On Sun, Apr 11, 2021 at 12:10:34PM +0500, Roman Mamedov wrote: > On Sat, 10 Apr 2021 17:06:22 -0600 > Chris Murphy <li...@colorremedies.com> wrote: > > > Right. The block device (partition containing the Btrfs file system) > > must be exclusively used by one kernel, host or guest. Dom0 or DomU. > > Can't be both. > > > > The only exception I'm aware of is virtiofs or virtio-9p, but I > > haven't messed with that stuff yet. > > If you want an FS that allows a block device to be mounted by multiple > machines > at the same time, there are a few: > https://en.wikipedia.org/wiki/Clustered_file_system#Shared-disk_file_system
All of those use some kind of lock manager, though. So in no case you just mount the same device twice. -- ⢀⣴⠾⠻⢶⣦⠀ .--[ Makefile ] ⣾⠁⢠⠒⠀⣿⡁ # beware of races ⢿⡄⠘⠷⠚⠋⠀ all: pillage burn ⠈⠳⣄⠀⠀⠀⠀ `----
