Issue, that in forward mode, fstrim doesn't work proper, and when we take snapshot - data not proper update in cache layer, and client (ceph) see damaged snap.. As headers requested from cache layer.
2015-08-20 19:53 GMT+03:00 Samuel Just <sjust@xxxxxxxxxx>:
What was the issue?
-Sam
On Thu, Aug 20, 2015 at 9:41 AM, Voloshanenko Igor
<igor.voloshanenko@xxxxxxxxx> wrote:
> Samuel, we turned off cache layer few hours ago...
> I will post ceph.log in few minutes
>
> For snap - we found issue, was connected with cache tier..
>
> 2015-08-20 19:23 GMT+03:00 Samuel Just <sjust@xxxxxxxxxx>:
>>
>> Ok, you appear to be using a replicated cache tier in front of a
>> replicated base tier. Please scrub both inconsistent pgs and post the
>> ceph.log from before when you started the scrub until after. Also,
>> what command are you using to take snapshots?
>> -Sam
>>
>> On Thu, Aug 20, 2015 at 3:59 AM, Voloshanenko Igor
>> <igor.voloshanenko@xxxxxxxxx> wrote:
>> > Hi Samuel, we try to fix it in trick way.
>> >
>> > we check all rbd_data chunks from logs (OSD) which are affected, then
>> > query
>> > rbd info to compare which rbd consist bad rbd_data, after that we mount
>> > this
>> > rbd as rbd0, create empty rbd, and DD all info from bad volume to new
>> > one.
>> >
>> > But after that - scrub errors growing... Was 15 errors.. .Now 35... We
>> > laos
>> > try to out OSD which was lead, but after rebalancing this 2 pgs still
>> > have
>> > 35 scrub errors...
>> >
>> > ceph osd getmap -o <outfile> - attached
>> >
>> >
>> > 2015-08-18 18:48 GMT+03:00 Samuel Just <sjust@xxxxxxxxxx>:
>> >>
>> >> Is the number of inconsistent objects growing? Can you attach the
>> >> whole ceph.log from the 6 hours before and after the snippet you
>> >> linked above? Are you using cache/tiering? Can you attach the osdmap
>> >> (ceph osd getmap -o <outfile>)?
>> >> -Sam
>> >>
>> >> On Tue, Aug 18, 2015 at 4:15 AM, Voloshanenko Igor
>> >> <igor.voloshanenko@xxxxxxxxx> wrote:
>> >> > ceph - 0.94.2
>> >> > Its happen during rebalancing
>> >> >
>> >> > I thought too, that some OSD miss copy, but looks like all miss...
>> >> > So any advice in which direction i need to go
>> >> >
>> >> > 2015-08-18 14:14 GMT+03:00 Gregory Farnum <gfarnum@xxxxxxxxxx>:
>> >> >>
>> >> >> From a quick peek it looks like some of the OSDs are missing clones
>> >> >> of
>> >> >> objects. I'm not sure how that could happen and I'd expect the pg
>> >> >> repair to handle that but if it's not there's probably something
>> >> >> wrong; what version of Ceph are you running? Sam, is this something
>> >> >> you've seen, a new bug, or some kind of config issue?
>> >> >> -Greg
>> >> >>
>> >> >> On Tue, Aug 18, 2015 at 6:27 AM, Voloshanenko Igor
>> >> >> <igor.voloshanenko@xxxxxxxxx> wrote:
>> >> >> > Hi all, at our production cluster, due high rebalancing ((( we
>> >> >> > have 2
>> >> >> > pgs in
>> >> >> > inconsistent state...
