And you adjusted the journals by removing the osd, recreating it with a larger journal, and reinserting it? -Sam On Thu, Aug 20, 2015 at 4:24 PM, Voloshanenko Igor <igor.voloshanenko@xxxxxxxxx> wrote: > Right ( but also was rebalancing cycle 2 day before pgs corrupted) > > 2015-08-21 2:23 GMT+03:00 Samuel Just <sjust@xxxxxxxxxx>: >> >> Specifically, the snap behavior (we already know that the pgs went >> inconsistent while the pool was in writeback mode, right?). >> -Sam >> >> On Thu, Aug 20, 2015 at 4:22 PM, Samuel Just <sjust@xxxxxxxxxx> wrote: >> > Yeah, I'm trying to confirm that the issues did happen in writeback >> > mode. >> > -Sam >> > >> > On Thu, Aug 20, 2015 at 4:21 PM, Voloshanenko Igor >> > <igor.voloshanenko@xxxxxxxxx> wrote: >> >> Right. But issues started... >> >> >> >> 2015-08-21 2:20 GMT+03:00 Samuel Just <sjust@xxxxxxxxxx>: >> >>> >> >>> But that was still in writeback mode, right? >> >>> -Sam >> >>> >> >>> On Thu, Aug 20, 2015 at 4:18 PM, Voloshanenko Igor >> >>> <igor.voloshanenko@xxxxxxxxx> wrote: >> >>> > WE haven't set values for max_bytes / max_objects.. and all data >> >>> > initially >> >>> > writes only to cache layer and not flushed at all to cold layer. >> >>> > >> >>> > Then we received notification from monitoring that we collect about >> >>> > 750GB in >> >>> > hot pool ) So i changed values for max_object_bytes to be 0,9 of >> >>> > disk >> >>> > size... And then evicting/flushing started... >> >>> > >> >>> > And issue with snapshots arrived >> >>> > >> >>> > 2015-08-21 2:15 GMT+03:00 Samuel Just <sjust@xxxxxxxxxx>: >> >>> >> >> >>> >> Not sure what you mean by: >> >>> >> >> >>> >> but it's stop to work in same moment, when cache layer fulfilled >> >>> >> with >> >>> >> data and evict/flush started... >> >>> >> -Sam >> >>> >> >> >>> >> On Thu, Aug 20, 2015 at 4:11 PM, Voloshanenko Igor >> >>> >> <igor.voloshanenko@xxxxxxxxx> wrote: >> >>> >> > No, when we start draining cache - bad pgs was in place... >> >>> >> > We have big rebalance (disk by disk - to change journal side on >> >>> >> > both >> >>> >> > hot/cold layers).. All was Ok, but after 2 days - arrived scrub >> >>> >> > errors >> >>> >> > and 2 >> >>> >> > pgs inconsistent... >> >>> >> > >> >>> >> > In writeback - yes, looks like snapshot works good. but it's stop >> >>> >> > to >> >>> >> > work in >> >>> >> > same moment, when cache layer fulfilled with data and evict/flush >> >>> >> > started... >> >>> >> > >> >>> >> > >> >>> >> > >> >>> >> > 2015-08-21 2:09 GMT+03:00 Samuel Just <sjust@xxxxxxxxxx>: >> >>> >> >> >> >>> >> >> So you started draining the cache pool before you saw either the >> >>> >> >> inconsistent pgs or the anomalous snap behavior? (That is, >> >>> >> >> writeback >> >>> >> >> mode was working correctly?) >> >>> >> >> -Sam >> >>> >> >> >> >>> >> >> On Thu, Aug 20, 2015 at 4:07 PM, Voloshanenko Igor >> >>> >> >> <igor.voloshanenko@xxxxxxxxx> wrote: >> >>> >> >> > Good joke ))))))))) >> >>> >> >> > >> >>> >> >> > 2015-08-21 2:06 GMT+03:00 Samuel Just <sjust@xxxxxxxxxx>: >> >>> >> >> >> >> >>> >> >> >> Certainly, don't reproduce this with a cluster you care about >> >>> >> >> >> :). >> >>> >> >> >> -Sam >> >>> >> >> >> >> >>> >> >> >> On Thu, Aug 20, 2015 at 4:02 PM, Samuel Just >> >>> >> >> >> <sjust@xxxxxxxxxx> >> >>> >> >> >> wrote: >> >>> >> >> >> > What's supposed to