->stripe_size, priv->child_count, i); if (ret) gf_log (this->name, GF_LOG_ERROR, "failed to build xattr request"); } else { dict = local->xattr; } STACK_WIND (frame, stripe_create_cbk, trav->xlator, trav->xlator->fops->create, &local->loc, local->flags, local->mode, local->umask, local->fd, dict); trav = trav->next; if (need_unref && dict) dict_unref (dict); i++; } out: return 0; } /** * stripe_create - If a block-size is specified for the 'name', create the * file in all the child nodes. If not, create it in only first child. * * @name- complete path of the file to be created. */ int32_t stripe_create (call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t flags, mode_t mode, mode_t umask, fd_t *fd, dict_t *xdata) { stripe_private_t *priv = NULL; stripe_local_t *local = NULL; int32_t op_errno = EINVAL; int ret = 0; int need_unref = 0; int i = 0; dict_t *dict = NULL; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (loc, err); VALIDATE_OR_GOTO (loc->path, err); VALIDATE_OR_GOTO (loc->inode, err); priv = this->private; /* files created in O_APPEND mode does not allow lseek() on fd */ flags &= ~O_APPEND; if (priv->first_child_down || priv->nodes_down) { gf_log (this->name, GF_LOG_DEBUG, "First node down, returning EIO"); op_errno = EIO; goto err; } /* Initialization */ local = mem_get0 (this->local_pool); if (!local) { op_errno = ENOMEM; goto err; } local->op_ret = -1; local->op_errno = ENOTCONN; local->stripe_size = stripe_get_matching_bs (loc->path, priv); frame->local = local; local->inode = inode_ref (loc->inode); loc_copy (&local->loc, loc); local->fd = fd_ref (fd); local->flags = flags; local->mode = mode; local->umask = umask; if (xdata) local->xattr = dict_ref (xdata); local->call_count = priv->child_count; /* Send a setxattr request to nodes where the files are created */ if (priv->xattr_supported) { dict = dict_new (); if (!dict) { gf_log (this->name, GF_LOG_ERROR, "failed to allocate dict %s", loc->path); } need_unref = 1; dict_copy (xdata, dict); ret = stripe_xattr_request_build (this, dict, local->stripe_size, priv->child_count, i); if (ret) gf_log (this->name, GF_LOG_ERROR, "failed to build xattr request"); } else { dict = xdata; } STACK_WIND (frame, stripe_first_create_cbk, FIRST_CHILD (this), FIRST_CHILD (this)->fops->create, loc, flags, mode, umask, fd, dict); if (need_unref && dict) dict_unref (dict); return 0; err: STRIPE_STACK_UNWIND (create, frame, -1, op_errno, NULL, NULL, NULL, NULL, NULL, xdata); return 0; } int32_t stripe_open_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, fd_t *fd, dict_t *xdata) { int32_t callcnt = 0; stripe_local_t *local = NULL; call_frame_t *prev = NULL; if (!this || !frame || !frame->local || !cookie) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } prev = cookie; local = frame->local; LOCK (&frame->lock); { callcnt = --local->call_count; if (op_ret == -1) { gf_log (this->name, GF_LOG_DEBUG, "%s returned error %s", prev->this->name, strerror (op_errno)); if ((op_errno != ENOENT) || (prev->this == FIRST_CHILD (this))) local->failed = 1; local->op_errno = op_errno; } if (op_ret >= 0) local->op_ret = op_ret; } UNLOCK (&frame->lock); if (!callcnt) { if (local->failed) local->op_ret = -1; STRIPE_STACK_UNWIND (open, frame, local->op_ret, local->op_errno, local->fd, xdata); } out: return 0; } /** * stripe_open - */ int32_t stripe_open (call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t flags, fd_t *fd, dict_t *xdata) { stripe_local_t *local = NULL; stripe_private_t *priv = NULL; xlator_list_t *trav = NULL; int32_t op_errno = 1; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (loc, err); VALIDATE_OR_GOTO (loc->path, err); VALIDATE_OR_GOTO (loc->inode, err); priv = this->private; trav = this->children; if (priv->first_child_down) { op_errno = ENOTCONN; goto err; } /* Initialization */ local = mem_get0 (this->local_pool); if (!local) { op_errno = ENOMEM; goto err; } /* files opened in O_APPEND mode does not allow lseek() on fd */ flags &= ~O_APPEND; local->fd = fd_ref (fd); frame->local = local; loc_copy (&local->loc, loc); /* Striped files */ local->flags = flags; local->call_count = priv->child_count; local->stripe_size = stripe_get_matching_bs (loc->path, priv); while (trav) { STACK_WIND (frame, stripe_open_cbk, trav->xlator, trav->xlator->fops->open, &local->loc, local->flags, local->fd, xdata); trav = trav->next; } return 0; err: STRIPE_STACK_UNWIND (open, frame, -1, op_errno, NULL, NULL); return 0; } int32_t stripe_opendir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, fd_t *fd, dict_t *xdata) { int32_t callcnt = 0; stripe_local_t *local = NULL; call_frame_t *prev = NULL; if (!this || !frame || !frame->local || !cookie) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } prev = cookie; local = frame->local; LOCK (&frame->lock); { callcnt = --local->call_count; if (op_ret == -1) { gf_log (this->name, GF_LOG_DEBUG, "%s returned error %s", prev->this->name, strerror (op_errno)); local->op_ret = -1; local->op_errno = op_errno; } if (op_ret >= 0) local->op_ret = op_ret; } UNLOCK (&frame->lock); if (!callcnt) { STRIPE_STACK_UNWIND (opendir, frame, local->op_ret, local->op_errno, local->fd, NULL); } out: return 0; } int32_t stripe_opendir (call_frame_t *frame, xlator_t *this, loc_t *loc, fd_t *fd, dict_t *xdata) { xlator_list_t *trav = NULL; stripe_local_t *local = NULL; stripe_private_t *priv = NULL; int32_t op_errno = EINVAL; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (loc, err); VALIDATE_OR_GOTO (loc->path, err); VALIDATE_OR_GOTO (loc->inode, err); priv = this->private; trav = this->children; if (priv->first_child_down) { op_errno = ENOTCONN; goto err; } /* Initialization */ local = mem_get0 (this->local_pool); if (!local) { op_errno = ENOMEM; goto err; } frame->local = local; local->call_count = priv->child_count; local->fd = fd_ref (fd); while (trav) { STACK_WIND (frame, stripe_opendir_cbk, trav->xlator, trav->xlator->fops->opendir, loc, fd, NULL); trav = trav->next; } return 0; err: STRIPE_STACK_UNWIND (opendir, frame, -1, op_errno, NULL, NULL); return 0; } int32_t stripe_lk_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, struct gf_flock *lock, dict_t *xdata) { int32_t callcnt = 0; stripe_local_t *local = NULL; call_frame_t *prev = NULL; if (!this || !frame || !frame->local || !cookie) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } prev = cookie; local = frame->local; LOCK (&frame->lock); { callcnt = --local->call_count; if (op_ret == -1) { gf_log (this->name, GF_LOG_DEBUG, "%s returned error %s", prev->this->name, strerror (op_errno)); local->op_errno = op_errno; if ((op_errno != ENOENT) || (prev->this == FIRST_CHILD (this))) local->failed = 1; } if (op_ret >= 0) { if (FIRST_CHILD(this) == prev->this) { /* First successful call, copy the *lock */ local->op_ret = op_ret; local->lock = *lock; } } } UNLOCK (&frame->lock); if (!callcnt) { if (local->failed) local->op_ret = -1; STRIPE_STACK_UNWIND (lk, frame, local->op_ret, local->op_errno, &local->lock, NULL); } out: return 0; } int32_t stripe_lk (call_frame_t *frame, xlator_t *this, fd_t *fd, int32_t cmd, struct gf_flock *lock, dict_t *xdata) { stripe_local_t *local = NULL; xlator_list_t *trav = NULL; stripe_private_t *priv = NULL; int32_t op_errno = EINVAL; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (fd, err); VALIDATE_OR_GOTO (fd->inode, err); trav = this->children; priv = this->private; /* Initialization */ local = mem_get0 (this->local_pool); if (!local) { op_errno = ENOMEM; goto err; } local->op_ret = -1; frame->local = local; local->call_count = priv->child_count; while (trav) { STACK_WIND (frame, stripe_lk_cbk, trav->xlator, trav->xlator->fops->lk, fd, cmd, lock, NULL); trav = trav->next; } return 0; err: STRIPE_STACK_UNWIND (lk, frame, -1, op_errno, NULL, NULL); return 0; } int32_t stripe_flush_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, dict_t *xdata) { int32_t callcnt = 0; stripe_local_t *local = NULL; call_frame_t *prev = NULL; if (!this || !frame || !frame->local || !cookie) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } prev = cookie; local = frame->local; LOCK (&frame->lock); { callcnt = --local->call_count; if (op_ret == -1) { gf_log (this->name, GF_LOG_DEBUG, "%s returned %s", prev->this->name, strerror (op_errno)); local->op_errno = op_errno; if ((op_errno != ENOENT) || (prev->this == FIRST_CHILD (this))) local->failed = 1; } if (op_ret >= 0) local->op_ret = op_ret; } UNLOCK (&frame->lock); if (!callcnt) { if (local->failed) local->op_ret = -1; STRIPE_STACK_UNWIND (flush, frame, local->op_ret, local->op_errno, NULL); } out: return 0; } int32_t stripe_flush (call_frame_t *frame, xlator_t *this, fd_t *fd, dict_t *xdata) { stripe_local_t *local = NULL; stripe_private_t *priv = NULL; xlator_list_t *trav = NULL; int32_t op_errno = 1; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (fd, err); VALIDATE_OR_GOTO (fd->inode, err); priv = this->private; trav = this->children; if (priv->first_child_down) { op_errno = ENOTCONN; goto err; } /* Initialization */ local = mem_get0 (this->local_pool); if (!local) { op_errno = ENOMEM; goto err; } local->op_ret = -1; frame->local = local; local->call_count = priv->child_count; while (trav) { STACK_WIND (frame, stripe_flush_cbk, trav->xlator, trav->xlator->fops->flush, fd, NULL); trav = trav->next; } return 0; err: STRIPE_STACK_UNWIND (flush, frame, -1, op_errno, NULL); return 0; } int32_t stripe_fsync_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, struct iatt *prebuf, struct iatt *postbuf, dict_t *xdata) { int32_t callcnt = 0; stripe_local_t *local = NULL; call_frame_t *prev = NULL; if (!this || !frame || !frame->local || !cookie) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } prev = cookie; local = frame->local; LOCK (&frame->lock); { callcnt = --local->call_count; if (op_ret == -1) { gf_log (this->name, GF_LOG_DEBUG, "%s returned %s", prev->this->name, strerror (op_errno)); local->op_errno = op_errno; if ((op_errno != ENOENT) || (prev->this == FIRST_CHILD (this))) local->failed = 1; } if (op_ret >= 0) { local->op_ret = op_ret; if (FIRST_CHILD(this) == prev->this) { local->pre_buf = *prebuf; local->post_buf = *postbuf; } local->prebuf_blocks += prebuf->ia_blocks; local->postbuf_blocks += postbuf->ia_blocks; if (local->prebuf_size < prebuf->ia_size) local->prebuf_size = prebuf->ia_size; if (local->postbuf_size < postbuf->ia_size) local->postbuf_size = postbuf->ia_size; } } UNLOCK (&frame->lock); if (!callcnt) { if (local->failed) local->op_ret = -1; if (local->op_ret != -1) { local->pre_buf.ia_blocks = local->prebuf_blocks; local->pre_buf.ia_size = local->prebuf_size; local->post_buf.ia_blocks = local->postbuf_blocks; local->post_buf.ia_size = local->postbuf_size; } STRIPE_STACK_UNWIND (fsync, frame, local->op_ret, local->op_errno, &local->pre_buf, &local->post_buf, NULL); } out: return 0; } int32_t stripe_fsync (call_frame_t *frame, xlator_t *this, fd_t *fd, int32_t flags, dict_t *xdata) { stripe_local_t *local = NULL; stripe_private_t *priv = NULL; xlator_list_t *trav = NULL; int32_t op_errno = 1; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (fd, err); VALIDATE_OR_GOTO (fd->inode, err); priv = this->private; trav = this->children; /* Initialization */ local = mem_get0 (this->local_pool); if (!local) { op_errno = ENOMEM; goto err; } local->op_ret = -1; frame->local = local; local->call_count = priv->child_count; while (trav) { STACK_WIND (frame, stripe_fsync_cbk, trav->xlator, trav->xlator->fops->fsync, fd, flags, NULL); trav = trav->next; } return 0; err: STRIPE_STACK_UNWIND (fsync, frame, -1, op_errno, NULL, NULL, NULL); return 0; } int32_t stripe_fstat_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, struct iatt *buf, dict_t *xdata) { int32_t callcnt = 0; stripe_local_t *local = NULL; call_frame_t *prev = NULL; if (!this || !frame || !frame->local || !cookie) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } prev = cookie; local = frame->local; LOCK (&frame->lock); { callcnt = --local->call_count; if (op_ret == -1) { gf_log (this->name, GF_LOG_DEBUG, "%s returned error %s", prev->this->name, strerror (op_errno)); local->op_errno = op_errno; if ((op_errno != ENOENT) || (prev->this == FIRST_CHILD (this))) local->failed = 1; } if (op_ret == 0) { local->op_ret = 0; if (FIRST_CHILD(this) == prev->this) local->stbuf = *buf; local->stbuf_blocks += buf->ia_blocks; if (local->stbuf_size < buf->ia_size) local->stbuf_size = buf->ia_size; } } UNLOCK (&frame->lock); if (!callcnt) { if (local->failed) local->op_ret = -1; if (local->op_ret != -1) { local->stbuf.ia_size = local->stbuf_size; local->stbuf.ia_blocks = local->stbuf_blocks; } STRIPE_STACK_UNWIND (fstat, frame, local->op_ret, local->op_errno, &local->stbuf, NULL); } out: return 0; } int32_t stripe_fstat (call_frame_t *frame, xlator_t *this, fd_t *fd, dict_t *xdata) { stripe_local_t *local = NULL; stripe_private_t *priv = NULL; xlator_list_t *trav = NULL; int32_t op_errno = 1; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (fd, err); VALIDATE_OR_GOTO (fd->inode, err); priv = this->private; trav = this->children; /* Initialization */ local = mem_get0 (this->local_pool); if (!local) { op_errno = ENOMEM; goto err; } local->op_ret = -1; frame->local = local; local->call_count = priv->child_count; while (trav) { STACK_WIND (frame, stripe_fstat_cbk, trav->xlator, trav->xlator->fops->fstat, fd, NULL); trav = trav->next; } return 0; err: STRIPE_STACK_UNWIND (fstat, frame, -1, op_errno, NULL, NULL); return 0; } int32_t stripe_ftruncate (call_frame_t *frame, xlator_t *this, fd_t *fd, off_t offset, dict_t *xdata) { stripe_local_t *local = NULL; stripe_private_t *priv = NULL; xlator_list_t *trav = NULL; int32_t op_errno = 1; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (fd, err); VALIDATE_OR_GOTO (fd->inode, err); priv = this->private; trav = this->children; /* Initialization */ local = mem_get0 (this->local_pool); if (!local) { op_errno = ENOMEM; goto err; } local->op_ret = -1; frame->local = local; local->call_count = priv->child_count; while (trav) { STACK_WIND (frame, stripe_truncate_cbk, trav->xlator, trav->xlator->fops->ftruncate, fd, offset, NULL); trav = trav->next; } return 0; err: STRIPE_STACK_UNWIND (ftruncate, frame, -1, op_errno, NULL, NULL, NULL); return 0; } int32_t stripe_fsyncdir_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, dict_t *xdata) { int32_t callcnt = 0; stripe_local_t *local = NULL; call_frame_t *prev = NULL; if (!this || !frame || !frame->local || !cookie) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } prev = cookie; local = frame->local; LOCK (&frame->lock); { callcnt = --local->call_count; if (op_ret == -1) { gf_log (this->name, GF_LOG_DEBUG, "%s returned %s", prev->this->name, strerror (op_errno)); local->op_errno = op_errno; if ((op_errno != ENOENT) || (prev->this == FIRST_CHILD (this))) local->failed = 1; } if (op_ret >= 0) local->op_ret = op_ret; } UNLOCK (&frame->lock); if (!callcnt) { if (local->failed) local->op_ret = -1; STRIPE_STACK_UNWIND (fsyncdir, frame, local->op_ret, local->op_errno, NULL); } out: return 0; } int32_t stripe_fsyncdir (call_frame_t *frame, xlator_t *this, fd_t *fd, int32_t flags, dict_t *xdata) { stripe_local_t *local = NULL; stripe_private_t *priv = NULL; xlator_list_t *trav = NULL; int32_t op_errno = 1; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (fd, err); VALIDATE_OR_GOTO (fd->inode, err); priv = this->private; trav = this->children; /* Initialization */ local = mem_get0 (this->local_pool); if (!local) { op_errno = ENOMEM; goto err; } local->op_ret = -1; frame->local = local; local->call_count = priv->child_count; while (trav) { STACK_WIND (frame, stripe_fsyncdir_cbk, trav->xlator, trav->xlator->fops->fsyncdir, fd, flags, NULL); trav = trav->next; } return 0; err: STRIPE_STACK_UNWIND (fsyncdir, frame, -1, op_errno, NULL); return 0; } int32_t stripe_readv_fstat_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, struct iatt *buf, dict_t *xdata) { int32_t i = 0; int32_t callcnt = 0; int32_t count = 0; stripe_local_t *local = NULL; struct iovec *vec = NULL; struct iatt tmp_stbuf = {0,}; struct iobref *tmp_iobref = NULL; struct iobuf *iobuf = NULL; if (!this || !frame || !frame->local) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } local = frame->local; LOCK (&frame->lock); { callcnt = --local->call_count; if (op_ret != -1) if (local->stbuf_size < buf->ia_size) local->stbuf_size = buf->ia_size; } UNLOCK (&frame->lock); if (!callcnt) { op_ret = 0; /* Keep extra space for filling in '\0's */ vec = GF_CALLOC ((local->count * 2), sizeof (struct iovec), gf_stripe_mt_iovec); if (!vec) { op_ret = -1; goto done; } for (i = 0; i < local->wind_count; i++) { if (local->replies[i].op_ret) { memcpy ((vec + count), local->replies[i].vector, (local->replies[i].count * sizeof (struct iovec))); count += local->replies[i].count; op_ret += local->replies[i].op_ret; } if ((local->replies[i].op_ret < local->replies[i].requested_size) && (local->stbuf_size > (local->offset + op_ret))) { /* Fill in 0s here */ vec[count].iov_len = (local->replies[i].requested_size - local->replies[i].op_ret); iobuf = iobuf_get2 (this->ctx->iobuf_pool, vec[count].iov_len); if (!iobuf) { gf_log (this->name, GF_LOG_ERROR, "Out of memory."); op_ret = -1; op_errno = ENOMEM; goto done; } memset (iobuf->ptr, 0, vec[count].iov_len); iobref_add (local->iobref, iobuf); vec[count].iov_base = iobuf->ptr; op_ret += vec[count].iov_len; count++; } GF_FREE (local->replies[i].vector); } /* FIXME: notice that st_ino, and st_dev (gen) will be * different than what inode will have. Make sure this doesn't * cause any bugs at higher levels */ memcpy (&tmp_stbuf, &local->replies[0].stbuf, sizeof (struct iatt)); tmp_stbuf.ia_size = local->stbuf_size; done: GF_FREE (local->replies); tmp_iobref = local->iobref; STRIPE_STACK_UNWIND (readv, frame, op_ret, op_errno, vec, count, &tmp_stbuf, tmp_iobref, NULL); iobref_unref (tmp_iobref); if (vec) GF_FREE (vec); } out: return 0; } /** * stripe_readv_cbk - get all the striped reads, and order it properly, send it * to above layer after putting it in a single vector. */ int32_t stripe_readv_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, struct iovec *vector, int32_t count, struct iatt *stbuf, struct iobref *iobref, dict_t *xdata) { int32_t index = 0; int32_t callcnt = 0; int32_t final_count = 0; int32_t need_to_check_proper_size = 0; call_frame_t *mframe = NULL; stripe_local_t *mlocal = NULL; stripe_local_t *local = NULL; struct iovec *final_vec = NULL; struct iatt tmp_stbuf = {0,}; struct iatt *tmp_stbuf_p = NULL; //need it for a warning struct iobref *tmp_iobref = NULL; stripe_fd_ctx_t *fctx = NULL; if (!this || !frame || !frame->local || !cookie) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto end; } local = frame->local; index = local->node_index; mframe = local->orig_frame; if (!mframe) goto out; mlocal = mframe->local; if (!mlocal) goto out; fctx = mlocal->fctx; LOCK (&mframe->lock); { mlocal->replies[index].op_ret = op_ret; mlocal->replies[index].op_errno = op_errno; mlocal->replies[index].requested_size = local->readv_size; if (op_ret >= 0) { mlocal->replies[index].stbuf = *stbuf; mlocal->replies[index].count = count; mlocal->replies[index].vector = iov_dup (vector, count); if (local->stbuf_size < stbuf->ia_size) local->stbuf_size = stbuf->ia_size; local->stbuf_blocks += stbuf->ia_blocks; if (!mlocal->iobref) mlocal->iobref = iobref_new (); iobref_merge (mlocal->iobref, iobref); } callcnt = ++mlocal->call_count; } UNLOCK(&mframe->lock); if (callcnt == mlocal->wind_count) { op_ret = 0; for (index=0; index < mlocal->wind_count; index++) { /* check whether each stripe returned * 'expected' number of bytes */ if (mlocal->replies[index].op_ret == -1) { op_ret = -1; op_errno = mlocal->replies[index].op_errno; break; } /* TODO: handle the 'holes' within the read range properly */ if (mlocal->replies[index].op_ret < mlocal->replies[index].requested_size) { need_to_check_proper_size = 1; } op_ret += mlocal->replies[index].op_ret; mlocal->count += mlocal->replies[index].count; } if (op_ret == -1) goto done; if (need_to_check_proper_size) goto check_size; final_vec = GF_CALLOC (mlocal->count, sizeof (struct iovec), gf_stripe_mt_iovec); if (!final_vec) { op_ret = -1; goto done; } for (index = 0; index < mlocal->wind_count; index++) { memcpy ((final_vec + final_count), mlocal->replies[index].vector, (mlocal->replies[index].count * sizeof (struct iovec))); final_count += mlocal->replies[index].count; GF_FREE (mlocal->replies[index].vector); } /* FIXME: notice that st_ino, and st_dev (gen) will be * different than what inode will have. Make sure this doesn't * cause any bugs at higher levels */ memcpy (&tmp_stbuf, &mlocal->replies[0].stbuf, sizeof (struct iatt)); tmp_stbuf.ia_size = local->stbuf_size; tmp_stbuf.ia_blocks = local->stbuf_blocks; done: /* */ GF_FREE (mlocal->replies); tmp_iobref = mlocal->iobref; /* work around for nfs truncated read. Bug 3774 */ tmp_stbuf_p = &tmp_stbuf; WIPE (tmp_stbuf_p); STRIPE_STACK_UNWIND (readv, mframe, op_ret, op_errno, final_vec, final_count, &tmp_stbuf, tmp_iobref, NULL); iobref_unref (tmp_iobref); if (final_vec) GF_FREE (final_vec); } goto out; check_size: mlocal->call_count = fctx->stripe_count; for (index = 0; index < fctx->stripe_count; index++) { STACK_WIND (mframe, stripe_readv_fstat_cbk, (fctx->xl_array[index]), (fctx->xl_array[index])->fops->fstat, mlocal->fd, NULL); } out: STRIPE_STACK_DESTROY (frame); end: return 0; } int32_t stripe_readv (call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size, off_t offset, uint32_t flags, dict_t *xdata) { int32_t op_errno = EINVAL; int32_t idx = 0; int32_t index = 0; int32_t num_stripe = 0; int32_t off_index = 0; size_t frame_size = 0; off_t rounded_end = 0; uint64_t tmp_fctx = 0; uint64_t stripe_size = 0; off_t rounded_start = 0; off_t frame_offset = offset; stripe_local_t *local = NULL; call_frame_t *rframe = NULL; stripe_local_t *rlocal = NULL; stripe_fd_ctx_t *fctx = NULL; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (fd, err); VALIDATE_OR_GOTO (fd->inode, err); inode_ctx_get (fd->inode, this, &tmp_fctx); if (!tmp_fctx) { op_errno = EBADFD; goto err; } fctx = (stripe_fd_ctx_t *)(long)tmp_fctx; stripe_size = fctx->stripe_size; STRIPE_VALIDATE_FCTX (fctx, err); if (!stripe_size) { gf_log (this->name, GF_LOG_DEBUG, "Wrong stripe size for the file"); goto err; } /* The file is stripe across the child nodes. Send the read request * to the child nodes appropriately after checking which region of * the file is in which child node. Always '0-' part of * the file resides in the first child. */ rounded_start = floor (offset, stripe_size); rounded_end = roof (offset+size, stripe_size); num_stripe = (rounded_end- rounded_start)/stripe_size; local = mem_get0 (this->local_pool); if (!local) { op_errno = ENOMEM; goto err; } frame->local = local; /* This is where all the vectors should be copied. */ local->replies = GF_CALLOC (num_stripe, sizeof (struct readv_replies), gf_stripe_mt_readv_replies); if (!local->replies) { op_errno = ENOMEM; goto err; } off_index = (offset / stripe_size) % fctx->stripe_count; local->wind_count = num_stripe; local->readv_size = size; local->offset = offset; local->fd = fd_ref (fd); local->fctx = fctx; for (index = off_index; index < (num_stripe + off_index); index++) { rframe = copy_frame (frame); rlocal = mem_get0 (this->local_pool); if (!rlocal) { op_errno = ENOMEM; goto err; } frame_size = min (roof (frame_offset+1, stripe_size), (offset + size)) - frame_offset; rlocal->node_index = index - off_index; rlocal->orig_frame = frame; rlocal->readv_size = frame_size; rframe->local = rlocal; idx = (index % fctx->stripe_count); STACK_WIND (rframe, stripe_readv_cbk, fctx->xl_array[idx], fctx->xl_array[idx]->fops->readv, fd, frame_size, frame_offset, flags, xdata); frame_offset += frame_size; } return 0; err: if (rframe) STRIPE_STACK_DESTROY (rframe); STRIPE_STACK_UNWIND (readv, frame, -1, op_errno, NULL, 0, NULL, NULL, NULL); return 0; } int32_t stripe_writev_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, struct iatt *prebuf, struct iatt *postbuf, dict_t *xdata) { int32_t callcnt = 0; stripe_local_t *local = NULL; call_frame_t *prev = NULL; if (!this || !frame || !frame->local || !cookie) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } prev = cookie; local = frame->local; LOCK(&frame->lock); { callcnt = ++local->call_count; if (op_ret == -1) { gf_log (this->name, GF_LOG_DEBUG, "%s returned error %s", prev->this->name, strerror (op_errno)); local->op_errno = op_errno; local->op_ret = -1; } if (op_ret >= 0) { local->op_ret += op_ret; local->post_buf = *postbuf; local->pre_buf = *prebuf; } } UNLOCK (&frame->lock); if ((callcnt == local->wind_count) && local->unwind) { STRIPE_STACK_UNWIND (writev, frame, local->op_ret, local->op_errno, &local->pre_buf, &local->post_buf, NULL); } out: return 0; } int32_t stripe_writev (call_frame_t *frame, xlator_t *this, fd_t *fd, struct iovec *vector, int32_t count, off_t offset, uint32_t flags, struct iobref *iobref, dict_t *xdata) { struct iovec *tmp_vec = NULL; stripe_local_t *local = NULL; stripe_fd_ctx_t *fctx = NULL; int32_t op_errno = 1; int32_t idx = 0; int32_t total_size = 0; int32_t offset_offset = 0; int32_t remaining_size = 0; int32_t tmp_count = count; off_t fill_size = 0; uint64_t stripe_size = 0; uint64_t tmp_fctx = 0; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (fd, err); VALIDATE_OR_GOTO (fd->inode, err); inode_ctx_get (fd->inode, this, &tmp_fctx); if (!tmp_fctx) { op_errno = EINVAL; goto err; } fctx = (stripe_fd_ctx_t *)(long)tmp_fctx; stripe_size = fctx->stripe_size; STRIPE_VALIDATE_FCTX (fctx, err); /* File has to be stripped across the child nodes */ for (idx = 0; idx< count; idx ++) { total_size += vector[idx].iov_len; } remaining_size = total_size; local = mem_get0 (this->local_pool); if (!local) { op_errno = ENOMEM; goto err; } frame->local = local; local->stripe_size = stripe_size; if (!stripe_size) { gf_log (this->name, GF_LOG_DEBUG, "Wrong stripe size for the file"); op_errno = EINVAL; goto err; } while (1) { /* Send striped chunk of the vector to child nodes appropriately. */ idx = (((offset + offset_offset) / local->stripe_size) % fctx->stripe_count); fill_size = (local->stripe_size - ((offset + offset_offset) % local->stripe_size)); if (fill_size > remaining_size) fill_size = remaining_size; remaining_size -= fill_size; tmp_count = iov_subset (vector, count, offset_offset, offset_offset + fill_size, NULL); tmp_vec = GF_CALLOC (tmp_count, sizeof (struct iovec), gf_stripe_mt_iovec); if (!tmp_vec) { op_errno = ENOMEM; goto err; } tmp_count = iov_subset (vector, count, offset_offset, offset_offset + fill_size, tmp_vec); local->wind_count++; if (remaining_size == 0) local->unwind = 1; STACK_WIND (frame, stripe_writev_cbk, fctx->xl_array[idx], fctx->xl_array[idx]->fops->writev, fd, tmp_vec, tmp_count, offset + offset_offset, flags, iobref, xdata); GF_FREE (tmp_vec); offset_offset += fill_size; if (remaining_size == 0) break; } return 0; err: STRIPE_STACK_UNWIND (writev, frame, -1, op_errno, NULL, NULL, NULL); return 0; } int32_t stripe_release (xlator_t *this, fd_t *fd) { return 0; } int stripe_forget (xlator_t *this, inode_t *inode) { uint64_t tmp_fctx = 0; stripe_fd_ctx_t *fctx = NULL; VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (inode, err); (void) inode_ctx_del (inode, this, &tmp_fctx); if (!tmp_fctx) { goto err; } fctx = (stripe_fd_ctx_t *)(long)tmp_fctx; if (!fctx->static_array) GF_FREE (fctx->xl_array); GF_FREE (fctx); err: return 0; } int32_t notify (xlator_t *this, int32_t event, void *data, ...) { stripe_private_t *priv = NULL; int down_client = 0; int i = 0; if (!this) return 0; priv = this->private; if (!priv) return 0; switch (event) { case GF_EVENT_CHILD_UP: case GF_EVENT_CHILD_CONNECTING: { /* get an index number to set */ for (i = 0; i < priv->child_count; i++) { if (data == priv->xl_array[i]) break; } priv->state[i] = 1; for (i = 0; i < priv->child_count; i++) { if (!priv->state[i]) down_client++; } LOCK (&priv->lock); { priv->nodes_down = down_client; if (data == FIRST_CHILD (this)) priv->first_child_down = 0; if (!priv->nodes_down) default_notify (this, event, data); } UNLOCK (&priv->lock); } break; case GF_EVENT_CHILD_DOWN: { /* get an index number to set */ for (i = 0; i < priv->child_count; i++) { if (data == priv->xl_array[i]) break; } priv->state[i] = 0; for (i = 0; i < priv->child_count; i++) { if (!priv->state[i]) down_client++; } LOCK (&priv->lock); { priv->nodes_down = down_client; if (data == FIRST_CHILD (this)) priv->first_child_down = 1; if (priv->nodes_down) default_notify (this, event, data); } UNLOCK (&priv->lock); } break; default: { /* */ default_notify (this, event, data); } break; } return 0; } int stripe_setxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int op_ret, int op_errno, dict_t *xdata) { int ret = -1; int call_cnt = 0; stripe_local_t *local = NULL; if (!frame || !frame->local || !this) { gf_log ("", GF_LOG_ERROR, "Possible NULL deref"); return ret; } local = frame->local; LOCK (&frame->lock); { call_cnt = --local->wind_count; /** * We overwrite ->op_* values here for subsequent faliure * conditions, hence we propogate the last errno down the * stack. */ if (op_ret < 0) { local->op_ret = op_ret; local->op_errno = op_errno; goto unlock; } } unlock: UNLOCK (&frame->lock); if (!call_cnt) { STRIPE_STACK_UNWIND (setxattr, frame, local->op_ret, local->op_errno, xdata); } return 0; } int stripe_setxattr (call_frame_t *frame, xlator_t *this, loc_t *loc, dict_t *dict, int flags, dict_t *xdata) { data_pair_t *pair = NULL; int32_t op_errno = EINVAL; xlator_list_t *trav = NULL; stripe_private_t *priv = NULL; stripe_local_t *local = NULL; int i = 0; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (loc, err); VALIDATE_OR_GOTO (loc->inode, err); GF_IF_INTERNAL_XATTR_GOTO ("trusted.*stripe*", dict, pair, op_errno, err); priv = this->private; trav = this->children; local = mem_get0 (this->local_pool); if (!local) { op_errno = ENOMEM; goto err; } frame->local = local; local->wind_count = priv->child_count; local->op_ret = local->op_errno = 0; /** * Set xattrs for directories on all subvolumes. Additionally * this power is only given to a special client. */ if ((frame->root->pid == -1) && IA_ISDIR (loc->inode->ia_type)) { for (i = 0; i < priv->child_count; i++, trav = trav->next) { STACK_WIND (frame, stripe_setxattr_cbk, trav->xlator, trav->xlator->fops->setxattr, loc, dict, flags, xdata); } } else { local->wind_count = 1; STACK_WIND (frame, stripe_setxattr_cbk, FIRST_CHILD(this), FIRST_CHILD(this)->fops->setxattr, loc, dict, flags, xdata); } return 0; err: STRIPE_STACK_UNWIND (setxattr, frame, -1, op_errno, NULL); return 0; } int stripe_fsetxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int op_ret, int op_errno, dict_t *xdata) { STRIPE_STACK_UNWIND (fsetxattr, frame, op_ret, op_errno, xdata); return 0; } int stripe_fsetxattr (call_frame_t *frame, xlator_t *this, fd_t *fd, dict_t *dict, int flags, dict_t *xdata) { data_pair_t *trav = NULL; int32_t op_ret = -1; int32_t op_errno = EINVAL; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (fd, err); GF_IF_INTERNAL_XATTR_GOTO ("trusted.*stripe*", dict, trav, op_errno, err); STACK_WIND (frame, stripe_fsetxattr_cbk, FIRST_CHILD(this), FIRST_CHILD(this)->fops->fsetxattr, fd, dict, flags, xdata); return 0; err: STRIPE_STACK_UNWIND (fsetxattr, frame, op_ret, op_errno, NULL); return 0; } int stripe_removexattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, dict_t *xdata) { STRIPE_STACK_UNWIND (removexattr, frame, op_ret, op_errno, xdata); return 0; } int stripe_removexattr (call_frame_t *frame, xlator_t *this, loc_t *loc, const char *name, dict_t *xdata) { int32_t op_errno = EINVAL; VALIDATE_OR_GOTO (this, err); GF_IF_NATIVE_XATTR_GOTO ("trusted.