[pve-devel] Local Disk Migration and ide controller

[Alexandre DERUMIER]

Hi,

I don't remember to have implemedted this device_del.

I don't see why need device_del on source ....
(That mean that we can't live migration disk without hotplug support)


if nbd reference on source is a problem for vm stop, maybe simply 
killing the qemu process at the end of the migration should works ?



----- Mail original -----
De: "e kasper" <e.kasper at proxmox.com>
À: "pve-devel" <pve-devel at pve.proxmox.com>
Envoyé: Lundi 10 Juillet 2017 09:39:53
Objet: [pve-devel] Local Disk Migration and ide controller

Hi Alexandre 

When migrating local disks and ide I get the following error: 

drive-ide0: transferred: 52428800 bytes remaining: 0 bytes total: 
52428800 bytes progression: 100.00 % busy: 0 ready: 1 
all mirroring jobs are ready 
drive-ide0: Completing block job... 
drive-ide0: Completed successfully. 
drive-ide0 : finished 
2017-07-10 09:10:52 # /usr/bin/ssh -o 'BatchMode=yes' -o 
'HostKeyAlias=pve4' root at 192.168.16.75 pvesr set-state 401 \''{}'\' 
2017-07-10 09:10:52 ERROR: VM 401 qmp command 'device_del' failed - Bus 
'ide.0' does not support hotplugging 
2017-07-10 09:10:52 ERROR: migration finished with problems (duration 
00:00:19) 
TASK ERROR: migration problems 

I presume this comes from QemuMigrate.pm 

# remove drives referencing the nbd server from source 
# otherwise vm_stop might hang later on 
foreach my $drive (keys %{$self->{target_drive}}){ 
PVE::QemuServer::vm_mon_cmd_nocheck($vmid, "device_del", id => $drive); 
} 

What should we do with VMs on disks IDE bus ? I can prepare a patch to 
catch this before the migration starts or do you see any better option ? 

I would like to iron out these kind of errors before putting the Migrate 
Local Disks option in the GUI. 

Emmanuel 



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