KVM Gotchas: Difference between revisions
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(Created page with "====Common useful commands for KVM Guests==== KVM LVM error fixes: <pre> WARNING: PV /dev/sda5 in VG dns01-vg is using an old PV header, modify the VG to update. </pre> Fix: <pre> vgck --updatemetadata dns01-vg </pre> Category:Virtualization") |
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====Common useful commands for KVM Guests==== | ====Common useful commands for KVM Guests==== | ||
LVM error fixes: | |||
* not exclusive for KVM, but since I have so many of these VM's thats where I see it a lot. | |||
* commonly happens when do-release-upgrade is run, or when some updates happen to the lvm code. My GUESS is that the metadata contains the lvm version in there somewhere and does not get updated. | |||
* This fix is only for the metadata | |||
<pre> | <pre> | ||
WARNING: PV /dev/sda5 in VG dns01-vg is using an old PV header, modify the VG to update. | WARNING: PV /dev/sda5 in VG dns01-vg is using an old PV header, modify the VG to update. | ||
| Line 8: | Line 13: | ||
<pre> | <pre> | ||
vgck --updatemetadata dns01-vg | vgck --updatemetadata dns01-vg | ||
vgck --updatemetadata <VG Name from warning message> | |||
</pre> | </pre> | ||
== Create new Image == | |||
<pre> | |||
qemu-img create -f qcow2 -o preallocation=metadata FILENAME.qcow2 XXXG | |||
</pre> | |||
[[Category:Virtualization]] | [[Category:Virtualization]] | ||
Latest revision as of 13:06, 5 September 2023
Common useful commands for KVM Guests
LVM error fixes:
- not exclusive for KVM, but since I have so many of these VM's thats where I see it a lot.
- commonly happens when do-release-upgrade is run, or when some updates happen to the lvm code. My GUESS is that the metadata contains the lvm version in there somewhere and does not get updated.
- This fix is only for the metadata
WARNING: PV /dev/sda5 in VG dns01-vg is using an old PV header, modify the VG to update.
Fix:
vgck --updatemetadata dns01-vg vgck --updatemetadata <VG Name from warning message>
Create new Image
qemu-img create -f qcow2 -o preallocation=metadata FILENAME.qcow2 XXXG