Bug #3769
on KVM node live migrate should not start if there are disks with attribute CACHE!=none
| Status: | Closed | Start date: | 04/21/2015 | |
|---|---|---|---|---|
| Priority: | Normal | Due date: | ||
| Assignee: | - | % Done: | 0% | |
| Category: | Core & System | |||
| Target version: | - | |||
| Resolution: | worksforme | Pull request: | ||
| Affected Versions: | OpenNebula 4.10, OpenNebula 4.12 |
Description
Live migrate should be disabled at least for KVM node if there are disks attached to VM with CACHE!=none
Here is the log:
Tue Apr 21 13:13:35 2015 [Z0][DiM][D]: Live-migrating VM 5 Tue Apr 21 13:13:35 2015 [Z0][ReM][D]: Req:3616 UID:0 VirtualMachineMigrate result SUCCESS, 5 Tue Apr 21 13:13:35 2015 [Z0][ReM][D]: Req:9920 UID:0 VirtualMachineInfo invoked , 5 Tue Apr 21 13:13:35 2015 [Z0][ReM][D]: Req:9920 UID:0 VirtualMachineInfo result SUCCESS, "<VM><ID>5</ID><UID>0..." Tue Apr 21 13:13:37 2015 [Z0][ImM][I]: --Mark-- Tue Apr 21 13:13:38 2015 [Z0][VMM][D]: Message received: LOG I 5 Successfully execute transfer manager driver operation: tm_premigrate. Tue Apr 21 13:13:38 2015 [Z0][VMM][D]: Message received: LOG I 5 ExitCode: 0 Tue Apr 21 13:13:38 2015 [Z0][VMM][D]: Message received: LOG I 5 Successfully execute network driver operation: pre. Tue Apr 21 13:13:39 2015 [Z0][VMM][D]: Message received: LOG I 5 Command execution fail: /var/tmp/one/vmm/kvm/migrate 'one-5' 's05' 's06' 5 s06 Tue Apr 21 13:13:39 2015 [Z0][VMM][D]: Message received: LOG E 5 migrate: Command "virsh --connect qemu:///system migrate --live one-5 qemu+ssh://s05/system" failed: error: Unsafe migration: Migration may lead to data corruption if disks use cache != none Tue Apr 21 13:13:39 2015 [Z0][VMM][D]: Message received: LOG E 5 Could not migrate one-5 to s05 Tue Apr 21 13:13:39 2015 [Z0][VMM][D]: Message received: LOG I 5 ExitCode: 1 Tue Apr 21 13:13:39 2015 [Z0][VMM][D]: Message received: LOG I 5 Failed to execute virtualization driver operation: migrate.
ps. I am marking this as 'Core & System' because I do not know how to define that both shell and sunstone should be fixed
History
#1
Updated by Carlo Daffara about 6 years ago
For kvm, if a clustered file system is used, all cache modes support live migration. For example, see here:
https://www.suse.com/documentation/sles11/book_kvm/data/sect1_4_chapter_book_kvm.html
#2
Updated by Anton Todorov about 6 years ago
Thank you for the answer
Missed this part of the documentation too:
[[http://docs.opennebula.org/4.12/administration/virtualization/kvmg.html#considerations-limitations]]
I do realize that there are too many libvirt versions on the different OSes and it is hard to detect when to rise alert or no.
I think the issue should be closed.
#3
Updated by Ruben S. Montero about 6 years ago
- Status changed from Pending to Closed
- Resolution set to worksforme