diff options
| -rw-r--r-- | qemu-img.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/qemu-img.c b/qemu-img.c index 6a3973163f..86127f0b11 100644 --- a/qemu-img.c +++ b/qemu-img.c @@ -824,6 +824,8 @@ static int img_convert(int argc, char **argv) if (compress) { QEMUOptionParameter *encryption = get_option_parameter(param, BLOCK_OPT_ENCRYPT); + QEMUOptionParameter *preallocation = + get_option_parameter(param, BLOCK_OPT_PREALLOC); if (!drv->bdrv_write_compressed) { error_report("Compression not supported for this file format"); @@ -837,6 +839,15 @@ static int img_convert(int argc, char **argv) ret = -1; goto out; } + + if (preallocation && preallocation->value.s + && strcmp(preallocation->value.s, "off")) + { + error_report("Compression and preallocation not supported at " + "the same time"); + ret = -1; + goto out; + } } /* Create the new image */ |