Problem: See github issue for details. Fix: -In lookup if the entry exists in 2 out of 3 bricks, don't fail the lookup with ENOENT just because there is an entrylk on the parent. Consider quorum before deciding. -If entry FOP does not succeed on quorum no. of bricks, do not perform new entry mark. Fixes: #1303 Change-Id: I56df8c89ad53b29fa450c7930a7b7ccec9f4a6c5 Signed-off-by: Ravishankar N <ravishankar@redhat.com> (cherry picked from commit c4a6748f25d2c1ab3ebcf89952278ebf94c8d371)
To keep consistency inside transactions started by locking an entry or an inode, this change delays the removal of entries that are currently locked by one or more clients. Once all locks are released, the removal is processed. It has also been improved the detection of stale inodes in the locking code of EC. Fixes: #990 Change-Id: Ic8ba23d9480f80c7f74e7a310bf8a15922320fd5 Signed-off-by: Xavi Hernandez <xhernandez@redhat.com>
Problem: In a replicate/arbiter volume if file creations or writes fails on quorum number of bricks and on one brick it is due to ENOSPC and on other brick it fails for a different reason, it may fail with errors other than ENOSPC in some cases. Fix: Prioritize ENOSPC over other lesser priority errors and do not set op_errno in posix_gfid_set if op_ret is 0 to avoid receiving any error_no which can be misinterpreted by __afr_dir_write_finalize(). Also removing the function afr_has_arbiter_fop_cbk_quorum() which might consider a successful reply form a single brick as quorum success in some cases, whereas we always need fop to be successful on quorum number of bricks in arbiter configuration. Change-Id: I106e267f8b9451f681022f1cccb410d9bc824c08 Fixes: #1254 Signed-off-by: karthik-us <ksubrahm@redhat.com> (cherry picked from commit fa63b45ca5edf172b1b89b28b5db3c5129cc57b6)
In case of readdir was send with an FD on which opendir was failed, this FD will be useless and we return it with error. For now, we are returning it with EINVAL without logging any message in log file. Return a correct error code and also log the message to improve thing to debug. fixes: #1220 Change-Id: Iaf035254b9c5aa52fa43ace72d328be622b06169 (cherry picked from commit af70cb5eedd80207cd184e69f2a4fb252b72d070)
The general idea of the changes is to prevent resetting event generation to zero in the inode ctx, since event gen is something that should follow 'causal order'. Change #1: For a read txn, in inode refresh cbk, if event_generation is found zero, we are failing the read fop. This is not needed because change in event gen is only a marker for the next inode refresh to happen and should not be taken into account by the current read txn. Change #2: The event gen being zero above can happen if there is a racing lookup, which resets even get (in afr_lookup_done) if there are non zero afr xattrs. The resetting is done only to trigger an inode refresh and a possible client side heal on the next lookup. That can be acheived by setting the need_refresh flag in the inode ctx. So replaced all occurences of resetting even gen to zero with a call to afr_inode_need_refresh_set(). Change #3: In both lookup and discover path, we are doing an inode refresh which is not required since all 3 essentially do the same thing- update the inode ctx with the good/bad copies from the brick replies. Inode refresh also triggers background heals, but I think it is okay to do it when we call refresh during the read and write txns and not in the lookup path. The .ts which relied on inode refresh in lookup path to trigger heals are now changed to do read txn so that inode refresh and the heal happens. Change-Id: Iebf39a9be6ffd7ffd6e4046c96b0fa78ade6c5ec Fixes: #1179 Signed-off-by: Ravishankar N <ravishankar@redhat.com> Reported-by: Erik Jacobson <erik.jacobson at hpe.com> (cherry picked from commit f0fcd909ad4535b60c9208d4804ebe6afe421a09)
This patch is removing some of the "tier" code in dht xlator, as it is no longer being used. Not all of the not-needed code is removed at once, so reviewing is easier. Follow up patches removing additional unused code will follow. This is based in the work done in https://review.gluster.org/#/c/glusterfs/+/23935/ Change-Id: I3cb6a0c5d8f14afcd87cf021ef8f74b91c0f908a updates: #1097 Signed-off-by: Barak Sason Rofman <bsaonro@redhat.com>
When bringing back a downed brick and performing lookup from the client side, the permission on said brick aren't updated on the first lookup, but only on the second. This patch modifies permission update logic so the first lookup will trigger a permission update on the downed brick. LIMITATIONS OF THE PATCH: As the choice of source depends on whether the directory has layout or not. Even the directories on the newly added brick will have layout xattr[zeroed], but the same is not true for a root directory. Hence, in case in the entire cluster only the newly added bricks are up [and others are down], then any change in permission during this time will be overwritten by the older permissions when the cluster is restarted. fixes: #999 Change-Id: Ieb70246d41e59f9cae9f70bc203627a433dfbd33 Signed-off-by: Barak Sason Rofman <bsasonro@redhat.com>
Support for gluster volume heal <volname> info healed/heal-failed was removed by commit bb02cfb56ae08f56df4452c2b948fa962ae1212b in release-3.6. cli parser will display the usage message in all the supported versions whenever these clis are run, leading to some dead code in the latest branches. Since support for these clis were removed long back, this should not give any backward compatibility issues as well. Hence removing the dead code from the code base which will lead to better code coverage by the regression runs as well. Updates: #1052 Change-Id: I0c2b061469caf233c06d9699b0d159ce48e240b9 Signed-off-by: karthik-us <ksubrahm@redhat.com>
...if pending xattrs are zero for all children. Problem: If there are no pending xattrs and a metadata heal needs to be performed, it can be possible that we end up with xattrs inadvertendly deleted from all bricks, as explained in the BZ. Fix: After picking one among the sources as the good copy, mark pending xattrs on all sources to blame the sinks. Now even if this metadata heal fails midway, a subsequent heal will still choose one of the valid sources that it picked previously. Fixes: #1067 Change-Id: If1b050b70b0ad911e162c04db4d89b263e2b8d7b Signed-off-by: Ravishankar N <ravishankar@redhat.com>
Currently even though gf_defrag_fix_layout fails with ENOENT or ESTALE, a subsequent call is made to gf_defrag_process_dir leading to rebalance failure. fixes: #1102 Change-Id: Ib0c309fd78e89a000fed3feb4bbe2c5b48e61478 Signed-off-by: Susant Palai <spalai@redhat.com>