From the log: http://build.gluster.org:443/logs/glusterfs-logs-20140520%3a17%3a10%3a51.tgzit looks like glusterd was hung:

*Glusterd log:**
* 5305 [2014-05-20 20:08:55.040665] E [glusterd-snapshot.c:3805:glusterd_add_brick_to_snap_volume] 0-management: Unable to fetch snap device (vol1.brick_snapdevice0). Leaving empty 5306 [2014-05-20 20:08:55.649146] I [rpc-clnt.c:973:rpc_clnt_connection_init] 0-management: setting frame-timeout to 600 5307 [2014-05-20 20:08:55.663181] I [rpc-clnt.c:973:rpc_clnt_connection_init] 0-management: setting frame-timeout to 600 5308 [2014-05-20 20:16:55.541197] W [glusterfsd.c:1182:cleanup_and_exit] (--> 0-: received signum (15), shutting down

Glusterd was hung when executing the testcase ./tests/bugs/bug-1090042.t.

*Cli log:**
*72649 [2014-05-20 20:12:51.960765] T [rpc-clnt.c:418:rpc_clnt_reconnect] 0-glusterfs: attempting reconnect 72650 [2014-05-20 20:12:51.960850] T [socket.c:2689:socket_connect] (-->/build/install/lib/libglusterfs.so.0(gf_timer_proc+0x1a2) [0x7ff8b6609994] (-->/build/install/lib/libgfrpc.so.0(rpc_clnt_reconnect+0x137) [0x7ff8b5d3305b] (- ->/build/install/lib/libgfrpc.so.0(rpc_transport_connect+0x74) [0x7ff8b5d30071]))) 0-glusterfs: connect () called on transport already connected 72651 [2014-05-20 20:12:52.960943] T [rpc-clnt.c:418:rpc_clnt_reconnect] 0-glusterfs: attempting reconnect 72652 [2014-05-20 20:12:52.960999] T [socket.c:2697:socket_connect] 0-glusterfs: connecting 0x1e0fcc0, state=0 gen=0 sock=-1 72653 [2014-05-20 20:12:52.961038] W [dict.c:1059:data_to_str] (-->/build/install/lib/glusterfs/3.5qa2/rpc-transport/socket.so(+0xb5f3) [0x7ff8ad9e95f3] (-->/build/install/lib/glusterfs/3.5qa2/rpc-transport/socket.so(socket_clien t_get_remote_sockaddr+0x10a) [0x7ff8ad9ed568] (-->/build/install/lib/glusterfs/3.5qa2/rpc-transport/socket.so(client_fill_address_family+0xf1) [0x7ff8ad9ec7d0]))) 0-dict: data is NULL 72654 [2014-05-20 20:12:52.961070] W [dict.c:1059:data_to_str] (-->/build/install/lib/glusterfs/3.5qa2/rpc-transport/socket.so(+0xb5f3) [0x7ff8ad9e95f3] (-->/build/install/lib/glusterfs/3.5qa2/rpc-transport/socket.so(socket_clien t_get_remote_sockaddr+0x10a) [0x7ff8ad9ed568] (-->/build/install/lib/glusterfs/3.5qa2/rpc-transport/socket.so(client_fill_address_family+0x100) [0x7ff8ad9ec7df]))) 0-dict: data is NULL 72655 [2014-05-20 20:12:52.961079] E [name.c:140:client_fill_address_family] 0-glusterfs: transport.address-family not specified. Could not guess default value from (remote-host:(null) or transport.unix.connect-path:(null)) optio ns 72656 [2014-05-20 20:12:54.961273] T [rpc-clnt.c:418:rpc_clnt_reconnect] 0-glusterfs: attempting reconnect 72657 [2014-05-20 20:12:54.961404] T [socket.c:2689:socket_connect] (-->/build/install/lib/libglusterfs.so.0(gf_timer_proc+0x1a2) [0x7ff8b6609994] (-->/build/install/lib/libgfrpc.so.0(rpc_clnt_reconnect+0x137) [0x7ff8b5d3305b] (- ->/build/install/lib/libgfrpc.so.0(rpc_transport_connect+0x74) [0x7ff8b5d30071]))) 0-glusterfs: connect () called on transport already connected 72658 [2014-05-20 20:12:55.120645] D [cli-cmd.c:384:cli_cmd_submit] 0-cli: Returning 110 72659 [2014-05-20 20:12:55.120723] D [cli-rpc-ops.c:8716:gf_cli_snapshot] 0-cli: Returning 110


Now we need to find why glusterd was hung.


