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authorMax Reitz <mreitz@redhat.com>2019-04-13 17:20:37 +0200
committerKevin Wolf <kwolf@redhat.com>2019-04-30 15:29:00 +0200
commitf4619af0c113a5f7434176d5f508b8a58c4d53d7 (patch)
treee9c23726f380f6ebf4a545b8ff5c9a2ea8f6d756 /qemu-img.c
parent0ef5a8e6ceb06205b96201b469748409a47f5b89 (diff)
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qemu-img: Make create hint at protocol options
qemu-img create allows giving just a format and "-o help" to get a list of the options supported by that format. Users may not realize that the protocol level may offer even more options, which they only get to see by specifying a filename. This patch adds a note to hint at that fact. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: John Snow <jsnow@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'qemu-img.c')
-rw-r--r--qemu-img.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/qemu-img.c b/qemu-img.c
index d7fe546..ddd55ab 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -267,9 +267,20 @@ static int print_block_option_help(const char *filename, const char *fmt)
create_opts = qemu_opts_append(create_opts, proto_drv->create_opts);
}
- printf("Supported options:\n");
+ if (filename) {
+ printf("Supported options:\n");
+ } else {
+ printf("Supported %s options:\n", fmt);
+ }
qemu_opts_print_help(create_opts, false);
qemu_opts_free(create_opts);
+
+ if (!filename) {
+ printf("\n"
+ "The protocol level may support further options.\n"
+ "Specify the target filename to include those options.\n");
+ }
+
return 0;
}