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- dracut.8: added more documentation about executing dracut
This commit is contained in:
Harald Hoyer 2012-07-23 08:30:53 +02:00
parent 60a1f9a368
commit 762076093e
4 changed files with 244 additions and 1 deletions
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83
0002-dracut.8-add-more-description-about-calling-dracut.patch Normal file
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@ -0,0 +1,83 @@
From 4c3be42cdf4c49785298ddb6b34beed1c8cc9d40 Mon Sep 17 00:00:00 2001
From: Harald Hoyer <harald@redhat.com>
Date: Sat, 21 Jul 2012 12:52:01 +0200
Subject: [PATCH] dracut.8: add more description about calling dracut
---
dracut.8.asc | 56 +++++++++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 55 insertions(+), 1 deletion(-)
diff --git a/dracut.8.asc b/dracut.8.asc
index 0cd1663..24af936 100644
--- a/dracut.8.asc
+++ b/dracut.8.asc
@@ -14,6 +14,12 @@ SYNOPSIS
DESCRIPTION
-----------
+
+Create an initramfs <image> for the kernel with the version <kernel version>.
+If <kernel version> is omitted, then the version of the actual running
+kernel is used. If <image> is omitted or empty, then the default location
+/boot/initramfs-<kernel version>.img is used.
+
dracut creates an initial image used by the kernel for preloading the block
device modules (such as IDE, SCSI or RAID) which are needed to access the root
filesystem, mounting the root filesystem and booting into the real system.
@@ -22,7 +28,55 @@ At boot time, the kernel unpacks that archive into RAM disk, mounts and uses it
as initial root file system. All finding of the root device happens in this
early userspace.
-For a complete list of kernel command line options see *dracut.cmdline*(7)
+For a complete list of kernel command line options see *dracut.cmdline*(7).
+
+EXAMPLE
+-------
+
+To create a initramfs image, the most simple command is:
+----
+# dracut
+----
+
+This will generate a general purpose initramfs image, with all possible
+functionality resulting of the combination of the installed dracut modules and
+system tools. The image is /boot/initramfs-_++<kernel version>++_.img and
+contains the kernel modules of the currently active kernel with version
+_++<kernel version>++_.
+
+If the initramfs image already exists, dracut will display an error message, and
+to overwrite the existing image, you have to use the --force option.
+----
+# dracut --force
+----
+
+If you want to specify another filename for the resulting image you would issue
+a command like:
+----
+# dracut foobar.img
+----
+
+To generate an image for a specific kernel version, the command would be:
+----
+# dracut foobar.img 2.6.40-1.rc5.f20
+----
+
+A shortcut to generate the image at the default location for a specific kernel
+version is:
+----
+# dracut --kver 2.6.40-1.rc5.f20
+----
+
+If you want to create lighter, smaller initramfs images, you may want to specify
+the --host-only or -H option. Using this option, the resulting image will
+contain only those dracut modules, kernel modules and filesystems, which are
+needed to boot this specific machine. This has the drawback, that you can't put
+the disk on another controller or machine, and that you can't switch to another
+root filesystem, without recreating the initramfs image. The usage of the
+--host-only option is only for experts and you will have to keep the broken
+pieces. At least keep a copy of a general purpose image (and corresponding
+kernel) as a fallback to rescue your system.
