diff options
Diffstat (limited to 'xlators/cluster/afr/src/afr-common.c')
| -rw-r--r-- | xlators/cluster/afr/src/afr-common.c | 368 |
1 files changed, 168 insertions, 200 deletions
diff --git a/xlators/cluster/afr/src/afr-common.c b/xlators/cluster/afr/src/afr-common.c index bc34a023d2f..15c926b52c8 100644 --- a/xlators/cluster/afr/src/afr-common.c +++ b/xlators/cluster/afr/src/afr-common.c @@ -6722,259 +6722,218 @@ out: return _gf_true; } -int -afr_selfheal_locked_metadata_inspect(call_frame_t *frame, xlator_t *this, - inode_t *inode, gf_boolean_t *msh, - unsigned char *pending) +static dict_t * +afr_set_heal_info(char *status) { + dict_t *dict = NULL; int ret = -1; - unsigned char *locked_on = NULL; - unsigned char *sources = NULL; - unsigned char *sinks = NULL; - unsigned char *healed_sinks = NULL; - unsigned char *undid_pending = NULL; - struct afr_reply *locked_replies = NULL; - - afr_private_t *priv = this->private; - locked_on = alloca0(priv->child_count); - sources = alloca0(priv->child_count); - sinks = alloca0(priv->child_count); - healed_sinks = alloca0(priv->child_count); - undid_pending = alloca0(priv->child_count); + dict = dict_new(); + if (!dict) { + ret = -ENOMEM; + goto out; + } - locked_replies = alloca0(sizeof(*locked_replies) * priv->child_count); + ret = dict_set_dynstr_sizen(dict, "heal-info", status); + if (ret) + gf_msg("", GF_LOG_WARNING, -ret, AFR_MSG_DICT_SET_FAILED, + "Failed to set heal-info key to " + "%s", + status); +out: + /* Any error other than EINVAL, dict_set_dynstr frees status */ + if (ret == -ENOMEM || ret == -EINVAL) { + GF_FREE(status); + } - ret = afr_selfheal_inodelk(frame, this, inode, this->name, LLONG_MAX - 1, 0, - locked_on); - { - if (ret == 0) { - /* Not a single lock */ - ret = -afr_final_errno(frame->local, priv); - if (ret == 0) - ret = -ENOTCONN; /* all invalid responses */ - goto out; - } - ret = __afr_selfheal_metadata_prepare( - frame, this, inode, locked_on, sources, sinks, healed_sinks, - undid_pending, locked_replies, pending); - *msh = afr_decide_heal_info(priv, sources, ret); + if (ret && dict) { + dict_unref(dict); + dict = NULL; } - afr_selfheal_uninodelk(frame, this, inode, this->name, LLONG_MAX - 1, 0, - locked_on); -out: - if (locked_replies) - afr_replies_wipe(locked_replies, priv->child_count); - return ret; + return dict; } -int -afr_selfheal_locked_data_inspect(call_frame_t *frame, xlator_t *this, fd_t *fd, - gf_boolean_t *dsh, unsigned char *pflag) +static gf_boolean_t +afr_is_dirty_count_non_unary_for_txn(xlator_t *this, struct afr_reply *replies, + afr_transaction_type type) { - int ret = -1; - unsigned char *data_lock = NULL; - unsigned char *sources = NULL; - unsigned char *sinks = NULL; - unsigned char *healed_sinks = NULL; - unsigned char *undid_pending = NULL; - afr_private_t *priv = NULL; - struct afr_reply *locked_replies = NULL; - inode_t *inode = fd->inode; + afr_private_t *priv = this->private; + int *dirty = alloca0(priv->child_count * sizeof(int)); + int i = 0; - priv = this->private; - data_lock = alloca0(priv->child_count); - sources = alloca0(priv->child_count); - sinks = alloca0(priv->child_count); - healed_sinks = alloca0(priv->child_count); - undid_pending = alloca0(priv->child_count); + afr_selfheal_extract_xattr(this, replies, type, dirty, NULL); + for (i = 0; i < priv->child_count; i++) { + if (dirty[i] > 1) + return _gf_true; + } - locked_replies = alloca0(sizeof(*locked_replies) * priv->child_count); + return _gf_false; +} - ret = afr_selfheal_inodelk(frame, this, inode, this->name, 0, 0, data_lock); - { - if (ret == 0) { - ret = -afr_final_errno(frame->local, priv); - if (ret == 0) - ret = -ENOTCONN; /* all invalid responses */ - goto out; - } - ret = __afr_selfheal_data_prepare(frame, this, inode, data_lock, - sources, sinks, healed_sinks, - undid_pending, locked_replies, pflag); - *dsh = afr_decide_heal_info(priv, sources, ret); +static gf_boolean_t +afr_is_dirty_count_non_unary(xlator_t *this, struct afr_reply *replies, + ia_type_t ia_type) +{ + gf_boolean_t data_chk = _gf_false; + gf_boolean_t mdata_chk = _gf_false; + gf_boolean_t entry_chk = _gf_false; + + switch (ia_type) { + case IA_IFDIR: + mdata_chk = _gf_true; + entry_chk = _gf_true; + break; + case IA_IFREG: + mdata_chk = _gf_true; + data_chk = _gf_true; + break; + default: + /*IA_IFBLK, IA_IFCHR, IA_IFLNK, IA_IFIFO, IA_IFSOCK*/ + mdata_chk = _gf_true; + break; } - afr_selfheal_uninodelk(frame, this, inode, this->name, 0, 0, data_lock); -out: - if (locked_replies) - afr_replies_wipe(locked_replies, priv->child_count); - return ret; + + if (data_chk && afr_is_dirty_count_non_unary_for_txn( + this, replies, AFR_DATA_TRANSACTION)) { + return _gf_true; + } else if (mdata_chk && afr_is_dirty_count_non_unary_for_txn( + this, replies, AFR_METADATA_TRANSACTION)) { + return _gf_true; + } else if (entry_chk && afr_is_dirty_count_non_unary_for_txn( + this, replies, AFR_ENTRY_TRANSACTION)) { + return _gf_true; + } + + return _gf_false; } -int -afr_selfheal_locked_entry_inspect(call_frame_t *frame, xlator_t *this, - inode_t *inode, gf_boolean_t *esh, - unsigned char *pflag) +static int +afr_update_heal_status(xlator_t *this, struct afr_reply *replies, + char *index_vgfid, ia_type_t ia_type, gf_boolean_t *esh, + gf_boolean_t *dsh, gf_boolean_t *msh) { int ret = -1; - int source = -1; + GF_UNUSED int ret1 = 0; + int i = 0; + int io_domain_lk_count = 0; + int shd_domain_lk_count = 0; afr_private_t *priv = NULL; - unsigned char *locked_on = NULL; - unsigned char *data_lock = NULL; - unsigned char *sources = NULL; - unsigned char *sinks = NULL; - unsigned char *healed_sinks = NULL; - struct afr_reply *locked_replies = NULL; - gf_boolean_t granular_locks = _gf_false; + char *key1 = NULL; + char *key2 = NULL; priv = this->private; - granular_locks = priv->granular_locks; /*Assign to local variable so that - reconfigure doesn't change this - value between locking and unlocking - below*/ - locked_on = alloca0(priv->child_count); - data_lock = alloca0(priv->child_count); - sources = alloca0(priv->child_count); - sinks = alloca0(priv->child_count); - healed_sinks = alloca0(priv->child_count); - - locked_replies = alloca0(sizeof(*locked_replies) * priv->child_count); + key1 = alloca0(strlen(GLUSTERFS_INODELK_DOM_PREFIX) + 2 + + strlen(this->name)); + key2 = alloca0(strlen(GLUSTERFS_INODELK_DOM_PREFIX) + 2 + + strlen(priv->sh_domain)); + sprintf(key1, "%s:%s", GLUSTERFS_INODELK_DOM_PREFIX, this->name); + sprintf(key2, "%s:%s", GLUSTERFS_INODELK_DOM_PREFIX, priv->sh_domain); - if (!granular_locks) { - ret = afr_selfheal_tryentrylk(frame, this, inode, priv->sh_domain, NULL, - locked_on); - } - { - if (!granular_locks && ret == 0) { - ret = -afr_final_errno(frame->local, priv); - if (ret == 0) - ret = -ENOTCONN; /* all invalid responses */ - goto out; + for (i = 0; i < priv->child_count; i++) { + if ((replies[i].valid != 1) || (replies[i].op_ret != 0)) + continue; + if (!io_domain_lk_count) { + ret1 = dict_get_int32(replies[i].xdata, key1, &io_domain_lk_count); } + if (!shd_domain_lk_count) { + ret1 = dict_get_int32(replies[i].xdata, key2, &shd_domain_lk_count); + } + } - ret = afr_selfheal_entrylk(frame, this, inode, this->name, NULL, - data_lock); - { - if (ret == 0) { - ret = -afr_final_errno(frame->local, priv); - if (ret == 0) - ret = -ENOTCONN; - /* all invalid responses */ - goto unlock; - } - ret = __afr_selfheal_entry_prepare(frame, this, inode, data_lock, - sources, sinks, healed_sinks, - locked_replies, &source, pflag); - if ((ret == 0) && (*pflag & PFLAG_SBRAIN)) - ret = -EIO; - *esh = afr_decide_heal_info(priv, sources, ret); + if (!strcmp(index_vgfid, GF_XATTROP_INDEX_GFID)) { + if (shd_domain_lk_count) { + ret = -EAGAIN; /*For 'possibly-healing'. */ + } else { + ret = 0; /*needs heal. Just set a non -ve value so that it is + assumed as the source index.*/ + } + } else if (!strcmp(index_vgfid, GF_XATTROP_DIRTY_GFID)) { + if ((afr_is_dirty_count_non_unary(this, replies, ia_type)) || + (!io_domain_lk_count)) { + /* Needs heal. */ + ret = 0; + } else { + /* No heal needed. */ + *dsh = *esh = *msh = 0; } - afr_selfheal_unentrylk(frame, this, inode, this->name, NULL, data_lock, - NULL); } -unlock: - if (!granular_locks) - afr_selfheal_unentrylk(frame, this, inode, priv->sh_domain, NULL, - locked_on, NULL); -out: - if (locked_replies) - afr_replies_wipe(locked_replies, priv->child_count); return ret; } +/*return EIO, EAGAIN or pending*/ int -afr_selfheal_locked_inspect(call_frame_t *frame, xlator_t *this, uuid_t gfid, - inode_t **inode, gf_boolean_t *entry_selfheal, - gf_boolean_t *data_selfheal, - gf_boolean_t *metadata_selfheal, - unsigned char *pending) - +afr_lockless_inspect(call_frame_t *frame, xlator_t *this, uuid_t gfid, + inode_t **inode, char *index_vgfid, + gf_boolean_t *entry_selfheal, gf_boolean_t *data_selfheal, + gf_boolean_t *metadata_selfheal, unsigned char *pending) { int ret = -1; - fd_t *fd = NULL; + int i = 0; + afr_private_t *priv = NULL; + struct afr_reply *replies = NULL; gf_boolean_t dsh = _gf_false; gf_boolean_t msh = _gf_false; gf_boolean_t esh = _gf_false; + unsigned char *sources = NULL; + unsigned char *sinks = NULL; + unsigned char *valid_on = NULL; + uint64_t *witness = NULL; + + priv = this->private; + replies = alloca0(sizeof(*replies) * priv->child_count); + sources = alloca0(sizeof(*sources) * priv->child_count); + sinks = alloca0(sizeof(*sinks) * priv->child_count); + witness = alloca0(sizeof(*witness) * priv->child_count); + valid_on = alloca0(sizeof(*valid_on) * priv->child_count); ret = afr_selfheal_unlocked_inspect(frame, this, gfid, inode, &dsh, &msh, - &esh); + &esh, replies); if (ret) goto out; - - /* For every heal type hold locks and check if it indeed needs heal */ - - /* Heal-info does an open() on the file being examined so that the - * current eager-lock