On Wed, Apr 15, 2020 at 2:33 AM Dan van der Ster <dan@xxxxxxxxxxxxxx> wrote:
>
> Hi all,
>
> Following some cephfs issues today we have a stable cluster but the
> num_strays is incorrect.
> After starting the mds, the values are reasonable, but they very soon
> underflow and start showing 18E (2^64 - a few)
>
> ---------------mds---------------- --mds_cache--- ------mds_log------
> -mds_mem- ----mds_server----- mds_ ---objecter---
> req rlat fwd inos caps exi imi |stry recy recd|subm evts segs
> repl|ino dn |hcr hcs hsr cre |sess|actv rd wr |
> 129 0 0 253k 1.9k 0 0 |246 0 0 | 5 4.0k 5 0
> |253k 254k|129 0 0 0 |119 | 3 1 2
> 8.2k 0 0 253k 1.9k 0 0 |129 0 0 |395 4.4k 7 0
> |253k 254k|8.2k 11 0 0 |119 | 0 33 517
> 9.7k 0 0 253k 1.8k 0 0 |181 0 0 |302 4.7k 7 0
> |253k 254k|9.7k 5 0 0 |119 | 1 44 297
> 10k 0 0 253k 1.8k 0 0 |217 0 0 |382 5.1k 7 0
> |253k 254k| 10k 11 0 0 |119 | 0 54 405
> 9.0k 0 0 253k 1.7k 0 0 |205 0 0 |386 5.5k 8 0
> |253k 254k|9.0k 4 0 0 |119 | 1 46 431
> 8.2k 0 0 253k 1.7k 0 0 |161 0 0 |326 5.8k 8 0
> |253k 254k|8.2k 6 0 0 |119 | 1 37 397
> 8.0k 0 0 253k 1.6k 0 0 |135 0 0 |279 6.1k 8 0
> |253k 254k|8.0k 4 0 0 |119 | 1 31 317
> 9.2k 0 0 253k 1.6k 0 0 | 18E 0 0 |153 6.2k 8 0
> |253k 254k|9.2k 6 0 0 |119 | 1 2 265
> 8.2k 0 0 253k 1.7k 0 0 | 18E 0 0 | 40 6.3k 8 0
> |253k 254k|8.2k 5 0 0 |119 | 3 3 17
>
> Is there a way to reset the num_strays to the correct number of strays ?
>
try command 'ceph daemon <mds of rank 0> scrub_path '~mdsdir' force
recursive repair'
> # for i in `seq 600 609`; do rados --cluster=dwight listomapvals -p
> cephfs_metadata ${i}.00000000 2>&1 | wc -l; done
> 95
> 220
> 91
> 173
> 567
> 1578
> 1042
> 754
> 445
> 261
>
> Cheers, Dan
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