Bug 1177339

+++ This bug was initially created as a clone of Bug #1168189 +++

Description of problem:
entry self-heal in 3.6 and above, takes full lock on the directory only for the duration of figuring out the xattrs of the directories where as 3.5 takes locks through out the entry-self-heal. If the cluster is heterogeneous then there is a chance that 3.6 self-heal is triggered and then 3.5 self-heal will also triggered and both the self-heal daemons of 3.5 and 3.6 do self-heal.

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1. Create a replicate volume consisting 2 bricks on machines m1, m2 on version 3.5
2. Create a directory 'd' inside the mount on m2 and cd into it
3. While a brick was down on m2 create lot of files in this directory 'd'. I created 10000 files.
4. upgrade m1 to 3.6
5. Bring the bricks up and initiate self-heal of directories.
6. 3.6 self-heal daemon will start healing
7. access 'd' on mount in m2 then that will also trigger heal sometimes.

Actual results:
Self-heal is happening on directory 'd' by both self-heal daemons in 3.5, 3.6

Expected results:


Additional info:

--- Additional comment from Pranith Kumar K on 2014-11-26 06:26:03 EST ---

With the patch:
while 3.5 heal is in progress 3.6 heal was prevented:
[root@localhost ~]# grep d0555511ee7f0000 /var/log/glusterfs/bricks/brick.log | grep ENTRYLK
[2014-11-26 11:01:51.165591] I [entrylk.c:244:entrylk_trace_in] 0-r2-locks: [REQUEST] Locker = {Pid=18446744073709551610, lk-owner=d0555511ee7f0000, Client=0x7f51d6d21ac0, Frame=19} Lockee = {gfid=26625058-b5f2-4561-97da-ec9e7268119e, fd=(nil), path=/d} Lock = {lock=ENTRYLK, cmd=LOCK_NB, type=WRITE, basename=(null), domain: r2-replicate-0:self-heal}
[2014-11-26 11:01:51.165633] I [entrylk.c:271:entrylk_trace_out] 0-r2-locks: [GRANTED] Locker = {Pid=18446744073709551610, lk-owner=d0555511ee7f0000, Client=0x7f51d6d21ac0, Frame=19} Lockee = {gfid=26625058-b5f2-4561-97da-ec9e7268119e, fd=(nil), path=/d} Lock = {lock=ENTRYLK, cmd=LOCK_NB, type=WRITE, basename=(null), domain: r2-replicate-0:self-heal}
[2014-11-26 11:01:51.173176] I [entrylk.c:244:entrylk_trace_in] 0-r2-locks: [REQUEST] Locker = {Pid=18446744073709551610, lk-owner=d0555511ee7f0000, Client=0x7f51d6d21ac0, Frame=21} Lockee = {gfid=26625058-b5f2-4561-97da-ec9e7268119e, fd=(nil), path=/d} Lock = {lock=ENTRYLK, cmd=LOCK_NB, type=WRITE, basename=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa}
[2014-11-26 11:01:51.173242] I [entrylk.c:271:entrylk_trace_out] 0-r2-locks: [TRYAGAIN] Locker = {Pid=18446744073709551610, lk-owner=d0555511ee7f0000, Client=0x7f51d6d21ac0, Frame=21} Lockee = {gfid=26625058-b5f2-4561-97da-ec9e7268119e, fd=(nil), path=/d} Lock = {lock=ENTRYLK, cmd=LOCK_NB, type=WRITE, basename=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa}
[2014-11-26 11:01:51.184939] I [entrylk.c:244:entrylk_trace_in] 0-r2-locks: [REQUEST] Locker = {Pid=18446744073709551610, lk-owner=d0555511ee7f0000, Client=0x7f51d6d21ac0, Frame=23} Lockee = {gfid=26625058-b5f2-4561-97da-ec9e7268119e, fd=(nil), path=/d} Lock = {lock=ENTRYLK, cmd=UNLOCK, type=WRITE, basename=(null), domain: r2-replicate-0:self-heal}
[2014-11-26 11:01:51.184989] I [entrylk.c:271:entrylk_trace_out] 0-r2-locks: [GRANTED] Locker = {Pid=18446744073709551610, lk-owner=d0555511ee7f0000, Client=0x7f51d6d21ac0, Frame=23} Lockee = {gfid=26625058-b5f2-4561-97da-ec9e7268119e, fd=(nil), path=/d} Lock = {lock=ENTRYLK, cmd=UNLOCK, type=WRITE, basename=(null), domain: r2-replicate-0:self-heal}

