Re: rocksdb corruption with 16.2.6

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On 20/09/2021 16:02, David Orman wrote:
Same question here, for clarity, was this on upgrading to 16.2.6 from
16.2.5? Or upgrading
from some other release?

from 16.2.5. but the OSD services were never restarted after upgrade to .5, so it could be a leftover of previous issues.

Cheers,
Andrej

On Mon, Sep 20, 2021 at 8:57 AM Sean <sean@xxxxxxxxx> wrote:
  I also ran into this with v16. In my case, trying to run a repair totally
exhausted the RAM on the box, and was unable to complete.

After removing/recreating the OSD, I did notice that it has a drastically
  smaller OMAP size than the other OSDs. I don’t know if that actually means
anything, but just wanted to mention it in case it does.

ID   CLASS  WEIGHT     REWEIGHT  SIZE     RAW USE  DATA     OMAP     META
   AVAIL    %USE   VAR   PGS  STATUS  TYPE NAME
14   hdd    10.91409   1.00000   11 TiB  3.3 TiB  3.2 TiB  4.6 MiB  5.4 GiB
  7.7 TiB  29.81  1.02   34      up    osd.14
16   hdd    10.91409   1.00000   11 TiB  3.3 TiB  3.3 TiB   20 KiB  9.4 GiB
  7.6 TiB  30.03  1.03   35      up    osd.16

~ Sean


On Sep 20, 2021 at 8:27:39 AM, Paul Mezzanini <pfmeec@xxxxxxx> wrote:

I got the exact same error on one of my OSDs when upgrading to 16.  I
used it as an exercise on trying to fix a corrupt rocksdb. A spent a few
days of poking with no success.  I got mostly tool crashes like you are
seeing with no forward progress.

I eventually just gave up, purged the OSD, did a smart long test on the
drive to be sure and then threw it back in the mix.  Been HEALTH OK for
a week now after it finished refilling the drive.


On 9/19/21 10:47 AM, Andrej Filipcic wrote:

2021-09-19T15:47:13.610+0200 7f8bc1f0e700  2 rocksdb:

[db_impl/db_impl_compaction_flush.cc:2344] Waiting after background

compaction error: Corruption: block checksum mismatch: expected

2427092066, got 4051549320  in db/251935.sst offset 18414386 size

4032, Accumulated background error counts: 1

2021-09-19T15:47:13.636+0200 7f8bbacf1700 -1 rocksdb: submit_common

error: Corruption: block checksum mismatch: expected 2427092066, got

4051549320  in db/251935.sst offset 18414386 size 4032 code = 2

Rocksdb transaction:

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--
_____________________________________________________________
   prof. dr. Andrej Filipcic,   E-mail: Andrej.Filipcic@xxxxxx
   Department of Experimental High Energy Physics - F9
   Jozef Stefan Institute, Jamova 39, P.o.Box 3000
   SI-1001 Ljubljana, Slovenia
   Tel.: +386-1-477-3674    Fax: +386-1-425-7074
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