14 Jul
2020
14 Jul
'20
4:17 p.m.
Thanks for this info -- adding it to our list of reasons never to use
FileStore again.
In your case, are you able to migrate?
On Tue, Jul 14, 2020 at 3:13 PM Eric Smith <Eric.Smith(a)vecima.com> wrote:
>
> FWIW Bluestore is not affected by this problem!
>
> -----Original Message-----
> From: Eric Smith <Eric.Smith(a)vecima.com>
> Sent: Saturday, July 11, 2020 6:40 AM
> To: ceph-users(a)ceph.io
> Subject: [ceph-users] Re: Luminous 12.2.12 - filestore OSDs take an hour to boot
>
> It does appear that long file names and filestore seem to be a real problem. We have
a cluster where 99% of the objects have names longer than N (220+?) characters such that
it truncates the file name (as seen below with "_<sha-sum>_0_long") and
stores the full object name in xattrs for the object. During boot the OSD goes out to
lunch for increasing amounts of time based on the number of objects on disk you have that
meet this criteria (With 2.4 million ish objects that meet this criteria, the OSD takes
over an hour to boot). I plan on testing this same scenario with BlueStore to see if
it's also susceptible to these boot / read issues.
>
> Eric
>
> -----Original Message-----
> From: Eric Smith <Eric.Smith(a)vecima.com>
> Sent: Friday, July 10, 2020 1:46 PM
> To: ceph-users(a)ceph.io
> Subject: [ceph-users] Re: Luminous 12.2.12 - filestore OSDs take an hour to boot
>
> For what it's worth - all of our objects are generating LONG named object files
like so...
>
>
\uABCD\ucontent.\srecording\swzdchd\u\utnda-trg-1008007-wzdchd-216203706303281120-230932949-1593482400-159348660000000001\swzdchd\u\utpc2-tp1-1008007-wzdchd-216203706303281120-230932949-1593482400-159348660000000001\u\uwzdchd3._0bfd7c716b839cb7b3ad_0_long
>
> Does this matter? AFAICT it sees this as a long file name and has to lookup the
object name in the xattrs ? Is that bad?
>
> -----Original Message-----
> From: Eric Smith <Eric.Smith(a)vecima.com>
> Sent: Friday, July 10, 2020 6:59 AM
> To: ceph-users(a)ceph.io
> Subject: [ceph-users] Luminous 12.2.12 - filestore OSDs take an hour to boot
>
> I have a cluster running Luminous 12.2.12 with Filestore and it takes my OSDs
somewhere around an hour to start (They do start successfully - eventually). I have the
following log entries that seem to show the OSD process attempting to descend into the PG
directory on disk and create an object list of some sort:
>
> 2020-07-09 18:29:28.017207 7f3b680afd80 20 osd.1 137390 clearing temps in
8.14ads3_head pgid 8.14ads3
> 2020-07-09 18:29:28.017211 7f3b680afd80 20 filestore(/var/lib/ceph/osd/ceph-1)
collection_list(5012): pool is 8 shard is 3 pgid 8.14ads3
> 2020-07-09 18:29:28.017213 7f3b680afd80 10 filestore(/var/lib/ceph/osd/ceph-1)
collection_list(5020): first checking temp pool
> 2020-07-09 18:29:28.017215 7f3b680afd80 20 filestore(/var/lib/ceph/osd/ceph-1)
collection_list(5012): pool is -10 shard is 3 pgid 8.14ads3
> 2020-07-09 18:29:28.017221 7f3b680afd80 20 _collection_list_partial start:GHMIN
end:GHMAX-64 ls.size 0
> 2020-07-09 18:29:28.017263 7f3b680afd80 20 filestore(/var/lib/ceph/osd/ceph-1)
objects: []
> 2020-07-09 18:29:28.017268 7f3b680afd80 10 filestore(/var/lib/ceph/osd/ceph-1)
collection_list(5028): fall through to non-temp collection, start 3#-1:00000000::::0#
> 2020-07-09 18:29:28.017272 7f3b680afd80 20 _collection_list_partial
start:3#-1:00000000::::0# end:GHMAX-64 ls.size 0
