[DRBD-user] mounting drbd snapshots that contain vdo devices

Eric Robinson eric.robinson at psmnv.com
Mon Jun 21 04:21:07 CEST 2021

I have a filesystem directly on a drbd disk, and the drbd disk has an LVM volumes as a backing device. It looks like this...

lvm volume
                drbd disk
                                ext4 filesystem

I can snapshot the backing device, mount it, and explore the filesystems.

However, I recently started experimenting with vdo, so now the stack looks like this....

lvm volume
                drbd disk
                                vdo disk
                                                ext4 filesystem

When I snapshot the backing device, I can no longer mount it because it complains that vdo is an unknown filesystem type. Any ideas how I can mount the vdo disk from the snapshot?


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