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On 11/09/2011 11:29 AM, Xu He Jie wrote:
<blockquote cite="mid:4EB9F382.8030006@linux.vnet.ibm.com"
type="cite">于 2011年11月09日 11:05, Osier Yang 写道:
<br>
<blockquote type="cite">On 11/09/2011 10:34 AM, Xu He Jie wrote:
<br>
<blockquote type="cite">于 2011年11月09日 07:08, Eric Blake 写道:
<br>
<blockquote type="cite">On 11/08/2011 12:16 AM, Xu He Jie
wrote:
<br>
<blockquote type="cite">As the description of removing CDROM
media from
<br>
<a class="moz-txt-link-freetext" href="http://wiki.libvirt.org/page/QEMUSwitchToLibvirt#eject_DEV">http://wiki.libvirt.org/page/QEMUSwitchToLibvirt#eject_DEV</a>
<br>
</blockquote>
<br>
Hmm.
<br>
virsh attach-disk --type cdrom --mode readonly myguest ""
hdc
<br>
might look a bit nicer as:
<br>
virsh attach-disk --type cdrom --mode readonly myguest
--target hdc
<br>
except that we marked --source as a required argument, so we
have to provide something even when there is no real source.
So I agree that we need your patch at a bare minimum to
support this documented command line for adding a cdrom
drive without a disk.
<br>
</blockquote>
Is there any other method of removing media from cdrom? I try
with:
<br>
detach-disk myguest hdc
<br>
</blockquote>
<br>
This will detach the CD drive from guest, for just removing the
media,
<br>
"update-device $domain xml" with the source path removed in the
xml
<br>
will work.
<br>
<br>
We planned to add some new virsh commands such as
"insert-media",
<br>
"eject-media" before to do the work, as "update-device" is not
quite
<br>
visiable, and question like this are frequent in upstream, but
unfortunately,
<br>
it's not implemented yet.
<br>
</blockquote>
I understood, thanks.
<br>
<blockquote type="cite">
<br>
<blockquote type="cite">It told me: 'unsupported configuration:
device type 'disk' cannot be detached'
<br>
</blockquote>
<br>
Is this the exact error you saw, it's weried if a device of type
disk can't be
<br>
detached. The error expected should be something like:
<br>
<br>
"unsupported configuration: device type of 'cdrom' cannot be
detached"
<br>
<br>
</blockquote>
Yes, the xml as below:
<br>
<disk type='block' device='cdrom'>
<br>
<driver name='qemu' type='raw'/>
<br>
<target dev='hdc' bus='ide'/>
<br>
<readonly/>
<br>
<address type='drive' controller='0' bus='1' unit='0'/>
<br>
</disk>
<br>
<br>
the command as below:
<br>
virsh # detach-disk ubuntu-test-vm1 hdc
<br>
错误： Failed to detach disk
<br>
错误： unsupported configuration: device type 'disk' cannot be
detached
<br>
</blockquote>
<br>
I see, there is a bug here. This patch fixed it.<br>
<br>
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<a
href="http://www.redhat.com/archives/libvir-list/2011-November/msg00355.html">http://www.redhat.com/archives/libvir-list/2011-November/msg00355.html</a><br>
<br>
Osier<br>
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