Thanks,
Vijay



On Wednesday 21 May 2014 06:46 AM, Pranith Kumar Karampuri wrote:
Hey,
     Seems like even after this fix is merged, the regression tests are failing 
for the same script. You can check the logs at 
http://build.gluster.org:443/logs/glusterfs-logs-20140520%3a14%3a06%3a46.tgz

Relevant logs:
[2014-05-20 20:17:07.026045]  : volume create patchy 
build.gluster.org:/d/backends/patchy1 build.gluster.org:/d/backends/patchy2 : 
SUCCESS
[2014-05-20 20:17:08.030673]  : volume start patchy : SUCCESS
[2014-05-20 20:17:08.279148]  : volume barrier patchy enable : SUCCESS
[2014-05-20 20:17:08.476785]  : volume barrier patchy enable : FAILED : Failed 
to reconfigure barrier.
[2014-05-20 20:17:08.727429]  : volume barrier patchy disable : SUCCESS
[2014-05-20 20:17:08.926995]  : volume barrier patchy disable : FAILED : Failed 
to reconfigure barrier.

Pranith

----- Original Message -----
From: "Pranith Kumar Karampuri" <pkara...@redhat.com>
To: "Gluster Devel" <gluster-devel@gluster.org>
Cc: "Joseph Fernandes" <josfe...@redhat.com>, "Vijaikumar M" 
<vmall...@redhat.com>
Sent: Tuesday, May 20, 2014 3:41:11 PM
Subject: Re: Spurious failures because of nfs and snapshots

hi,
     Please resubmit the patches on top of http://review.gluster.com/#/c/7753
     to prevent frequent regression failures.

Pranith
----- Original Message -----
From: "Vijaikumar M" <vmall...@redhat.com>
To: "Pranith Kumar Karampuri" <pkara...@redhat.com>
Cc: "Joseph Fernandes" <josfe...@redhat.com>, "Gluster Devel"
<gluster-devel@gluster.org>
Sent: Monday, May 19, 2014 2:40:47 PM
Subject: Re: Spurious failures because of nfs and snapshots

Brick disconnected with ping-time out:

Here is the log message
[2014-05-19 04:29:38.133266] I [MSGID: 100030] [glusterfsd.c:1998:main]
0-/build/install/sbin/glusterfsd: Started running /build/install/sbi
n/glusterfsd version 3.5qa2 (args: /build/install/sbin/glusterfsd -s
build.gluster.org --volfile-id /snaps/patchy_snap1/3f2ae3fbb4a74587b1a9
1013f07d327f.build.gluster.org.var-run-gluster-snaps-3f2ae3fbb4a74587b1a91013f07d327f-brick3
-p /var/lib/glusterd/snaps/patchy_snap1/3f2ae3f
bb4a74587b1a91013f07d327f/run/build.gluster.org-var-run-gluster-snaps-3f2ae3fbb4a74587b1a91013f07d327f-brick3.pid
-S /var/run/51fe50a6faf0aa    e006c815da946caf3a.socket --brick-name
/var/run/gluster/snaps/3f2ae3fbb4a74587b1a91013f07d327f/brick3 -l
/build/install/var/log/glusterfs/br
icks/var-run-gluster-snaps-3f2ae3fbb4a74587b1a91013f07d327f-brick3.log
--xlator-option *-posix.glusterd-uuid=494ef3cd-15fc-4c8c-8751-2d441ba
7b4b0 --brick-port 49164 --xlator-option
3f2ae3fbb4a74587b1a91013f07d327f-server.listen-port=49164)
    2 [2014-05-19 04:29:38.141118] I
[rpc-clnt.c:988:rpc_clnt_connection_init] 0-glusterfs: defaulting
ping-timeout to 30secs
    3 [2014-05-19 04:30:09.139521] C
[rpc-clnt-ping.c:105:rpc_clnt_ping_timer_expired] 0-glusterfs: server
10.3.129.13:24007 has not responded in the last 30 seconds, disconnecting.



Patch 'http://review.gluster.org/#/c/7753/' will fix the problem, where
ping-timer will be disabled by default for all the rpc connection except
for glusterd-glusterd (set to 30sec) and client-glusterd (set to 42sec).


