On Tue, Jun 06, 2017 at 10:19:32AM -0400, Michael C. Cambria wrote:
Using qemu installed from source, I decided to try to create a VM. It
worked. I cut/pasted a script I used to create a centos72 VM, renamed
the name and cut the disk size down:
$ cat debug-centos.sh
#/bin/bash
sudo virt-install -n dbgcent72 \
--ram=4096 \
--vcpus 2 \
--disk path=/dev/vg_guest_images/dbgcent72,device=disk,size=5 \
--description "Centos 7.2 64Bit" \
--network bridge:brguest0,model=e1000 \
--cdrom /home/mcc/Downloads/CentOS-7-x86_64-DVD-1511.iso \
--vnc \
--noautoconsole \
--hvm \
--os-type=linux \
--os-variant centos7.0 \
--video=vmvga
$ ./debug-centos.sh
Starting install...
Domain installation still in progress. You can reconnect to
the console to complete the installation process.
$ sudo virsh list --all
Id Name State
----------------------------------------------------
1 dbgcent72 running
The xml is placed next to the xml for all the other VM's that don't seem
to be found:
# pwd
/etc/libvirt/qemu
# ls -al
total 80
drwx------. 3 root root 4096 Jun 6 09:36 .
drwx------. 5 root root 4096 Jun 6 08:38 ..
-rw-------. 1 root root 3870 Jun 6 09:36 dbgcent72.xml
-rw-------. 1 root root 3853 Jun 14 2016 dcos-bp.xml
-rw-------. 1 root root 3551 Mar 21 2015 fbsd100.xml
-rw-------. 1 root root 3273 Mar 23 2015 fbsd101.xml
-rw-------. 1 root root 3867 Feb 21 2015 fedora20.xml
drwx------. 3 root root 4096 May 10 18:08 networks
-rw-------. 1 root root 3510 Oct 11 2015 u1404s.xml
-rw-------. 1 root root 5017 Oct 11 2015 u1404.xml
-rw-------. 1 root root 3507 Jun 5 19:33 wheezy.xml
-rw-------. 1 root root 3489 Feb 21 2015 win7.xml
Well, in this case, even though you should not do that, normally, you can do the following. Backup your XMLs from this folder, and then try feeding them to libvirt using 'virsh define /path/to/the/backup.xml'. It is "essentially" what is happening when libvirt is starting, so it will tell you why they cannot be loaded. If they can, then compare the output of 'virsh dumpxml $domain' to the backup XML and if it is the same, then you restored your machines. But that's very unlikely to happen, because that'd mean I have no idea there's a codepath that could fail. Hopefully this will at least give us some more info about where to look for the source of the problem. Martin
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