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authorMohammed Rafi KC <rkavunga@redhat.com>2015-04-23 23:13:50 +0530
committerNiels de Vos <ndevos@redhat.com>2015-05-10 08:51:54 -0700
commit10388ffa61409f944ed29dca27d12259f2237634 (patch)
tree4edbbab85827d8a8480d411ffc8495e86b9f8561
parentda48a6a596251c19a8ddb1bdfec3da9744a78b8f (diff)
uss : implement statfs fop for snapd
Backport of http://review.gluster.org/#/c/10358/ snapview-client and snapview-server doesnot have statfs fop implemented Change-Id: I2cdd4c5784414b0549a01af9a28dbc723b7cdc67 BUG: 1218741 Signed-off-by: Mohammed Rafi KC <rkavunga@redhat.com> Reviewed-on: http://review.gluster.org/10740 Tested-by: NetBSD Build System Reviewed-by: Niels de Vos <ndevos@redhat.com> Reviewed-by: Raghavendra Bhat <raghavendra@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com>
-rw-r--r--xlators/features/snapview-client/src/snapview-client.c59
-rw-r--r--xlators/features/snapview-server/src/snapview-server.c53
2 files changed, 112 insertions, 0 deletions
diff --git a/xlators/features/snapview-client/src/snapview-client.c b/xlators/features/snapview-client/src/snapview-client.c
index 8351922..2f304aa 100644
--- a/xlators/features/snapview-client/src/snapview-client.c
+++ b/xlators/features/snapview-client/src/snapview-client.c
@@ -498,6 +498,64 @@ out:
return 0;
}
+int32_t
+svc_statfs (call_frame_t *frame, xlator_t *this, loc_t *loc,
+ dict_t *xdata)
+{
+ xlator_t *subvolume = NULL;
+ int32_t ret = -1;
+ int inode_type = -1;
+ int32_t op_ret = -1;
+ int32_t op_errno = EINVAL;
+ gf_boolean_t wind = _gf_false;
+ svc_private_t *priv = NULL;
+ const char *path = NULL;
+ int path_len = -1;
+ int snap_len = -1;
+ loc_t root_loc = {0,};
+ loc_t *temp_loc = NULL;
+
+ GF_VALIDATE_OR_GOTO ("svc", this, out);
+ GF_VALIDATE_OR_GOTO (this->name, frame, out);
+ GF_VALIDATE_OR_GOTO (this->name, loc, out);
+ GF_VALIDATE_OR_GOTO (this->name, loc->inode, out);
+
+ priv = this->private;
+ SVC_GET_SUBVOL_FROM_CTX (this, op_ret, op_errno, inode_type, ret,
+ loc->inode, subvolume, out);
+ path_len = strlen (loc->path);
+ snap_len = strlen (priv->path);
+ temp_loc = loc;
+
+ if (path_len >= snap_len && inode_type == VIRTUAL_INODE) {
+ path = &loc->path[path_len - snap_len];
+ if (!strcmp (path, priv->path)) {
+ /*
+ * statfs call for virtual snap directory.
+ * Sent the fops to parent volume by removing
+ * virtual directory from path
+ */
+ subvolume = FIRST_CHILD (this);
+ root_loc.path = "/";
+ gf_uuid_clear(root_loc.gfid);
+ root_loc.gfid[15] = 1;
+ root_loc.inode = loc->inode->table->root;
+ root_loc.inode->ia_type = IA_IFDIR;
+ temp_loc = &root_loc;
+ }
+ }
+
+ STACK_WIND_TAIL (frame, subvolume, subvolume->fops->statfs,
+ temp_loc, xdata);
+
+ wind = _gf_true;
+out:
+ if (!wind)
+ SVC_STACK_UNWIND (statfs, frame, op_ret, op_errno,
+ NULL, NULL);
+ return 0;
+}
+
/* should all the fops be handled like lookup is supposed to be
handled? i.e just based on inode type decide where the call should
be sent and in the call back update the contexts.
@@ -2303,6 +2361,7 @@ struct xlator_fops fops = {
.opendir = svc_opendir,
.stat = svc_stat,
.fstat = svc_fstat,
+ .statfs = svc_statfs,
.rmdir = svc_rmdir,
.rename = svc_rename,
.mkdir = svc_mkdir,
diff --git a/xlators/features/snapview-server/src/snapview-server.c b/xlators/features/snapview-server/src/snapview-server.c
index 035dd54..3415ce0 100644
--- a/xlators/features/snapview-server/src/snapview-server.c
+++ b/xlators/features/snapview-server/src/snapview-server.c
@@ -1800,6 +1800,58 @@ out:
}
int32_t
+svs_statfs (call_frame_t *frame, xlator_t *this, loc_t *loc, dict_t *xdata)
+{
+ svs_private_t *priv = NULL;
+ struct statvfs buf = {0, };
+ int32_t op_errno = EINVAL;
+ int32_t op_ret = -1;
+ svs_inode_t *inode_ctx = NULL;
+ glfs_t *fs = NULL;
+ glfs_object_t *object = NULL;
+ int ret = -1;
+
+ GF_VALIDATE_OR_GOTO ("snap-view-daemon", this, out);
+ GF_VALIDATE_OR_GOTO (this->name, frame, out);
+ GF_VALIDATE_OR_GOTO (this->name, loc, out);
+ GF_VALIDATE_OR_GOTO (this->name, loc->inode, out);
+
+ priv = this->private;
+
+ /* Instead of doing the check of whether it is a entry point directory
+ or not by checking the name of the entry and then deciding what
+ to do, just check the inode context and decide what to be done.
+ */
+ inode_ctx = svs_inode_ctx_get (this, loc->inode);
+ if (!inode_ctx) {
+ gf_log (this->name, GF_LOG_ERROR, "inode context not found for"
+ " %s", uuid_utoa (loc->inode->gfid));
+ op_ret = -1;
+ op_errno = EINVAL;
+ goto out;
+ }
+
+ SVS_GET_INODE_CTX_INFO(inode_ctx, fs, object, this, loc, op_ret,
+ op_errno, out);
+
+ ret = glfs_h_statfs (fs, object, &buf);
+ if (ret) {
+ gf_log (this->name, GF_LOG_ERROR, "glfs_h_statvfs on %s "
+ "(gfid: %s) failed", loc->name,
+ uuid_utoa (loc->inode->gfid));
+ op_ret = -1;
+ op_errno = errno;
+ goto out;
+ }
+ op_ret = ret;
+
+out:
+ STACK_UNWIND_STRICT (statfs, frame, op_ret, op_errno, &buf, xdata);
+ return 0;
+}
+
+
+int32_t
svs_open (call_frame_t *frame, xlator_t *this, loc_t *loc, int32_t flags,
fd_t *fd, dict_t *xdata)
{
@@ -2218,6 +2270,7 @@ fini (xlator_t *this)
struct xlator_fops fops = {
.lookup = svs_lookup,
.stat = svs_stat,
+ .statfs = svs_statfs,
.opendir = svs_opendir,
.readdirp = svs_readdirp,
.readdir = svs_readdir,