[Gluster-devel] Core from gNFS process

[Vijay Bellur]

On 01/15/2016 08:38 AM, Soumya Koduri wrote:
>
>
>
> On 01/15/2016 06:52 PM, Soumya Koduri wrote:
>>
>>
>> On 01/14/2016 08:41 PM, Vijay Bellur wrote:
>>> On 01/14/2016 04:11 AM, Jiffin Tony Thottan wrote:
>>>>
>>>>
>>>> On 14/01/16 14:28, Jiffin Tony Thottan wrote:
>>>>> Hi,
>>>>>
>>>>> The core generated when encryption xlator is enabled
>>>>>
>>>>> [2016-01-14 08:13:15.740835] E
>>>>> [crypt.c:4298:master_set_master_vol_key] 0-test1-crypt: FATAL: missing
>>>>> master key
>>>>> [2016-01-14 08:13:15.740859] E [MSGID: 101019]
>>>>> [xlator.c:429:xlator_init] 0-test1-crypt: Initialization of volume
>>>>> 'test1-crypt' failed, review your volfile again
>>>>> [2016-01-14 08:13:15.740890] E [MSGID: 101066]
>>>>> [graph.c:324:glusterfs_graph_init] 0-test1-crypt: initializing
>>>>> translator failed
>>>>> [2016-01-14 08:13:15.740904] E [MSGID: 101176]
>>>>> [graph.c:670:glusterfs_graph_activate] 0-graph: init failed
>>>>> [2016-01-14 08:13:15.741676] W [glusterfsd.c:1231:cleanup_and_exit]
>>>>> (-->/usr/sbin/glusterfs(mgmt_getspec_cbk+0x307) [0x40d287]
>>>>> -->/usr/sbin/glusterfs(glusterfs_process_volfp+0x117) [0x4086c7]
>>>>> -->/usr/sbin/glusterfs(cleanup_and_exit+0x4d) [0x407e1d] ) 0-:
>>>>> received signum (0), shutting down
>>>>>
>>>>>
>>>>
>>>> Forgot to mention this last mail,  for crypt xlator needs master key
>>>> before enabling the translator which cause the issue
>>>> --
>>>
>>> Irrespective of the problem, the nfs process should not crash. Can we
>>> check why there is a memory corruption during cleanup_and_exit()?
>>>
>> That's right. This issue was reported quite a few times earlier in
>> gluster-devel and it is not specific to gluster-nfs process. As updated
>> in [1], we have raised bug1293594[2] against lib-gcc team to further
>> investigate this.

The segmentation fault in gcc is while attempting to print a backtrace 
upon glusterfs receiving a SIGSEGV. It would be good to isolate the 
reason for the initial SIGSEGV whose signal handler causes the further 
crash.

-Vijay