Thanks,
Vijay


On Monday 19 May 2014 11:56 AM, Pranith Kumar Karampuri wrote:
The latest build failure also has the same issue:
Download it from here:
http://build.gluster.org:443/logs/glusterfs-logs-20140518%3a22%3a27%3a31.tgz

Pranith

----- Original Message -----
From: "Vijaikumar M" <vmall...@redhat.com>
To: "Joseph Fernandes" <josfe...@redhat.com>
Cc: "Pranith Kumar Karampuri" <pkara...@redhat.com>, "Gluster Devel"
<gluster-devel@gluster.org>
Sent: Monday, 19 May, 2014 11:41:28 AM
Subject: Re: Spurious failures because of nfs and snapshots

Hi Joseph,

In the log mentioned below, it say ping-time is set to default value
30sec.I think issue is different.
Can you please point me to the logs where you where able to re-create
the problem.

Thanks,
Vijay



On Monday 19 May 2014 09:39 AM, Pranith Kumar Karampuri wrote:
hi Vijai, Joseph,
       In 2 of the last 3 build failures,
       http://build.gluster.org/job/regression/4479/console,
       http://build.gluster.org/job/regression/4478/console this
       test(tests/bugs/bug-1090042.t) failed. Do you guys think it is
       better
       to revert this test until the fix is available? Please send a
       patch
       to revert the test case if you guys feel so. You can re-submit it
       along with the fix to the bug mentioned by Joseph.

Pranith.

----- Original Message -----
From: "Joseph Fernandes" <josfe...@redhat.com>
To: "Pranith Kumar Karampuri" <pkara...@redhat.com>
Cc: "Gluster Devel" <gluster-devel@gluster.org>
Sent: Friday, 16 May, 2014 5:13:57 PM
Subject: Re: Spurious failures because of nfs and snapshots


Hi All,

tests/bugs/bug-1090042.t :

I was able to reproduce the issue i.e when this test is done in a loop

for i in {1..135} ; do  ./bugs/bug-1090042.t

When checked the logs
[2014-05-16 10:49:49.003978] I
[rpc-clnt.c:973:rpc_clnt_connection_init]
0-management: setting frame-timeout to 600
[2014-05-16 10:49:49.004035] I
[rpc-clnt.c:988:rpc_clnt_connection_init]
0-management: defaulting ping-timeout to 30secs
[2014-05-16 10:49:49.004303] I
[rpc-clnt.c:973:rpc_clnt_connection_init]
0-management: setting frame-timeout to 600
[2014-05-16 10:49:49.004340] I
[rpc-clnt.c:988:rpc_clnt_connection_init]
0-management: defaulting ping-timeout to 30secs

The issue is with ping-timeout and is tracked under the bug

https://bugzilla.redhat.com/show_bug.cgi?id=1096729


The workaround is mentioned in
https://bugzilla.redhat.com/show_bug.cgi?id=1096729#c8


Regards,
Joe

----- Original Message -----
From: "Pranith Kumar Karampuri" <pkara...@redhat.com>
To: "Gluster Devel" <gluster-devel@gluster.org>
Cc: "Joseph Fernandes" <josfe...@redhat.com>
Sent: Friday, May 16, 2014 6:19:54 AM
Subject: Spurious failures because of nfs and snapshots

hi,
       In the latest build I fired for review.gluster.com/7766
       (http://build.gluster.org/job/regression/4443/console) failed
       because
       of
       spurious failure. The script doesn't wait for nfs export to be
       available. I fixed that, but interestingly I found quite a few
       scripts
       with same problem. Some of the scripts are relying on 'sleep 5'
       which
       also could lead to spurious failures if the export is not
       available
       in 5
       seconds. We found that waiting for 20 seconds is better, but
       'sleep
       20'
       would unnecessarily delay the build execution. So if you guys
       are
       going
       to write any scripts which has to do nfs mounts, please do it
       the
       following way:

EXPECT_WITHIN 20 "1" is_nfs_export_available;
TEST mount -t nfs -o vers=3 $H0:/$V0 $N0;

Please review http://review.gluster.com/7773 :-)

I saw one more spurious failure in a snapshot related script
tests/bugs/bug-1090042.t on the next build fired by Niels.
Joesph (CCed) is debugging it. He agreed to reply what he finds and
share
it
with us so that we won't introduce similar bugs in future.

I encourage you guys to share what you fix to prevent spurious
failures
in
future.

Thanks
Pranith



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