On 09/13/2016 04:30 PM, Ilya Dryomov wrote: [SNIP] > > Hmm, it could be about whether it is able to do journal replay on > mount. When you mount a snapshot, you get a read-only block device; > when you mount a clone image, you get a read-write block device. > > Let's try this again, suppose image is foo and snapshot is snap: > > # fsfreeze -f /mnt > > # rbd snap create foo@snap > # rbd map foo@snap > /dev/rbd0 > # file -s /dev/rbd0 > # fsck.ext4 -n /dev/rbd0 > # mount /dev/rbd0 /foo > # umount /foo > <full dmesg> > # file -s /dev/rbd0 > # fsck.ext4 -n /dev/rbd0 > > # rbd clone foo@snap bar > $ rbd map bar > /dev/rbd1 > # file -s /dev/rbd1 > # fsck.ext4 -n /dev/rbd1 > # mount /dev/rbd1 /bar > # umount /bar > <full dmesg> > # file -s /dev/rbd1 > # fsck.ext4 -n /dev/rbd1 > > Could you please provide the output for the above? Here you go : http://paste.ubuntu.com/23173721/ [SNIP] _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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