> 2020-07-09 18:29:28.038124 7f3b680afd80 20 list_by_hash_bitwise prefix D
> 2020-07-09 18:29:28.058679 7f3b680afd80 20 list_by_hash_bitwise prefix DA
> 2020-07-09 18:29:28.069432 7f3b680afd80 20 list_by_hash_bitwise prefix DA4
> 2020-07-09 18:29:29.789598 7f3b51a87700 20 filestore(/var/lib/ceph/osd/ceph-1)
sync_entry(4010): woke after 5.000074
> 2020-07-09 18:29:29.789634 7f3b51a87700 10 journal commit_start max_applied_seq
53085082, open_ops 0
> 2020-07-09 18:29:29.789639 7f3b51a87700 10 journal commit_start blocked, all open_ops
have completed
> 2020-07-09 18:29:29.789641 7f3b51a87700 10 journal commit_start nothing to do
> 2020-07-09 18:29:29.789663 7f3b51a87700 20 filestore(/var/lib/ceph/osd/ceph-1)
sync_entry(3994): waiting for max_interval 5.000000
> 2020-07-09 18:29:34.789815 7f3b51a87700 20 filestore(/var/lib/ceph/osd/ceph-1)
sync_entry(4010): woke after 5.000109
> 2020-07-09 18:29:34.789898 7f3b51a87700 10 journal commit_start max_applied_seq
53085082, open_ops 0
> 2020-07-09 18:29:34.789902 7f3b51a87700 10 journal commit_start blocked, all open_ops
have completed
> 2020-07-09 18:29:34.789906 7f3b51a87700 10 journal commit_start nothing to do
> 2020-07-09 18:29:34.789939 7f3b51a87700 20 filestore(/var/lib/ceph/osd/ceph-1)
sync_entry(3994): waiting for max_interval 5.000000
> 2020-07-09 18:29:38.651689 7f3b680afd80 20 list_by_hash_bitwise prefix DA41
> 2020-07-09 18:29:39.790069 7f3b51a87700 20 filestore(/var/lib/ceph/osd/ceph-1)
sync_entry(4010): woke after 5.000128
> 2020-07-09 18:29:39.790090 7f3b51a87700 10 journal commit_start max_applied_seq
53085082, open_ops 0
> 2020-07-09 18:29:39.790092 7f3b51a87700 10 journal commit_start blocked, all open_ops
have completed
> 2020-07-09 18:29:39.790093 7f3b51a87700 10 journal commit_start nothing to do
> 2020-07-09 18:29:39.790102 7f3b51a87700 20 filestore(/var/lib/ceph/osd/ceph-1)
sync_entry(3994): waiting for max_interval 5.000000
> 2020-07-09 18:29:44.790200 7f3b51a87700 20 filestore(/var/lib/ceph/osd/ceph-1)
sync_entry(4010): woke after 5.000095
> 2020-07-09 18:29:44.790256 7f3b51a87700 10 journal commit_start max_applied_seq
53085082, open_ops 0
> 2020-07-09 18:29:44.790265 7f3b51a87700 10 journal commit_start blocked, all open_ops
have completed
> 2020-07-09 18:29:44.790268 7f3b51a87700 10 journal commit_start nothing to do
> 2020-07-09 18:29:44.790286 7f3b51a87700 20 filestore(/var/lib/ceph/osd/ceph-1)
sync_entry(3994): waiting for max_interval 5.000000
> 2020-07-09 18:29:49.790353 7f3b51a87700 20 filestore(/var/lib/ceph/osd/ceph-1)
sync_entry(4010): woke after 5.000066
> 2020-07-09 18:29:49.790374 7f3b51a87700 10 journal commit_start max_applied_seq
53085082, open_ops 0
> 2020-07-09 18:29:49.790376 7f3b51a87700 10 journal commit_start blocked, all open_ops
have completed
> 2020-07-09 18:29:49.790378 7f3b51a87700 10 journal commit_start nothing to do
> 2020-07-09 18:29:49.790387 7f3b51a87700 20 filestore(/var/lib/ceph/osd/ceph-1)
sync_entry(3994): waiting for max_interval 5.000000
> 2020-07-09 18:29:50.564479 7f3b680afd80 20 list_by_hash_bitwise prefix DA410000
> 2020-07-09 18:29:50.564501 7f3b680afd80 20 list_by_hash_bitwise prefix DA410000 ob
3#8:b5280000::::head#
> 2020-07-09 18:29:50.564508 7f3b680afd80 20 list_by_hash_bitwise prefix DA41002A
>
> Any idea what's going on here? I can run a find of every file on the filesystem
in under 12 minutes so I'm not sure what's taking so long.
>
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