fsck(8) - NetBSD Manual Pages

FSCK(8)                 NetBSD System Manager's Manual                 FSCK(8)


NAME

     fsck - file system consistency check and interactive repair


SYNOPSIS

     fsck [-dvplfyn] [-l maxparallel] [-t fstype] [-T fstype:fsoptions]
          [special | node ...]


DESCRIPTION

     The fsck command invokes filesystem-specific programs to check the spe-
     cial devices listed in the fstab(5) file or in the command line for con-
     sistency.

     It is normally used in the script /etc/rc during automatic reboot.  If no
     filesystems are specified, and ``preen'' mode is enabled ( -p option)
     fsck reads the table /etc/fstab to determine which filesystems to check.
     Only partitions in fstab that are mounted ``rw,'' ``rq'' or ``ro'' and
     that have non-zero pass number are checked.  Filesystems with pass number
     1 (normally just the root filesystem) are checked one at a time.  When
     pass 1 completes, all remaining filesystems are checked, running one pro-
     cess per disk drive.  The disk drive containing each filesystem is in-
     ferred from the longest prefix of the device name that ends in a digit;
     the remaining characters are assumed to be the partition designator.

     The options are as follows:

     -d      Debugging mode. Just print the commands without executing them.
             Available only if fsck is compiled to support it.

     -f      Force checking of filesystems, even when they are marked clean
             (for filesystems that support this).

     -l maxparallel
             Limit the number of parallel checks to the number specified in
             the following argument. By default, the limit is the number of
             disks, running one process per disk. If a smaller limit is giv-
             en, the disks are checked round-robin, one filesystem at a time.

     -n      Causes fsck to assume no as the answer to all operator questions,
             except "CONTINUE?".

     -p      Enter preen mode.

     -t fstype
             Invoke fsck only for the comma separated list of filesystem
             types. If the list starts with ``no'' then invoke fsck for the
             filesystem types that are not specified in the list.

     -v      Print the commands before executing them.

     -y      Causes fsck to assume yes as the answer to all operator ques-
             tions.

     -T fstype:fsoptions
             List of comma separated file system specific options for the
             specified file system type, in the same format as mount(8).


FILES

     /etc/fstab  file system table


SEE ALSO

     mount(8), fstab(5), fsck_msdos(8), fsck_ffs(8)

NetBSD                        September 23, 1996                             1