disk-utils/fsck.minix.8

   1 .\" Copyright 1992, 1993, 1994 Rickard E. Faith (faith@cs.unc.edu)
   2 .\" May be freely distributed.
   3 .TH FSCK.MINIX 8 "June 2015" "util-linux" "System Administration"
   4 .SH NAME
   5 fsck.minix \- check consistency of Minix filesystem
   6 .SH SYNOPSIS
   7 .B fsck.minix
   8 [options]
   9 .I device
  10 .SH DESCRIPTION
  11 .B fsck.minix
  12 performs a consistency check for the Linux MINIX filesystem.
  13 .PP
  14 The program assumes the filesystem is quiescent.
  15 .B fsck.minix
  16 should not be used on a mounted device unless you can be sure nobody is
  17 writing to it.  Remember that the kernel can write to device when it
  18 searches for files.
  19 .PP
  20 The \fIdevice\fR name will usually have the following form:
  21 .RS
  22 .TS
  23 tab(:);
  24 l l.
  25 /dev/hda[1\(en63]:IDE disk 1
  26 /dev/hdb[1\(en63]:IDE disk 2
  27 /dev/sda[1\(en15]:SCSI disk 1
  28 /dev/sdb[1\(en15]:SCSI disk 2
  29 .TE
  30 .RE
  31 .PP
  32 If the filesystem was changed, i.e., repaired, then
  33 .B fsck.minix
  34 will print "FILE SYSTEM HAS CHANGED" and will
  35 .BR sync (2)
  36 three times before exiting.  There is
  37 .I no
  38 need to reboot after check.
  39 .SH WARNING
  40 .B fsck.minix
  41 should
  42 .B not
  43 be used on a mounted filesystem.  Using
  44 .B fsck.minix
  45 on a mounted filesystem is very dangerous, due to the possibility that
  46 deleted files are still in use, and can seriously damage a perfectly good
  47 filesystem!  If you absolutely have to run
  48 .B fsck.minix
  49 on a mounted filesystem, such as the root filesystem, make sure nothing
  50 is writing to the disk, and that no files are "zombies" waiting for
  51 deletion.
  52 .SH OPTIONS
  53 .TP
  54 \fB\-l\fR, \fB\-\-list\fR
  55 List all filenames.
  56 .TP
  57 \fB\-r\fR, \fB\-\-repair\fR
  58 Perform interactive repairs.
  59 .TP
  60 \fB\-a\fR, \fB\-\-auto\fR
  61 Perform automatic repairs.  This option implies
  62 .B \-\-repair
  63 and serves to answer all of the questions asked with the default.  Note
  64 that this can be extremely dangerous in the case of extensive filesystem
  65 damage.
  66 .TP
  67 \fB\-v\fR, \fB\-\-verbose\fR
  68 Be verbose.
  69 .TP
  70 \fB\-s\fR, \fB\-\-super\fR
  71 Output super-block information.
  72 .TP
  73 \fB\-m\fR, \fB\-\-uncleared\fR
  74 Activate MINIX-like "mode not cleared" warnings.
  75 .TP
  76 \fB\-f\fR, \fB\-\-force\fR
  77 Force a filesystem check even if the filesystem was marked as valid.
  78 Marking is done by the kernel when the filesystem is unmounted.
  79 .TP
  80 \fB\-V\fR, \fB\-\-version\fR
  81 Display version information and exit.
  82 .TP
  83 \fB\-h\fR, \fB\-\-help\fR
  84 Display help text and exit.
  85 .SH DIAGNOSTICS
  86 There are numerous diagnostic messages.  The ones mentioned here are the
  87 most commonly seen in normal usage.
  88 .PP
  89 If the device does not exist,
  90 .B fsck.minix
  91 will print "unable to read super block".  If the device exists, but is not
  92 a MINIX filesystem,
  93 .B fsck.minix
  94 will print "bad magic number in super-block".
  95 .SH "EXIT CODES"
  96 The exit code returned by
  97 .B fsck.minix
  98 is the sum of the following:
  99 .PP
 100 .RS
 101 .PD 0
 102 .TP
 103 .B 0
 104 No errors
 105 .TP
 106 .B 3
 107 Filesystem errors corrected, system should be rebooted if filesystem was
 108 mounted
 109 .TP
 110 .B 4
 111 Filesystem errors left uncorrected
 112 .TP
 113 .B 7
 114 Combination of exit codes 3 and 4
 115 .TP
 116 .B 8
 117 Operational error
 118 .TP
 119 .B 16
 120 Usage or syntax error
 121 .PD
 122 .RE
 123 .PP
 124 .SH AUTHORS
 125 .MT torvalds@\:cs.\:helsinki.\:fi
 126 Linus Torvalds
 127 .ME
 128 .br
 129 Error code values by
 130 .MT faith@\:cs.\:unc.\:edu
 131 Rik Faith
 132 .ME
 133 .br
 134 Added support for filesystem valid flag:
 135 .MT greg%\:wind.\:uucp@\:plains.\:nodak.\:edu
 136 Dr.\& Wettstein
 137 .ME .
 138 .br
 139 Check to prevent fsck of mounted filesystem added by
 140 .MT quinlan@\:yggdrasil.\:com
 141 Daniel Quinlan
 142 .ME .
 143 .br
 144 Minix v2 fs support by
 145 .MT schwab@\:issan.\:informatik.\:uni-dortmund.\:de
 146 Andreas Schwab
 147 .ME ,
 148 updated by
 149 .MT janl@\:math.\:uio.\:no
 150 Nicolai Langfeldt
 151 .ME .
 152 .br
 153 Portability patch by
 154 .MT rmk@\:ecs.\:soton.\:ac.\:uk
 155 Russell King
 156 .ME .
 157 .SH "SEE ALSO"
 158 .BR fsck (8),
 159 .BR fsck.ext2 (8),
 160 .BR mkfs (8),
 161 .BR mkfs.ext2 (8),
 162 .BR mkfs.minix (8),
 163 .BR reboot (8)
 164 .SH AVAILABILITY
 165 The fsck.minix command is part of the util-linux package and is available from
 166 .UR https://\:www.kernel.org\:/pub\:/linux\:/utils\:/util-linux/
 167 Linux Kernel Archive
 168 .UE .