Re: cephfs kernel client hangs

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kernel client

Yan, Zheng <ukernel@xxxxxxxxx> 于2018年8月14日周二 下午3:13写道:
On Mon, Aug 13, 2018 at 9:55 PM Zhenshi Zhou <deaderzzs@xxxxxxxxx> wrote:
>
> Hi Burkhard,
> I'm sure the user has permission to read and write. Besides, we're not using EC data pools.
> Now the situation is that any openration to a specific file, the command will hang.
> Operations to any other files won't hang.
>

can ceph-fuse client read the specific file ?

> Burkhard Linke <Burkhard.Linke@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> 于2018年8月13日周一 下午9:42写道:
>>
>> Hi,
>>
>>
>> On 08/13/2018 03:22 PM, Zhenshi Zhou wrote:
>> > Hi,
>> > Finally, I got a running server with files /sys/kernel/debug/ceph/xxx/
>> >
>> > [root@docker27 525c4413-7a08-40ca-9a98-0a6df009025b.client213522]# cat mdsc
>> > [root@docker27 525c4413-7a08-40ca-9a98-0a6df009025b.client213522]# cat monc
>> > have monmap 2 want 3+
>> > have osdmap 4545 want 4546
>> > have fsmap.user 0
>> > have mdsmap 335 want 336+
>> > fs_cluster_id -1
>> > [root@docker27 525c4413-7a08-40ca-9a98-0a6df009025b.client213522]# cat osdc
>> > REQUESTS 6 homeless 0
>> > 82580   osd10   1.7f9ddac7      [10,13]/10      [10,13]/10
>> > 10000053a04.00000000    0x400024        1       write
>> > 81019   osd11   1.184ed679      [11,7]/11       [11,7]/11
>> >   1000005397b.00000000    0x400024        1       write
>> > 81012   osd12   1.cd98ed57      [12,9]/12       [12,9]/12
>> >   10000053971.00000000    0x400024        1       write,startsync
>> > 82589   osd12   1.7cd5405a      [12,8]/12       [12,8]/12
>> >   10000053a13.00000000    0x400024        1       write,startsync
>> > 80972   osd13   1.91886156      [13,4]/13       [13,4]/13
>> >   10000053939.00000000    0x400024        1       write
>> > 81035   osd13   1.ac5ccb56      [13,4]/13       [13,4]/13
>> >   10000053997.00000000    0x400024        1       write
>> >
>> > The cluster claims nothing, and shows HEALTH_OK still.
>> > What I did is just vim a file storing on cephfs, and then it hung there.
>> > And I got a process with 'D' stat.
>> > By the way, the whole mount directory is still in use and with no error.
>>
>> So there are no pending mds requests, mon seems to be ok, too.
>>
>> But the osd requests seems to be stuck. Are you sure the ceph user used
>> for the mount point is allowed to write to the cephfs data pools? Are
>> you using additional EC data pools?
>>
>> Regards,
>> Burkhard
>> _______________________________________________
>> ceph-users mailing list
>> ceph-users@xxxxxxxxxxxxxx
>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>
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