[Libvir] [PATCH] Have xenDaemonDetachDevice() remove device configuration

John Levon levon at movementarian.org
Wed Apr 9 11:59:38 UTC 2008

On Wed, Apr 09, 2008 at 11:52:07AM +0100, Richard W.M. Jones wrote:

> On Tue, Apr 08, 2008 at 01:06:12PM -0700, Ryan Scott wrote:
> > When a user runs 'virsh detach-disk' on a running domain, the disk is 
> > removed, but reappears after the domain is rebooted.  This seems odd, as 
> > someone who types detach-disk most likely wants the change to be permanent.
> Actually I wonder what the expectation is.
> The QEMU driver only implements a very limited form of the
> virDomainAttachDevice call (merely allowing you to signal that the
> CD-ROM has been replaced) and doesn't implement virDomainDetachDevice
> at all, so there is no example to go on there.
> Maybe better to document what the behaviour is supposed to be in
> src/libvirt.c?  After all you can effect a permanent change to the
> device configuration by using virDomainDefineXML.

Please think of the poor user. Dumping the XML, editing it by hand, and
feeding it back in barely a user interface at all. virsh detach-disk is.

(And yes, I would expect detach-disk to do exactly that, permanently.)


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