[Gluster-users] Client un-mounting since upgrade to 3.12.9-1 version

Tue Jun 12 12:29:08 UTC 2018

Hi Milind, Vijay

Thanks, I have some more information now as I straced glusterd on client

138544      0.000131 mprotect(0x7f2f70785000, 4096, PROT_READ|PROT_WRITE) =
0 <0.000026>
138544      0.000128 mprotect(0x7f2f70786000, 4096, PROT_READ|PROT_WRITE) =
0 <0.000027>
138544      0.000126 mprotect(0x7f2f70787000, 4096, PROT_READ|PROT_WRITE) =
0 <0.000027>
138544      0.000124 --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR,
si_addr=0x7f2f7c60ef88} ---
138544      0.000051 --- SIGSEGV {si_signo=SIGSEGV, si_code=SI_KERNEL,
si_addr=0} ---
138551      0.105048 +++ killed by SIGSEGV (core dumped) +++
138550      0.000041 +++ killed by SIGSEGV (core dumped) +++
138547      0.000008 +++ killed by SIGSEGV (core dumped) +++
138546      0.000007 +++ killed by SIGSEGV (core dumped) +++
138545      0.000007 +++ killed by SIGSEGV (core dumped) +++
138544      0.000008 +++ killed by SIGSEGV (core dumped) +++
138543      0.000007 +++ killed by SIGSEGV (core dumped) +++

As for I understand that somehow gluster is trying to access memory in
appropriate manner and kernel sends SIGSEGV

I also got the core dump. I am trying gdb first time so I am not sure
whether I am using it correctly

gdb /usr/sbin/glusterfs core.138536

It just tell me that program terminated with signal 11, segmentation fault .

The problem is not limited to one client but happening to many clients.

I will really appreciate any help as whole file system has become unusable

Thanks

Kashif

On Tue, Jun 12, 2018 at 12:26 PM, Milind Changire <mchangir at redhat.com>
wrote:

