From: Paolo Bonzini <pbonzini@redhat.com>
To: Alexandre DERUMIER <aderumier@odiso.com>,
qemu-devel <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] virtio-scsi + iothread : segfault on drive_del
Date: Wed, 01 Apr 2015 12:27:27 +0200 [thread overview]
Message-ID: <551BC80F.9040702@redhat.com> (raw)
In-Reply-To: <173593231.25820090.1427859280478.JavaMail.zimbra@oxygem.tv>
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
next prev parent reply other threads:[~2015-04-01 10:27 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 [this message]
2015-04-01 13:02 ` Alexandre DERUMIER
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=551BC80F.9040702@redhat.com \
--to=pbonzini@redhat.com \
--cc=aderumier@odiso.com \
--cc=qemu-devel@nongnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.