[libvirt] iscsi support?

[Dave Allan]

On Thu, Jul 15, 2010 at 11:11:40AM +0200, Harald Dunkel wrote:
> Hi Dave,
> 
> Sorry for the delay. See below
> 
> On 07/12/10 20:23, Dave Allan wrote:
> >
> > Hi Harri,
> >
> > I spun up a Debian testing box with the versions of libvirt, iet&
> > open-iscsi that you're using, and it works fine for me.  My pool xml
> > is:
> >
> > <pool type="iscsi">
> >    <name>iscsitest</name>
> >    <source>
> >      <host name="localhost"/>
> >      <device path="iqn.2001-04.com.example:foobarbaz"/>
> >    </source>
> >    <target>
> >      <path>/dev/disk/by-path</path>
> >    </target>
> > </pool>
> >
> > Gives the 3 configured LUs as volumes:
> >
> > Name                 Path
> > -----------------------------------------
> > 3.0.0.0              /dev/disk/by-path/ip-127.0.0.1:3260-iscsi-iqn.2001-04.com.example:foobarbaz-lun-0
> > 3.0.0.1              /dev/disk/by-path/ip-127.0.0.1:3260-iscsi-iqn.2001-04.com.example:foobarbaz-lun-1
> > 3.0.0.2              /dev/disk/by-path/ip-127.0.0.1:3260-iscsi-iqn.2001-04.com.example:foobarbaz-lun-2
> >
> 
> In my environment the new volume is not listed by virsh
> vol-list, even though /dev/disk/by-path shows the iscsi
> block devices:
> 
> # virsh vol-list --pool iscsi.dpcl064
> Name                 Path
> -----------------------------------------
> 
> # ls -al /dev/disk/by-path/
> total 0
> drwxr-xr-x 2 root root 320 Jul 15 10:56 .
> drwxr-xr-x 6 root root 120 Jul 15  2010 ..
> lrwxrwxrwx 1 root root   9 Jul 15 10:56 ip-172.19.97.183:3260-iscsi-iqn.2010-07.de.aixigo.ac.dpcl064:storage-lun-0 -> ../../sdd
> lrwxrwxrwx 1 root root  10 Jul 15 10:56 ip-172.19.97.183:3260-iscsi-iqn.2010-07.de.aixigo.ac.dpcl064:storage-lun-0-part1 -> ../../sdd1
> lrwxrwxrwx 1 root root  10 Jul 15 10:56 ip-172.19.97.183:3260-iscsi-iqn.2010-07.de.aixigo.ac.dpcl064:storage-lun-0-part2 -> ../../sdd2
> lrwxrwxrwx 1 root root   9 Jul 15 09:32 pci-0000:00:03.0-usb-0:2:1.0-scsi-0:0:0:0 -> ../../sdc
> lrwxrwxrwx 1 root root   9 Jul 15 09:33 pci-0000:01:0e.0-scsi-0:0:0:0 -> ../../sda
> :
> :
> 
> The virt-manager GUI knows about the defined iscsi volume,
> so I would guess this is just a minor bug in virsh.

I set up a debian testing box with the same versions of the software
you have, and I don't see any problems.  Virsh displays the voumes
correctly, so I don't think this is a bug.

Virsh and virt-manager get their information from the same source.  If
you're seeing a difference in the volume listing, then you're very
likely looking at two different pools.  Can you post the output of

virsh pool-dumpxml iscsi.dpcl064

Dave