Any help on this would be much appreciated as our prod is down since a day and each osd restart is taking 4-5 hours. in.linkedin.com/in/nikhilravindra
On Fri, Mar 29, 2019 at 7:43 PM Nikhil R <nikh.ravin...@gmail.com> wrote: > We have maxed out the files per dir. CEPH is trying to do an online split > due to which osd's are crashing. We increased the split_multiple and > merge_threshold for now and are restarting osd's. Now on these restarts the > leveldb compaction is taking a long time. Below are some of the logs. > > 2019-03-29 06:25:37.082055 7f3c6320a8c0 0 > genericfilestorebackend(/var/lib/ceph/osd/ceph-83) detect_features: FIEMAP > ioctl is disabled via 'filestore fiemap' config option > 2019-03-29 06:25:37.082064 7f3c6320a8c0 0 > genericfilestorebackend(/var/lib/ceph/osd/ceph-83) detect_features: > SEEK_DATA/SEEK_HOLE is disabled via 'filestore seek data hole' config option > 2019-03-29 06:25:37.082079 7f3c6320a8c0 0 > genericfilestorebackend(/var/lib/ceph/osd/ceph-83) detect_features: splice > is supported > 2019-03-29 06:25:37.096658 7f3c6320a8c0 0 > genericfilestorebackend(/var/lib/ceph/osd/ceph-83) detect_features: > syncfs(2) syscall fully supported (by glibc and kernel) > 2019-03-29 06:25:37.096703 7f3c6320a8c0 0 > xfsfilestorebackend(/var/lib/ceph/osd/ceph-83) detect_feature: extsize is > disabled by conf > 2019-03-29 06:25:37.295577 7f3c6320a8c0 1 leveldb: Recovering log #1151738 > 2019-03-29 06:25:37.445516 7f3c6320a8c0 1 leveldb: Delete type=0 #1151738 > 2019-03-29 06:25:37.445574 7f3c6320a8c0 1 leveldb: Delete type=3 #1151737 > 2019-03-29 07:11:50.619313 7ff6c792b700 1 leveldb: Compacting 1@3 + 12@4 > files > 2019-03-29 07:11:50.639795 7ff6c792b700 1 leveldb: Generated table > #1029200: 7805 keys, 2141956 bytes > 2019-03-29 07:11:50.649315 7ff6c792b700 1 leveldb: Generated table > #1029201: 4464 keys, 1220994 bytes > 2019-03-29 07:11:50.660485 7ff6c792b700 1 leveldb: Generated table > #1029202: 7813 keys, 2142882 bytes > 2019-03-29 07:11:50.672235 7ff6c792b700 1 leveldb: Generated table > #1029203: 6283 keys, 1712810 bytes > 2019-03-29 07:11:50.697949 7ff6c792b700 1 leveldb: Generated table > #1029204: 7805 keys, 2142841 bytes > 2019-03-29 07:11:50.714648 7ff6c792b700 1 leveldb: Generated table > #1029205: 5173 keys, 1428905 bytes > 2019-03-29 07:11:50.757146 7ff6c792b700 1 leveldb: Generated table > #1029206: 7888 keys, 2143304 bytes > 2019-03-29 07:11:50.774357 7ff6c792b700 1 leveldb: Generated table > #1029207: 5168 keys, 1425634 bytes > 2019-03-29 07:11:50.830276 7ff6c792b700 1 leveldb: Generated table > #1029208: 7821 keys, 2146114 bytes > 2019-03-29 07:11:50.849116 7ff6c792b700 1 leveldb: Generated table > #1029209: 6106 keys, 1680947 bytes > 2019-03-29 07:11:50.909866 7ff6c792b700 1 leveldb: Generated table > #1029210: 7799 keys, 2142782 bytes > 2019-03-29 07:11:50.921143 7ff6c792b700 1 leveldb: Generated table > #1029211: 5737 keys, 1574963 bytes > 2019-03-29 07:11:50.923357 7ff6c792b700 1 leveldb: Generated table > #1029212: 1149 keys, 310202 bytes > 2019-03-29 07:11:50.923388 7ff6c792b700 1 leveldb: Compacted 1@3 + 12@4 > files => 22214334 bytes > 2019-03-29 07:11:50.924224 7ff6c792b700 1 leveldb: compacted to: files[ 0 > 3 54 715 6304 24079 0 ] > 2019-03-29 07:11:50.942586 7ff6c792b700 1 leveldb: Delete type=2 #1029109 > > Is there a way i can skip this? > > in.linkedin.com/in/nikhilravindra > > > > On Fri, Mar 29, 2019 at 11:32 AM huang jun <hjwsm1...