[SOLVED] Openvz container live migration from cli

L

liska_

Member
Nov 19, 2013
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Hi,
as I can not login to gui for few days on either server (no HA) I would like to try migrate containers to second node and reboot first one. I was searching on this forum but I am unable to find proper command. I have just found that I should use pvectl insted of vzmigrate but I have not found on forum or man pages any hint, how to live migrate containers. They are stored on nfs shared storage.

Thanks a lot for any advice.
 
Last edited:
hi just type
"man pvectl" and scroll down, you'll find this section:

pvectl migrate <vmid> <target> [OPTIONS]

Migrate the container to another node. Creates a new migration task.

<vmid> integer (1 - N)

The (unique) ID of the VM.

<target> string

Target node.

-online boolean

Use online/live migration.
 
Ah, i was looking at vzctl insted of pvectl, my mistake.
Now I have all containers migrated, but there were problem with some nfs stat. I had to manually start two containers after migration with command pvectl start id.

Mar 25 11:16:55 Error: undump failed: No such file or directory
Mar 25 11:16:55 Restoring failed:
Mar 25 11:16:55 Error: rst_open_file: failed to lookup path '/tmp/.nfs000000000004fc6100002282': -2
Mar 25 11:16:55 Error: can't open file /tmp/.nfs000000000004fc6100002282
Mar 25 11:16:55 Error: rst_file: -2 99184
Mar 25 11:16:55 Error: rst_files: -2
Mar 25 11:16:55 Error: make_baby: -2
Mar 25 11:16:55 Error: rst_clone_children
Mar 25 11:16:55 Error: make_baby: -2
Mar 25 11:16:55 Error: rst_clone_children
Mar 25 11:16:55 Error: make_baby: -2
Mar 25 11:16:55 Error: rst_clone_children
Mar 25 11:16:55 Container is unmounted
Mar 25 11:16:55 ERROR: online migrate failure - Failed to restore container: Container start failed
Mar 25 11:16:55 start final cleanup
Mar 25 11:16:55 ERROR: migration finished with problems (duration 00:00:39)
migration problems
 
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