0af7bca250
Consider this /etc/fstab: # Device Mountpoint FStype Options Dump Pass# /dev/ad1s1b none swap sw 0 0 /dev/ad0s1b none swap sw 0 0 /dev/ad0s1a / ufs rw 1 1 /dev/ad0s1e /home ufs rw 2 2 /dev/ad1s1e /tmp ufs rw 2 2 /dev/ad1s1f /usr ufs rw 2 2 /dev/ccd0c /syv ufs rw 2 11 proc /proc procfs rw 0 0 ccd0c is striped over /dev/ad0f and /dev/ad1g Without this pass, fsck in preen mode will check ad0s1a first, and then issue three processes in parallel: One process doing ad0s1e One process doing ad1s1e and ad1s1f One process doing ccd0c There is no way to tell it that ccd0c overlaps ad0 and ad1. With the patch, it will do it this way: pass 2: One process doing ad0s1e One process doing ad1s1e and ad1s1f and when they are complete: pass 11: One process doing ccd0c This is much faster and more sane. Valid pass numbers are anything from 1 to INTMAX-1. I retired the '-l' option which tried to allow people to do something like this, but which didn't work and which complicated the code an awful lot.
131 lines
4.4 KiB
Groff
131 lines
4.4 KiB
Groff
.\" $NetBSD: fsck.8,v 1.19 1999/03/10 00:08:33 erh Exp $
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.\" Copyright (c) 1996 Christos Zoulas. All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 3. All advertising materials mentioning features or use of this software
|
|
.\" must display the following acknowledgement:
|
|
.\" This product includes software developed by Christos Zoulas.
|
|
.\" 4. The name of the author may not be used to endorse or promote products
|
|
.\" derived from this software without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|
.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|
.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|
.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|
.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
.\"
|
|
.Dd September 23, 1996
|
|
.Dt FSCK 8
|
|
.Os
|
|
.Sh NAME
|
|
.Nm fsck
|
|
.Nd file system consistency check and interactive repair
|
|
.Sh SYNOPSIS
|
|
.Nm
|
|
.Op Fl dvplfyn
|
|
.Op Fl l Ar maxparallel
|
|
.Op Fl t Ar fstype
|
|
.Op Fl T Ar fstype : Ns Ar fsoptions
|
|
.Op Ar special | node ...
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
command invokes filesystem-specific programs to check
|
|
the special devices listed in the
|
|
.Xr fstab 5
|
|
file or in the command line for consistency.
|
|
.Pp
|
|
It is normally used in the script
|
|
.Pa /etc/rc
|
|
during automatic reboot.
|
|
If no filesystems are specified, and ``preen'' mode is enabled (
|
|
.Fl p
|
|
option)
|
|
.Nm
|
|
reads the table
|
|
.Pa /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 always checked one at a time.
|
|
.Pp
|
|
If not in preen mode, the remaining entries are checked in order of
|
|
increasing pass number one at a time.
|
|
This is needed when interaction with fsck is required.
|
|
.Pp
|
|
In preen mode, after pass 1 completes, all remaining filesystems are checked,
|
|
in pass number order running one process per disk drive in parallel for each
|
|
pass number in increasing order.
|
|
.Pp
|
|
In other words: In preen mode all pass 1 partitions are checked sequentially.
|
|
Next all pass 2 partitions are checked in parallel, one process per disk drive.
|
|
Next all pass 3 partitions are checked in parallel, one process per disk drive.
|
|
etc.
|
|
.Pp
|
|
The disk drive containing each filesystem is inferred from the shortest prefix
|
|
of the device name that ends in a digit; the remaining characters are assumed
|
|
to be the partition and slice designators.
|
|
.Pp
|
|
The options are as follows:
|
|
.Bl -tag -width indent
|
|
.It Fl d
|
|
Debugging mode. Just print the commands without executing them. Available
|
|
only if
|
|
.Nm
|
|
is compiled to support it.
|
|
.It Fl f
|
|
Force checking of filesystems, even when they are marked clean (for filesystems
|
|
that support this).
|
|
.It Fl n
|
|
Causes
|
|
.Nm
|
|
to assume no as the answer to all operator questions, except "CONTINUE?".
|
|
.It Fl p
|
|
Enter preen mode.
|
|
.It Fl t Ar fstype
|
|
Invoke
|
|
.Nm
|
|
only for the comma separated list of filesystem types. If the
|
|
list starts with
|
|
.Dq no
|
|
then invoke
|
|
.Nm
|
|
for the filesystem types that are not specified in the list.
|
|
.It Fl v
|
|
Print the commands before executing them.
|
|
.It Fl y
|
|
Causes
|
|
.Nm
|
|
to assume yes
|
|
as the answer to all operator questions.
|
|
.It Fl T Ar fstype : Ns Ar fsoptions
|
|
List of comma separated file system specific options for the specified
|
|
file system type, in the same format as
|
|
.Xr mount 8 .
|
|
.El
|
|
.Sh FILES
|
|
.Bl -tag -width /etc/fstab -compact
|
|
.It Pa /etc/fstab
|
|
file system table
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr mount 8 ,
|
|
.Xr fstab 5 ,
|
|
.Xr fsck_msdos 8 ,
|
|
.Xr fsck_ffs 8
|