happen is that the client transparently >> >>> >> >> >> > directs >> >>> >> >> >> > all >> >>> >> >> >> > requests to the cache pool rather than the cold pool when >> >>> >> >> >> > there >> >>> >> >> >> > is >> >>> >> >> >> > a >> >>> >> >> >> > cache pool. If the kernel is sending requests to the cold >> >>> >> >> >> > pool, >> >>> >> >> >> > that's probably where the bug is. Odd. It could also be a >> >>> >> >> >> > bug >> >>> >> >> >> > specific 'forward' mode either in the client or on the osd. >> >>> >> >> >> > Why >> >>> >> >> >> > did >> >>> >> >> >> > you have it in that mode? >> >>> >> >> >> > -Sam >> >>> >> >> >> > >> >>> >> >> >> > On Thu, Aug 20, 2015 at 3:58 PM, Voloshanenko Igor >> >>> >> >> >> > <igor.voloshanenko@xxxxxxxxx> wrote: >> >>> >> >> >> >> We used 4.x branch, as we have "very good" Samsung 850 pro >> >>> >> >> >> >> in >> >>> >> >> >> >> production, >> >>> >> >> >> >> and they don;t support ncq_trim... >> >>> >> >> >> >> >> >>> >> >> >> >> And 4,x first branch which include exceptions for this in >> >>> >> >> >> >> libsata.c. >> >>> >> >> >> >> >> >>> >> >> >> >> sure we can backport this 1 line to 3.x branch, but we >> >>> >> >> >> >> prefer >> >>> >> >> >> >> no >> >>> >> >> >> >> to >> >>> >> >> >> >> go >> >>> >> >> >> >> deeper if packege for new kernel exist. >> >>> >> >> >> >> >> >>> >> >> >> >> 2015-08-21 1:56 GMT+03:00 Voloshanenko Igor >> >>> >> >> >> >> <igor.voloshanenko@xxxxxxxxx>: >> >>> >> >> >> >>> >> >>> >> >> >> >>> root@test:~# uname -a >> >>> >> >> >> >>> Linux ix-s5 4.0.4-040004-generic #201505171336 SMP Sun >> >>> >> >> >> >>> May 17 >> >>> >> >> >> >>> 17:37:22 >> >>> >> >> >> >>> UTC >> >>> >> >> >> >>> 2015 x86_64 x86_64 x86_64 GNU/Linux >> >>> >> >> >> >>> >> >>> >> >> >> >>> 2015-08-21 1:54 GMT+03:00 Samuel Just <sjust@xxxxxxxxxx>: >> >>> >> >> >> >>>> >> >>> >> >> >> >>>> Also, can you include the kernel version? >> >>> >> >> >> >>>> -Sam >> >>> >> >> >> >>>> >> >>> >> >> >> >>>> On Thu, Aug 20, 2015 at 3:51 PM, Samuel Just >> >>> >> >> >> >>>> <sjust@xxxxxxxxxx> >> >>> >> >> >> >>>> wrote: >> >>> >> >> >> >>>> > Snapshotting with cache/tiering *is* supposed to work. >> >>> >> >> >> >>>> > Can >> >>> >> >> >> >>>> > you >> >>> >> >> >> >>>> > open a >> >>> >> >> >> >>>> > bug? >> >>> >> >> >> >>>> > -Sam >> >>> >> >> >> >>>> > >> >>> >> >> >> >>>> > On Thu, Aug 20, 2015 at 3:36 PM, Andrija Panic >> >>> >> >> >> >>>> > <andrija.panic@xxxxxxxxx> wrote: >> >>> >> >> >> >>>> >> This was related to the caching layer, which doesnt >> >>> >> >> >> >>>> >> support >> >>> >> >> >> >>>> >> snapshooting per >> >>> >> >> >> >>>> >> docs...for sake of closing the thread. >> >>> >> >> >> >>>> >> >> >>> >> >> >> >>>> >> On 17 August 2015 at 21:15, Voloshanenko Igor >> >>> >> >> >> >>>> >> <igor.voloshanenko@xxxxxxxxx> >> >>> >> >> >> >>>> >> wrote: >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> Hi all, can you please help me with unexplained >> >>> >> >> >> >>>> >>> situation... >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> All snapshot inside ceph broken... >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> So, as example, we have VM template, as rbd inside >> >>> >> >> >> >>>> >>> ceph. >> >>> >> >> >> >>>> >>> We can map it and mount to check that all ok with it >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> root@test:~# rbd