From: Alexandre DERUMIER <aderumier@odiso.com>
To: pbonzini <pbonzini@redhat.com>
Cc: qemu-devel <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] virtio-scsi + iothread : segfault on drive_del
Date: Wed, 1 Apr 2015 15:02:45 +0200 (CEST) [thread overview]
Message-ID: <942876039.31520507.1427893365117.JavaMail.zimbra@oxygem.tv> (raw)
In-Reply-To: <551BC80F.9040702@redhat.com>
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
prev parent reply other threads:[~2015-04-01 13:02 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
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 [this message]
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