On Fri, 23 Sep 2011, Martin Mailand wrote: > Hi, > that's great, and it is safe to start diffrent vms with diffrent snapshots of > the same image at the same time? Yeah. Just remember they're read-only... sage > > Best Regards, > Martin > > Sage Weil schrieb: > > On Fri, 23 Sep 2011, Martin Mailand wrote: > > > Hi, > > > is it possible to access snapshots without to rollback the head of the rbd > > > volumen? > > > Because I want to do a snapshot of a vm running via librbd and qemu, and > > > use > > > the snapshot to make a offsite backup of the vm. > > > > $ rbd export foo --snap=mysnap /path/to/foo.dump > > > > You can also map the snapshot via qemu with a string like > > rbd:rbd/foo@mysnap. > > > > sage > > > > > > > Best Regards, > > > Martin > > > > > > > > > Martin Mailand schrieb: > > > > Okay, with the btrfs patch and the right commandline snapshotting works > > > > like > > > > a charm. > > > > > > > > best regards, > > > > martin > > > > > > > > Josh Durgin schrieb: > > > > > On 09/16/2011 02:32 PM, Martin Mailand wrote: > > > > > > root@c-brick-001:~# rbd rm --snap=2011091601 test > > > > > > *** Caught signal (Segmentation fault) ** > > > > > > in thread 0x7f203d749740 > > > > > > ceph version 0.34 (commit:2f039eeeb745622b866d80feda7afa055e15f6d6) > > > > > > 1: rbd() [0x457062] > > > > > > 2: (()+0xfc60) [0x7f203ccf6c60] > > > > > > 3: (librbd::snap_set(librbd::ImageCtx*, char const*)+0x10) > > > > > > [0x7f203d32ecd0] > > > > > > 4: (main()+0x59f) [0x4518ff] > > > > > > 5: (__libc_start_main()+0xff) [0x7f203b6cdeff] > > > > > > 6: rbd() [0x44d569] > > > > > > Segmentation fault > > > > > I added a bug to the tracker for this > > > > > (http://tracker.newdream.net/issues/1545). It shouldn't crash the way > > > > > you > > > > > ran it, but if you're trying to remove a snapshot you need to use the > > > > > 'snap rm' command, i.e.: > > > > > $ rbd snap rm --snap=2011091601 test > > > > > -- > > > > > To unsubscribe from this list: send the line "unsubscribe ceph-devel" > > > > > in > > > > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > > > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > > -- > > > > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > > > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > -- > > > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > > > > > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > > -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
