When cloning the snapshot on the remote cluster I can't see my ext4 filesystem. Using the same exact snapshot on both sides. Shouldn't this be consistent? Primary Site root@Ccscephtest1:~# rbd snap ls --all CephTestPool1/vm-100-disk-0 | grep TestSnapper1 10621 TestSnapper1 2 TiB Thu Jan 21 08:15:22 2021 user root@Ccscephtest1:~# rbd clone CephTestPool1/vm-100-disk-0@TestSnapper1 CephTestPool1/vm-100-disk-0-CLONE root@Ccscephtest1:~# rbd-nbd map CephTestPool1/vm-100-disk-0-CLONE --id admin --keyring /etc/ceph/ceph.client.admin.keyring /dev/nbd0 root@Ccscephtest1:~# mount /dev/nbd0 /usr2 Secondary Site root@Bunkcephtest1:~# rbd snap ls --all CephTestPool1/vm-100-disk-0 | grep TestSnapper1 10430 TestSnapper1 2 TiB Thu Jan 21 08:20:08 2021 user root@Bunkcephtest1:~# rbd clone CephTestPool1/vm-100-disk-0@TestSnapper1 CephTestPool1/vm-100-disk-0-CLONE root@Bunkcephtest1:~# rbd-nbd map CephTestPool1/vm-100-disk-0-CLONE --id admin --keyring /etc/ceph/ceph.client.admin.keyring /dev/nbd0 root@Bunkcephtest1:~# mount /dev/nbd0 /usr2 mount: /usr2: wrong fs type, bad option, bad superblock on /dev/nbd0, missing codepage or helper program, or other error. From: "adamb" <adamb@xxxxxxxxxx> To: "dillaman" <dillaman@xxxxxxxxxx> Cc: "Eugen Block" <eblock@xxxxxx>, "ceph-users" <ceph-users@xxxxxxx>, "Matt Wilder" <matt.wilder@xxxxxxxxxx> Sent: Wednesday, January 20, 2021 3:42:46 PM Subject: Re: Re: RBD-Mirror Snapshot Backup Image Uses Awesome information. I new I had to be missing something. All of my clients will be far newer than mimic so I don't think that will be an issue. Added the following to my ceph.conf on both clusters. rbd_default_clone_format = 2 root@Bunkcephmon2:~# rbd clone CephTestPool1/vm-100-disk-0@TestSnapper1 CephTestPool2/vm-100-disk-0-CLONE root@Bunkcephmon2:~# rbd ls CephTestPool2 vm-100-disk-0-CLONE I am sure I will be back with more questions. Hoping to replace our Nimble storage with Ceph and NVMe. Appreciate it! From: "Jason Dillaman" <jdillama@xxxxxxxxxx> To: "adamb" <adamb@xxxxxxxxxx> Cc: "Eugen Block" <eblock@xxxxxx>, "ceph-users" <ceph-users@xxxxxxx>, "Matt Wilder" <matt.wilder@xxxxxxxxxx> Sent: Wednesday, January 20, 2021 3:28:39 PM Subject: Re: Re: RBD-Mirror Snapshot Backup Image Uses On Wed, Jan 20, 2021 at 3:10 PM Adam Boyhan <adamb@xxxxxxxxxx> wrote: > > That's what I though as well, specially based on this. > > > > Note > > You may clone a snapshot from one pool to an image in another pool. For example, you may maintain read-only images and snapshots as templates in one pool, and writeable clones in another pool. > > root@Bunkcephmon2:~# rbd clone CephTestPool1/vm-100-disk-0@TestSnapper1 CephTestPool2/vm-100-disk-0-CLONE > 2021-01-20T15:06:35.854-0500 7fb889ffb700 -1 librbd::image::CloneRequest: 0x55c7cf8417f0 validate_parent: parent snapshot must be protected > > root@Bunkcephmon2:~# rbd snap protect CephTestPool1/vm-100-disk-0@TestSnapper1 > rbd: protecting snap failed: (30) Read-only file system You have two options: (1) protect the snapshot on the primary image so that the protection status replicates or (2) utilize RBD clone v2 which doesn't require protection but does require Mimic or later clients [1]. > > From: "Eugen Block" <eblock@xxxxxx> > To: "adamb" <adamb@xxxxxxxxxx> > Cc: "ceph-users" <ceph-users@xxxxxxx>, "Matt Wilder" <matt.wilder@xxxxxxxxxx> > Sent: Wednesday, January 20, 2021 3:00:54 PM > Subject: Re: Re: RBD-Mirror Snapshot Backup Image Uses > > But you should be able to clone the mirrored snapshot on the remote > cluster even though it’s not protected, IIRC. > > > Zitat von Adam Boyhan <adamb@xxxxxxxxxx>: > > > Two separate 4 node clusters with 10 OSD's in each node. Micron 9300 > > NVMe's are the OSD drives. Heavily based on the Micron/Supermicro > > white papers. > > > > When I attempt to protect the snapshot on a remote image, it errors > > with read only. > > > > root@Bunkcephmon2:~# rbd snap protect > > CephTestPool1/vm-100-disk-0@TestSnapper1 > > rbd: protecting snap failed: (30) Read-only file system > > _______________________________________________ > > ceph-users mailing list -- ceph-users@xxxxxxx > > To unsubscribe send an email to ceph-users-leave@xxxxxxx > _______________________________________________ > ceph-users mailing list -- ceph-users@xxxxxxx > To unsubscribe send an email to ceph-users-leave@xxxxxxx [1] https://ceph.io/community/new-mimic-simplified-rbd-image-cloning/ -- Jason _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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