From: Eric Blake <eblake@redhat.com>
To: John Snow <jsnow@redhat.com>, qemu-block@nongnu.org
Cc: kwolf@redhat.com, jcody@redhat.com, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH 2/9] hbitmap: add hbitmap_copy
Date: Thu, 04 Jun 2015 20:37:39 -0600 [thread overview]
Message-ID: <55710B73.7020204@redhat.com> (raw)
In-Reply-To: <1433463642-21840-3-git-send-email-jsnow@redhat.com>
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On 06/04/2015 06:20 PM, John Snow wrote:
> It would be nice to have the flexibility to decide that
> we would like multiple backup chains (perhaps of differing
> frequency, or stored at different sites -- who knows.)
>
> If the user didn't have the foresight to add all the requisite
> bitmaps before the drive was engaged, the copy function will
> allow them to later differentiate an incremental backup chain
> into two or more chains at will.
>
> hbitmap_copy here is just the primitive to make copies of the
> implementation bitmap.
>
> Signed-off-by: John Snow <jsnow@redhat.com>
> ---
> include/qemu/hbitmap.h | 9 +++++++++
> util/hbitmap.c | 17 +++++++++++++++++
> 2 files changed, 26 insertions(+)
>
Reviewed-by: Eric Blake <eblake@redhat.com>
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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next prev parent reply other threads:[~2015-06-05 2:37 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-05 0:20 [Qemu-devel] [PATCH 0/9] block: add differential backup support John Snow
2015-06-05 0:20 ` [Qemu-devel] [PATCH 1/9] qapi: Rename 'dirty-bitmap' mode to 'incremental' John Snow
2015-06-05 2:34 ` Eric Blake
2015-06-25 16:16 ` [Qemu-devel] [Qemu-block] " Stefan Hajnoczi
2015-06-05 0:20 ` [Qemu-devel] [PATCH 2/9] hbitmap: add hbitmap_copy John Snow
2015-06-05 2:37 ` Eric Blake [this message]
2015-06-05 0:20 ` [Qemu-devel] [PATCH 3/9] block: add bdrv_copy_dirty_bitmap John Snow
2015-06-05 2:42 ` Eric Blake
2015-06-05 0:20 ` [Qemu-devel] [PATCH 4/9] qapi: add Copy data type for bitmaps John Snow
2015-06-05 2:57 ` Eric Blake
2015-06-05 0:20 ` [Qemu-devel] [PATCH 5/9] qmp: add qmp cmd block-dirty-bitmap-copy John Snow
2015-06-05 3:04 ` Eric Blake
2015-06-05 0:20 ` [Qemu-devel] [PATCH 6/9] qmp: add block-dirty-bitmap-copy transaction John Snow
2015-06-05 0:20 ` [Qemu-devel] [PATCH 7/9] block: add differential backup mode John Snow
2015-06-05 0:20 ` [Qemu-devel] [PATCH 8/9] iotests: 124: support differential backups John Snow
2015-06-05 0:20 ` [Qemu-devel] [PATCH 9/9] iotests: add differential backup test John Snow
2015-06-23 17:00 ` [Qemu-devel] [PATCH 0/9] block: add differential backup support John Snow
2015-06-24 14:33 ` Stefan Hajnoczi
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