Re: [Qemu-devel] [RFC V5 02/62] qcow2: Add deduplication structures and fields.

[Eric Blake <eblake@redhat.com>]

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On 01/16/2013 08:47 AM, Benoît Canet wrote:
> Signed-off-by: Benoit Canet <benoit@irqsave.net>
> ---
>  block/qcow2.h |   72 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
>  1 file changed, 71 insertions(+), 1 deletion(-)
> 
> diff --git a/block/qcow2.h b/block/qcow2.h
> index 718b52b..b31b64e 100644
> --- a/block/qcow2.h
> +++ b/block/qcow2.h
> @@ -43,6 +43,10 @@
>  #define QCOW_OFLAG_COPIED     (1LL << 63)
>  /* indicate that the cluster is compressed (they never have the copied flag) */
>  #define QCOW_OFLAG_COMPRESSED (1LL << 62)
> +/* indicate that the cluster must be processed when deduplication restart
> + * also indicate that the on disk dedup hash must be ignored and discarded

s/restart also/restarts. Also,/


> +/* deduplication node */
> +typedef struct {
> +    QCowHash hash;
> +    uint64_t physical_sect;       /* where the cluster is stored on disk */
> +    uint64_t first_logical_sect;  /* logical sector of the first occurence of

s/occurence/occurrence/

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org


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