*stripe*", name, op_errno, err); VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (loc, err); STACK_WIND (frame, stripe_removexattr_cbk, FIRST_CHILD(this), FIRST_CHILD(this)->fops->removexattr, loc, name, xdata); return 0; err: STRIPE_STACK_UNWIND (removexattr, frame, -1, op_errno, NULL); return 0; } int stripe_fremovexattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, dict_t *xdata) { STRIPE_STACK_UNWIND (fremovexattr, frame, op_ret, op_errno, xdata); return 0; } int stripe_fremovexattr (call_frame_t *frame, xlator_t *this, fd_t *fd, const char *name, dict_t *xdata) { int32_t op_ret = -1; int32_t op_errno = EINVAL; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (fd, err); GF_IF_NATIVE_XATTR_GOTO ("trusted.*stripe*", name, op_errno, err); STACK_WIND (frame, stripe_fremovexattr_cbk, FIRST_CHILD(this), FIRST_CHILD(this)->fops->fremovexattr, fd, name, xdata); return 0; err: STRIPE_STACK_UNWIND (fremovexattr, frame, op_ret, op_errno, xdata); return 0; } int32_t stripe_readdirp_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int op_ret, int op_errno, inode_t *inode, struct iatt *stbuf, dict_t *xattr, struct iatt *parent) { stripe_local_t *local = NULL; call_frame_t *main_frame = NULL; stripe_local_t *main_local = NULL; gf_dirent_t *entry = NULL; call_frame_t *prev = NULL; int done = 0; local = frame->local; prev = cookie; entry = local->dirent; main_frame = local->orig_frame; main_local = main_frame->local; LOCK (&frame->lock); { local->call_count--; if (!local->call_count) done = 1; if (op_ret == -1) { local->op_errno = op_errno; local->op_ret = op_ret; goto unlock; } stripe_iatt_merge (stbuf, &entry->d_stat); local->stbuf_blocks += stbuf->ia_blocks; stripe_ctx_handle (this, prev, local, xattr); } unlock: UNLOCK(&frame->lock); if (done) { inode_ctx_put (entry->inode, this, (uint64_t) (long)local->fctx); done = 0; LOCK (&main_frame->lock); { main_local->wind_count--; if (!main_local->wind_count) done = 1; if (local->op_ret == -1) { main_local->op_errno = local->op_errno; main_local->op_ret = local->op_ret; } entry->d_stat.ia_blocks = local->stbuf_blocks; } UNLOCK (&main_frame->lock); if (done) { main_frame->local = NULL; STRIPE_STACK_UNWIND (readdir, main_frame, main_local->op_ret, main_local->op_errno, &main_local->entries, NULL); gf_dirent_free (&main_local->entries); stripe_local_wipe (main_local); mem_put (main_local); } frame->local = NULL; stripe_local_wipe (local); mem_put (local); STRIPE_STACK_DESTROY (frame); } return 0; } int32_t stripe_readdirp_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, gf_dirent_t *orig_entries, dict_t *xdata) { stripe_local_t *local = NULL; call_frame_t *prev = NULL; gf_dirent_t *local_entry = NULL; int32_t ret = -1; gf_dirent_t *tmp_entry = NULL; xlator_list_t *trav = NULL; loc_t loc = {0, }; inode_t *inode = NULL; char *path; int32_t count = 0; stripe_private_t *priv = NULL; int32_t subvols = 0; dict_t *xattrs = NULL; call_frame_t *local_frame = NULL; stripe_local_t *local_ent = NULL; if (!this || !frame || !frame->local || !cookie) { gf_log ("stripe", GF_LOG_DEBUG, "possible NULL deref"); goto out; } prev = cookie; local = frame->local; trav = this->children; priv = this->private; subvols = priv->child_count; LOCK (&frame->lock); { if (op_ret == -1) { gf_log (this->name, GF_LOG_WARNING, "%s returned error %s", prev->this->name, strerror (op_errno)); local->op_errno = op_errno; local->op_ret = op_ret; goto unlock; } else { local->op_ret = op_ret; list_splice_init (&orig_entries->list, &local->entries.list); local->wind_count = op_ret; } } unlock: UNLOCK (&frame->lock); if (op_ret == -1) goto out; xattrs = dict_new (); if (xattrs) (void) stripe_xattr_request_build (this, xattrs, 0, 0, 0); count = op_ret; ret = 0; list_for_each_entry_safe (local_entry, tmp_entry, (&local->entries.list), list) { if (!local_entry) break; if (!IA_ISREG (local_entry->d_stat.ia_type)) { LOCK (&frame->lock); { local->wind_count--; count = local->wind_count; } UNLOCK (&frame->lock); continue; } inode = inode_new (local->fd->inode->table); if (!inode) goto out; loc.inode = inode; loc.parent = local->fd->inode; ret = inode_path (local->fd->inode, local_entry->d_name, &path); if (ret != -1) { loc.path = path; } else if (inode) { ret = inode_path (inode, NULL, &path); if (ret != -1) { loc.path = path; } else { goto out; } } loc.name = strrchr (loc.path, '/'); loc.name++; uuid_copy (loc.gfid, local_entry->d_stat.ia_gfid); local_frame = copy_frame (frame); if (!local_frame) { op_errno = ENOMEM; op_ret = -1; goto out; } local_ent = mem_get0 (this->local_pool); if (!local_ent) { op_errno = ENOMEM; op_ret = -1; goto out; } local_ent->orig_frame = frame; local_ent->call_count = subvols; local_ent->dirent = local_entry; local_frame->local = local_ent; trav = this->children; while (trav) { STACK_WIND (local_frame, stripe_readdirp_lookup_cbk, trav->xlator, trav->xlator->fops->lookup, &loc, xattrs); trav = trav->next; } inode_unref (loc.inode); } out: if (!count) { /* all entries are directories */ frame->local = NULL; STRIPE_STACK_UNWIND (readdir, frame, local->op_ret, local->op_errno, &local->entries, NULL); gf_dirent_free (&local->entries); stripe_local_wipe (local); mem_put (local); } if (xattrs) dict_unref (xattrs); return 0; } int32_t stripe_readdirp (call_frame_t *frame, xlator_t *this, fd_t *fd, size_t size, off_t off, dict_t *xdata) { stripe_local_t *local = NULL; stripe_private_t *priv = NULL; xlator_list_t *trav = NULL; int op_errno = -1; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (fd, err); priv = this->private; trav = this->children; if (priv->first_child_down) { op_errno = ENOTCONN; goto err; } /* Initialization */ local = mem_get0 (this->local_pool); if (!local) { op_errno = ENOMEM; goto err; } frame->local = local; local->fd = fd_ref (fd); local->wind_count = 0; local->count = 0; local->op_ret = -1; INIT_LIST_HEAD(&local->entries); if (!trav) goto err; STACK_WIND (frame, stripe_readdirp_cbk, trav->xlator, trav->xlator->fops->readdirp, fd, size, off, xdata); return 0; err: op_errno = (op_errno == -1) ? errno : op_errno; STRIPE_STACK_UNWIND (readdir, frame, -1, op_errno, NULL, NULL); return 0; } int32_t mem_acct_init (xlator_t *this) { int ret = -1; if (!this) goto out; ret = xlator_mem_acct_init (this, gf_stripe_mt_end + 1); if (ret != 0) { gf_log (this->name, GF_LOG_ERROR, "Memory accounting init" "failed"); goto out; } out: return ret; } static int clear_pattern_list (stripe_private_t *priv) { struct stripe_options *prev = NULL; struct stripe_options *trav = NULL; int ret = -1; GF_VALIDATE_OR_GOTO ("stripe", priv, out); trav = priv->pattern; priv->pattern = NULL; while (trav) { prev = trav; trav = trav->next; GF_FREE (prev); } ret = 0; out: return ret; } int reconfigure (xlator_t *this, dict_t *options) { stripe_private_t *priv = NULL; data_t *data = NULL; int ret = -1; volume_option_t *opt = NULL; GF_ASSERT (this); GF_ASSERT (this->private); priv = this->private; ret = 0; LOCK (&priv->lock); { ret = clear_pattern_list (priv); if (ret) goto unlock; data = dict_get (options, "block-size"); if (data) { ret = set_stripe_block_size (this, priv, data->data); if (ret) goto unlock; } else { opt = xlator_volume_option_get (this, "block-size"); if (!opt) { gf_log (this->name, GF_LOG_WARNING, "option 'block-size' not found"); ret = -1; goto unlock; } if (gf_string2bytesize (opt->default_value, &priv->block_size)){ gf_log (this->name, GF_LOG_ERROR, "Unable to set default block-size "); ret = -1; goto unlock; } } } unlock: UNLOCK (&priv->lock); if (ret) goto out; ret = 0; out: return ret; } /** * init - This function is called when xlator-graph gets initialized. * The option given in volfiles are parsed here. * @this - */ int32_t init (xlator_t *this) { stripe_private_t *priv = NULL; volume_option_t *opt = NULL; xlator_list_t *trav = NULL; data_t *data = NULL; int32_t count = 0; int ret = -1; if (!this) goto out; trav = this->children; while (trav) { count++; trav = trav->next; } if (!count) { gf_log (this->name, GF_LOG_ERROR, "stripe configured without \"subvolumes\" option. " "exiting"); goto out; } if (!this->parents) { gf_log (this->name, GF_LOG_WARNING, "dangling volume. check volfile "); } if (count == 1) { gf_log (this->name, GF_LOG_ERROR, "stripe configured with only one \"subvolumes\" option." " please check the volume. exiting"); goto out; } priv = GF_CALLOC (1, sizeof (stripe_private_t), gf_stripe_mt_stripe_private_t); if (!priv) goto out; priv->xl_array = GF_CALLOC (count, sizeof (xlator_t *), gf_stripe_mt_xlator_t); if (!priv->xl_array) goto out; priv->state = GF_CALLOC (count, sizeof (int8_t), gf_stripe_mt_int8_t); if (!priv->state) goto out; priv->child_count = count; LOCK_INIT (&priv->lock); trav = this->children; count = 0; while (trav) { priv->xl_array[count++] = trav->xlator; trav = trav->next; } if (count > 256) { gf_log (this->name, GF_LOG_ERROR, "maximum number of stripe subvolumes supported " "is 256"); goto out; } ret = 0; LOCK (&priv->lock); { opt = xlator_volume_option_get (this, "block-size"); if (!opt) { gf_log (this->name, GF_LOG_WARNING, "option 'block-size' not found"); ret = -1; goto unlock; } if (gf_string2bytesize (opt->default_value, &priv->block_size)){ gf_log (this->name, GF_LOG_ERROR, "Unable to set default block-size "); ret = -1; goto unlock; } /* option stripe-pattern *avi:1GB,*pdf:16K */ data = dict_get (this->options, "block-size"); if (data) { ret = set_stripe_block_size (this, priv, data->data); if (ret) goto unlock; } } unlock: UNLOCK (&priv->lock); if (ret) goto out; GF_OPTION_INIT ("use-xattr", priv->xattr_supported, bool, out); /* notify related */ priv->nodes_down = priv->child_count; this->local_pool = mem_pool_new (stripe_local_t, 128); if (!this->local_pool) { ret = -1; gf_log (this->name, GF_LOG_ERROR, "failed to create local_t's memory pool"); goto out; } this->private = priv; ret = 0; out: if (ret) { if (priv) { if (priv->xl_array) GF_FREE (priv->xl_array); GF_FREE (priv); } } return ret; } /** * fini - Free all the private variables * @this - */ void fini (xlator_t *this) { stripe_private_t *priv = NULL; struct stripe_options *prev = NULL; struct stripe_options *trav = NULL; if (!this) goto out; priv = this->private; if (priv) { this->private = NULL; if (priv->xl_array) GF_FREE (priv->xl_array); trav = priv->pattern; while (trav) { prev = trav; trav = trav->next; GF_FREE (prev); } LOCK_DESTROY (&priv->lock); GF_FREE (priv); } out: return; } int32_t stripe_getxattr_unwind (call_frame_t *frame, int op_ret, int op_errno, dict_t *dict, dict_t *xdata) { STRIPE_STACK_UNWIND (getxattr, frame, op_ret, op_errno, dict, xdata); return 0; } int stripe_internal_getxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int op_ret, int op_errno, dict_t *xattr, dict_t *xdata) { char size_key[256] = {0,}; char index_key[256] = {0,}; char count_key[256] = {0,}; VALIDATE_OR_GOTO (frame, out); VALIDATE_OR_GOTO (frame->local, out); if (!xattr || (op_ret == -1)) goto out; sprintf (size_key, "trusted.%s.stripe-size", this->name); sprintf (count_key, "trusted.%s.stripe-count", this->name); sprintf (index_key, "trusted.%s.stripe-index", this->name); dict_del (xattr, size_key); dict_del (xattr, count_key); dict_del (xattr, index_key); out: STRIPE_STACK_UNWIND (getxattr, frame, op_ret, op_errno, xattr, xdata); return 0; } int stripe_getxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int op_ret, int op_errno, dict_t *xattr, dict_t *xdata) { int call_cnt = 0; stripe_local_t *local = NULL; VALIDATE_OR_GOTO (frame, out); VALIDATE_OR_GOTO (frame->local, out); local = frame->local; LOCK (&frame->lock); { call_cnt = --local->wind_count; } UNLOCK (&frame->lock); if (!xattr || (op_ret < 0)) goto out; local->op_ret = 0; if (!local->xattr) { local->xattr = dict_ref (xattr); } else { stripe_aggregate_xattr (local->xattr, xattr); } out: if (!call_cnt) { STRIPE_STACK_UNWIND (getxattr, frame, local->op_ret, op_errno, local->xattr, xdata); } return 0; } int32_t stripe_vgetxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, dict_t *dict, dict_t *xdata) { stripe_local_t *local = NULL; int32_t callcnt = 0; int32_t ret = -1; long cky = 0; char *xattr_val = NULL; char *xattr_serz = NULL; stripe_xattr_sort_t *xattr = NULL; dict_t *stripe_xattr = NULL; if (!frame || !frame->local || !this) { gf_log ("", GF_LOG_ERROR, "Possible NULL deref"); return ret; } local = frame->local; cky = (long) cookie; if (local->xsel[0] == '\0') { gf_log (this->name, GF_LOG_ERROR, "Empty xattr in cbk"); return ret; } LOCK (&frame->lock); { callcnt = --local->wind_count; if (!dict || (op_ret < 0)) goto out; if (!local->xattr_list) local->xattr_list = (stripe_xattr_sort_t *) GF_CALLOC (local->nallocs, sizeof (stripe_xattr_sort_t), gf_stripe_mt_xattr_sort_t); if (local->xattr_list) { ret = dict_get_str (dict, local->xsel, &xattr_val); if (ret) goto out; xattr = local->xattr_list + (int32_t) cky; xattr_val = gf_strdup (xattr_val); xattr->pos = cky; xattr->xattr_value = xattr_val; xattr->xattr_len = strlen (xattr_val); local->xattr_total_len += xattr->xattr_len + 1; } } out: UNLOCK (&frame->lock); if (!callcnt) { if (!local->xattr_total_len) goto unwind; stripe_xattr = dict_new (); if (!stripe_xattr) goto unwind; /* select filler based on ->xsel */ if (XATTR_IS_PATHINFO (local->xsel)) ret = stripe_fill_pathinfo_xattr (this, local, &xattr_serz); else { gf_log (this->name, GF_LOG_WARNING, "Unknown xattr in xattr request"); goto unwind; } if (!ret) { ret = dict_set_dynstr (stripe_xattr, local->xsel, xattr_serz); if (ret) gf_log (this->name, GF_LOG_ERROR, "Can't set %s key in dict", local->xsel); } unwind: STRIPE_STACK_UNWIND (getxattr, frame, op_ret, op_errno, stripe_xattr, NULL); ret = stripe_free_xattr_str (local); if (local->xattr_list) GF_FREE (local->xattr_list); if (stripe_xattr) dict_unref (stripe_xattr); } return ret; } int32_t stripe_getxattr (call_frame_t *frame, xlator_t *this, loc_t *loc, const char *name, dict_t *xdata) { stripe_local_t *local = NULL; xlator_list_t *trav = NULL; stripe_private_t *priv = NULL; int32_t op_errno = EINVAL; int i = 0; xlator_t **sub_volumes; int ret = 0; VALIDATE_OR_GOTO (frame, err); VALIDATE_OR_GOTO (this, err); VALIDATE_OR_GOTO (loc, err); VALIDATE_OR_GOTO (loc->path, err); VALIDATE_OR_GOTO (loc->inode, err); priv = this->private; trav = this->children; /* Initialization */ local = mem_get0 (this->local_pool); if (!local) { op_errno = ENOMEM; goto err; } local->op_ret = -1; frame->local = local; loc_copy (&local->loc, loc); if (name && (strcmp (GF_XATTR_MARKER_KEY, name) == 0) && (-1 == frame->root->pid)) { local->marker.call_count = priv->child_count; sub_volumes = alloca ( priv->child_count * sizeof (xlator_t *)); for (i = 0, trav = this->children; trav ; trav = trav->next, i++) { *(sub_volumes + i) = trav->xlator; } if (cluster_getmarkerattr (frame, this, loc, name, local, stripe_getxattr_unwind, sub_volumes, priv->child_count, MARKER_UUID_TYPE, priv->vol_uuid)) { op_errno = EINVAL; goto err; } return 0; } if (name && strncmp (name, GF_XATTR_QUOTA_SIZE_KEY, strlen (GF_XATTR_QUOTA_SIZE_KEY)) == 0) { local->wind_count = priv->child_count; for (i = 0, trav=this->children; i < priv->child_count; i++, trav = trav->next) { STACK_WIND (frame, stripe_getxattr_cbk, trav->xlator, trav->xlator->fops->getxattr, loc, name, xdata); } return 0; } if (name && ((strncmp (name, GF_XATTR_PATHINFO_KEY, strlen (GF_XATTR_PATHINFO_KEY)) == 0))) { if (IA_ISREG (loc->inode->ia_type)) { ret = inode_ctx_get (loc->inode, this, (uint64_t *) &local->fctx); if (ret) gf_log (this->name, GF_LOG_ERROR, "stripe size unavailable from fctx" " relying on pathinfo could lead to" " wrong results"); } local->nallocs = local->wind_count = priv->child_count; (void) strncpy (local->xsel, name, strlen (name)); /** * for xattrs that need info from all childs, fill ->xsel * as above and call the filler function in cbk based on * it */ for (i = 0, trav = this->children; i < priv->child_count; i++, trav = trav->next) { STACK_WIND_COOKIE (frame, stripe_vgetxattr_cbk, (void *) (long) i, trav->xlator, trav->xlator->fops->getxattr, loc, name, xdata); } return 0; } if (name &&(*priv->vol_uuid)) { if ((match_uuid_local (name, priv->vol_uuid) == 0) && (-1 == frame->root->pid)) { if (!IA_FILE_OR_DIR (loc->inode->ia_type)) local->marker.call_count = 1; else local->marker.call_count = priv->child_count; sub_volumes = alloca (local->marker.call_count * sizeof (xlator_t *)); for (i = 0, trav = this->children; i < local->marker.call_count; i++, trav = trav->next) { *(sub_volumes + i) = trav->xlator; } if (cluster_getmarkerattr (frame, this, loc, name, local, stripe_getxattr_unwind, sub_volumes, local->marker.call_count, MARKER_XTIME_TYPE, priv->vol_uuid)) { op_errno = EINVAL; goto err; } return 0; } } STACK_WIND (frame, stripe_internal_getxattr_cbk, FIRST_CHILD(this), FIRST_CHILD(this)->fops->getxattr, loc, name, xdata); return 0; err: STRIPE_STACK_UNWIND (getxattr, frame, -1, op_errno, NULL, NULL); return 0; } int32_t stripe_priv_dump (xlator_t *this) { char key[GF_DUMP_MAX_BUF_LEN]; int i = 0; stripe_private_t *priv = NULL; int ret = -1; struct stripe_options *options = NULL; GF_VALIDATE_OR_GOTO ("stripe", this, out); priv = this->private; if (!priv) goto out; ret = TRY_LOCK (&priv->lock); if (ret != 0) goto out; gf_proc_dump_add_section("xlator.cluster.stripe.%s.priv", this->name); gf_proc_dump_write("child_count","%d", priv->child_count); for (i = 0; i < priv->child_count; i++) { sprintf (key, "subvolumes[%d]", i); gf_proc_dump_write (key, "%s.%s", priv->xl_array[i]->type, priv->xl_array[i]->name); } options = priv->pattern; while (options != NULL) { gf_proc_dump_write ("path_pattern", "%s", priv->pattern->path_pattern); gf_proc_dump_write ("options_block_size", "%ul", options->block_size); options = options->next; } gf_proc_dump_write ("block_size", "%ul", priv->block_size); gf_proc_dump_write ("nodes-down", "%d", priv->nodes_down); gf_proc_dump_write ("first-child_down", "%d", priv->first_child_down); gf_proc_dump_write ("xattr_supported", "%d", priv->xattr_supported); UNLOCK (&priv->lock); out: return ret; } struct xlator_fops fops = { .stat = stripe_stat, .unlink = stripe_unlink, .rename = stripe_rename, .link = stripe_link, .truncate = stripe_truncate, .create = stripe_create, .open = stripe_open, .readv = stripe_readv, .writev = stripe_writev, .statfs = stripe_statfs, .flush = stripe_flush, .fsync = stripe_fsync, .ftruncate = stripe_ftruncate, .fstat = stripe_fstat, .mkdir = stripe_mkdir, .rmdir = stripe_rmdir, .lk = stripe_lk, .opendir = stripe_opendir, .fsyncdir = stripe_fsyncdir, .setattr = stripe_setattr, .fsetattr = stripe_fsetattr, .lookup = stripe_lookup, .mknod = stripe_mknod, .setxattr = stripe_setxattr, .fsetxattr = stripe_fsetxattr, .getxattr = stripe_getxattr, .removexattr = stripe_removexattr, .fremovexattr = stripe_fremovexattr, .readdirp = stripe_readdirp, }; struct xlator_cbks cbks = { .release = stripe_release, .forget = stripe_forget, }; struct xlator_dumpops dumpops = { .priv = stripe_priv_dump, }; struct volume_options options[] = { { .key = {"block-size"}, .type = GF_OPTION_TYPE_SIZE_LIST, .default_value = "128KB", .min = STRIPE_MIN_BLOCK_SIZE, .description = "Size of the stripe unit that would be read " "from or written to the striped servers." }, { .key = {"use-xattr"}, .type = GF_OPTION_TYPE_BOOL, .default_value = "true" }, { .key = {NULL} }, };