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 <[email protected]> wrote: > Nikhil R <[email protected]> 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 <[email protected]> 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 <[email protected]> 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 <[email protected]> > 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 <[email protected]> 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 > >> >> > [email protected] > >> >> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > >> >> > >> >> > >> >> > >> >> -- > >> >> Thank you! > >> >> HuangJun > >> > >> > >> > >> -- > >> Thank you! > >> HuangJun > > > > -- > Thank you! > HuangJun >
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