From: Fam Zheng <famz@redhat.com>
To: Peter Lieven <pl@kamp.de>
Cc: kwolf@redhat.com, qemu-block@nongnu.org, stefanha@gmail.com,
jcody@redhat.com, qemu-devel@nongnu.org, jsnow@redhat.com
Subject: Re: [Qemu-devel] [PATCH V3 0/6] ide: avoid main-loop hang on CDROM/NFS failure
Date: Thu, 12 Nov 2015 19:33:03 +0800 [thread overview]
Message-ID: <20151112113303.GU4082@ad.usersys.redhat.com> (raw)
In-Reply-To: <1446799373-6144-1-git-send-email-pl@kamp.de>
On Fri, 11/06 09:42, Peter Lieven wrote:
> This series aims at avoiding a hanging main-loop if a vserver has a
> CDROM image mounted from a NFS share and that NFS share goes down.
> Typical situation is that users mount an CDROM ISO to install something
> and then forget to eject that CDROM afterwards.
> As a consequence this mounted CD is able to bring down the
> whole vserver if the backend NFS share is unreachable. This is bad
> especially if the CDROM itself is not needed anymore at this point.
If a storage backend is lost, would QEMU hang on guest reboot with this patch?
If so, just for understanding the problem, what is the use case this series
addresses?
The code looks good to me apart from the two questions I left, and that I
didn't fully understand the elementary transfer part.
Thanks,
Fam
next prev parent reply other threads:[~2015-11-12 11:33 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-06 8:42 [Qemu-devel] [PATCH V3 0/6] ide: avoid main-loop hang on CDROM/NFS failure Peter Lieven
2015-11-06 8:42 ` [Qemu-devel] [PATCH V3 1/6] ide/atapi: make PIO read requests async Peter Lieven
2015-11-09 23:35 ` John Snow
2015-11-06 8:42 ` [Qemu-devel] [PATCH V3 2/6] block: add blk_abort_aio_request Peter Lieven
2015-11-12 8:17 ` Fam Zheng
2015-11-06 8:42 ` [Qemu-devel] [PATCH V3 3/6] ide: add support for IDEBufferedRequest Peter Lieven
2015-11-12 9:57 ` Fam Zheng
2015-11-12 10:21 ` Peter Lieven
2015-11-06 8:42 ` [Qemu-devel] [PATCH V3 4/6] ide: orphan all buffered requests on DMA cancel Peter Lieven
2015-11-12 8:27 ` Fam Zheng
2015-11-12 8:45 ` Peter Lieven
2015-11-06 8:42 ` [Qemu-devel] [PATCH V3 5/6] ide: enable buffered requests for ATAPI devices Peter Lieven
2015-11-12 11:25 ` Fam Zheng
2015-11-12 11:42 ` Peter Lieven
2015-11-06 8:42 ` [Qemu-devel] [PATCH V3 6/6] ide: enable buffered requests for PIO read requests Peter Lieven
2015-11-12 11:33 ` Fam Zheng [this message]
2015-11-12 11:46 ` [Qemu-devel] [PATCH V3 0/6] ide: avoid main-loop hang on CDROM/NFS failure Peter Lieven
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