Thanks for your answer!
Current status of our cluster
cluster:
id: c3d33e01-dfcd-4b39-8614-993370672504
health: HEALTH_WARN
1 failed cephadm daemon(s)
1 filesystem is degraded
services:
mon: 3 daemons, quorum cmon1,cmon2,cmon3 (age 15h)
mgr: cmon3.ixtbep(active, since 19h), standbys: cmon1.efktsr
mds: 2/2 daemons up
osd: 168 osds: 168 up (since 2d), 168 in (since 3w)
data:
volumes: 0/1 healthy, 1 recovering
pools: 4 pools, 4641 pgs
objects: 181.91M objects, 235 TiB
usage: 708 TiB used, 290 TiB / 997 TiB avail
pgs: 4630 active+clean
11 active+clean+scrubbing+deep
We are trying to do cephfs-journal-tool --rank cephfs: 0 journal inspect and the utility does nothing.
We thought that mds were blocking their journals, and turned them off. But the utility does not work, and ceph -s says that one mds is running, although we checked that we stopped all processes.
It turns out somewhere else there is a blocking of magazines.
What else can be done? Do you want to restart the monitors?
Best Regards!
Alexey Tsivinsky
e-mail:a.tsivinsky@xxxxxxxxxxxxxxxxxxxxx
От: Dhairya Parmar <dparmar@xxxxxxxxxx>
Отправлено: 25 ноября 2024 г. 12:19
Кому: Цивинский Алексей Александрович
Копия: Marc@xxxxxxxxxxxxxxxxx; ceph-users@xxxxxxx
Тема: Re: Re: CephFS 16.2.10 problem
Hi,
The log you shared indicates that MDS is waiting for the latest OSDMap epoch. The epoch number in log line 123138 is the epoch of last failure. Any MDS entering replay state needs at least this osdmap epoch to ensure the blocklist propopates. If the epoch is less than this then it just goes back to waiting.
I have limited knowledge about the OSDs but you had mentioned in your initial mail about executing some OSD commands, I'm not sure if the issue lies there. You can check and share OSD logs or maybe `ceph -s` could reveal some potential warnings.
Dhairya Parmar
Associate Software Engineer, CephFS
IBM, Inc.
On Mon, Nov 25, 2024 at 1:29 PM <Alexey.Tsivinsky@xxxxxxxxxxxxxxxxxxxx<mailto:Alexey.Tsivinsky@xxxxxxxxxxxxxxxxxxxx>> wrote:
Good afternoon
We tried to leave only one mds, stopped others, even deleted one, and turned off the requirement for stand-by mds. Nothing helped, mds remained in the status of replays.
Current situation: we now have two active mds in the status of replays, and one in stand-by.
At the same time, in the logs we see a message
mds.0.660178 waiting for osdmap 123138 (which blocklists prior instance)
At the same time, there is no activity on both mds.
The launch of the cephfs-journal-tool journal inspect utility does not produce any results - the utility worked for 12 hours and did not produce anything, we stopped it.
Maybe the problem is this blocking? How to remove it?
Best regards!
Alexey Tsivinsky
e-mail: a.tsivinsky@xxxxxxxxxxxxxxxxxxxxx<mailto:a.tsivinsky@xxxxxxxxxxxxxxxxxxxxx>
________________________________________
От: Marc <Marc@xxxxxxxxxxxxxxxxx<mailto:Marc@xxxxxxxxxxxxxxxxx>>
Отправлено: 25 ноября 2024 г. 1:47
Кому: Цивинский Алексей Александрович; ceph-users@xxxxxxx<mailto:ceph-users@xxxxxxx>
Тема: RE: CephFS 16.2.10 problem
>
> The following problem occurred.
> There is a cluster ceph 16.2.10
> The cluster was operating normally on Friday. Shut down cluster:
> -Excluded all clients
> Executed commands:
> ceph osd set noout
> ceph osd set nobackfill
> ceph osd set norecover
> ceph osd set norebalance
> ceph osd set nodown
> ceph osd set pause
> Turned off the cluster, checked server maintenance.
> Enabled cluster. He gathered himself, found all the nodes, and here the
> problem began. After all OSD went up and all pg became available, cephfs
> refused to start.
> Now mds are in the replay status, and do not go to the ready status.
> Previously, one of them was in the replay (laggy) status, but we
> executed command: ceph config set mds mds_wipe_sessions true
> After that, mds switched to the status of replays, the third in standby
> status started, and mds crashes with an error stopped.
> But cephfs is still unavailable.
> What else can we do?
> The cluster is very large, almost 200 million files.
>
I assume you tried to start just one mds and wait until it would come up as active (before starting the others)?
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