diff options
| author | Andrey Drobyshev via <qemu-block@nongnu.org> | 2023-09-08 00:02:25 +0300 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2023-09-20 17:46:01 +0200 |
| commit | 2848289168fbbd9a6855c84ec8fde8929a2b042b (patch) | |
| tree | b9ea8337d7947a9e89e9b7ceb280d9e2c1a43acb /include/block | |
| parent | 9def6082cf885fbb2e8e719d5055109c8a04b885 (diff) | |
| download | qemu-2848289168fbbd9a6855c84ec8fde8929a2b042b.zip qemu-2848289168fbbd9a6855c84ec8fde8929a2b042b.tar.gz qemu-2848289168fbbd9a6855c84ec8fde8929a2b042b.tar.bz2 | |
block: add BDRV_BLOCK_COMPRESSED flag for bdrv_block_status()
Functions qcow2_get_host_offset(), get_cluster_offset(),
vmdk_co_block_status() explicitly report compressed cluster types when data
is compressed. However, this information is never passed further. Let's
make use of it by adding new BDRV_BLOCK_COMPRESSED flag for
bdrv_block_status(), so that caller may know that the data range is
compressed. In particular, we're going to use this flag to tweak
"qemu-img map" output.
This new flag is only being utilized by qcow, qcow2 and vmdk formats, as only
those support compression.
Reviewed-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Hanna Czenczek <hreitz@redhat.com>
Signed-off-by: Andrey Drobyshev <andrey.drobyshev@virtuozzo.com>
Message-ID: <20230907210226.953821-2-andrey.drobyshev@virtuozzo.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'include/block')
| -rw-r--r-- | include/block/block-common.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/block/block-common.h b/include/block/block-common.h index 3bbc5d9..2d2af72 100644 --- a/include/block/block-common.h +++ b/include/block/block-common.h @@ -291,6 +291,8 @@ typedef enum { * layer rather than any backing, set by block layer * BDRV_BLOCK_EOF: the returned pnum covers through end of file for this * layer, set by block layer + * BDRV_BLOCK_COMPRESSED: the underlying data is compressed; only valid for + * the formats supporting compression: qcow, qcow2 * * Internal flags: * BDRV_BLOCK_RAW: for use by passthrough drivers, such as raw, to request @@ -326,6 +328,7 @@ typedef enum { #define BDRV_BLOCK_ALLOCATED 0x10 #define BDRV_BLOCK_EOF 0x20 #define BDRV_BLOCK_RECURSE 0x40 +#define BDRV_BLOCK_COMPRESSED 0x80 typedef QTAILQ_HEAD(BlockReopenQueue, BlockReopenQueueEntry) BlockReopenQueue; |