On Thu, Apr 16, 2020 at 12:15 AM Dan van der Ster <dan@vanderster.com> wrote:
On Wed, Apr 15, 2020 at 5:13 PM Yan, Zheng <ukernel@gmail.com> wrote:
On Wed, Apr 15, 2020 at 2:33 AM Dan van der Ster <dan@vanderster.com> 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'
thanks for the reply. Here's the ceph log from this repair:
The active mds (single active only) still showed 18E, so I failed over to a standby and it seems a bit better, but still occasionally dropping below zero to 18E. I ran scrub_path a few times and it finds errors each time...
do you mean scrub fixed the error, but the stat error keeps happening? which version of mds do you use?
-- Dan
# 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 _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-leave@ceph.io