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| author | Eyal Moscovici | 2020-05-13 15:36:29 +0200 |
|---|---|---|
| committer | Eric Blake | 2020-05-18 18:02:05 +0200 |
| commit | c0469496b32910a6a092d5b614efbf4088b13a29 (patch) | |
| tree | 99e8482168bbb8ec2448c338db2bebe08780c2a9 /docs/tools | |
| parent | qemu-img: refactor dump_map_entry JSON format output (diff) | |
| download | qemu-c0469496b32910a6a092d5b614efbf4088b13a29.tar.gz qemu-c0469496b32910a6a092d5b614efbf4088b13a29.tar.xz qemu-c0469496b32910a6a092d5b614efbf4088b13a29.zip | |
qemu-img: Add --start-offset and --max-length to map
The mapping operation of large disks especially ones stored over a
long chain of QCOW2 files can take a long time to finish.
Additionally when mapping fails there was no way recover by
restarting the mapping from the failed location.
The new options, --start-offset and --max-length allows the user to
divide these type of map operations into shorter independent tasks.
Reviewed-by: Eric Blake <eblake@redhat.com>
Acked-by: Mark Kanda <mark.kanda@oracle.com>
Co-developed-by: Yoav Elnekave <yoav.elnekave@oracle.com>
Signed-off-by: Yoav Elnekave <yoav.elnekave@oracle.com>
Signed-off-by: Eyal Moscovici <eyal.moscovici@oracle.com>
Message-Id: <20200513133629.18508-5-eyal.moscovici@oracle.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Diffstat (limited to 'docs/tools')
| -rw-r--r-- | docs/tools/qemu-img.rst | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/docs/tools/qemu-img.rst b/docs/tools/qemu-img.rst index 0080f83a76..f4ffe528ea 100644 --- a/docs/tools/qemu-img.rst +++ b/docs/tools/qemu-img.rst @@ -519,7 +519,7 @@ Command description: ``ImageInfoSpecific*`` QAPI object (e.g. ``ImageInfoSpecificQCow2`` for qcow2 images). -.. option:: map [--object OBJECTDEF] [--image-opts] [-f FMT] [--output=OFMT] [-U] FILENAME +.. option:: map [--object OBJECTDEF] [--image-opts] [-f FMT] [--start-offset=OFFSET] [--max-length=LEN] [--output=OFMT] [-U] FILENAME Dump the metadata of image *FILENAME* and its backing file chain. In particular, this commands dumps the allocation state of every sector |