14 Jul
2020
14 Jul
'20
5:47 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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14 Jul
14 Jul
5:51 p.m.
New subject: Luminous 12.2.12 - filestore OSDs take an hour to boot
We're lucky that we are in the process of expanding the cluster, instead of expanding
we'll just build a new Bluestore cluster and migrate data to it.
-----Original Message-----
From: Dan van der Ster <dan(a)vanderster.com>
Sent: Tuesday, July 14, 2020 9:17 AM
To: Eric Smith <Eric.Smith(a)vecima.com>
Cc: ceph-users(a)ceph.io
Subject: Re: [ceph-users] Re: Luminous 12.2.12 - filestore OSDs take an hour to boot
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-2162037
06303281120-230932949-1593482400-159348660000000001\swzdchd\u\utpc2-tp
1-1008007-wzdchd-216203706303281120-230932949-1593482400-1593486600000
00001\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.
_______________________________________________
ceph-users mailing list -- ceph-users(a)ceph.io To unsubscribe send an
email to ceph-users-leave(a)ceph.io
_______________________________________________
ceph-users mailing list -- ceph-users(a)ceph.io To unsubscribe send an
email to ceph-users-leave(a)ceph.io
_______________________________________________
ceph-users mailing list -- ceph-users(a)ceph.io To unsubscribe send an
email to ceph-users-leave(a)ceph.io
_______________________________________________
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1383
days inactive
1383
days old
1 comments
2 participants
participants (2)
-
Dan van der Ster -
Eric Smith