FSCK(8) | System Manager's Manual | FSCK(8) |
fsck
— file system
consistency check and interactive repair
fsck |
[-dfnPpqvy ] [-l
maxparallel] [-T
fstype:fsoptions] [-t
fstype] [-x
mountpoint] [special | node ...] |
The fsck
command invokes file
system-specific programs to check the special devices listed in the
fstab(5) file or in the command
line for consistency.
It is normally used in the script /etc/rc
during automatic reboot. If no file systems are specified, and
“preen” mode is enabled ( -p
option)
fsck
reads the table
/etc/fstab to determine which file systems to check,
in what order. Only partitions in fstab that are mounted ``rw,'' ``rq'' or
``ro'' and that have non-zero pass number are checked. File systems with
pass number 1 (normally just the root file system) are checked one at a
time. When pass 1 completes, all remaining file systems are checked, running
one process per disk drive. By default, file systems which are already
mounted read-write are not checked. The disk drive containing each file
system is inferred 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
-f
-l
maxparallel-n
fsck
to assume no as the answer to all
operator questions, except "CONTINUE?".-P
-p
fsck
will check
all file systems listed in /etc/fstab according to
their pass number, and will make minor repairs without human
intervention.-q
-T
fstype:fsoptions-t
fstypefsck
only for the comma separated list of
file system types. If the list starts with “no” then invoke
fsck
for the file system types that are not
specified in the list.-v
-x
mountpoint-y
fsck
to assume yes as the answer to all
operator questions.fsck
exits with 0
on success. Any major problems will cause fsck
to
exit with the following non-zero
exit(3) codes, so as to alert
any invoking program or script that human intervention is required.
1
2
fsck
on the file system(s) is required.4
8
12
fsck
exited because of the result of a signal
(usually SIGINT
or SIGQUIT
from the terminal).fstab(5), fsck_ext2fs(8), fsck_ffs(8), fsck_lfs(8), fsck_msdos(8), mount(8)
An fsck
utility appeared in
4.0BSD. It was reimplemented as a file system
independent wrapper in NetBSD 1.3. The original file
system specific utility became
fsck_ffs(8) at this
point.
April 18, 2020 | NetBSD 10.99 |