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From: | Avi Kivity |
Subject: | Re: [Qemu-devel] [RFC PATCH 1/1] ceph/rbd block driver for qemu-kvm |
Date: | Tue, 25 May 2010 16:57:45 +0300 |
User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100330 Fedora/3.0.4-1.fc12 Thunderbird/3.0.4 |
On 05/25/2010 04:54 PM, Anthony Liguori wrote:
On 05/25/2010 08:36 AM, Avi Kivity wrote:We'd need a kernel-level generic snapshot API for this eventually.or (2) implement BUSE to complement FUSE and CUSE to enable proper userspace block devices.Likely slow due do lots of copying. Also needs a snapshot API.The kernel could use splice.
Still can't make guest memory appear in (A)BUSE process memory without either mmu tricks (vmsplice in reverse) or a copy. May be workable for an (A)BUSE driver that talks over a network, and thus can splice() its way out.
-- error compiling committee.c: too many arguments to function
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