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Re: [Qemu-devel] [PATCH] doc: Propose NBD_FLAG_INIT_ZEROES extension
From: |
Stefan Hajnoczi |
Subject: |
Re: [Qemu-devel] [PATCH] doc: Propose NBD_FLAG_INIT_ZEROES extension |
Date: |
Tue, 6 Dec 2016 10:18:25 +0000 |
User-agent: |
Mutt/1.7.1 (2016-10-04) |
On Mon, Dec 05, 2016 at 05:42:35PM -0600, Eric Blake wrote:
> While not directly related to NBD_CMD_WRITE_ZEROES, the qemu
> team discovered that it is useful if a server can advertise
> whether an export is in a known-all-zeroes state at the time
> the client connects.
>
> Signed-off-by: Eric Blake <address@hidden>
> ---
> doc/proto.md | 5 +++++
> 1 file changed, 5 insertions(+)
>
> This replaces the following qemu patch attempt:
> https://lists.gnu.org/archive/html/qemu-devel/2016-12/msg00357.html
> which tried to add NBD_CMD_HAS_ZERO_INIT with poor semantics. The
> semantics in this proposal should be much better.
>
> Patch is to the merge of the master branch and the
> extension-write-zeroes branch. By the way, qemu 2.8 is due
> to be released "real soon now", and implements NBD_CMD_WRITE_ZEROES,
> so maybe it is time to consider promoting the extension-write-zeroes
> branch into master.
Useful, thanks!
Reviewed-by: Stefan Hajnoczi <address@hidden>
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Re: [Qemu-devel] [PATCH] doc: Propose NBD_FLAG_INIT_ZEROES extension,
Stefan Hajnoczi <=
Re: [Qemu-devel] [Nbd] [PATCH] doc: Propose NBD_FLAG_INIT_ZEROES extension, Wouter Verhelst, 2016/12/12
- Re: [Qemu-devel] [Qemu-block] [Nbd] [PATCH] doc: Propose NBD_FLAG_INIT_ZEROES extension, Kevin Wolf, 2016/12/13
- Re: [Qemu-devel] [Nbd] [Qemu-block] [PATCH] doc: Propose NBD_FLAG_INIT_ZEROES extension, Wouter Verhelst, 2016/12/13
- Re: [Qemu-devel] [Nbd] [Qemu-block] [PATCH] doc: Propose NBD_FLAG_INIT_ZEROES extension, Alex Bligh, 2016/12/13
- Re: [Qemu-devel] [Nbd] [Qemu-block] [PATCH] doc: Propose NBD_FLAG_INIT_ZEROES extension, Eric Blake, 2016/12/13
- Re: [Qemu-devel] [Nbd] [Qemu-block] [PATCH] doc: Propose NBD_FLAG_INIT_ZEROES extension, Wouter Verhelst, 2016/12/14
- Re: [Qemu-devel] [Nbd] [Qemu-block] [PATCH] doc: Propose NBD_FLAG_INIT_ZEROES extension, Eric Blake, 2016/12/14
- Re: [Qemu-devel] [Nbd] [Qemu-block] [PATCH] doc: Propose NBD_FLAG_INIT_ZEROES extension, Alex Bligh, 2016/12/14
- Re: [Qemu-devel] [Nbd] [Qemu-block] [PATCH] doc: Propose NBD_FLAG_INIT_ZEROES extension, Wouter Verhelst, 2016/12/14