Live Migration not happening in proxmox

[Sujith Arangan]

Hello All,

I have installed Proxmox VE 5.1.3. I have created 4 other VE servers and clustered successfully. But when I try to do the live migration, It fails. The following is the error code I get

2018-01-15 21:19:34 starting migration of VM 101 to node 'r3' (10.10.5.1)
2018-01-15 21:19:34 found local disk 'local-lvm:vm-101-disk-1' (in current VM config)
2018-01-15 21:19:34 found local disk 'local:iso/CentOS-7-x86_64-Minimal-1708.iso' (in current VM config)
2018-01-15 21:19:34 can't migrate local disk 'local-lvm:vm-101-disk-1': can't live migrate attached local disks without with-local-disks option
2018-01-15 21:19:34 can't migrate local disk 'local:iso/CentOS-7-x86_64-Minimal-1708.iso': can't live migrate attached local disks without with-local-disks option
2018-01-15 21:19:34 ERROR: Failed to sync data - can't migrate VM - check log
2018-01-15 21:19:34 aborting phase 1 - cleanup resources
2018-01-15 21:19:34 ERROR: migration aborted (duration 00:00:00): Failed to sync data - can't migrate VM - check log
TASK ERROR: migration aborted

 

[tom]

> can't migrate local disk

you cannot migrate a VM with local disks.

Please see this comparison about available shared storage solutions:

https://pve.proxmox.com/wiki/Storage

 

[Sujith Arangan]

Hi Tom,

Thank you for your reply. So, If I configure an NFS storage for all the nodes in a common manner, Will the live migration work then?

 

[tom]

Yes, if you have your virtual disks on NFS, live migration will work.

 

[fireon]

Hi Tom,

Thank you for your reply. So, If I configure an NFS storage for all the nodes in a common manner, Will the live migration work then?

Central Storage, 10Gbit recommended at production.

 

[Sujith Arangan]

Central Storage, 10Gbit recommended at production.

As snapshots are not supported in NFS, I am planning to implement ZFS. Can you share any document?

 

[Helmo]

I'm not sure about the iso image, but local LVM disks can be live migrated.

It's CLI only at the moment though, see https://forum.proxmox.com/threads/live-migration-with-local-directories.30443/

 

[fireon]

I'm not sure about the iso image, but local LVM disks can be live migrated.
It's CLI only at the moment though, see https://forum.proxmox.com/threads/live-migration-with-local-directories.30443/

ZFS too, but this is not stable at the moment.

 

[fireon]

As snapshots are not supported in NFS

Is supported, but i've read that sometimes if you rollback a snapshot, that qcow2 are damaged... so maybe NFS and snapshots is not the best idea.

Local ZFS and local LVM-Thin Snapshots are fast and stable.

 

[NiSv]

Please note, it is the local DVD, mounted as 'local:iso/CentOS-7-x86_64-Minimal-1708.iso' that is the blocking factor, just unmount it inside the guest, and then remove it from the Hardware->CD/DVD settings in the Proxmox controle center.
Then it should be possible to migrate.
-
Or at lease, if you are dooing from in a console on the host (and not the graphical interface in proxmox). Here, I am migrating guest108 from the console on server9 to server8:
qm migrate 108 server8 --online --with-local-disks --migration_type insecure

 

[Sujith Arangan]

Hello Nisv,

Does that command really work? Because in that command the source and destination is not mentioned

 

[Helmo]

In NiSv's example 108 is the vm number from which the source can be derived, and server8 is the name of the destination server.

 

[joblack]

As snapshots are not supported in NFS, I am planning to implement ZFS. Can you share any document?

Snapshots work on NFS with the qcow2 format.

 

[Sujith Arangan]

Snapshots work on NFS with the qcow2 format.

Thank you