[pve-devel] migration problems since qemu 1.3

[Alexandre DERUMIER]

I have redone tests on my side, with linux and windows guests, vms with 4 - 16GB ram
I really can't reproduce your problem.

migration speed is around 400MB/S.


maybe can you try the last qemu git version ? I see some big migration patchs commited this last days....



----- Mail original ----- 

De: "Stefan Priebe" <s.priebe at profihost.ag> 
À: "Alexandre DERUMIER" <aderumier at odiso.com> 
Cc: pve-devel at pve.proxmox.com, "Dietmar Maurer" <dietmar at proxmox.com> 
Envoyé: Dimanche 23 Décembre 2012 13:38:20 
Objet: Re: [pve-devel] migration problems since qemu 1.3 

Sorry copy & paste error in last example (duration didn't match timestamp). 

Here is a correct output: 
Dec 23 13:21:03 starting migration of VM 105 to node 'cloud1-1202' 
(10.255.0.20) 
Dec 23 13:21:03 copying disk images 
Dec 23 13:21:03 starting VM 105 on remote node 'cloud1-1202' 
Dec 23 13:21:06 starting migration tunnel 
Dec 23 13:21:06 starting online/live migration on port 60000 
Dec 23 13:21:10 migration status: active (transferred 198071629, 
remaining 1097801728), total 4303814656) 
Dec 23 13:21:10 migration xbzrle cachesize: 4294967296 transferred 0 
pages 0 cachemiss 48178 overflow 0 
Dec 23 13:25:23 migration speed: 15.94 MB/s 
Dec 23 13:25:23 migration status: completed 
Dec 23 13:25:26 migration finished successfuly (duration 00:04:23) 
TASK OK 

Stefan 
Am 23.12.2012 13:00, schrieb Stefan Priebe: 
> Hi, 
> 
> removing this patch changes nothing. Strangely if i wait up to 5 minutes 
> the migration suddenly finishes. The VM is unresponsive while migrating 
> and the speed is VERY low. 
> 
> ------------------------------------------------ 
> Dec 23 12:55:47 starting migration of VM 105 to node 'cloud1-1203' 
> (10.255.0.22) 
> Dec 23 12:55:47 copying disk images 
> Dec 23 12:55:47 starting VM 105 on remote node 'cloud1-1203' 
> Dec 23 12:55:50 starting migration tunnel 
> Dec 23 12:55:50 starting online/live migration on port 60000 
> Dec 23 13:00:38 migration speed: 12.93 MB/s 
> Dec 23 13:00:38 migration status: completed 
> Dec 23 13:00:41 migration finished successfuly (duration 00:01:54) 
> TASK OK 
> ------------------------------------------------ 
> 
> Stefan 
> 
> Am 23.12.2012 10:34, schrieb Alexandre DERUMIER: 
>> maybe can you try to recompile pve-qemu-kvm without this patch : 
>> 
>> include fix-off-by-1-error-in-RAM-migration-code.patch 
>> https://git.proxmox.com/?p=pve-qemu-kvm.git;a=commit;h=e01e677960fbc6787f8358543047307fca67facb 
>> 
>> 
>> this come from this git 
>> http://git.qemu.org/?p=qemu.git;a=commit;h=7ec81e56edc2b2007ce0ae3982aa5c18af9546ab 
>> 
>> 
>> 
>> 
>> 
>> 
>> ----- Mail original ----- 
>> 
>> De: "Stefan Priebe - Profihost AG" <s.priebe at profihost.ag> 
>> À: "Dietmar Maurer" <dietmar at proxmox.com> 
>> Cc: "Alexandre DERUMIER" <aderumier at odiso.com>, pve-devel at pve.proxmox.com 
>> Envoyé: Samedi 22 Décembre 2012 20:19:37 
>> Objet: Re: [pve-devel] migration problems since qemu 1.3 
>> 
>> Hi, 
>> 
>>> Please can we track the bug here: 
>>> https://bugzilla.proxmox.com/show_bug.cgi?id=298 
>> 
>> didn't know about the bug report. Great to see that i'm not the only one. 
>> 
>>> @Stefan: Does it work when the VM does not use and network device? 
>> 
>> No that changes nothing. I've removed all network devices and VM 
>> migration is still not working ;-( 
>> 
>> Mery XMAS. 
>> 
>> Greets, 
>> Stefan 
>>