Hello Jason,
here it is:
[root@vfnphav1a ceph]# rbd snap protect ssd2r/template-win2k8-20150420_@snap
2015-04-20 18:33:43.635427 7fa0344ca760 20 librbd::ImageCtx: enabling caching...
2015-04-20 18:33:43.635458 7fa0344ca760 20 librbd::ImageCtx: Initial cache settings: size=33554432 num_objects=10 max_dirty=25165824 target_dirty=16777216 max_dirty_age=1
2015-04-20 18:33:43.635497 7fa0344ca760 20 librbd: open_image: ictx = 0x4672010 name = 'template-win2k8-20150420_' id = '' snap_name = ''
2015-04-20 18:33:43.636792 7fa0344ca760 20 librbd: detect format of template-win2k8-20150420_ : new
2015-04-20 18:33:43.637901 7fa0344ca760 10 librbd::ImageCtx: cache bytes 33554432 order 22 -> about 42 objects
2015-04-20 18:33:43.637906 7fa0344ca760 10 librbd::ImageCtx: init_layout stripe_unit 4194304 stripe_count 1 object_size 4194304 prefix rbd_data.5e6236db3ab3 format rbd_data.5e6236db3ab3.%016llx
2015-04-20 18:33:43.637932 7fa0344ca760 10 librbd::ImageWatcher: registering image watcher
2015-04-20 18:33:43.643651 7fa0344ca760 20 librbd: ictx_refresh 0x4672010
2015-04-20 18:33:43.645062 7fa0344ca760 20 librbd: new snapshot id=6 name=snap size=42949672960 features=0
2015-04-20 18:33:43.645075 7fa0344ca760 20 librbd::ImageCtx: finished flushing cache
2015-04-20 18:33:43.645083 7fa0344ca760 20 librbd: snap_protect 0x4672010 snap
2015-04-20 18:33:43.645089 7fa0344ca760 20 librbd: ictx_check 0x4672010
2015-04-20 18:33:43.645090 7fa0344ca760 -1 librbd: snap_protect: image must support layering
rbd: protecting snap failed: (38) Function not implemented
2015-04-20 18:33:43.645115 7fa0344ca760 20 librbd: close_image 0x4672010
2015-04-20 18:33:43.645117 7fa0344ca760 10 librbd::ImageCtx: canceling async requests: count=0
2015-04-20 18:33:43.645148 7fa0344ca760 10 librbd::ImageWatcher: unregistering image watcher
In the meantime, I realised what could be the difference here.. the image I've got trouble protecting
snapshot is created using python rbd binding..
here's simple script to reproduce:
#!/usr/bin/python
import rados
import rbd
rc=rados.Rados(conffile='/etc/ceph/ceph.conf')
rc.connect()
ioctx = rc.open_ioctx('ssd2r')
rbdi=rbd.RBD()
rbdi.create(ioctx, 'test', 1024**2, old_format=False)
will it help?
BR
nik
On Mon, Apr 20, 2015 at 11:35:07AM -0400, Jason Dillaman wrote:
> Can you add "debug rbd = 20" your ceph.conf, re-run the command, and provide a link to the generated librbd log messages?
>
> Thanks,
>
> --
>
> Jason Dillaman
> Red Hat
> dillaman@xxxxxxxxxx
> http://www.redhat.com
>
>
> ----- Original Message -----
> From: "Nikola Ciprich" <nikola.ciprich@xxxxxxxxxxx>
> To: ceph-users@xxxxxxxxxxxxxx
> Sent: Monday, April 20, 2015 10:54:17 AM
> Subject: hammer (0.94.1) - "image must support layering(38) Function not implemented" on v2 image
>
> Hello,
>
> I'd like to ask about another problem I've stumbled upon..
>
> I've got format 2 image + snapshot, and while trying to protect snapshot
> I'm getting following error:
>
> [root@vfnphav1a ~]# rbd ls -l ssd2r
> NAME SIZE PARENT FMT PROT LOCK
> fio_test 4096M 2
> template-win2k8-20150420 40960M 2
> template-win2k8-20150420@snap 40960M 2
>
> [root@vfnphav1a ~]# rbd snap protect ssd2r/template-win2k8-20150420@snap
> rbd: protecting snap failed: 2015-04-20 16:47:31.587489 7f5e9e4fa760 -1 librbd: snap_protect: image must support layering(38) Function not implemented
>
>
> am I doing something wrong?
>
> thanks a lot in advance for reply
>
> BR
>
> nik
>
>
> --
> -------------------------------------
> Ing. Nikola CIPRICH
> LinuxBox.cz, s.r.o.
> 28.rijna 168, 709 00 Ostrava
>
> tel.: +420 591 166 214
> fax: +420 596 621 273
> mobil: +420 777 093 799
> www.linuxbox.cz
>
> mobil servis: +420 737 238 656
> email servis: servis@xxxxxxxxxxx
> -------------------------------------
>
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>
--
-------------------------------------
Ing. Nikola CIPRICH
LinuxBox.cz, s.r.o.
28.rijna 168, 709 00 Ostrava
tel.: +420 591 166 214
fax: +420 596 621 273
mobil: +420 777 093 799
www.linuxbox.cz
mobil servis: +420 737 238 656
email servis: servis@xxxxxxxxxxx
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