>> >> >> >
>> >> >> > root@temp:~# ceph health detail | grep inc
>> >> >> > HEALTH_ERR 2 pgs inconsistent; 18 scrub errors
>> >> >> > pg 2.490 is active+clean+inconsistent, acting [56,15,29]
>> >> >> > pg 2.c4 is active+clean+inconsistent, acting [56,10,42]
>> >> >> >
>> >> >> > From OSD logs, after recovery attempt:
>> >> >> >
>> >> >> > root@test:~# ceph pg dump | grep -i incons | cut -f 1 | while read
>> >> >> > i;
>> >> >> > do
>> >> >> > ceph pg repair ${i} ; done
>> >> >> > dumped all in format plain
>> >> >> > instructing pg 2.490 on osd.56 to repair
>> >> >> > instructing pg 2.c4 on osd.56 to repair
>> >> >> >
>> >> >> > /var/log/ceph/ceph-osd.56.log:51:2015-08-18 07:26:37.035910
>> >> >> > 7f94663b3700
>> >> >> > -1
>> >> >> > log_channel(cluster) log [ERR] : deep-scrub 2.490
>> >> >> > f5759490/rbd_data.1631755377d7e.00000000000004da/head//2 expected
>> >> >> > clone
>> >> >> > 90c59490/rbd_data.eb486436f2beb.0000000000007a65/141//2
>> >> >> > /var/log/ceph/ceph-osd.56.log:52:2015-08-18 07:26:37.035960
>> >> >> > 7f94663b3700
>> >> >> > -1
>> >> >> > log_channel(cluster) log [ERR] : deep-scrub 2.490
>> >> >> > fee49490/rbd_data.12483d3ba0794b.000000000000522f/head//2 expected
>> >> >> > clone
>> >> >> > f5759490/rbd_data.1631755377d7e.00000000000004da/141//2
>> >> >> > /var/log/ceph/ceph-osd.56.log:53:2015-08-18 07:26:37.036133
>> >> >> > 7f94663b3700
>> >> >> > -1
>> >> >> > log_channel(cluster) log [ERR] : deep-scrub 2.490
>> >> >> > a9b39490/rbd_data.12483d3ba0794b.00000000000037b3/head//2 expected
>> >> >> > clone
>> >> >> > fee49490/rbd_data.12483d3ba0794b.000000000000522f/141//2
>> >> >> > /var/log/ceph/ceph-osd.56.log:54:2015-08-18 07:26:37.036243
>> >> >> > 7f94663b3700
>> >> >> > -1
>> >> >> > log_channel(cluster) log [ERR] : deep-scrub 2.490
>> >> >> > bac19490/rbd_data.1238e82ae8944a.000000000000032e/head//2 expected
>> >> >> > clone
>> >> >> > a9b39490/rbd_data.12483d3ba0794b.00000000000037b3/141//2
>> >> >> > /var/log/ceph/ceph-osd.56.log:55:2015-08-18 07:26:37.036289
>> >> >> > 7f94663b3700
>> >> >> > -1
>> >> >> > log_channel(cluster) log [ERR] : deep-scrub 2.490
>> >> >> > 98519490/rbd_data.123e9c2ae8944a.0000000000000807/head//2 expected
>> >> >> > clone
>> >> >> > bac19490/rbd_data.1238e82ae8944a.000000000000032e/141//2
>> >> >> > /var/log/ceph/ceph-osd.56.log:56:2015-08-18 07:26:37.036314
>> >> >> > 7f94663b3700
>> >> >> > -1
>> >> >> > log_channel(cluster) log [ERR] : deep-scrub 2.490
>> >> >> > c3c09490/rbd_data.1238e82ae8944a.0000000000000c2b/head//2 expected
>> >> >> > clone
>> >> >> > 98519490/rbd_data.123e9c2ae8944a.0000000000000807/141//2
>> >> >> > /var/log/ceph/ceph-osd.56.log:57:2015-08-18 07:26:37.036363
>> >> >> > 7f94663b3700
>> >> >> > -1
>> >> >> > log_channel(cluster) log [ERR] : deep-scrub 2.490
>> >> >> > 28809490/rbd_data.edea7460fe42b.00000000000001d9/head//2 expected
>> >> >> > clone
>> >> >> > c3c09490/rbd_data.1238e82ae8944a.0000000000000c2b/141//2
>> >> >> > /var/log/ceph/ceph-osd.56.log:58:2015-08-18 07:26:37.036432
>> >> >> > 7f94663b3700
>> >> >> > -1
>> >> >> > log_channel(cluster) log [ERR] : deep-scrub 2.490
>> >> >> > e1509490/rbd_data.1423897545e146.00000000000009a6/head//2 expected
>> >> >> > clone
>> >> >> > 28809490/rbd_data.edea7460fe42b.00000000000001d9/141//2
>> >> >> > /var/log/ceph/ceph-osd.56.log:59:2015-08-18 07:26:38.548765
>> >> >> > 7f94663b3700
>> >> >> > -1
>> >> >> > log_channel(cluster) log [ERR] : 2.490 deep-scrub 17 errors
>> >> >> >
>> >> >> > So, how i can solve "expected clone" situation by hand?
>> >> >> > Thank in advance!
>> >> >> >
>> >> >> >
>> >> >> >
>> >> >> > _______________________________________________
>> >> >> > ceph-users mailing list
>> >> >> > ceph-users@xxxxxxxxxxxxxx
>> >> >> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>> >> >> >
>> >> >
>> >> >
>> >
>> >
>
>
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