dracut: add --kernel-only and --no-kernel arguments

       --kernel-only
              only install kernel drivers and firmware files

       --no-kernel
              do not install kernel drivers and firmware files

All kernel module related install commands moved from "install"
to "installkernel".

For "--kernel-only" all installkernel scripts of the specified
modules are used, regardless of any checks, so that all modules
which might be needed by any dracut generic image are in.

The basic idea is to create two images. One image with the kernel
modules and one without. So if the kernel changes, you only have
to replace one image.

Grub and the kernel can handle multiple images, so grub entry can
look like this:

title Fedora (2.6.29.5-191.fc11.i586)
        root (hd0,0)
        kernel /vmlinuz-2.6.29.5-191.fc11.i586 ro rhgb quiet
        initrd /initrd-20090722.img
        initrd /initrd-kernel-2.6.29.5-191.fc11.i586.img
        initrd /initrd-config.img

initrd-20090722.img
  the image provided by the initrd rpm
  one old backup version is kept like with the kernel

initrd-kernel-2.6.29.5-191.fc11.i586.img
  the image provided by the kernel rpm

initrd-config.img
  optional image with local configuration files

diff --git a/Makefile b/Makefile
index 2b1d003b545bfb4d90ac2ead2c2efed2dea135f3..490c163270256c82399c1a4abe5e972937ab2036 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -65,3 +65,12 @@ check: all
 testimage: all
        ./dracut -l -a debug -f test-$(shell uname -r).img $(shell uname -r)
        @echo wrote  test-$(shell uname -r).img 
+
+testimages: all
+       ./dracut -l -a debug --kernel-only -f test-kernel-$(shell uname -r).img $(shell uname -r)
+       @echo wrote  test-$(shell uname -r).img 
+       ./dracut -l -a debug --no-kernel -f test-dracut.img $(shell uname -r)
+       @echo wrote  test-dracut.img 
+       
+       
+

diff --git a/README.kernel b/README.kernel
new file mode 100644 (file)
index 0000000..f477ee5
--- /dev/null
+++ b/README.kernel
@@ -0,0 +1,6 @@
+dracut-kernel is used to pull in all firmware files to build an initrd with 
+only kernel modules and firmware files.
+
+dracut --kernel-only only executes "installkernel" in the modules 
+subdirectories.
+

diff --git a/dracut b/dracut
index bbc6a5dd13f86d729498eb366f044ca5dd2f7dbd..44296b84ea74ce5d8320c6f25de94f10ef967759 100755 (executable)
--- a/dracut
+++ b/dracut
@@ -23,8 +23,10 @@ Creates initial ramdisk images for preloading modules
   -d, --drivers [LIST]  Specify a space-separated list of kernel modules to
                          include in the initramfs.
   -k, --kmoddir [DIR]   Specify the directory, where to look for kernel modules
-  --fwdir [DIR]         Specify additional directory, where to look for 
-                        firmwares
+  --fwdir [DIR]         Specify additional directories, where to look for 
+                        firmwares, separated by :
+  --kernel-only         Only install kernel drivers and firmware files
+  --no-kernel           Do not install kernel drivers and firmware files
   -h, --help            This message
   --debug               Output debug information of the build process
   -v, --verbose         Verbose output during the build process
@@ -53,6 +55,8 @@ while (($# > 0)); do
        -d|--drivers) drivers_l="$2"; shift;;
        -k|--kmoddir) drivers_dir_l="$2"; shift;;
        --fwdir) fw_dir_l="$2"; shift;;
+       --kernel-only) kernel_only="yes"; nokernel="no";;
+       --no-kernel) kernel_only="no"; no_kernel="yes";;
        -h|--help) usage; exit 1 ;;
        --debug) debug="yes";;
        -v|--verbose) beverbose="yes";;
@@ -87,6 +91,7 @@ PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:$PATH
 [[ $drivers_dir_l ]] && drivers_dir=$drivers_dir_l
 [[ $fw_dir_l ]] && fw_dir=$fw_dir_l
 [[ $dracutbasedir ]] || dracutbasedir=/usr/share/dracut
+[[ $fw_dir ]] || fw_dir=/lib/firmware
 
 [[ $allowlocal && -f "$(dirname $0)/dracut-functions" ]] && dsrc="$(dirname $0)" || dsrc=$dracutbasedir
 
