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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