From a36c812756405999d79fd29c329fef73f6b7b778 Mon Sep 17 00:00:00 2001 From: Pranith Kumar K Date: Mon, 7 Oct 2013 16:00:59 +0530 Subject: features/marker: Filter quota xattrs on file as well Problem: Quota contributions of a file/directory are tracked by quota xlator using xattrs on the file. Quota allows these xattrs to be healed as part of metadata self-heal. This leads to wrong quota calculations on this brick after self-heal because quota xattrs don't represent the actual contributions on the brick anymore. Fix: Don't let self-heal of this xattr happen as part of self-heal by filtering quota xattrs on file in listxattr. Change-Id: Iea68a116595ba271e58c6fdcc3dd21c7bb55ebb3 BUG: 1035576 Signed-off-by: Pranith Kumar K Reviewed-on: http://review.gluster.org/6374 Tested-by: Gluster Build System Reviewed-by: Vijay Bellur --- xlators/features/marker/src/marker-quota.c | 2 +- xlators/features/marker/src/marker.c | 71 +++++++++++++++++++++++++++++- 2 files changed, 70 insertions(+), 3 deletions(-) (limited to 'xlators/features') diff --git a/xlators/features/marker/src/marker-quota.c b/xlators/features/marker/src/marker-quota.c index afc568fbd9e..a758e938f69 100644 --- a/xlators/features/marker/src/marker-quota.c +++ b/xlators/features/marker/src/marker-quota.c @@ -1687,7 +1687,7 @@ unlock: } UNLOCK (&contribution->lock); - gf_log (this->name, GF_LOG_DEBUG, "%s %"PRId64 "%"PRId64, + gf_log (this->name, GF_LOG_DEBUG, "%s %"PRId64 " %"PRId64, local->loc.path, size_int, contri_int); local->delta = size_int - contri_int; diff --git a/xlators/features/marker/src/marker.c b/xlators/features/marker/src/marker.c index dbe9d530fad..280d43ae38b 100644 --- a/xlators/features/marker/src/marker.c +++ b/xlators/features/marker/src/marker.c @@ -281,15 +281,65 @@ marker_getxattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this, int32_t op_ret, int32_t op_errno, dict_t *dict, dict_t *xdata) { + int ret = 0; + char *src = NULL; + char *dst = NULL; + int len = 0; + marker_local_t *local = NULL; + + local = frame->local; + + if (cookie) { gf_log (this->name, GF_LOG_DEBUG, "Filtering the quota extended attributes"); - dict_foreach_fnmatch (dict, "trusted.glusterfs.quota*", - marker_filter_quota_xattr, NULL); + /* If the getxattr is from a non special client, then do not + copy the quota related xattrs (except the quota limit key + i.e trusted.glusterfs.quota.limit-set which has been set by + glusterd on the directory on which quota limit is set.) for + directories. Let the healing of xattrs happen upon lookup. + NOTE: setting of trusted.glusterfs.quota.limit-set as of now + happens from glusterd. It should be moved to quotad. Also + trusted.glusterfs.quota.limit-set is set on directory which + is permanent till quota is removed on that directory or limit + is changed. So let that xattr be healed by other xlators + properly whenever directory healing is done. + */ + ret = dict_get_ptr_and_len (dict, QUOTA_LIMIT_KEY, + (void **)&src, &len); + if (ret) { + gf_log (this->name, GF_LOG_DEBUG, "dict_get on %s " + "failed", QUOTA_LIMIT_KEY); + } else { + dst = GF_CALLOC (len, sizeof (char), gf_common_mt_char); + if (dst) + memcpy (dst, src, len); + } + + /* + * Except limit-set xattr, rest of the xattrs are maintained + * by quota xlator. Don't expose them to other xlators. + * This filter makes sure quota xattrs are not healed as part of + * metadata self-heal + */ + GF_REMOVE_INTERNAL_XATTR ("trusted.glusterfs.quota*", dict); + if (!ret && IA_ISDIR (local->loc.inode->ia_type) && dst) { + ret = dict_set_dynptr (dict, QUOTA_LIMIT_KEY, + dst, len); + if (ret) + gf_log (this->name, GF_LOG_WARNING, "setting " + "key %s failed", QUOTA_LIMIT_KEY); + else + dst = NULL; + } } + GF_FREE (dst); + + frame->local = NULL; STACK_UNWIND_STRICT (getxattr, frame, op_ret, op_errno, dict, xdata); + marker_local_unref (local); return 0; } @@ -300,9 +350,21 @@ marker_getxattr (call_frame_t *frame, xlator_t *this, loc_t *loc, gf_boolean_t ret = _gf_false; marker_conf_t *priv = NULL; unsigned long cookie = 0; + marker_local_t *local = NULL; priv = this->private; + frame->local = mem_get0 (this->local_pool); + local = frame->local; + if (local == NULL) + goto out; + + MARKER_INIT_LOCAL (frame, local); + + ret = loc_copy (&local->loc, loc); + if (ret < 0) + goto out; + gf_log (this->name, GF_LOG_DEBUG, "USER:PID = %d", frame->root->pid); if (priv && priv->feature_enabled & GF_XTIME) @@ -323,6 +385,11 @@ marker_getxattr (call_frame_t *frame, xlator_t *this, loc_t *loc, name, xdata); } + return 0; +out: + frame->local = NULL; + STACK_UNWIND_STRICT (getxattr, frame, -1, ENOMEM, NULL, NULL); + marker_local_unref (local); return 0; } -- cgit