@@ -127,12 +132,14 @@ trap 'rm -rf "$initdir"' 0 # clean up after ourselves no matter how we die.
 chmod 755 "$initdir"
 
 export initdir hookdirs dsrc dracutmodules drivers \
-    fw_dir drivers_dir debug beverbose
+    fw_dir drivers_dir debug beverbose no_kernel kernel_only
 
-# Create some directory structure first
-for d in bin sbin usr/bin usr/sbin usr/lib etc proc sys sysroot tmp dev/pts var/run; do 
-    mkdir -p "$initdir/$d"; 
-done
+if [[ "$kernel_only" != "yes" ]]; then
+    # Create some directory structure first
+    for d in bin sbin usr/bin usr/sbin usr/lib etc proc sys sysroot tmp dev/pts var/run; do 
+       mkdir -p "$initdir/$d"; 
+    done
+fi
 
 # check all our modules to see if they should be sourced.
 # This builds a list of modules that we will install next.
@@ -142,7 +149,14 @@ check_modules
 for moddir in "$dsrc/modules.d"/[0-9][0-9]*; do
     mod=${moddir##*/}; mod=${mod#[0-9][0-9]}
     if strstr "$mods_to_load" " $mod "; then
-       . "$moddir/install"
+       if [[ "$kernel_only" = "yes" ]]; then
+           [[ -x "$moddir/installkernel" ]] && . "$moddir/installkernel"
+       else
+           . "$moddir/install"
+           if [[ "$no_kernel" != "yes" && -x "$moddir/installkernel" ]]; then
+               . "$moddir/installkernel"
+           fi
+       fi
        mods_to_load=${mods_to_load// $mod /}
     fi
 done

diff --git a/dracut-functions b/dracut-functions
index 2178dd74e693c9314ebd167fca5b882e753b81fc..6fef83aca8ace7fab7f14897346581aba34e365f 100755 (executable)
--- a/dracut-functions
+++ b/dracut-functions
@@ -1,8 +1,8 @@
 #!/bin/bash
 #
-# functions used by mkinitrd and other tools.
+# functions used by dracut and other tools.
 #
-# Copyright 2005-2008 Red Hat, Inc.  All rights reserved.
+# Copyright 2005-2009 Red Hat, Inc.  All rights reserved.
 #
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
@@ -17,10 +17,6 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
-# Authors:
-#       Peter Jones <pjones@redhat.com>
-#       Jeremy Katz <katzj@redhat.com>
-#       Jakub Jelinek <jakub@redhat.com>
 
 IF_RTLD=""
 IF_dynamic=""
@@ -238,6 +234,10 @@ check_module_deps() {
 should_source_module() {
     local dep
     [[ -x $1/install ]] || return 1
+    if [[ "$kernel_only" = "yes" ]]; then
+        [[ -x $1/installkernel ]] && return 0
+        return 1
+    fi
     [[ -x $1/check ]] || return 0
     "$1/check" $hostonly || return 1
     for dep in $("$1/check" -d); do
@@ -266,6 +266,7 @@ check_modules() {
 
 # install kernel modules, and handle installing all their dependencies as well.
 instmods() {
+    [[ "$no_kernel" = "yes" ]] && return
     local mod mpargs modpath modname cmd
     while (($# > 0)); do
        mod=${1%.ko}
@@ -294,7 +295,7 @@ instmods() {
                [[ $hostonly ]] && ! grep -q "$mod" /proc/modules && { 
                    shift; continue; 
                }
-                modprobe $mpargs --ignore-install --set-version $kernel \
+                modprobe $mpargs --ignore-install --set-version $kernel -d ${srcmods%%/lib/modules/*}/ \
                    --show-depends $mod 2>/dev/null | \
                    while read cmd modpath options; do
                    [[ $cmd = insmod ]] || continue
@@ -304,16 +305,20 @@ instmods() {
                        dinfo "Installing dependencies for $mod ($modpath)"
                        instmods $mpargs $modname
                    fi
-                   inst_simple "$modpath"
-               done
-               for fw in $(modinfo -F firmware $mod 2>/dev/null); do
-                   if [[ -n "$fw_dir" && -f $fw_dir/$fw ]]; then
-                       inst_simple "$fw_dir/$fw"
-                   elif [[ -f /lib/firmware/$fw ]]; then
-                       inst_simple "/lib/firmware/$fw"
-                   else
-                       dwarning "Possible missing firmware ${fw} for module ${mod}.ko"
-                   fi
+                   inst_simple "$modpath" "/lib/modules/$kernel/${modpath##*/lib/modules/$kernel/}"
+                   for fw in $(modinfo -k $kernel -F firmware $modpath 2>/dev/null); do
+                       unset found
+                       IFS=: 
+                       for fwdir in $fw_dir; do                    
+                           if [ -d "$fwdir" -a -f $fwdir/$fw ]; then
+                               inst_simple "$fwdir/$fw" "/lib/firmware/$fw"
+                               found=yes
+                           fi
+                       done
+                       if [ "$found" != "yes" ]; then
+                           dwarning "Possible missing firmware ${fw} for module ${mod}.ko"
+                       fi
+                   done
                done
                ;;
        esac      