+
OPTIONS
-------

100
0003-AUTHORS-update.patch Normal file
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@ -0,0 +1,100 @@
From e5ec81a3543332ff31441647c99e202c25a59664 Mon Sep 17 00:00:00 2001
From: Harald Hoyer <harald@redhat.com>
Date: Sat, 21 Jul 2012 12:55:23 +0200
Subject: [PATCH] AUTHORS: update
---
AUTHORS | 26 ++++++++++++++++++--------
1 file changed, 18 insertions(+), 8 deletions(-)
diff --git a/AUTHORS b/AUTHORS
index f7a1007..c4ed2e8 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -1,16 +1,16 @@
Harald Hoyer <harald@redhat.com>
Victor Lowther <victor.lowther@gmail.com>
+Amadeusz Żołnowski <aidecoe@aidecoe.name>
Philippe Seewer <philippe.seewer@bfh.ch>
Warren Togami <wtogami@redhat.com>
-Amadeusz Żołnowski <aidecoe@aidecoe.name>
+Will Woods <wwoods@redhat.com>
Jeremy Katz <katzj@redhat.com>
David Dillow <dave@thedillows.org>
-Will Woods <wwoods@redhat.com>
Michal Soltys <soltys@ziu.info>
-Dave Young <dyoung@redhat.com>
Amerigo Wang <amwang@redhat.com>
-Andrey Borzenkov <arvidjaar@gmail.com>
+Dave Young <dyoung@redhat.com>
Colin Guthrie <colin@mageia.org>
+Andrey Borzenkov <arvidjaar@gmail.com>
Andreas Thienemann <andreas@bawue.net>
Hans de Goede <hdegoede@redhat.com>
Peter Jones <pjones@redhat.com>
@@ -18,30 +18,34 @@ John Reiser <jreiser@bitwagon.com>
Luca Berra <bluca@vodka.it>
Daniel Drake <dsd@laptop.org>
Marc Grimme <grimme@atix.de>
+Brian C. Lane <bcl@redhat.com>
Dan Horák <dhorak@redhat.com>
+Jesse Keating <jkeating@redhat.com>
Roberto Sassu <roberto.sassu@polito.it>
Anton Blanchard <anton@samba.org>
Bill Nottingham <notting@redhat.com>
-Brian C. Lane <bcl@redhat.com>
David Cantrell <dcantrell@redhat.com>
+Jon Ander Hernandez <jonan.h@gmail.com>
+Juan RP <xtraeme@gmail.com>
Lance Albertson <lance@osuosl.org>
Marian Ganisin <mganisin@redhat.com>
Michael Ploujnikov <plouj@somanetworks.com>
+Peter Rajnoha <prajnoha@redhat.com>
Alan Jenkins <alan-jenkins@tuffmail.co.uk>
Alan Pevec <apevec@redhat.com>
Ian Dall <ian@beware.dropbear.id.au>
James Buren <ryuo@frugalware.org>
Joey Boggs <jboggs@redhat.com>
-Jon Ander Hernandez <jonan.h@gmail.com>
Mike Snitzer <snitzer@redhat.com>
-Peter Rajnoha <prajnoha@redhat.com>
Przemysław Rudy <prudy1@o2.pl>
+Thomas Lange <lange@informatik.uni-koeln.de>
Vladislav Bogdanov <bubble@hoster-ok.com>
Alexander Todorov <atodorov@redhat.com>
Andy Lutomirski <luto@mit.edu>
Anssi Hannula <anssi@mageia.org>
Christian Heinz <christian.ch.heinz@gmail.com>
Dave Jones <davej@redhat.com>
+Dennis Gilmore <dennis@ausil.us>
Duane Griffin <duaneg@dghda.com>
Frederic Crozat <fcrozat@mandriva.com>
Glen Gray <slaine@slaine.org>
@@ -50,20 +54,26 @@ James Laska <jlaska@redhat.com>
Jan Stodola <jstodola@redhat.com>
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Leho Kraav <leho@kraav.com>
+Lennert Buytenhek <buytenh@wantstofly.org>
Lubomir Rintel <lkundrak@v3.sk>
Matt <smoothsailing72@hotmail.com>
Matt Smith <shadowfax@gmx.com>
Michal Schmidt <mschmidt@redhat.com>
+Milan Broz <mbroz@redhat.com>
Munehiro Matsuda <haro@kgt.co.jp>
+Nikoli <nikoli@lavabit.com>
+Olivier Blin <dev@blino.org>
Paolo Bonzini <pbonzini@redhat.com>
Peter Robinson <pbrobinson@fedoraproject.org>
Pádraig Brady <P@draigBrady.com>
Quentin Armitage <quentin@armitage.org.uk>
Sergey Fionov <fionov@gmail.com>
+Srinivasa T N <seenutn@linux.vnet.ibm.com>
Thilo Bangert <thilo.bangert@gmx.net>
-Thomas Lange <lange@informatik.uni-koeln.de>
Tomasz Torcz <tomek@pipebreaker.pl>
Vadim Kuznetsov <vadimk@gentoo.org>
Ville Skyttä <ville.skytta@iki.fi>
+Vivek Goyal <vgoyal@redhat.com>
+Wim Muskee <wimmuskee@gmail.com>
Yanko Kaneti <yaneti@declera.com>
maximilian attems <max@stro.at>

54
0004-dracut.sh-add-N-option-for-no-hostonly.patch Normal file
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@ -0,0 +1,54 @@
From 472189da152be23b8a7d0dabc0a3e80ea61e866b Mon Sep 17 00:00:00 2001
From: Harald Hoyer <harald@redhat.com>
Date: Sat, 21 Jul 2012 13:03:56 +0200
Subject: [PATCH] dracut.sh: add -N option for --no-hostonly
---
dracut.8.asc | 2 +-
dracut.sh | 6 +++---
2 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/dracut.8.asc b/dracut.8.asc
index 24af936..0902b3b 100644
--- a/dracut.8.asc
+++ b/dracut.8.asc
@@ -308,7 +308,7 @@ If chrooted to another root other than the real root device, use "--fstab" and
provide a valid _/etc/fstab_.
