[linux-lvm] Guest os running with lvm under xen (lvm-backed vbd)
Achievement
achievement.hk at hotmail.com
Thu Aug 23 08:37:55 UTC 2007
Dear All,
I've installed CentOS5 and configured the system with Xen+LVM
All guest domain are installed in logical volume, lvm-backed vbd.
and the guest domain will also use lvm too.
My example.
1. Install centos5 with software raid (raid 1)
2. create pv, vg, lv on the md device
3. install guest domain (centos5) in one of the lv '/dev/VolGroup00/xen2vbd1'
4. the guest domain also use lvm, vg 'Xen1Vbd1VG00' created within the guest domain.
I can get the guest domain up and run correctly.
and able to clone the guest domain by adding new lv and using dd
dd if=/dev/VolGroup00/xen2vbd1 of=/dev/VolGroup00/xen2vbd2
Then, i have several guest domain with same data.
After several add/delete action of the lv under domain-0 for testing and cloning guest domain.
I got the following error:
[root at xen2 ~]# pvs
Couldn't find device with uuid '0gmklZ-HcGJ-Asv1-pkQz-guhK-bbY4-MJ24nq'.
Couldn't find device with uuid '0gmklZ-HcGJ-Asv1-pkQz-guhK-bbY4-MJ24nq'.
Segmentation fault
[root at xen2 ~]# lvs
Couldn't find device with uuid '0gmklZ-HcGJ-Asv1-pkQz-guhK-bbY4-MJ24nq'.
Couldn't find all physical volumes for volume group Xen1Vbd1VG00.
Couldn't find device with uuid '0gmklZ-HcGJ-Asv1-pkQz-guhK-bbY4-MJ24nq'.
Couldn't find all physical volumes for volume group Xen1Vbd1VG00.
Volume group "Xen1Vbd1VG00" not found
LV VG Attr LSize Origin Snap% Move Log Copy%
LogVol00 VolGroup00 -wi-ao 14.62G
xen2vbd1 VolGroup00 -wi-a- 8.00G
xen2vbd2 VolGroup00 -wi-a- 8.00G
Any one face the similar error? and why lvm see the logical volume as a physical volumes?
or I should not use lvm in guest domain if i use lvm-backed vbd for xen?
Thanks.
Achievement
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