> Kashif,
> You can change the log level by:
> $ gluster volume set <vol> diagnostics.brick-log-level TRACE
> $ gluster volume set <vol> diagnostics.client-log-level TRACE
>
> and see how things fare
>
> If you want fewer logs you can change the log-level to DEBUG instead of
> TRACE.
>
>
>
> On Tue, Jun 12, 2018 at 3:37 PM, mohammad kashif <kashif.alig at gmail.com>
> wrote:
>
>> Hi Vijay
>>
>> Now it is unmounting every 30 mins !
>>
>> The server log at /var/log/glusterfs/bricks/glusteratlas-brics001-gv0.log
>> have this line only
>>
>> 2018-06-12 09:53:19.303102] I [MSGID: 115013]
>> [server-helpers.c:289:do_fd_cleanup] 0-atlasglust-server: fd cleanup on
>> /atlas/atlasdata/zgubic/hmumu/histograms/v14.3/Signal
>> [2018-06-12 09:53:19.306190] I [MSGID: 101055]
>> [client_t.c:443:gf_client_unref] 0-atlasglust-server: Shutting down
>> connection <server-name> -2224879-2018/06/12-09:51:01:4
>> 60889-atlasglust-client-0-0-0
>>
>> There is no other information. Is there any way to increase log verbosity?
>>
>> on the client
>>
>> 2018-06-12 09:51:01.744980] I [MSGID: 114057]
>> [client-handshake.c:1478:select_server_supported_programs]
>> 0-atlasglust-client-5: Using Program GlusterFS 3.3, Num (1298437), Version
>> (330)
>> [2018-06-12 09:51:01.746508] I [MSGID: 114046]
>> [client-handshake.c:1231:client_setvolume_cbk] 0-atlasglust-client-5:
>> Connected to atlasglust-client-5, attached to remote volume
>> '/glusteratlas/brick006/gv0'.
>> [2018-06-12 09:51:01.746543] I [MSGID: 114047]
>> [client-handshake.c:1242:client_setvolume_cbk] 0-atlasglust-client-5:
>> Server and Client lk-version numbers are not same, reopening the fds
>> [2018-06-12 09:51:01.746814] I [MSGID: 114035]
>> [client-handshake.c:202:client_set_lk_version_cbk]
>> 0-atlasglust-client-5: Server lk version = 1
>> [2018-06-12 09:51:01.748449] I [MSGID: 114057]
>> [client-handshake.c:1478:select_server_supported_programs]
>> 0-atlasglust-client-6: Using Program GlusterFS 3.3, Num (1298437), Version
>> (330)
>> [2018-06-12 09:51:01.750219] I [MSGID: 114046]
>> [client-handshake.c:1231:client_setvolume_cbk] 0-atlasglust-client-6:
>> Connected to atlasglust-client-6, attached to remote volume
>> '/glusteratlas/brick007/gv0'.
>> [2018-06-12 09:51:01.750261] I [MSGID: 114047]
>> [client-handshake.c:1242:client_setvolume_cbk] 0-atlasglust-client-6:
>> Server and Client lk-version numbers are not same, reopening the fds
>> [2018-06-12 09:51:01.750503] I [MSGID: 114035]
>> [client-handshake.c:202:client_set_lk_version_cbk]
>> 0-atlasglust-client-6: Server lk version = 1
>> [2018-06-12 09:51:01.752207] I [fuse-bridge.c:4205:fuse_init]
>> 0-glusterfs-fuse: FUSE inited with protocol versions: glusterfs 7.24 kernel
>> 7.14
>> [2018-06-12 09:51:01.752261] I [fuse-bridge.c:4835:fuse_graph_sync]
>> 0-fuse: switched to graph 0
>>
>>
>> is there a problem with server and client 1k version?
>>
>> Thanks for your help.
>>
>> Kashif
>>
>>
>>
>>
>>
>> On Mon, Jun 11, 2018 at 11:52 PM, Vijay Bellur <vbellur at redhat.com>
>> wrote:
>>
>>>
>>>
>>> On Mon, Jun 11, 2018 at 8:50 AM, mohammad kashif <kashif.alig at gmail.com>
>>> wrote:
>>>
>>>> Hi
>>>>
>>>> Since I have updated our gluster server and client to latest version
>>>> 3.12.9-1, I am having this issue of gluster getting unmounted from client
>>>> very regularly. It was not a problem before update.
>>>>
>>>> Its a distributed file system with no replication. We have seven
>>>> servers totaling around 480TB data. Its 97% full.
>>>>
>>>> I am using following config on server
>>>>
>>>>
>>>> gluster volume set atlasglust features.cache-invalidation on
>>>> gluster volume set atlasglust features.cache-invalidation-timeout 600
>>>> gluster volume set atlasglust performance.stat-prefetch on
>>>> gluster volume set atlasglust performance.cache-invalidation on
>>>> gluster volume set atlasglust performance.md-cache-timeout 600
>>>> gluster volume set atlasglust performance.parallel-readdir on
>>>> gluster volume set atlasglust performance.cache-size 1GB
>>>> gluster volume set atlasglust performance.client-io-threads on
>>>> gluster volume set atlasglust cluster.lookup-optimize on
>>>> gluster volume set atlasglust performance.stat-prefetch on
>>>> gluster volume set atlasglust client.event-threads 4
>>>> gluster volume set atlasglust server.event-threads 4
>>>>
>>>> clients are mounted with this option
>>>>
>>>> defaults,direct-io-mode=disable,attribute-timeout=600,entry-
>>>> timeout=600,negative-timeout=600,fopen-keep-cache,rw,_netdev
>>>>
>>>> I can't see anything in the log file. Can someone suggest that how to
>>>> troubleshoot this issue?
>>>>
>>>>
>>>>
>>>
>>> Can you please share the log file? Checking for messages related to
>>> disconnections/crashes in the log file would be a good way to start
>>> troubleshooting the problem.
>>>
>>> Thanks,
>>> Vijay
>>>
>>
>>
>> _______________________________________________
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>> Gluster-users at gluster.org
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>>
>
>
>
> --
> Milind
>
>
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