====
-**--no-hostonly**::
+**-N, --no-hostonly**::
Disable Host-Only mode
**--fstab**::
diff --git a/dracut.sh b/dracut.sh
index ffdcbcc..d8b3354 100755
--- a/dracut.sh
+++ b/dracut.sh
@@ -126,7 +126,7 @@ Creates initial ramdisk images for preloading modules
Useful when running dracut from a git checkout.
-H, --hostonly Host-Only mode: Install only what is needed for
booting the local host instead of a generic host.
- --no-hostonly Disables Host-Only mode
+ -N, --no-hostonly Disables Host-Only mode
--fstab Use /etc/fstab to determine the root device.
--add-fstab [FILE] Add file to the initramfs fstab
--mount "[DEV] [MP] [FSTYPE] [FSOPTS]"
@@ -244,7 +244,7 @@ set -- "${@/--include/++include}"
set -- "${@/%-i/++include}"
TEMP=$(unset POSIXLY_CORRECT; getopt \
- -o "a:m:o:d:I:k:c:L:fvqlHhM" \
+ -o "a:m:o:d:I:k:c:L:fvqlHhMN" \
--long kver: \
--long add: \
--long force-add: \
@@ -356,7 +356,7 @@ while :; do
&& dracutbasedir="$(readlink -f ${0%/*})"
;;
-H|--hostonly) hostonly_l="yes" ;;
- --no-hostonly) hostonly_l="no" ;;
+ -N|--no-hostonly) hostonly_l="no" ;;
--fstab) use_fstab_l="yes" ;;
-h|--help) long_usage; exit 1 ;;
-i|--include) push include_src "$2"

8
dracut.spec
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@ -10,7 +10,7 @@
Name: dracut
Version: 022
Release: 2.git20120720%{?dist}
Release: 5.git20120723%{?dist}
Summary: Initramfs generator using udev
%if 0%{?fedora} || 0%{?rhel}
@ -30,6 +30,9 @@ URL: https://dracut.wiki.kernel.org/
# http://git.kernel.org/?p=boot/dracut/dracut.git;a=snapshot;h=%{version};sf=tgz
Source0: http://www.kernel.org/pub/linux/utils/boot/dracut/dracut-%{version}.tar.bz2
Patch1: 0001-resume-move-resume-in-the-initqueue-finished-hook.patch
Patch2: 0002-dracut.8-add-more-description-about-calling-dracut.patch
Patch3: 0003-AUTHORS-update.patch
Patch4: 0004-dracut.sh-add-N-option-for-no-hostonly.patch
BuildRequires: dash bash git
@ -358,6 +361,9 @@ rm -rf $RPM_BUILD_ROOT
%dir /var/lib/dracut/overlay
%changelog
* Mon Jul 23 2012 Harald Hoyer <harald@redhat.com> 022-5.git20120723
- dracut.8: added more documentation about executing dracut
* Fri Jul 20 2012 Harald Hoyer <harald@redhat.com> 022-2.git20120720
- fixed some race condition for resume from hibernation