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authorRajesh Joseph <rjoseph@redhat.com>2014-12-08 14:25:22 +0530
committerNiels de Vos <ndevos@redhat.com>2014-12-08 07:32:46 -0800
commit6b83a658ede66ebbb0983f1e4a326fd12cc91c34 (patch)
tree76824db569ffbc378c648ebb756413da601ef3ae /api/src
parentcd6ffa93dc2a3cb1fcc5438086aebc54f368c2e9 (diff)
gfapi: new inode created in glfs_resolve_component even if inode is in inode table
problem: USS allows split-brain file to be accessed while main volume gives I/O error. cause: AFR detects split-brain on lookup. It stores this information in inode context. open and readv fop checks this flag from inode context. open and readv fop fails if split-brain flag is set for the file. USS uses gfapi to access snapshot volume. During open call gfapi internally calls glfs_resolve_component. glfs_resolve_component generates a new inode even if inode is present for the file. Because of which afr_lookup acts on a new inode which does not contain the split-brain flag. Bug: 1171615 Change-Id: I1b4fddf4bd3c734a319ecfae804a3439866d157c Signed-off-by: Rajesh Joseph <rjoseph@redhat.com> Reviewed-on: http://review.gluster.org/9253 Reviewed-by: Vijaikumar Mallikarjuna <vmallika@redhat.com> Reviewed-by: Raghavendra Talur <rtalur@redhat.com> Reviewed-by: Poornima G <pgurusid@redhat.com> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Niels de Vos <ndevos@redhat.com>
Diffstat (limited to 'api/src')
-rw-r--r--api/src/glfs-resolve.c10
1 files changed, 4 insertions, 6 deletions
diff --git a/api/src/glfs-resolve.c b/api/src/glfs-resolve.c
index e3f14f9a364..7aa5cc6158e 100644
--- a/api/src/glfs-resolve.c
+++ b/api/src/glfs-resolve.c
@@ -246,12 +246,10 @@ glfs_resolve_component (struct glfs *fs, xlator_t *subvol, inode_t *parent,
Fill loc.name so that we make use md-cache.
md-cache is not valid for nameless lookups.
*/
- if (__is_root_gfid (parent->gfid)) {
- if ((strcmp (component, ".") == 0) ||
- (strcmp (component, "..") == 0)) {
- loc.inode = inode_ref (parent);
- loc.name = ".";
- }
+ if (__is_root_gfid (parent->gfid) &&
+ (strcmp (component, "..") == 0)) {
+ loc.inode = inode_ref (parent);
+ loc.name = ".";
} else {
if (strcmp (component, ".") == 0)
loc.inode = inode_ref (parent);