diff --git a/dracut.8 b/dracut.8
index 23bea5ea6eb8eefa9c7a537e2eb415dfd3ddc77f..55a403773d0c1b8fb4755ca7bd8685ef75c0e7c6 100644 (file)
--- a/dracut.8
+++ b/dracut.8
@@ -36,6 +36,12 @@ specify the directory, where to look for kernel modules
 .BR " \-\-fwdir " \fI[DIR]\fR   
 specify additional directory, where to look for firmwares
 .TP
+.BR \-\-kernel-only
+only install kernel drivers and firmware files
+.TP
+.BR \-\-no-kernel
+do not install kernel drivers and firmware files
+.TP
 .BR \-h ", " \-\-help
 display help text and exit. 
 .TP

diff --git a/dracut.spec b/dracut.spec
index d74a521531e9e89f49e9bb7d5ca3a4e99a57beef..afd940b4bb03ddb74608f2086cc38258684e8d58 100644 (file)
--- a/dracut.spec
+++ b/dracut.spec
@@ -51,7 +51,6 @@ BuildArch: noarch
 %description
 dracut is a new, event-driven initramfs infrastructure based around udev.
 
-
 %package generic
 Summary: Metapackage to build a generic initramfs
 Requires: %{name} = %{version}-%{release}
@@ -60,16 +59,24 @@ Requires: iscsi-initiator-utils
 Requires: nbd
 Requires: bridge-utils
 Requires: net-tools iproute
+Requires: plymouth-system-theme plymouth-theme-charge plymouth-theme-solar
+
+%description generic
+This package requires everything which is needed to build a generic
+all purpose initramfs.
+
+%package kernel
+Summary: Metapackage to build generic initramfs with only kernel modules
+Requires: %{name} = %{version}-%{release}
 Requires: ql2100-firmware
 Requires: ql2200-firmware
 Requires: ql23xx-firmware
 Requires: ql2400-firmware
 Requires: ql2500-firmware
-Requires: plymouth-system-theme plymouth-theme-charge plymouth-theme-solar
 
-%description generic
-This package requires everything which is needed to build a generic
-all purpose initramfs.
+%description kernel
+This package requires everything which is needed to build a initramfs with all
+kernel modules and firmware files needed by dracut modules.
 
 %prep
 %setup -q -n %{name}-%{version}%{?dashgittag}
@@ -107,6 +114,10 @@ rm -rf $RPM_BUILD_ROOT
 %defattr(-,root,root,0755)
 %doc README.generic
 
+%files kernel 
+%defattr(-,root,root,0755)
+%doc README.kernel
+
 %changelog
 * Fri Jul 17 2009 Harald Hoyer <harald@redhat.com> 0.5-1
 - version 0.5

diff --git a/modules.d/40network/install b/modules.d/40network/install
index 79fbf57c5a76933dc8419be406b448082953b3a5..e66c72f801d26a86c0444edbb6fd3b17540e9d99 100755 (executable)
--- a/modules.d/40network/install
+++ b/modules.d/40network/install
@@ -1,22 +1,9 @@
 #!/bin/bash
 dracut_install ip dhclient hostname brctl
-# Include wired net drivers, excluding wireless
-for modname in $(find "$srcmods/kernel/drivers" -name '*.ko'); do
-  if nm -uPA $modname | grep -q eth_type_trans; then
-    if echo "$modname" | grep -q wireless; then
-      continue
-    else
-      instmods $modname 
-    fi
-  fi
-done
 inst "$moddir/ifup" "/sbin/ifup"
 inst "$moddir/netroot" "/sbin/netroot"
 inst "$moddir/dhclient-script" "/sbin/dhclient-script"
 inst "$moddir/dhclient.conf" "/etc/dhclient.conf" 
-instmods ecb arc4
-# bridge modules
-instmods bridge stp llc
 inst_hook pre-udev 60 "$moddir/net-genrules.sh"
 inst_hook cmdline 91 "$moddir/dhcp-root.sh"
 inst_hook cmdline 99 "$moddir/parse-ip-opts.sh"

