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* cluster/afr: Don't start heal when lookup succeeds on < 2 childrenPranith Kumar K2014-09-231-1/+1
| | | | | | | | | | | | | | | | | | | | | | Backport of http://review.gluster.org/8698 Problem: When self-heal code doesn't see at least 2 successes on looking up children, then self-heal can't be done. What is happening now is if all the lookups fail then the pending changelog is all zeros in xattrs so all the children are becoming sources and leading to crashes when the code paths further assume that some data structures are populated properly Fix: Don't proceed with self-heals when < 2 children succeed lookups. BUG: 1145726 Change-Id: I65465843f0e554c8ccdd8fa930ab42ac123ec023 Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/8824 Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* cluster/afr : Mark pending changelog xattrs for new creationsAnuradha2014-09-181-14/+25
| | | | | | | | | | | | | | | | | Backport of: http://review.gluster.org/8555 Based on type of file, set appropriate pending changelogs for new entries. Change-Id: Icf9af866fe9a9e511210e8ad097e968e2307d8ee BUG: 1141787 Reviewed-on: http://review.gluster.org/8555 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com> Tested-by: Pranith Kumar Karampuri <pkarampu@redhat.com> Signed-off-by: Anuradha <atalur@redhat.com> Reviewed-on: http://review.gluster.org/8748 Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* cluster/afr: Propagate EIO on inode's type mismatchKrutika Dhananjay2014-09-161-83/+283
| | | | | | | | | | | | | | | | Backport of: http://review.gluster.org/8574, and http://review.gluster.org/8586 Original author of the test script: Pranith Kumar K <pkarampu@redhat.com> Change-Id: I0c32bdd8e666f8175c0a8fbf940934e6ce469931 BUG: 1136830 Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com> Reviewed-on: http://review.gluster.org/8706 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* cluster/afr: Fix dict_t leaksKrutika Dhananjay2014-09-161-11/+19
| | | | | | | | | | | | | | | Backport of: http://review.gluster.org/#/c/8557/ dict_t objects that are ref'd in alloca'd "replies" in afr_replies_copy() are not unref'd before "replies" go out of scope. Change-Id: I9bb45bc673ec13292ac96dda060aceb48739ebe8 BUG: 1136831 Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com> Reviewed-on: http://review.gluster.org/8704 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* cluster/afr: Fix all locked_on bricks are sinks check in self-healsPranith Kumar K2014-09-121-19/+16
| | | | | | | | | | | | | | | | | | | | | | | Backport of http://review.gluster.org/8456 Problem: Counts may give wrong results when the number of bricks is > 2. If the locks are acquired on one source and sink, but the source accuses even the down sink then there will be 2 sinks and lock is acquired on 2 bricks so even when there is a clear source and sink **_finalize_source functions think the file/directory is in split-brain. Fix: Check that all the bricks which are locked are sinks. BUG: 1136829 Change-Id: I56a8f9ff261bdeec8c441237c485036141b6f00d Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/8593 Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Ravishankar N <ravishankar@redhat.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* cluster/afr: Perform gfid heal inside locks.Pranith Kumar K2014-09-121-21/+45
| | | | | | | | | | | | | | | | | | | | | Backport of http://review.gluster.org/8512 Problem: Allowing lookup with 'gfid-req' will lead to assigning gfid at posix layer. When two mounts perform lookup in parallel that can lead to both bricks getting different gfids leading to gfid-mismatch/EIO for the lookup. Fix: Perform gfid heal inside lock. BUG: 1136823 Change-Id: I1059fcd38338348b7e96a0bd4c35b0f49bf77aec Signed-off-by: Pranith Kumar K <pkarampu@redhat.com> Reviewed-on: http://review.gluster.org/8589 Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Ravishankar N <ravishankar@redhat.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
* cluster/afr: move messages to new logging frameworkRavishankar N2014-05-171-1/+2
| | | | | | | | | | | | | | Change important (from a diagnostics point of view) log messages to use the gf_msg() framework. Change-Id: I0a58184bbb78989db149e67f07c140a21c781bc2 BUG: 1075611 Signed-off-by: Ravishankar N <ravishankar@redhat.com> Reviewed-on: http://review.gluster.org/7784 Reviewed-by: Krutika Dhananjay <kdhananj@redhat.com> Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com> Tested-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
* cluster/afr: refactorAnand Avati2014-03-221-0/+457
- Remove client side self-healing completely (opendir, openfd, lookup) - Re-work readdir-failover to work reliably in case of NFS - Remove unused/dead lock recovery code - Consistently use xdata in both calls and callbacks in all FOPs - Per-inode event generation, used to force inode ctx refresh - Implement dirty flag support (in place of pending counts) - Eliminate inode ctx structure, use read subvol bits + event_generation - Implement inode ctx refreshing based on event generation - Provide backward compatibility in transactions - remove unused variables and functions - make code more consistent in style and pattern - regularize and clean up inode-write transaction code - regularize and clean up dir-write transaction code - regularize and clean up common FOPs - reorganize transaction framework code - skip setting xattrs in pending dict if nothing is pending - re-write self-healing code using syncops - re-write simpler self-heal-daemon Change-Id: I1e4080c9796c8a2815c2dab4be3073f389d614a8 BUG: 1021686 Signed-off-by: Anand Avati <avati@redhat.com> Reviewed-on: http://review.gluster.org/6010 Tested-by: Gluster Build System <jenkins@build.gluster.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com>
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