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

[Eric Robinson]

Bump.

Anybody have experience with vdo on drbd?


From: drbd-user-bounces at lists.linbit.com <drbd-user-bounces at lists.linbit.com> On Behalf Of Eric Robinson
Sent: Sunday, June 20, 2021 9:21 PM
To: drbd-user at lists.linbit.com
Subject: [DRBD-user] mounting drbd snapshots that contain vdo devices

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?

-Eric





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