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On 9/12/17 9:13 PM, Josh Durgin wrote:
Could you
post your crushmap? PGs mapping to no OSDs is a symptom of
something wrong there.
You can stop
the osds from changing position at startup with 'osd crush
update on start = false':
Yes I had found that. Thanks. Seems be be by design, which we
didn't understand.
We will try device classes.
My "Big" problem, turned out to be a cosmetic problem.
Although the whole problem looks quite ugly, and every metric is 0
where ever you look.
And you can't really use any ceph management anymore.
But the whole system kept functioning. Since it was a remote test
site I didn't notice that earlier.
So the whole problem was that the MGR server where up. But that a
firewall prevented contact.
At the moment that "ceph osd require-osd-release luminous" was set
the old compatible metric system stopped working and switched to the
mandatory MGR servers.
And then you get this types of 0 messages.
So even without visual management, and administrator thinking it was
dead, ceph kept running.
One could say that Ceph also managed to create a succesfull upgrade
path to 12.2. Well done.
Thanks for your time
The only minor problem left is with scrub error and pg repair doing
nothing.
And because of bluestore not easy acces to the files
rados list-inconsistent-pg default.rgw.buckets.data
["15.720"]
rados list-inconsistent-obj 15.720 --format=json-pretty
No scrub information available for pg 15.720
error 2: (2) No such file or directory
Other people seem to also have this problem.
http://tracker.ceph.com/issues/15781
I've read that perhaps a better pg-repair will be build. Will wait
for that.
We have a kraken cluster, at the time newly
build, with bluestore enabled.
it is 8 systems, with each 10 disks 10TB , and each
computer has 1 NVME
2TB disk
3 monitor etc
About 700 TB and 300TB used. Mainly S3 objectstore
Of course there is more to the story: We have one strange
thing in our
cluster.
We tried to create two pools of storage, default and ssd,
and created a
new crush rule.
Worked without problems for months
But when we restart a computer / nvme-osd, it would
"forget" that the
nvme should be connected the SSD pool ( for that
particular computer).
Since we don't restart systems, we didn't notice that.
The nvme would appear back a default pool.
When we re-apply the same crush rule again it would go
back to the SSD
pool.
All while data kept working on the nvme disks
Clearly something is not ideal there. And luminous has a
different
approach to separating SSD from HDD.
So we thought first go to luminous 12.2.0 and later see
how we fix this.
We did an upgrade to luminous and that went well. That
requires a reboot
/ restart off osd's, so all nvme devices where a default.
Reapplying the crush rule brought them back to the ssd
pool.
Also while doing the upgrade we switched off in ceph.conf
the rule:
# enable experimental unrecoverable data corrupting
features =
bluestore, sine in luminous that was no problem
Everything was working fine.
In Ceph -s we had this health warning
all OSDs are running luminous or later but
require_osd_release < luminous
So i thought i would set the minimum OSD version to
luminous with;
ceph osd require-osd-release luminous
To us that seemed nothing more than a minimum software
version that was
required to connect tot the cluster
the system answered back
recovery_deletes is set
and that was it, the same second, ceph-s went to "0"
ceph -s
cluster:
id: 5bafad08-31b2-4716-be77-07ad2e2647eb
health: HEALTH_WARN
noout flag(s) set
Reduced data availability: 3248 pgs inactive
Degraded data redundancy: 3248 pgs unclean
services:
mon: 3 daemons, quorum Ceph-Mon1,Ceph-Mon2,Ceph-Mon3
mgr: Ceph-Mon2(active), standbys: Ceph-Mon3,
Ceph-Mon1
osd: 88 osds: 88 up, 88 in; 297 remapped pgs
flags noout
data:
pools: 26 pools, 3248 pgs
objects: 0 objects, 0 bytes
usage: 0 kB used, 0 kB / 0 kB avail
pgs: 100.000% pgs unknown
3248 unknown
And it was something like this. The errors (apart from
the scrub error)
you see would where from the upgrade / restarting, and I
would expect
them to go away very fast.
ceph -s
cluster:
id: 5bafad08-31b2-4716-be77-07ad2e2647eb
health: HEALTH_ERR
385 pgs backfill_wait
5 pgs backfilling
135 pgs degraded
1 pgs inconsistent
1 pgs peering
4 pgs recovering
131 pgs recovery_wait
98 pgs stuck degraded
525 pgs stuck unclean
recovery 119/612465488 objects degraded
(0.000%)
recovery 24/612465488 objects misplaced
(0.000%)
1 scrub errors
noout flag(s) set
all OSDs are running luminous or later but
require_osd_release < luminous
services:
mon: 3 daemons, quorum Ceph-Mon1,Ceph-Mon2,Ceph-Mon3
mgr: Ceph-Mon2(active), standbys: Ceph-Mon1,
Ceph-Mon3
osd: 88 osds: 88 up, 88 in; 387 remapped pgs
flags noout
data:
pools: 26 pools, 3248 pgs
objects: 87862k objects, 288 TB
usage: 442 TB used, 300 TB / 742 TB avail
pgs: 0.031% pgs not active
119/612465488 objects degraded (0.000%)
24/612465488 objects misplaced (0.000%)
2720 active+clean
385 active+remapped+backfill_wait
131 active+recovery_wait+degraded
5 active+remapped+backfilling
4 active+recovering+degraded
1 active+clean+inconsistent
1 peering
1 active+clean+scrubbing+deep
io:
client: 34264 B/s rd, 2091 kB/s wr, 38 op/s rd, 48
op/s wr
recovery: 4235 kB/s, 6 objects/s
current ceph health detail
HEALTH_WARN noout flag(s) set; Reduced data availability:
3248 pgs
inactive; Degraded data redundancy: 3248 pgs unclean
OSDMAP_FLAGS noout flag(s) set
PG_AVAILABILITY Reduced data availability: 3248 pgs
inactive
pg 15.7cd is stuck inactive for 24780.157341, current
state
unknown, last acting []
pg 15.7ce is stuck inactive for 24780.157341, current
state
unknown, last acting []
pg 15.7cf is stuck inactive for 24780.157341, current
state
unknown, last acting []
..
pg 15.7ff is stuck inactive for 24728.059692, current
state
unknown, last acting []
PG_DEGRADED Degraded data redundancy: 3248 pgs unclean
pg 15.7cd is stuck unclean for 24728.059692, current
state unknown,
last acting []
pg 15.7ce is stuck unclean for 24728.059692, current
state unknown,
last acting []
....
pg 15.7fc is stuck unclean for 21892.783340, current
state unknown,
last acting []
pg 15.7fd is stuck unclean for 21892.783340, current
state unknown,
last acting []
pg 15.7fe is stuck unclean for 21892.783340, current
state unknown,
last acting []
pg 15.7ff is stuck unclean for 21892.783340, current
state unknown,
last acting []
ceph pg dump_stuck unclean | more
15.46b unknown [] -1 [] -1
15.46a unknown [] -1 [] -1
15.469 unknown [] -1 [] -1
15.468 unknown [] -1 [] -1
15.467 unknown [] -1 [] -1
15.466 unknown [] -1 [] -1
15.465 unknown [] -1 [] -1
15.464 unknown [] -1 [] -1
15.463 unknown [] -1 [] -1
....
Any idea's
Greetings JW
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