holding client, if present, at some point sees - * open-fd count being > 1 and releases the eager-lock so that heal-info - * doesn't remain blocked forever until IO completes. - */ - if ((*inode)->ia_type == IA_IFREG) { - ret = afr_selfheal_data_open(this, *inode, &fd); - if (ret < 0) { - gf_msg_debug(this->name, -ret, "%s: Failed to open", - uuid_utoa((*inode)->gfid)); - goto out; + for (i = 0; i < priv->child_count; i++) { + if (replies[i].valid && replies[i].op_ret == 0) { + valid_on[i] = 1; } } - if (msh) { - ret = afr_selfheal_locked_metadata_inspect(frame, this, *inode, &msh, - pending); - if (ret == -EIO) + ret = afr_selfheal_find_direction(frame, this, replies, + AFR_METADATA_TRANSACTION, valid_on, + sources, sinks, witness, pending); + if (*pending & PFLAG_SBRAIN) + ret = -EIO; + if (ret) goto out; } - if (dsh) { - ret = afr_selfheal_locked_data_inspect(frame, this, fd, &dsh, pending); - if (ret == -EIO || (ret == -EAGAIN)) + ret = afr_selfheal_find_direction(frame, this, replies, + AFR_DATA_TRANSACTION, valid_on, + sources, sinks, witness, pending); + if (*pending & PFLAG_SBRAIN) + ret = -EIO; + if (ret) goto out; } - if (esh) { - ret = afr_selfheal_locked_entry_inspect(frame, this, *inode, &esh, - pending); + ret = afr_selfheal_find_direction(frame, this, replies, + AFR_ENTRY_TRANSACTION, valid_on, + sources, sinks, witness, pending); + if (*pending & PFLAG_SBRAIN) + ret = -EIO; + if (ret) + goto out; } + ret = afr_update_heal_status(this, replies, index_vgfid, (*inode)->ia_type, + &esh, &dsh, &msh); out: *data_selfheal = dsh; *entry_selfheal = esh; *metadata_selfheal = msh; - if (fd) - fd_unref(fd); + if (replies) + afr_replies_wipe(replies, priv->child_count); return ret; } -static dict_t * -afr_set_heal_info(char *status) -{ - dict_t *dict = NULL; - int ret = -1; - - dict = dict_new(); - if (!dict) { - ret = -ENOMEM; - goto out; - } - - ret = dict_set_dynstr_sizen(dict, "heal-info", status); - if (ret) - gf_msg("", GF_LOG_WARNING, -ret, AFR_MSG_DICT_SET_FAILED, - "Failed to set heal-info key to " - "%s", - status); -out: - /* Any error other than EINVAL, dict_set_dynstr frees status */ - if (ret == -ENOMEM || ret == -EINVAL) { - GF_FREE(status); - } - - if (ret && dict) { - dict_unref(dict); - dict = NULL; - } - return dict; -} - int afr_get_heal_info(call_frame_t *frame, xlator_t *this, loc_t *loc) { @@ -6990,6 +6949,14 @@ afr_get_heal_info(call_frame_t *frame, xlator_t *this, loc_t *loc) char *status = NULL; call_frame_t *heal_frame = NULL; afr_local_t *heal_local = NULL; + afr_local_t *local = NULL; + char *index_vgfid = NULL; + + local = frame->local; + if (dict_get_str(local->xdata_req, "index-vgfid", &index_vgfid)) { + ret = -1; + goto out; + } /*Use frame with lk-owner set*/ heal_frame = afr_frame_create(frame->this, &op_errno); @@ -6999,9 +6966,10 @@ afr_get_heal_info(call_frame_t *frame, xlator_t *this, loc_t *loc) } heal_local = heal_frame->local; heal_frame->local = frame->local; - ret = afr_selfheal_locked_inspect(heal_frame, this, loc->gfid, &inode, - &entry_selfheal, &data_selfheal, - &metadata_selfheal, &pending); + + ret = afr_lockless_inspect(heal_frame, this, loc->gfid, &inode, index_vgfid, + &entry_selfheal, &data_selfheal, + &metadata_selfheal, &pending); if (ret == -ENOMEM) { ret = -1; |