map >> >>> >> >> >> >>>> >>> cold-storage/0e23c701-401d-4465-b9b4-c02939d57bb5 >> >>> >> >> >> >>>> >>> /dev/rbd0 >> >>> >> >> >> >>>> >>> root@test:~# parted /dev/rbd0 print >> >>> >> >> >> >>>> >>> Model: Unknown (unknown) >> >>> >> >> >> >>>> >>> Disk /dev/rbd0: 10.7GB >> >>> >> >> >> >>>> >>> Sector size (logical/physical): 512B/512B >> >>> >> >> >> >>>> >>> Partition Table: msdos >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> Number Start End Size Type File system >> >>> >> >> >> >>>> >>> Flags >> >>> >> >> >> >>>> >>> 1 1049kB 525MB 524MB primary ext4 >> >>> >> >> >> >>>> >>> boot >> >>> >> >> >> >>>> >>> 2 525MB 10.7GB 10.2GB primary >> >>> >> >> >> >>>> >>> lvm >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> Than i want to create snap, so i do: >> >>> >> >> >> >>>> >>> root@test:~# rbd snap create >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> cold-storage/0e23c701-401d-4465-b9b4-c02939d57bb5@new_snap >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> And now i want to map it: >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> root@test:~# rbd map >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> cold-storage/0e23c701-401d-4465-b9b4-c02939d57bb5@new_snap >> >>> >> >> >> >>>> >>> /dev/rbd1 >> >>> >> >> >> >>>> >>> root@test:~# parted /dev/rbd1 print >> >>> >> >> >> >>>> >>> Warning: Unable to open /dev/rbd1 read-write >> >>> >> >> >> >>>> >>> (Read-only >> >>> >> >> >> >>>> >>> file >> >>> >> >> >> >>>> >>> system). >> >>> >> >> >> >>>> >>> /dev/rbd1 has been opened read-only. >> >>> >> >> >> >>>> >>> Warning: Unable to open /dev/rbd1 read-write >> >>> >> >> >> >>>> >>> (Read-only >> >>> >> >> >> >>>> >>> file >> >>> >> >> >> >>>> >>> system). >> >>> >> >> >> >>>> >>> /dev/rbd1 has been opened read-only. >> >>> >> >> >> >>>> >>> Error: /dev/rbd1: unrecognised disk label >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> Even md5 different... >> >>> >> >> >> >>>> >>> root@ix-s2:~# md5sum /dev/rbd0 >> >>> >> >> >> >>>> >>> 9a47797a07fee3a3d71316e22891d752 /dev/rbd0 >> >>> >> >> >> >>>> >>> root@ix-s2:~# md5sum /dev/rbd1 >> >>> >> >> >> >>>> >>> e450f50b9ffa0073fae940ee858a43ce /dev/rbd1 >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> Ok, now i protect snap and create clone... but same >> >>> >> >> >> >>>> >>> thing... >> >>> >> >> >> >>>> >>> md5 for clone same as for snap,, >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> root@test:~# rbd unmap /dev/rbd1 >> >>> >> >> >> >>>> >>> root@test:~# rbd snap protect >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> cold-storage/0e23c701-401d-4465-b9b4-c02939d57bb5@new_snap >> >>> >> >> >> >>>> >>> root@test:~# rbd clone >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> cold-storage/0e23c701-401d-4465-b9b4-c02939d57bb5@new_snap >> >>> >> >> >> >>>> >>> cold-storage/test-image >> >>> >> >> >> >>>> >>> root@test:~# rbd map cold-storage/test-image >> >>> >> >> >> >>>> >>> /dev/rbd1 >> >>> >> >> >> >>>> >>> root@test:~# md5sum /dev/rbd1 >> >>> >> >> >> >>>> >>> e450f50b9ffa0073fae940ee858a43ce /dev/rbd1 >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> .... but it's broken... >> >>> >> >> >> >>>> >>> root@test:~# parted /dev/rbd1 print >> >>> >> >> >> >>>> >>> Error: /dev/rbd1: unrecognised disk label >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> ========= >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> tech details: >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> root@test:~# ceph -v >> >>> >> >> >> >>>> >>> ceph version 0.94.2 >> >>> >> >> >> >>>> >>> (5fb85614ca8f354284c713a2f9c610860720bbf3) >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> We have 2 inconstistent pgs, but all images not >> >>> >> >> >> >>>> >>> placed >> >>> >> >> >> >>>> >>> on >> >>> >> >> >> >>>> >>> this >> >>> >> >> >> >>>> >>> pgs... >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> root@test:~# ceph health detail >> >>> >> >> >> >>>> >>> 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] >> >>> >> >> >> >>>> >>> 18 scrub errors >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> ============ >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> root@test:~# ceph osd map cold-storage >> >>> >> >> >> >>>> >>> 0e23c701-401d-4465-b9b4-c02939d57bb5 >> >>> >> >> >> >>>> >>> osdmap e16770 pool 'cold-storage' (2) object >> >>> >> >> >> >>>> >>> '0e23c701-401d-4465-b9b4-c02939d57bb5' -> pg >> >>> >> >> >> >>>> >>> 2.74458f70 >> >>> >> >> >> >>>> >>> (2.770) >> >>> >> >> >> >>>> >>> -> up >> >>> >> >> >> >>>> >>> ([37,15,14], p37) acting ([37,15,14], p37) >> >>> >> >> >> >>>> >>> root@test:~# ceph osd map cold-storage >> >>> >> >> >> >>>> >>> 0e23c701-401d-4465-b9b4-c02939d57bb5@snap >> >>> >> >> >> >>>> >>> osdmap e16770 pool 'cold-storage' (2) object >> >>> >> >> >> >>>> >>> '0e23c701-401d-4465-b9b4-c02939d57bb5@snap' -> pg >> >>> >> >> >> >>>> >>> 2.793cd4a3 >> >>> >> >> >> >>>> >>> (2.4a3) >> >>> >> >> >> >>>> >>> -> up >> >>> >> >> >> >>>> >>> ([12,23,17], p12) acting ([12,23,17], p12) >> >>> >> >> >> >>>> >>> root@test:~# ceph osd map cold-storage >> >>> >> >> >> >>>> >>> 0e23c701-401d-4465-b9b4-c02939d57bb5@test-image >> >>> >> >> >> >>>> >>> osdmap e16770 pool 'cold-storage' (2) object >> >>> >> >> >> >>>> >>> '0e23c701-401d-4465-b9b4-c02939d57bb5@test-image' -> >> >>> >> >> >> >>>> >>> pg >> >>> >> >> >> >>>> >>> 2.9519c2a9 >> >>> >> >> >> >>>> >>> (2.2a9) >> >>> >> >> >> >>>> >>> -> up ([12,44,23], p12) acting ([12,44,23], p12) >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> Also we use cache layer, which in current moment - >> >>> >> >> >> >>>> >>> in >> >>> >> >> >> >>>> >>> forward >> >>> >> >> >> >>>> >>> mode... >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> Can you please help me with this.. As my brain stop >> >>> >> >> >> >>>> >>> to >> >>> >> >> >> >>>> >>> understand >> >>> >> >> >> >>>> >>> what is >> >>> >> >> >> >>>> >>> going on... >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> Thank in advance! >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> _______________________________________________ >> >>> >> >> >> >>>> >>> ceph-users mailing list >> >>> >> >> >> >>>> >>> ceph-users@xxxxxxxxxxxxxx >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >> >>> >> >> >> >>>> >>> >> >>> >> >> >> >>>> >> >> >>> >> >> >> >>>> >> >> >>> >> >> >> >>>> >> >> >>> >> >> >> >>>> >> -- >> >>> >> >> >> >>>> >> >> >>> >> >> >> >>>> >> Andrija Panić >> >>> >> >> >> >>>> >> >> >>> >> >> >> >>>> >> _______________________________________________ >> >>> >> >> >> >>>> >> 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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