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    Contents of /tags/mkinitrd-6_3_0/mkinitrd.8

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    Revision 1139 - (show annotations) (download)
    Thu Aug 19 10:14:02 2010 UTC (13 years, 8 months ago) by niro
    File size: 4152 byte(s) 
    tagged 'mkinitrd-6_3_0'
    1 .TH MKINITRD 8 "Tue Aug 10 2004"
    2 .SH NAME
    3 mkinitrd \- creates initial ramdisk images for preloading modules
    4 .SH SYNOPSIS
    5 \fBmkinitrd\fR [--version] [-v] [-f]
    6 [--preload=\fImodule\fR] [--omit-scsi-modules]
    7 [--omit-raid-modules] [--omit-lvm-modules]
    8 [--with=\fImodule\fR] [--image-version]
    9 [--fstab=\fIfstab\fR] [--nocompress]
    10 [--builtin=\fImodule\fR] [--nopivot]
    11 \fIimage\fR \fIkernel-version\fR
    12
    13 .SH DESCRIPTION
    14 \fBmkinitrd\fR creates an initial image used by the kernel for
    15 preloading the block device modules (such as IDE, SCSI or RAID)
    16 which are needed to access the root filesystem. \fBmkinitrd\fR
    17 automatically loads filesystem modules (such as ext3 and jbd), IDE modules, all
    18 \fIscsi_hostadapter\fR entries in \fI/etc/modprobe.conf\fR, and raid
    19 modules if the system's root partition is on raid, which makes it simple
    20 to build and use kernels using modular device drivers.
    21
    22 Any module options specified in \fI/etc/modprobe.conf\fR are passed
    23 to the modules as they are loaded by the initial ramdisk.
    24
    25 The root filesystem used by the kernel is specified in the boot configuration
    26 file, as always. The traditional \fBroot=/dev/hda1\fR style device
    27 specification is allowed. If a label is used, as in \fBroot=LABEL=rootPart\fR
    28 the initrd will search all available devices for an ext2 or ext3 filesystem
    29 with the appropriate label, and mount that device as the root filesystem.
    30
    31 .SH OPTIONS
    32 .TP
    33 \fB-\-builtin=\fR\fImodule\fR
    34 Act as if \fImodule\fR is built into the kernel being used. \fBmkinitrd\fR
    35 will not look for this module, and will not emit an error if it does not
    36 exist. This option may be used multiple times.
    37
    38 .TP
    39 \fB-f\fR
    40 Allows \fBmkinitrd\fR to overwrite an existing image file.
    41
    42 .TP
    43 \fB-\-fstab=\fR\fIfstab\fR
    44 Use \fIfstab\fR to automatically determine what type of filesystem the
    45 root device is on. Normally, \fB/etc/fstab\fR is used.
    46
    47 .TP
    48 \fB-\-image-version
    49 The kernel version number is appended to the initrd image path before the image
    50 is created.
    51
    52 .TP
    53 \fB-\-nocompress
    54 Normally the created initrd image is compressed with \fBgzip\fR. If this
    55 option is specified, the compression is skipped.
    56
    57 .TP
    58 \fB-\-nopivot
    59 Do not use the \fBpivot_root\fR system call as part of the initrd. This
    60 lets \fBmkinitrd\fR build proper images for Linux 2.2 kernels at the expense
    61 of some features. In particular, some filesystems (such as ext3) will not
    62 work properly and filesystem options will not be used to mount root. This
    63 option is not recommended, and will be removed in future versions.
    64
    65 .TP
    66 \fB-\-omit-lvm-modules
    67 Do not load any lvm modules, even if /etc/fstab expects them.
    68
    69 .TP
    70 \fB-\-omit-raid-modules
    71 Do not load any raid modules, even if /etc/fstab and /etc/raidtab expect them.
    72
    73 .TP
    74 \fB-\-omit-scsi-modules
    75 Do not load any scsi modules, including 'scsi_mod' and 'sd_mod'
    76 modules, even if they are present.
    77
    78 .TP
    79 \fB-\-preload=\fR\fImodule\fR
    80 Load the module \fImodule\fR in the initial ramdisk image. The module gets
    81 loaded before any SCSI modules which are specified in \fI/etc/modprobe.conf\fR.
    82 This option may be used as many times as necessary.
    83
    84 .TP
    85 \fB-v\fR
    86 Prints out verbose information while creating the image (normally
    87 the \fBmkinitrd\fR runs silently).
    88
    89 .TP
    90 \fB-\-version\fR
    91 Prints the version of \fBmkinitrd\fR that's being used and then exits.
    92
    93 .TP
    94 \fB-\-with=\fR\fImodule\fR
    95 Load the modules \fImodule\fR in the initial ramdisk image. The module
    96 gets loaded after any SCSI modules which are specified in
    97 \fI/etc/modprobe.conf\fR. This option may be used as many times as
    98 necessary.
    99
    100 .SH FILES
    101 .PD 0
    102 .TP 20
    103 \fI/dev/loop*\fR
    104 A block loopback device is used to create the image, which makes this
    105 script useless on systems without block loopback support available
    106 \fI(only used on kernels < 2.6)\fR
    107
    108 .TP 20
    109 \fI/etc/modprobe.conf\fR
    110 Specifies SCSI modules to be loaded and module options to be used.
    111
    112 .TP 20
    113 \fI/etc/modules.conf\fR
    114 Specifies SCSI modules to be loaded and module options to be used.
    115 \fI(only used on kernels < 2.6)\fR
    116
    117 .PD
    118 .SH "SEE ALSO"
    119 .BR fstab (5),
    120 .BR insmod (1),
    121 .BR kerneld (8),
    122 .BR lilo (8)
    123
    124 .SH AUTHOR
    125 .nf
    126 Erik Troan <ewt@redhat.com>
    127 .fi