From: Eric Blake <eblake@redhat.com>
To: Peter Lieven <pl@kamp.de>
Cc: kwolf@redhat.com, ronniesahlberg@gmail.com, stefanha@redhat.com,
qemu-devel@nongnu.org, anthony@codemonkey.ws,
pbonzini@redhat.com
Subject: Re: [Qemu-devel] [PATCH 07/12] block: introduce bdrv_zeroize
Date: Fri, 13 Sep 2013 12:23:40 -0600 [thread overview]
Message-ID: <5233582C.9080407@redhat.com> (raw)
In-Reply-To: <1379067909-22984-8-git-send-email-pl@kamp.de>
[-- Attachment #1: Type: text/plain, Size: 763 bytes --]
On 09/13/2013 04:25 AM, Peter Lieven wrote:
> this patch adds a call to completely zero out a block device.
> the operation is speed up by checking the block status and
s/speed/sped/
> only writing zeroes to the device if they currently do not
> return zeroes. optionally the zero writing can be speed up
and again
> by setting the flag BDRV_REQ_MAY_UNMAP to emulate the zero
> write by unmapping if the driver supports it.
>
> Signed-off-by: Peter Lieven <pl@kamp.de>
> ---
> block.c | 45 +++++++++++++++++++++++++++++++++++++++++++++
> include/block/block.h | 1 +
> 2 files changed, 46 insertions(+)
>
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 621 bytes --]
next prev parent reply other threads:[~2013-09-13 18:23 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-13 10:24 [Qemu-devel] [PATCH 00/12] block: logical block provisioning enhancements Peter Lieven
2013-09-13 10:24 ` [Qemu-devel] [PATCH 01/12] block: make BdrvRequestFlags public Peter Lieven
2013-09-13 16:29 ` Eric Blake
2013-09-13 10:24 ` [Qemu-devel] [PATCH 02/12] block: add flags to bdrv_*_write_zeroes Peter Lieven
2013-09-13 16:58 ` Eric Blake
2013-09-13 10:25 ` [Qemu-devel] [PATCH 03/12] block: introduce BDRV_REQ_MAY_UNMAP in bdrv_co_write_zeroes Peter Lieven
2013-09-13 18:07 ` Eric Blake
2013-09-13 10:25 ` [Qemu-devel] [PATCH 04/12] iscsi: add .bdrv_co_write_zeroes Peter Lieven
2013-09-13 18:10 ` Eric Blake
2013-09-13 10:25 ` [Qemu-devel] [PATCH 05/12] block: add logical block provisioning information to BlockDriverInfo Peter Lieven
2013-09-13 10:34 ` Paolo Bonzini
2013-09-13 10:44 ` Peter Lieven
2013-09-13 11:45 ` Paolo Bonzini
2013-09-13 12:22 ` Peter Lieven
2013-09-13 12:58 ` Paolo Bonzini
2013-09-16 11:30 ` Peter Lieven
2013-09-16 11:37 ` Paolo Bonzini
2013-09-13 10:25 ` [Qemu-devel] [PATCH 06/12] iscsi: add .bdrv_get_info Peter Lieven
2013-09-13 18:19 ` Eric Blake
2013-09-13 10:25 ` [Qemu-devel] [PATCH 07/12] block: introduce bdrv_zeroize Peter Lieven
2013-09-13 10:47 ` Peter Lieven
2013-09-13 18:23 ` Eric Blake [this message]
2013-09-13 10:25 ` [Qemu-devel] [PATCH 08/12] qemu-img: conditionally zero out target on convert Peter Lieven
2013-09-13 10:36 ` Paolo Bonzini
2013-09-13 10:46 ` Peter Lieven
2013-09-13 11:35 ` Paolo Bonzini
2013-09-13 18:25 ` Eric Blake
2013-09-13 19:48 ` Peter Lieven
2013-09-13 19:52 ` Eric Blake
2013-09-16 11:01 ` Paolo Bonzini
2013-09-13 10:25 ` [Qemu-devel] [PATCH 09/12] block/get_block_status: set *pnum = 0 on error Peter Lieven
2013-09-13 18:26 ` Eric Blake
2013-09-13 10:25 ` [Qemu-devel] [PATCH 10/12] block/get_block_status: avoid segfault if there is no backing_hd Peter Lieven
2013-09-13 18:26 ` Eric Blake
2013-09-13 10:25 ` [Qemu-devel] [PATCH 11/12] block/get_block_status: avoid redundant callouts on raw devices Peter Lieven
2013-09-13 18:28 ` Eric Blake
2013-09-13 10:25 ` [Qemu-devel] [PATCH 12/12] block/get_block_status: fix BDRV_BLOCK_ZERO for unallocated blocks Peter Lieven
2013-09-13 13:53 ` Eric Blake
2013-09-16 5:47 ` Peter Lieven
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=5233582C.9080407@redhat.com \
--to=eblake@redhat.com \
--cc=anthony@codemonkey.ws \
--cc=kwolf@redhat.com \
--cc=pbonzini@redhat.com \
--cc=pl@kamp.de \
--cc=qemu-devel@nongnu.org \
--cc=ronniesahlberg@gmail.com \
--cc=stefanha@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.