[PATCH 4/6] kbase: incrementalbackupinternals: Add section on 'qemu-img bitmap' use
Eric Blake
eblake at redhat.com
Wed Jun 24 14:30:41 UTC 2020
On 6/24/20 9:07 AM, Peter Krempa wrote:
> Define what users should look for when wanting to manipulate bitmaps
> themselves.
>
> Later on a patch will turn the bash algorithms into pseudocode for
> simplicity.
>
> Signed-off-by: Peter Krempa <pkrempa at redhat.com>
> ---
> docs/kbase/incrementalbackupinternals.rst | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
> diff --git a/docs/kbase/incrementalbackupinternals.rst b/docs/kbase/incrementalbackupinternals.rst
> index adc415e282..c8a0a66baa 100644
> --- a/docs/kbase/incrementalbackupinternals.rst
> +++ b/docs/kbase/incrementalbackupinternals.rst
> @@ -190,6 +190,20 @@ It's reccomended to use ``--output=json`` parameter to work with a machine
> readable output rather than trying to process the human readable output by
> scripts. For processing JSON in shell the ``jq`` tool can be used.
>
> +``qemu-img bitmap`` command allows modification of block-dirty-bitmaps of an
s/``qemu-img/The ``qemu-img/
s/an/an offline/
> +image. It supports the following operations relevant to this document (see man
> +page for full list of operations):
> +
> +``--add NAME``
> + Creates a new bitmap named ``NAME``. Optionally ``-g`` can be used to
> + specify granularity.
> +
> +``--remove NAME``
> + Deletes bitmap ``NAME``.
> +
> +``--merge SRCBITMAP -b SRCFILE -F SRCFILEFMT DSTBITMAP``
> + Merges bitmap ``SRCBITMAP`` from ``SRCFILE`` into ``DSTBITMAP``.
> +
> Checking bitmap health
> ----------------------
>
Reviewed-by: Eric Blake <eblake at redhat.com>
--
Eric Blake, Principal Software Engineer
Red Hat, Inc. +1-919-301-3226
Virtualization: qemu.org | libvirt.org
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