Enable more than one block device in VM

[marmarek]

Reported by marmarek on 16 Jan 2012 11:59 UTC
To make possible attaching eg two pendrives.
Perhaps using ConsoleKit/PolicyKit it is already done. But needs testing.

If not needed - perhaps also remove /mnt/removable fstab entry.

Migrated-From: https://wiki.qubes-os.org/ticket/419

[marmarek]

Comment by joanna on 18 Jan 2012 13:50 UTC
I just verified that one can remove:

/dev/xvdi   /mnt/removable  auto noauto,user,rw 0 0

line from fstab, and qvm-block attach still works fine.

But an attempt to attach more than one device causes this:

[~](joanna@dom0)$ qvm-block -a dom0:sdd personal
Traceback (most recent call last):
  File "/usr/bin/qvm-block", line 114, in <module>
    main()
  File "/usr/bin/qvm-block", line 81, in main
    block_attach(vm, backend_vm, dev['device'], **kwargs)
  File "/usr/lib64/python2.6/site-packages/qubes/qubesutils.py", line 203, in block_attach
    raise QubesException("Frontend %s busy in VM %s, detach it first" % (frontend, vm.name))
qubes.qubes.QubesException: Frontend xvdi busy in VM personal, detach it first

[marmarek]

Comment by joanna on 18 Jan 2012 13:50 UTC
I just verified that one can remove:

/dev/xvdi   /mnt/removable  auto noauto,user,rw 0 0

line from fstab, and qvm-block attach still works fine.

But an attempt to attach more than one device causes this:

[~](joanna@dom0)$ qvm-block -a dom0:sdd personal
Traceback (most recent call last):
  File "/usr/bin/qvm-block", line 114, in <module>
    main()
  File "/usr/bin/qvm-block", line 81, in main
    block_attach(vm, backend_vm, dev['device'], **kwargs)
  File "/usr/lib64/python2.6/site-packages/qubes/qubesutils.py", line 203, in block_attach
    raise QubesException("Frontend %s busy in VM %s, detach it first" % (frontend, vm.name))
qubes.qubes.QubesException: Frontend xvdi busy in VM personal, detach it first

[marmarek]

Modified by joanna on 18 Jan 2012 14:05 UTC

[marmarek]

Modified by joanna on 18 Jan 2012 14:05 UTC

[marmarek]

Comment by marmarek on 18 Jan 2012 14:06 UTC
Currently qvm-block don't automatically choose block front device. You can use -f option to do this.

Because there is no need to use always xvdi (as you said above), qvm-block can choose any device name.

[marmarek]

Comment by marmarek on 18 Jan 2012 14:06 UTC
Currently qvm-block don't automatically choose block front device. You can use -f option to do this.

Because there is no need to use always xvdi (as you said above), qvm-block can choose any device name.

[marmarek]

Comment by marmarek on 14 Feb 2012 19:59 UTC
http://git.qubes-os.org/gitweb/?p=marmarek/core.git;a=commit;h=05e89d82fb74957eef661b690e6ee392bcdb08ec

[marmarek]

Comment by marmarek on 14 Feb 2012 19:59 UTC
http://git.qubes-os.org/gitweb/?p=marmarek/core.git;a=commit;h=05e89d82fb74957eef661b690e6ee392bcdb08ec