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
>>
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