--- Additional comment from Pranith Kumar K on 2014-12-02 01:37:54 EST ---

In this test case, 3.6 does healing where as 3.5 heal will not get locks:

[root@localhost ~]# egrep "(aaaaaaaaaaa|TRYAGAIN)" /var/log/glusterfs/bricks/brick.log | grep ENTRY
[2014-12-02 06:14:54.502242] I [entrylk.c:244:entrylk_trace_in] 0-r2-locks: [REQUEST] Locker = {Pid=18446744073709551610, lk-owner=a41e327d2e7f0000, Client=0x7f831e1a4ac0, Frame=1064} Lockee = {gfid=fab813d6-2ef2-4885-a293-91476cc5d167, fd=(nil), path=<gfid:fab813d6-2ef2-4885-a293-91476cc5d167>} Lock = {lock=ENTRYLK, cmd=LOCK_NB, type=WRITE, basename=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa}
[2014-12-02 06:14:54.502261] I [entrylk.c:271:entrylk_trace_out] 0-r2-locks: [GRANTED] Locker = {Pid=18446744073709551610, lk-owner=a41e327d2e7f0000, Client=0x7f831e1a4ac0, Frame=1064} Lockee = {gfid=fab813d6-2ef2-4885-a293-91476cc5d167, fd=(nil), path=<gfid:fab813d6-2ef2-4885-a293-91476cc5d167>} Lock = {lock=ENTRYLK, cmd=LOCK_NB, type=WRITE, basename=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa}
[2014-12-02 06:15:01.491651] I [entrylk.c:271:entrylk_trace_out] 0-r2-locks: [TRYAGAIN] Locker = {Pid=18446744073709551615, lk-owner=08b4e7739a7f0000, Client=0x7f831e1e7880, Frame=1621} Lockee = {gfid=fab813d6-2ef2-4885-a293-91476cc5d167, fd=(nil), path=<gfid:fab813d6-2ef2-4885-a293-91476cc5d167>} Lock = {lock=ENTRYLK, cmd=LOCK_NB, type=WRITE, basename=(null), domain: r2-replicate-0}
[2014-12-02 06:18:36.741434] I [entrylk.c:244:entrylk_trace_in] 0-r2-locks: [REQUEST] Locker = {Pid=18446744073709551610, lk-owner=a41e327d2e7f0000, Client=0x7f831e1a4ac0, Frame=91112} Lockee = {gfid=fab813d6-2ef2-4885-a293-91476cc5d167, fd=(nil), path=<gfid:fab813d6-2ef2-4885-a293-91476cc5d167>} Lock = {lock=ENTRYLK, cmd=UNLOCK, type=WRITE, basename=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa}
[2014-12-02 06:18:36.741604] I [entrylk.c:271:entrylk_trace_out] 0-r2-locks: [GRANTED] Locker = {Pid=18446744073709551610, lk-owner=a41e327d2e7f0000, Client=0x7f831e1a4ac0, Frame=91112} Lockee = {gfid=fab813d6-2ef2-4885-a293-91476cc5d167, fd=(nil), path=<gfid:fab813d6-2ef2-4885-a293-91476cc5d167>} Lock = {lock=ENTRYLK, cmd=UNLOCK, type=WRITE, basename=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa}

--- Additional comment from Anand Avati on 2014-12-02 01:44:27 EST ---

REVIEW: http://review.gluster.org/9125 (features/locks: Add lk-owner checks in entrylk) posted (#2) for review on master by Pranith Kumar Karampuri (pkarampu)

--- Additional comment from Anand Avati on 2014-12-02 01:44:32 EST ---

REVIEW: http://review.gluster.org/9227 (cluster/afr: Make entry-self-heal in afr-v2 compatible with afr-v1) posted (#1) for review on master by Pranith Kumar Karampuri (pkarampu)

--- Additional comment from Anand Avati on 2014-12-26 04:45:53 EST ---

REVIEW: http://review.gluster.org/9227 (cluster/afr: Make entry-self-heal in afr-v2 compatible with afr-v1) posted (#2) for review on master by Pranith Kumar Karampuri (pkarampu)

--- Additional comment from Anand Avati on 2014-12-26 04:46:01 EST ---

REVIEW: http://review.gluster.org/9125 (features/locks: Add lk-owner checks in entrylk) posted (#3) for review on master by Pranith Kumar Karampuri (pkarampu)

--- Additional comment from Anand Avati on 2014-12-26 04:46:04 EST ---

REVIEW: http://review.gluster.org/9351 (mgmt/glusterd: Add option to enable lock trace) posted (#1) for review on master by Pranith Kumar Karampuri (pkarampu)