Re: mon scrub error (scrub mismatch)

[Eugen Block <eblock@xxxxxx>]

Hi Frank,

I had this a few years back and ended up recreating the MON with the  
scrub mismatch, so in your case it probably would be mon.0. To test if  
the problem still exists you can trigger a mon scrub manually:

ceph mon scrub

Are all MONs on rocksdb back end in this cluster? I didn't check back  
then if this was the case in our cluster, so I'm just wondering if  
that could be an explanation.

Regards,
Eugen

Zitat von Frank Schilder <frans@xxxxxx>:

> Hi all,
>
> we have these messages in our logs daily:
>
> 1/3/23 12:20:00 PM[INF]overall HEALTH_OK
> 1/3/23 12:19:46 PM[ERR] mon.2 ScrubResult(keys  
> {auth=77,config=2,health=11,logm=10} crc  
> {auth=688385498,config=4279003239,health=3522308637,logm=132403602})
> 1/3/23 12:19:46 PM[ERR] mon.0 ScrubResult(keys  
> {auth=78,config=2,health=11,logm=9} crc  
> {auth=325876668,config=4279003239,health=3522308637,logm=1083913445})
> 1/3/23 12:19:46 PM[ERR]scrub mismatch
> 1/3/23 12:19:46 PM[ERR] mon.1 ScrubResult(keys  
> {auth=77,config=2,health=11,logm=10} crc  
> {auth=688385498,config=4279003239,health=3522308637,logm=132403602})
> 1/3/23 12:19:46 PM[ERR] mon.0 ScrubResult(keys  
> {auth=78,config=2,health=11,logm=9} crc  
> {auth=325876668,config=4279003239,health=3522308637,logm=1083913445})
> 1/3/23 12:19:46 PM[ERR]scrub mismatch
> 1/3/23 12:17:04 PM[INF]Cluster is now healthy
> 1/3/23 12:17:04 PM[INF]Health check cleared: MON_CLOCK_SKEW (was:  
> clock skew detected on mon.tceph-02)
>
> Cluster is health OK:
>
> # ceph status
>   cluster:
>     id:     bf1f51f5-b381-4cf7-b3db-88d044c1960c
>     health: HEALTH_OK
>
>   services:
>     mon: 3 daemons, quorum tceph-01,tceph-02,tceph-03 (age 3M)
>     mgr: tceph-01(active, since 8w), standbys: tceph-03, tceph-02
>     mds: fs:1 {0=tceph-02=up:active} 2 up:standby
>     osd: 9 osds: 9 up (since 3M), 9 in
>
>   task status:
>
>   data:
>     pools:   4 pools, 321 pgs
>     objects: 9.94M objects, 336 GiB
>     usage:   1.6 TiB used, 830 GiB / 2.4 TiB avail
>     pgs:     321 active+clean
>
> Unfortunately, google wasn't of too much help. Is this scrub error  
> something to worry about?
>
> Thanks and best regards,
> =================
> Frank Schilder
> AIT Risø Campus
> Bygning 109, rum S14
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