UFS file system information
utility prints out the UFS super block
and cylinder group information for the file system or special device
specified, unless the -f
specified. The listing is very long and detailed. This command is useful
mostly for finding out certain file system information such as the file system
block size and minimum free space percentage.
is specified, a sorted list of all free
fragments and free fragment ranges, as represented in cylinder group block
free lists, is printed. If the flag is specified twice, contiguous free
fragments are not collapsed into ranges and instead printed in a simple list.
Fragment numbers may be converted to raw byte offsets by multiplying by the
fragment size, which may be useful when recovering deleted data.
is specified, the pathname to the file
system's container derived from its unique identifier is printed.
is specified, a
command is printed that can be used to
generate a new file system with equivalent settings. Please note that
are not handled and
is not useful in this case so is omitted.
are neither checked for nor output but
should be. The -r
flag is needed if the
filesystem uses gjournal(8)
utility appeared in