diff options
| author | Max Reitz <mreitz@redhat.com> | 2017-04-26 15:46:48 +0200 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2017-04-27 17:26:28 +0200 |
| commit | 48758a84738c5be8cf022062ed0b85ff2ebacc0c (patch) | |
| tree | f1207a4088f71c1458ef491d5b2df8976d215a47 /qemu-img.c | |
| parent | 3258b91141090b05edcaab8f1d1dd355ca91b49a (diff) | |
qemu-img/convert: Move bs_n > 1 && -B check down
It does not make much sense to use a backing image for the target when
you concatenate multiple images (because then there is no correspondence
between the source images' backing files and the target's); but it was
still possible to give one by using -o backing_file=X instead of -B X.
Fix this by moving the check.
(Also, change the error message because -B is not the only way to
specify the backing file, evidently.)
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'qemu-img.c')
| -rw-r--r-- | qemu-img.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/qemu-img.c b/qemu-img.c index e0503aec9b..704488484d 100644 --- a/qemu-img.c +++ b/qemu-img.c @@ -2089,12 +2089,6 @@ static int img_convert(int argc, char **argv) } - if (s.src_num > 1 && out_baseimg) { - error_report("-B makes no sense when concatenating multiple input " - "images"); - goto fail_getopt; - } - /* ret is still -EINVAL until here */ ret = bdrv_parse_cache_mode(src_cache, &src_flags, &src_writethrough); if (ret < 0) { @@ -2208,6 +2202,13 @@ static int img_convert(int argc, char **argv) } s.target_has_backing = (bool) out_baseimg; + if (s.src_num > 1 && out_baseimg) { + error_report("Having a backing file for the target makes no sense when " + "concatenating multiple input images"); + ret = -1; + goto out; + } + /* Check if compression is supported */ if (s.compressed) { bool encryption = |