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authorEyal Moscovici <eyal.moscovici@oracle.com>2020-05-13 16:36:29 +0300
committerEric Blake <eblake@redhat.com>2020-05-18 11:02:05 -0500
commitc0469496b32910a6a092d5b614efbf4088b13a29 (patch)
tree99e8482168bbb8ec2448c338db2bebe08780c2a9 /qemu-img-cmds.hx
parente46c0b18cfd02195a0d527ca73f3ed9f3ce5eacb (diff)
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 'qemu-img-cmds.hx')
-rw-r--r--qemu-img-cmds.hx4
1 files changed, 2 insertions, 2 deletions
diff --git a/qemu-img-cmds.hx b/qemu-img-cmds.hx
index c9c54de1df..35f832816f 100644
--- a/qemu-img-cmds.hx
+++ b/qemu-img-cmds.hx
@@ -63,9 +63,9 @@ SRST
ERST
DEF("map", img_map,
- "map [--object objectdef] [--image-opts] [-f fmt] [--output=ofmt] [-U] filename")
+ "map [--object objectdef] [--image-opts] [-f fmt] [--start-offset=offset] [--max-length=len] [--output=ofmt] [-U] filename")
SRST
-.. 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
ERST
DEF("measure", img_measure,