* [Qemu-devel] virtio-scsi + iothread : segfault on drive_del
@ 2015-04-01 3:34 Alexandre DERUMIER
2015-04-01 10:27 ` Paolo Bonzini
0 siblings, 1 reply; 3+ messages in thread
From: Alexandre DERUMIER @ 2015-04-01 3:34 UTC (permalink / raw)
To: qemu-devel
Hi,
I'm currently testing virtio-scsi and iothread,
and I'm seeing qemu segfault when I try to remove an scsi drive
on top of an virtio-scsi controller with iothread enabled.
virtio-blk + iothread drive_del is supported since this patch
http://comments.gmane.org/gmane.comp.emulators.qemu/291562
"block: support drive_del with dataplane
This series makes hot unplug work with virtio-blk dataplane devices. It should
also work with Fam's virtio-scsi dataplane patches."
I don't known about virtio-scsi ?
Regards,
Alexandre
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Qemu-devel] virtio-scsi + iothread : segfault on drive_del
2015-04-01 3:34 [Qemu-devel] virtio-scsi + iothread : segfault on drive_del Alexandre DERUMIER
@ 2015-04-01 10:27 ` Paolo Bonzini
2015-04-01 13:02 ` Alexandre DERUMIER
0 siblings, 1 reply; 3+ messages in thread
From: Paolo Bonzini @ 2015-04-01 10:27 UTC (permalink / raw)
To: Alexandre DERUMIER, qemu-devel
On 01/04/2015 05:34, Alexandre DERUMIER wrote:
>
> I'm currently testing virtio-scsi and iothread,
>
> and I'm seeing qemu segfault when I try to remove an scsi drive
> on top of an virtio-scsi controller with iothread enabled.
>
>
> virtio-blk + iothread drive_del is supported since this patch
>
> http://comments.gmane.org/gmane.comp.emulators.qemu/291562
> "block: support drive_del with dataplane
>
> This series makes hot unplug work with virtio-blk dataplane devices. It should
> also work with Fam's virtio-scsi dataplane patches."
virtio-scsi + iothread is experimental and not yet thread-safe.
Deadlocks or crashes are expected, and not really fixable without a lot
of preparatory changes to core QEMU code. These are being done, but I
don't expect it to be fixed before 2.5.
Paolo
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Qemu-devel] virtio-scsi + iothread : segfault on drive_del
2015-04-01 10:27 ` Paolo Bonzini
@ 2015-04-01 13:02 ` Alexandre DERUMIER
0 siblings, 0 replies; 3+ messages in thread
From: Alexandre DERUMIER @ 2015-04-01 13:02 UTC (permalink / raw)
To: pbonzini; +Cc: qemu-devel
Ok,
thanks paolo !
----- Mail original -----
De: "pbonzini" <pbonzini@redhat.com>
À: "aderumier" <aderumier@odiso.com>, "qemu-devel" <qemu-devel@nongnu.org>
Envoyé: Mercredi 1 Avril 2015 12:27:27
Objet: Re: virtio-scsi + iothread : segfault on drive_del
On 01/04/2015 05:34, Alexandre DERUMIER wrote:
>
> I'm currently testing virtio-scsi and iothread,
>
> and I'm seeing qemu segfault when I try to remove an scsi drive
> on top of an virtio-scsi controller with iothread enabled.
>
>
> virtio-blk + iothread drive_del is supported since this patch
>
> http://comments.gmane.org/gmane.comp.emulators.qemu/291562
> "block: support drive_del with dataplane
>
> This series makes hot unplug work with virtio-blk dataplane devices. It should
> also work with Fam's virtio-scsi dataplane patches."
virtio-scsi + iothread is experimental and not yet thread-safe.
Deadlocks or crashes are expected, and not really fixable without a lot
of preparatory changes to core QEMU code. These are being done, but I
don't expect it to be fixed before 2.5.
Paolo
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2015-04-01 13:02 UTC | newest]
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2015-04-01 3:34 [Qemu-devel] virtio-scsi + iothread : segfault on drive_del Alexandre DERUMIER
2015-04-01 10:27 ` Paolo Bonzini
2015-04-01 13:02 ` Alexandre DERUMIER
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