if (defined($version_string)) {
($major, $minor, $bugfix, $version_string) = &$ceph_version_parser($version_string);
} else {
- run_command('ceph version', outfunc => sub {
+ run_command('ceph --version', outfunc => sub {
my $line = shift;
($major, $minor, $bugfix, $version_string) = &$ceph_version_parser($line);
});