@gmail.com> wrote: > >> Nikhil R <nikh.ravin...@gmail.com> 于2019年3月29日周五 下午1:44写道： >> > >> > if i comment filestore_split_multiple = 72 filestore_merge_threshold = >> 480 in the ceph.conf wont ceph take the default value of 2 and 10 and we >> would be in more splits and crashes? >> > >> Yes, that aimed to make it clear what results in the long start time, >> leveldb compact or filestore split? >> > in.linkedin.com/in/nikhilravindra >> > >> > >> > >> > On Fri, Mar 29, 2019 at 6:55 AM huang jun <hjwsm1...@gmail.com> wrote: >> >> >> >> It seems like the split settings result the problem, >> >> what about comment out those settings then see it still used that long >> >> time to restart? >> >> As a fast search in code, these two >> >> filestore_split_multiple = 72 >> >> filestore_merge_threshold = 480 >> >> doesn't support online change. >> >> >> >> Nikhil R <nikh.ravin...@gmail.com> 于2019年3月28日周四 下午6:33写道： >> >> > >> >> > Thanks huang for the reply. >> >> > Its is the disk compaction taking more time >> >> > the disk i/o is completely utilized upto 100% >> >> > looks like both osd_compact_leveldb_on_mount = false & >> leveldb_compact_on_mount = false isnt working as expected on ceph v10.2.9 >> >> > is there a way to turn off compaction? >> >> > >> >> > Also, the reason why we are restarting osd's is due to splitting and >> we increased split multiple and merge_threshold. >> >> > Is there a way we would inject it? Is osd restarts the only solution? >> >> > >> >> > Thanks In Advance >> >> > >> >> > in.linkedin.com/in/nikhilravindra >> >> > >> >> > >> >> > >> >> > On Thu, Mar 28, 2019 at 3:58 PM huang jun <hjwsm1...@gmail.com> >> wrote: >> >> >> >> >> >> Did the time really cost on db compact operation? >> >> >> or you can turn on debug_osd=20 to see what happens, >> >> >> what about the disk util during start? >> >> >> >> >> >> Nikhil R <nikh.ravin...@gmail.com> 于2019年3月28日周四 下午4:36写道： >> >> >> > >> >> >> > CEPH osd restarts are taking too long a time >> >> >> > below is my ceph.conf >> >> >> > [osd] >> >> >> > osd_compact_leveldb_on_mount = false >> >> >> > leveldb_compact_on_mount = false >> >> >> > leveldb_cache_size=1073741824 >> >> >> > leveldb_compression = false >> >> >> > osd_mount_options_xfs = "rw,noatime,inode64,logbsize=256k" >> >> >> > osd_max_backfills = 1 >> >> >> > osd_recovery_max_active = 1 >> >> >> > osd_recovery_op_priority = 1 >> >> >> > filestore_split_multiple = 72 >> >> >> > filestore_merge_threshold = 480 >> >> >> > osd_max_scrubs = 1 >> >> >> > osd_scrub_begin_hour = 22 >> >> >> > osd_scrub_end_hour = 3 >> >> >> > osd_deep_scrub_interval = 2419200 >> >> >> > osd_scrub_sleep = 0.1 >> >> >> > >> >> >> > looks like both osd_compact_leveldb_on_mount = false & >> leveldb_compact_on_mount = false isnt working as expected on ceph v10.2.9 >> >> >> > >> >> >> > Any ideas on a fix would be appreciated asap >> >> >> > in.linkedin.com/in/nikhilravindra >> >> >> > >> >> >> > _______________________________________________ >> >> >> > ceph-users mailing list >> >> >> > ceph-users@lists.ceph.com >> >> >> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >> >> >> >> >> >> >> >> >> >> >> >> -- >> >> >> Thank you! >> >> >> HuangJun >> >> >> >> >> >> >> >> -- >> >> Thank you! >> >> HuangJun >> >> >> >> -- >> Thank you! >> HuangJun >> >
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