path: root/tests/bugs/replicate/bug-1305031-block-reads-on-metadata-sbrain.t
Commit message (Collapse)AuthorAgeFilesLines
* afr:Don't wind reads for files in metadata split-brainRavishankar N2016-06-241-0/+40
Problem: For a read on a file in metadata split-brain: 1.lookup_done resets event_generation to zero. 2. readv is issued, goes to inode refresh due to mismatching event_gen. 3. After refresh is successful, we update event_generation, data and metdata readable. 3. We then call afr_read_txn_refresh_done() which in turn calls afr_inode_get_readable() but doesn't check for EIO. So afr_readv_wind is called with local->readable (which is populated with data_readable), thus winding the read to a brick. 4. Also, further parallel reads that come directly go to the wind path because there is no inode_refresh needed. Fix: 1.For any afr_read_txn(), readable must be an intersection of data and metadata readable. 2.Check for EIO in afr_read_txn_refresh_done(). Change-Id: I22dd221fdfaf96d7aced2f474e28ed1337d69f0e BUG: 1305031 Signed-off-by: Ravishankar N <> Reviewed-on: Reviewed-by: Ashish Pandey <> Smoke: Gluster Build System <> NetBSD-regression: NetBSD Build System <> CentOS-regression: Gluster Build System <> Reviewed-by: Pranith Kumar Karampuri <>