I already kill cache layer, but will try to reproduce on lab 2015-08-21 1:58 GMT+03:00 Samuel Just <[email protected]>:
> Hmm, that might actually be client side. Can you attempt to reproduce > with rbd-fuse (different client side implementation from the kernel)? > -Sam > > On Thu, Aug 20, 2015 at 3:56 PM, Voloshanenko Igor > <[email protected]> wrote: > > 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 <[email protected]>: > >> > >> Also, can you include the kernel version? > >> -Sam > >> > >> On Thu, Aug 20, 2015 at 3:51 PM, Samuel Just <[email protected]> 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 < > [email protected]> > >> > 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 > >> >> <[email protected]> > >> >> 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 > >> >>> [email protected] > >> >>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > >> >>> > >> >> > >> >> > >> >> > >> >> -- > >> >> > >> >> Andrija Panić > >> >> > >> >> _______________________________________________ > >> >> ceph-users mailing list > >> >> [email protected] > >> >> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > >> >> > > > > >
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