[libvirt-users] migrate local storage to ceph | exchanging the storage system
TLDR: Why is virsh migrate --persistent --live domain
qemu+ssh://root@host/system --xml domain.ceph.xml
not persistent and what could i do about it?
Hi,
after years of beeing pleased with local storage and migrating the
complete storage from one host to another, it was time for ceph.
After setting up a cluster and testing it, its time now for moving a lot
of VMs on that type of storage, without a disturbance if possible.
So I 'virsh dumpxml domain > domain.ceph.xml', edit the file, replace
// ---- old ---- //
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2' cache='none'/>
<source file='domain.img'/>
<backingStore/>
<target dev='vda' bus='virtio'/>
<alias name='virtio-disk0'/>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x04'
function='0x0'/>
</disk>
// ---- with new ---- //
<disk type='network' device='disk'>
<driver name='qemu' type='raw'/>
<auth username='libvirt'>
<secret type='ceph'
uuid='53e4ba03-5ad0-4f1e-b69e-897afba272ff'/>
</auth>
<source protocol='rbd' name='libvirt/domain'>
<host name='cephmon0' port='6789'/>
<host name='cephmon1' port='6789'/>
<host name='cephmon2' port='6789'/>
</source>
<backingStore/>
<target dev='vda' bus='virtio'/>
<boot order='1'/>
<alias name='virtio-disk0'/>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x04'
function='0x0'/>
</disk>
Now i'm calling:
root@host_a:~# virsh migrate --verbose --p2p --copy-storage-all
--persistent --change-protection --abort-on-error --undefinesource
--live domain qemu+ssh://root@host_b/system --xml domain.ceph.xml
This takes its time to copy everything into ceph, but when its over, i
never have to migrate Terabytes of Storage again.
But its not over.
The new domain definition on host_b is not persistent and after a
shutdown, local storage is used again.
What do i have todo, to make this change persistent, or is there a
better way for doing this?
(i am using libvirt 1.2.9)
Thanks in advance
Björn Lässig
--
Pengutronix e.K. | |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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