From: Kevin Wolf <kwolf@redhat.com>
To: Kaveh Razavi <kaveh@cs.vu.nl>
Cc: Stefan Hajnoczi <stefanha@redhat.com>,
qemu-devel@nongnu.org, Alex Bligh <alex@alex.org.uk>
Subject: Re: [Qemu-devel] [PATCH] Introduce cache images for the QCOW2 format
Date: Wed, 14 Aug 2013 17:32:16 +0200 [thread overview]
Message-ID: <20130814153216.GN4583@dhcp-200-207.str.redhat.com> (raw)
In-Reply-To: <520B937D.6060105@cs.vu.nl>
Am 14.08.2013 um 16:26 hat Kaveh Razavi geschrieben:
> On 08/14/2013 03:50 PM, Alex Bligh wrote:
> > Assuming the cache quota is not exhausted, how do you know how that
> > a VM has finished 'creating' the cache? At any point it might
> > read a bit more from the backing image.
>
> I was assuming on shutdown.
Wait, so you're not really changing the cache while it's used, but you
only create it once and then use it like a regular backing file? If so,
the only thing we need to talk about is the creation, because there's no
difference for using it.
Creation can use the existing copy-on-read functionality, and the only
thing you need additionally is a way to turn copy-on-read off at the
right point.
Or do I misunderstand what you're doing?
Kevin
next prev parent reply other threads:[~2013-08-14 15:32 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-13 17:03 [Qemu-devel] [PATCH] Introduce cache images for the QCOW2 format Kaveh Razavi
2013-08-13 21:37 ` Eric Blake
2013-08-14 11:13 ` Kaveh Razavi
2013-08-13 22:53 ` Alex Bligh
2013-08-14 11:28 ` Kaveh Razavi
2013-08-14 11:52 ` Fam Zheng
2013-08-14 12:03 ` Alex Bligh
2013-08-14 15:58 ` Richard W.M. Jones
2013-08-15 0:53 ` Fam Zheng
2013-08-15 5:51 ` Alex Bligh
2013-08-14 11:57 ` Alex Bligh
2013-08-14 13:37 ` Kaveh Razavi
2013-08-13 23:16 ` Alex Bligh
2013-08-14 11:42 ` Kaveh Razavi
2013-08-14 12:02 ` Alex Bligh
2013-08-14 13:43 ` Kaveh Razavi
2013-08-14 13:50 ` Alex Bligh
2013-08-14 14:26 ` Kaveh Razavi
2013-08-14 15:02 ` Alex Bligh
2013-08-14 15:32 ` Kevin Wolf [this message]
2013-08-15 7:50 ` Wenchao Xia
2013-08-15 8:11 ` Stefan Hajnoczi
2013-08-14 9:29 ` Stefan Hajnoczi
2013-08-14 14:20 ` Kaveh Razavi
2013-08-15 8:32 ` Stefan Hajnoczi
2013-08-15 12:25 ` Kaveh Razavi
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