Re: [libvirt] [PATCH 4/4] virsh: Add document for cmdChangeMedia
On 02/03/2012 02:23 AM, Osier Yang wrote:
---
tools/virsh.pod | 25 +++++++++++++++++++++++++
1 files changed, 25 insertions(+), 0 deletions(-)
diff --git a/tools/virsh.pod b/tools/virsh.pod
index 28ad422..6ac7d15 100644
--- a/tools/virsh.pod
+++ b/tools/virsh.pod
@@ -1475,6 +1475,31 @@ option can be used to force device update, e.g., to eject a CD-ROM
even if it
is locked/mounted in the domain. See the documentation to learn about libvirt
XML format for a device.
+=item B<change-media> I<domain-id> I<target> [I<source>]
[I<--eject>]
+[I<--insert>] [I<--update>] [I<--current>] [I<--live>]
[I<--config>]
+[I<--force>]
Given the source code, I think this should be:
=item B<change-media> I<domain-id> I<target>
{I<--insert> | I<--update> | I<--eject>} [I<source>]
[I<--force>]
[[I<--live>] [I<--config>] | [I<--current>]]
+
+Change media of CDROM or floppy drive. I<target> is the unique target name
+(<target dev='name'/>) of the device.
It would be nice if we could also recognize existing source file name.
That is, if 'vda' has /path/to/disk1, and I am about to change it to
/path/to/disk2, I think that both of these commands should work:
virsh change-media dom --update /path/to/disk1 /path/to/disk2
virsh change-media dom --update vda /path/to/disk2
I<source> specifies the path of the media
+to be inserted or updated.
+
+I<--eject> indicates the media will be ejected.
+I<--insert> indicates the media will be inserted. I<source> must be
specified.
+If the device has source (e.g. <source file='media'>), and I<source>
is not
+specified, I<--update> is equal to I<--eject>. If the device has no source,
+and I<source> is specified, I<--update> is equal to I<--insert>. If
the device
+has source, and I<source> is specified, I<--update> behaves like
combination
+of I<--eject> and I<--insert>.
Is there any reason why we require exactly one of
--insert/--update/--eject, or could we make the command automatically
assume --update if none of the three flags were given? Less typing is
nicer.
+If I<--live> is specified, alter live configuration of running
guest.
+If I<--config> is specified, alter persistent configuration, effect observed
+on next boot.
+I<--current> can be either or both of I<live> and I<config>, depends
on
+the hypervisor's implementation.
+Both I<--live> and I<--config> flags may be given, but I<--current>
is
+exclusive. If no flag is specified, behavior is different depending
+on hypervisor.
+The I<--force> option can be used to force media changing.
+
=back
=head1 NODEDEV COMMANDS
--
Eric Blake eblake(a)redhat.com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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