diff --git a/modules.d/40network/installkernel b/modules.d/40network/installkernel
new file mode 100755 (executable)
index 0000000..96e87b1
--- /dev/null
+++ b/modules.d/40network/installkernel
@@ -0,0 +1,14 @@
+#!/bin/bash
+# Include wired net drivers, excluding wireless
+for modname in $(find "$srcmods/kernel/drivers" -name '*.ko'); do
+  if nm -uPA $modname | grep -q eth_type_trans; then
+    if echo "$modname" | grep -q wireless; then
+      continue
+    else
+      instmods $modname 
+    fi
+  fi
+done
+instmods ecb arc4
+# bridge modules
+instmods bridge stp llc

diff --git a/modules.d/50plymouth/install b/modules.d/50plymouth/install
index 89a0a0931fecbd529eae157025be92dc8669c483..eedf4f6ad1ae24c5d162aa9241af9726a846d6b2 100755 (executable)
--- a/modules.d/50plymouth/install
+++ b/modules.d/50plymouth/install
@@ -5,7 +5,3 @@ inst_hook pre-pivot 90 "$moddir"/plymouth-newroot.sh
 inst_hook pre-trigger 10 "$moddir"/plymouth-pretrigger.sh
 inst_hook emergency 50 "$moddir"/plymouth-emergency.sh
 inst "$moddir"/cryptroot-ask.sh /sbin/cryptroot-ask
-# Include KMS capable drm drivers
-for modname in $(find "$srcmods/kernel/drivers/gpu/drm" -name '*.ko'); do
-    nm -uPA $modname | grep -q drm_crtc_init && instmods $modname
-done

diff --git a/modules.d/50plymouth/installkernel b/modules.d/50plymouth/installkernel
new file mode 100755 (executable)
index 0000000..4b281e8
--- /dev/null
+++ b/modules.d/50plymouth/installkernel
@@ -0,0 +1,5 @@
+#!/bin/bash
+# Include KMS capable drm drivers
+for modname in $(find "$srcmods/kernel/drivers/gpu/drm" -name '*.ko'); do
+    nm -uPA $modname | grep -q drm_crtc_init && instmods $modname
+done

diff --git a/modules.d/90crypt/install b/modules.d/90crypt/install
index 9ffe90e4f2337936469bf609a0b9608a50f83494..13195039505138b5ee8381168ccbff5423eb9dcb 100755 (executable)
--- a/modules.d/90crypt/install
+++ b/modules.d/90crypt/install
@@ -1,6 +1,5 @@
 #!/bin/bash
 inst cryptsetup
-instmods dm_crypt cbc aes sha256 xts
 inst_rules "$moddir/70-luks.rules"
 inst "$moddir"/cryptroot-ask.sh /sbin/cryptroot-ask
 inst_hook cmdline 30 "$moddir/parse-crypt.sh"

diff --git a/modules.d/90crypt/installkernel b/modules.d/90crypt/installkernel
new file mode 100755 (executable)
index 0000000..7a58ea3
--- /dev/null
+++ b/modules.d/90crypt/installkernel
@@ -0,0 +1,2 @@
+#!/bin/bash
+instmods dm_crypt cbc aes sha256 xts

diff --git a/modules.d/90kernel-modules/install b/modules.d/90kernel-modules/install
index e6db3e16bf4983b3904556a2c67ef30a999dd3d9..b3fb0df118ef86543894bbbeb01dbd598729a5b1 100755 (executable)
--- a/modules.d/90kernel-modules/install
+++ b/modules.d/90kernel-modules/install
@@ -1,13 +1,3 @@
 #!/bin/bash
-if [ -z "$drivers" ]; then
-  drivers="sd_mod =fs"
-  # Include block controller drivers
-  for modname in $(find "$srcmods/kernel/drivers" -name '*.ko'); do
-    if nm -uPA $modname | egrep -q 'ata_scsi_ioctl|scsi_add_host|blk_init_queue|register_mtd_blktrans|scsi_esp_register'; then
-      drivers="${drivers} $modname"
-    fi
-  done
-fi
-instmods $drivers
 [ -f /etc/modprobe.conf ] && dracut_install /etc/modprobe.conf
 dracut_install $(find /etc/modprobe.d/ -type f -name '*.conf')

