Interesting. How often do you delete an image? I'm wondering if whatever this is happened when you deleted these two images. -Sam On Thu, Aug 20, 2015 at 3:42 PM, Voloshanenko Igor <igor.voloshanenko@xxxxxxxxx> wrote: > Sam, i try to understand which rbd contain this chunks.. but no luck. No rbd > images block names started with this... > >> Actually, now that I think about it, you probably didn't remove the >> images for 3fac9490/rbd_data.eb5f22eb141f2.00000000000004ba/snapdir//2 >> and 22ca30c4/rbd_data.e846e25a70bf7.0000000000000307/snapdir//2 > > > > > 2015-08-21 1:36 GMT+03:00 Samuel Just <sjust@xxxxxxxxxx>: >> >> Actually, now that I think about it, you probably didn't remove the >> images for 3fac9490/rbd_data.eb5f22eb141f2.00000000000004ba/snapdir//2 >> and 22ca30c4/rbd_data.e846e25a70bf7.0000000000000307/snapdir//2, but >> other images (that's why the scrub errors went down briefly, those >> objects -- which were fine -- went away). You might want to export >> and reimport those two images into new images, but leave the old ones >> alone until you can clean up the on disk state (image and snapshots) >> and clear the scrub errors. You probably don't want to read the >> snapshots for those images either. Everything else is, I think, >> harmless. >> >> The ceph-objectstore-tool feature would probably not be too hard, >> actually. Each head/snapdir image has two attrs (possibly stored in >> leveldb -- that's why you want to modify the ceph-objectstore-tool and >> use its interfaces rather than mucking about with the files directly) >> '_' and 'snapset' which contain encoded representations of >> object_info_t and SnapSet (both can be found in src/osd/osd_types.h). >> SnapSet has a set of clones and related metadata -- you want to read >> the SnapSet attr off disk and commit a transaction writing out a new >> version with that clone removed. I'd start by cloning the repo, >> starting a vstart cluster locally, and reproducing the issue. Next, >> get familiar with using ceph-objectstore-tool on the osds in that >> vstart cluster. A good first change would be creating a >> ceph-objectstore-tool op that lets you dump json for the object_info_t >> and SnapSet (both types have format() methods which make that easy) on >> an object to stdout so you can confirm what's actually there. oftc >> #ceph-devel or the ceph-devel mailing list would be the right place to >> ask questions. >> >> Otherwise, it'll probably get done in the next few weeks. >> -Sam >> >> On Thu, Aug 20, 2015 at 3:10 PM, Voloshanenko Igor >> <igor.voloshanenko@xxxxxxxxx> wrote: >> > thank you Sam! >> > I also noticed this linked errors during scrub... >> > >> > Now all lools like reasonable! >> > >> > So we will wait for bug to be closed. >> > >> > do you need any help on it? >> > >> > I mean i can help with coding/testing/etc... >> > >> > 2015-08-21 0:52 GMT+03:00 Samuel Just <sjust@xxxxxxxxxx>: >> >> >> >> Ah, this is kind of silly. I think you don't have 37 errors, but 2 >> >> errors. pg 2.490 object >> >> 3fac9490/rbd_data.eb5f22eb141f2.00000000000004ba/snapdir//2 is missing >> >> snap 141. If you look at the objects after that in the log: >> >> >> >> 2015-08-20 20:15:44.865670 osd.19 10.12.2.6:6838/1861727 298 : cluster >> >> [ERR] repair 2.490 >> >> 68c89490/rbd_data.16796a3d1b58ba.0000000000000047/head//2 expected >> >> clone 2d7b9490/rbd_data.18f92c3d1b58ba.0000000000006167/141//2 >> >> 2015-08-20 20:15:44.865817 osd.19 10.12.2.6:6838/1861727 299 : cluster >> >> [ERR] repair 2.490 >> >> ded49490/rbd_data.11a25c7934d3d4.0000000000008a8a/head//2 expected >> >> clone 68c89490/rbd_data.16796a3d1b58ba.0000000000000047/141//2 >> >> >> >> The clone from the second line matches the head object from the >> >> previous line, and they have the same clone id. I *think* that the >> >> first error is real, and the subsequent ones are just scrub being >> >> dumb. Same deal with pg 2.c4. I just opened >> >> http://tracker.ceph.com/issues/12738. >> >> >> >> The original problem is that >> >> 3fac9490/rbd_data.eb5f22eb141f2.00000000000004ba/snapdir//2 and >> >> 22ca30c4/rbd_data.e846e25a70bf7.0000000000000307/snapdir//2 are both >> >> missing a clone. Not sure how that happened, my money is on a >> >> cache/tiering evict racing with a snap trim. If you have any logging >> >> or relevant information from when that happened, you should open a >> >> bug. The 'snapdir' in the two object names indicates that the head >> >> object has actually been deleted (which makes sense if you moved the >> >> image to a new image and deleted the old one) and is only being kept >> >> around since there are live snapshots. I suggest you leave the >> >> snapshots for those images alone for the time being -- removing them >> >> might cause the osd to crash trying to clean up the wierd on disk >> >> state. Other than the leaked space from those two image snapshots and >> >> the annoying spurious scrub errors, I think no actual corruption is >> >> going on though. I created a tracker ticket for a feature that would >> >> let ceph-objectstore-tool remove the spurious clone from the >> >> head/snapdir metadata. >> >> >> >> Am I right that you haven't actually seen any osd crashes or user >> >> visible corruption (except possibly on snapshots of those two images)? >> >> -Sam >> >> >> >> On Thu, Aug 20, 2015 at 10:07 AM, Voloshanenko Igor >> >> <igor.voloshanenko@xxxxxxxxx> wrote: >> >> > Inktank: >> >> > >> >> > >> >> > https://download.inktank.com/docs/ICE%201.2%20-%20Cache%20and%20Erasure%20Coding%20FAQ.pdf >> >> > >> >> > Mail-list: >> >> > https://www.mail-archive.com/ceph-users@xxxxxxxxxxxxxx/msg18338.html >> >> > >> >> > 2015-08-20 20:06 GMT+03:00 Samuel Just <sjust@xxxxxxxxxx>: >> >> >> >> >> >> Which docs? >> >> >> -Sam >> >> >> >> >> >> On Thu, Aug 20, 2015 at 9:57 AM, Voloshanenko Igor >> >> >> <igor.voloshanenko@xxxxxxxxx> wrote: >> >> >> > Not yet. I will create. >> >> >> > But according to mail lists and Inktank docs - it's expected >> >> >> > behaviour >> >> >> > when >> >> >> > cache enable >> >> >> > >> >> >> > 2015-08-20 19:56 GMT+03:00 Samuel Just <sjust@xxxxxxxxxx>: >> >> >> >> >> >> >> >> Is there a bug for this in the tracker? >> >> >> >> -Sam >> >> >> >> >> >> >> >> On Thu, Aug 20, 2015 at 9:54 AM, Voloshanenko Igor >> >> >> >> <igor.voloshanenko@xxxxxxxxx> wrote: >> >> >> >> > 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 >> >> >> >> >> >> >> >> > >> >> >> >> >> >> >> > >> >> >> >> >> >> >> > >> >> >> >> >> >> > >> >> >> >> >> >> > >> >> >> >> >> > >> >> >> >> >> > >> >> >> >> > >> >> >> >> > >> >> >> > >> >> >> > >> >> > >> >> > >> > >> > > > _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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