[SOLVED] "Can't live migrate VM with local cloudinit disk" but cloudinit is on cluster storage

[JamesT]

I suspect that cluster storage which is the same on each node, is not defined as "shared storage", which would be a central storage that each node connects to and shares.

However, why can the migration be done with pool1:vm-101-disk-3 but not with pool1:vm-101-cloudinit ?

Thanks in advance.

 

[fiona]

Hi,

I suspect that cluster storage which is the same on each node, is not defined as "shared storage", which would be a central storage that each node connects to and shares.

Yes, you are correct.

However, why can the migration be done with pool1:vm-101-disk-3 but not with pool1:vm-101-cloudinit ?

Because cloud-init disks need to be handled differently, because they are generated, and in it the context of live-migration this was simply not implemented. But it is now thanks to @mira, so this will be possible in a future version.

 

[JamesT]

Thanks Fabian.

 

[rocketlab]

@fiona i have the following issue related only to cloud-init drives.

I want to migrate a VM while storage type is differ on a destination and it works perfect with other drives. But Cloud-init failed to migrate.

2024-09-03 10:16:52 ERROR: storage migration for 'znv1:vm-142-cloudinit' to storage 'data1' failed - cannot migrate from storage type 'zfspool' to 'lvmthin'
2024-09-03 10:16:52 aborting phase 1 - cleanup resources
2024-09-03 10:16:52 ERROR: migration aborted (duration 00:00:01): storage migration for 'znv1:vm-142-cloudinit' to storage 'data1' failed - cannot migrate from storage type 'zfspool' to 'lvmthin'

 

[fiona]

Hi,

@fiona i have the following issue related only to cloud-init drives.

I want to migrate a VM while storage type is differ on a destination and it works perfect with other drives. But Cloud-init failed to migrate.

2024-09-03 10:16:52 ERROR: storage migration for 'znv1:vm-142-cloudinit' to storage 'data1' failed - cannot migrate from storage type 'zfspool' to 'lvmthin'
2024-09-03 10:16:52 aborting phase 1 - cleanup resources
2024-09-03 10:16:52 ERROR: migration aborted (duration 00:00:01): storage migration for 'znv1:vm-142-cloudinit' to storage 'data1' failed - cannot migrate from storage type 'zfspool' to 'lvmthin'

certain drives like TPM state and cloud-init are always migrated via our storage layer (live-migration uses QEMU's drive mirror functionality for other disks). However, the ZFS storage plugin currently only supports export/import to/from ZFS. As a workaround, you can use a different storage type for the cloud-init disks.