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btrfs-progs: btrfstune: update help string 

Reformat and update the help string so it's more aligned with other
utilities (mkfs.btrfs was taken as a source):

- reduce indentation
- group related options
- add references to mkfs features
- wording adjustments

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2019-01-17 01:06:34 +01:00
parent 111f1473bd
commit 08f8176e7a
1 changed files with 16 additions and 9 deletions
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25
btrfstune.c
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@ -462,15 +462,22 @@ out:
static void print_usage(void)
{
printf("usage: btrfstune [options] device\n");
printf("\t-S value\tpositive value will enable seeding, zero to disable, negative is not allowed\n");
printf("\t-r \t\tenable extended inode refs\n");
printf("\t-x \t\tenable skinny metadata extent refs\n");
printf("\t-n \t\tenable no-holes feature (more efficient sparse file representation)\n");
printf("\t-f \t\tforce to do dangerous operation, make sure that you are aware of the dangers\n");
printf("\t-u \t\trewrite fsid, use a random one\n");
printf("\t-U UUID\t\trewrite fsid to UUID\n");
printf("\t-m \t\tchange only metadata uuid (more lightweight than -u|-U)\n");
printf("\t-M UUID\t\tchange fsid to UUID\n");
printf("Tune settings of filesystem features on an unmounted device\n\n");
printf("Options:\n");
printf(" change feature status:\n");
printf("\t-r enable extended inode refs (mkfs: extref, for hardlink limits)\n");
printf("\t-x enable skinny metadata extent refs (mkfs: skinny-metadata)\n");
printf("\t-n enable no-holes feature (mkfs: no-holes, more efficient sparse file representation)\n");
printf("\t-S <0|1> set/unset seeding status of a device\n");
printf(" uuid changes:\n");
printf("\t-u rewrite fsid, use a random one\n");
printf("\t-U UUID rewrite fsid to UUID\n");
printf("\t-m change fsid in metadata_uuid to a random UUID\n");
printf("\t (incompat change, more lightweight than -u|-U)\n");
printf("\t-M UUID change fsid in metadata_uuid to UUID\n");
printf(" general:\n");
printf("\t-f allow dangerous operations, make sure that you are aware of the dangers\n");
printf("\t--help print this help\n");
}
int main(int argc, char *argv[])