Bug#857916: linux-image-4.9.0-2-amd64: btrfs modifying wrong mount point data upon new mount

[Philipp Marek <philipp.marek@linbit.com>]

Hi Ben,

thank you for the quick answer!


> btrfs includes its own logical volume management and can spread a
> filesystem across multiple devices, so in general it has to use UUIDs
> to find the devices for a filesytem.
Still it shouldn't change the block device name for a mounted filesystem.

> I agree that this interacts poorly with block-level snapshot
> mechanisms.  If you want to have multiple versions of a btrfs
> filesystem, I think you have to use btrfs snapshots.
Yeah, but that is incompatible with DRBD replication (which works on the 
level below).