From: Jamie Lokier <jamie@shareable.org>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH] Stop VM on ENOSPC error
Date: Wed, 14 Jan 2009 18:39:55 +0000 [thread overview]
Message-ID: <20090114183954.GI6431@shareable.org> (raw)
In-Reply-To: <20090114170140.GA4011@redhat.com>
Gleb Natapov wrote:
> On Wed, Jan 14, 2009 at 04:47:17PM +0000, Jamie Lokier wrote:
> > Gleb Natapov wrote:
> > > And repeat last IDE command after VM restart.
> >
> > If there are multiple AIOs in flight when you get ENOSPC, you may need
> > to repeat all of them.
> >
> IDE does not support multiple outstanding commands. For SCSI that will have
> to be done though. What my patch is missing is PIO mode support, but this
> should be easy to add.
For some reason I imagined IDE with TCQ(sp?), or SATA with NCQ :-)
What about multiple IDE controllers. If the VM is stopped (for any
reason, not just ENOSPC) and resumed later, do _other_ controllers'
AIOs in flight need to be replayed? Are they saved in snapshot state?
-- Jamie
next prev parent reply other threads:[~2009-01-14 18:39 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-14 12:03 [Qemu-devel] [PATCH] Stop VM on ENOSPC error Gleb Natapov
2009-01-14 12:11 ` Daniel P. Berrange
2009-01-14 12:20 ` Dor Laor
2009-01-14 13:52 ` Gleb Natapov
2009-01-14 14:28 ` Kevin Wolf
2009-01-14 16:46 ` Jamie Lokier
2009-01-14 17:30 ` Daniel P. Berrange
2009-01-14 18:29 ` Anthony Liguori
2009-01-14 18:37 ` Jamie Lokier
2009-01-14 16:47 ` Jamie Lokier
2009-01-14 17:01 ` Gleb Natapov
2009-01-14 18:39 ` Jamie Lokier [this message]
2009-01-14 19:24 ` Gleb Natapov
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