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| author | Eric Blake <eblake@redhat.com> | 2021-09-13 08:17:35 -0500 |
|---|---|---|
| committer | Hanna Reitz <hreitz@redhat.com> | 2021-09-15 18:42:38 +0200 |
| commit | 1899bf47375ad40555dcdff12ba49b4b8b82df38 (patch) | |
| tree | 13a8e3e1e5f72b80d615dd1f5690cd436b0ada8a /docs | |
| parent | 8fba39515170752c3bcdbb95551d778c94095271 (diff) | |
| download | qemu-1899bf47375ad40555dcdff12ba49b4b8b82df38.zip qemu-1899bf47375ad40555dcdff12ba49b4b8b82df38.tar.gz qemu-1899bf47375ad40555dcdff12ba49b4b8b82df38.tar.bz2 | |
qemu-img: Add -F shorthand to convert
Although we have long supported 'qemu-img convert -o
backing_file=foo,backing_fmt=bar', the fact that we have a shortcut -B
for backing_file but none for backing_fmt has made it more likely that
users accidentally run into:
qemu-img: warning: Deprecated use of backing file without explicit backing format
when using -B instead of -o. For similarity with other qemu-img
commands, such as create and compare, add '-F $fmt' as the shorthand
for '-o backing_fmt=$fmt'. Update iotest 122 for coverage of both
spellings.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20210913131735.1948339-1-eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/tools/qemu-img.rst | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/docs/tools/qemu-img.rst b/docs/tools/qemu-img.rst index fe6c30d..d58980a 100644 --- a/docs/tools/qemu-img.rst +++ b/docs/tools/qemu-img.rst @@ -415,7 +415,7 @@ Command description: 4 Error on reading data -.. option:: convert [--object OBJECTDEF] [--image-opts] [--target-image-opts] [--target-is-zero] [--bitmaps [--skip-broken-bitmaps]] [-U] [-C] [-c] [-p] [-q] [-n] [-f FMT] [-t CACHE] [-T SRC_CACHE] [-O OUTPUT_FMT] [-B BACKING_FILE] [-o OPTIONS] [-l SNAPSHOT_PARAM] [-S SPARSE_SIZE] [-r RATE_LIMIT] [-m NUM_COROUTINES] [-W] FILENAME [FILENAME2 [...]] OUTPUT_FILENAME +.. option:: convert [--object OBJECTDEF] [--image-opts] [--target-image-opts] [--target-is-zero] [--bitmaps [--skip-broken-bitmaps]] [-U] [-C] [-c] [-p] [-q] [-n] [-f FMT] [-t CACHE] [-T SRC_CACHE] [-O OUTPUT_FMT] [-B BACKING_FILE [-F backing_fmt]] [-o OPTIONS] [-l SNAPSHOT_PARAM] [-S SPARSE_SIZE] [-r RATE_LIMIT] [-m NUM_COROUTINES] [-W] FILENAME [FILENAME2 [...]] OUTPUT_FILENAME Convert the disk image *FILENAME* or a snapshot *SNAPSHOT_PARAM* to disk image *OUTPUT_FILENAME* using format *OUTPUT_FMT*. It can @@ -439,7 +439,7 @@ Command description: You can use the *BACKING_FILE* option to force the output image to be created as a copy on write image of the specified base image; the *BACKING_FILE* should have the same content as the input's base image, - however the path, image format, etc may differ. + however the path, image format (as given by *BACKING_FMT*), etc may differ. If a relative path name is given, the backing file is looked up relative to the directory containing *OUTPUT_FILENAME*. |