.
Quentin
De : Qemu-devel
de la part de Quentin Grolleau
Envoyé : mardi 24 novembre 2020 13:58:53
À : Kevin Wolf
Cc : qemu-devel@nongnu.org; qemu-bl...@nongnu.org
Objet : RE: [raw] Guest stuck during live live-migration
Thanks Kevin,
> > Hello,
> >
12 184 ppoll
0.00 0.000184 12 16 poll
0.00 0.38 381 clone
0.00 0.32 162 rt_sigprocmask
0.00 0.13 131 ioctl
100.00 14.609303 30176 219 total
> Also, a final remark, I know of some cases (on XFS) where lseeks were
> slow because the image file was heavily fragmented. Defragmenting the
> file resolved the problem, so this may be another thing to try.
> On XFS, newer QEMU versions set an extent size hint on newly created
> image files (during qemu-img create), which can reduce fragmentation
> considerably.
> Kevin
> Server hosting the VM :
> - Bi-Xeon hosts With NVME storage and 10 Go Network card
> - Qemu 4.0 And Libvirt 5.4
> - Kernel 4.18.0.25
>
> Guest having the issue :
> - raw image with Debian 8
>
> Here the qemu img on the disk :
> > qemu-img info disk
> image: disk
> file format: raw
> virtual size: 400G (429496729600 bytes)
> disk size: 400G
>
>
> Quentin GROLLEAU
>
size: 400G (429496729600 bytes)
disk size: 400G
Quentin GROLLEAU