diff --git a/modules.d/90kernel-modules/installkernel b/modules.d/90kernel-modules/installkernel
new file mode 100755 (executable)
index 0000000..d86f3fb
--- /dev/null
+++ b/modules.d/90kernel-modules/installkernel
@@ -0,0 +1,11 @@
+#!/bin/bash
+if [ -z "$drivers" ]; then
+  drivers="sd_mod =fs"
+  # Include block controller drivers
+  for modname in $(find "$srcmods/kernel/drivers" -name '*.ko'); do
+    if nm -uPA $modname | egrep -q 'ata_scsi_ioctl|scsi_add_host|blk_init_queue|register_mtd_blktrans|scsi_esp_register'; then
+      drivers="${drivers} $modname"
+    fi
+  done
+fi
+instmods $drivers

diff --git a/modules.d/90mdraid/install b/modules.d/90mdraid/install
index 2303f5d08ac74e9af986b3e00a1a9127e08180a2..07ca96c06908152efa2643af6ccaf6a07c670ab5 100755 (executable)
--- a/modules.d/90mdraid/install
+++ b/modules.d/90mdraid/install
@@ -11,8 +11,6 @@ dracut_install mdadm partx
 # inst /etc/passwd
 # inst /etc/group
 
-instmods =drivers/md
-
 if [ -x /lib/udev/vol_id ]; then
     inst_rules "$moddir/61-mdadm.rules"
 else

diff --git a/modules.d/90mdraid/installkernel b/modules.d/90mdraid/installkernel
new file mode 100755 (executable)
index 0000000..d26bafa
--- /dev/null
+++ b/modules.d/90mdraid/installkernel
@@ -0,0 +1,3 @@
+#!/bin/bash
+instmods =drivers/md
+

diff --git a/modules.d/95iscsi/install b/modules.d/95iscsi/install
index 7f8c2e276d187e24fd0a1ea56e6b03793e995e37..6386410b4d3a35f17ed82a26b33482b8930abb5d 100755 (executable)
--- a/modules.d/95iscsi/install
+++ b/modules.d/95iscsi/install
@@ -6,4 +6,3 @@ inst iscsi-iname
 inst_hook cmdline 90 "$moddir/parse-iscsiroot.sh"
 inst "$moddir/iscsiroot" "/sbin/iscsiroot"
 inst "$moddir/mount-lun.sh" "/bin/mount-lun.sh"
-instmods iscsi_tcp crc32c

diff --git a/modules.d/95iscsi/installkernel b/modules.d/95iscsi/installkernel
new file mode 100755 (executable)
index 0000000..1dcf19a
--- /dev/null
+++ b/modules.d/95iscsi/installkernel
@@ -0,0 +1,2 @@
+#!/bin/bash
+instmods iscsi_tcp crc32c

diff --git a/modules.d/95nbd/install b/modules.d/95nbd/install
index 0b87def60e516b56f19d7c70a07b069b9bfdd633..195c27e5d4960637d43bf96c6a905022305c97c3 100755 (executable)
--- a/modules.d/95nbd/install
+++ b/modules.d/95nbd/install
@@ -9,4 +9,3 @@ else
 fi
 
 inst "$moddir/nbdroot" "/sbin/nbdroot"
-instmods nbd

diff --git a/modules.d/95nbd/installkernel b/modules.d/95nbd/installkernel
new file mode 100755 (executable)
index 0000000..c8eea5e
--- /dev/null
+++ b/modules.d/95nbd/installkernel
@@ -0,0 +1,2 @@
+#!/bin/bash
+instmods nbd

diff --git a/modules.d/95nfs/install b/modules.d/95nfs/install
index 2e96e5daaf1be73a1cf241f9ce4e73761de04d11..7f96cc75c7ab466fe2a3bbdd35446c477d940bd4 100755 (executable)
--- a/modules.d/95nfs/install
+++ b/modules.d/95nfs/install
@@ -16,7 +16,6 @@ fi
 dracut_install $(ls {/usr,}$LIBDIR/libnfsidmap*.so* 2>/dev/null )
 dracut_install $(ls {/usr,}$LIBDIR/libnss*.so 2>/dev/null)
 
-instmods nfs sunrpc ipv6
 inst_hook cmdline 90 "$moddir/parse-nfsroot.sh"
 inst_hook pre-pivot 70 "$moddir/nfsroot-cleanup.sh"
 inst "$moddir/nfsroot" "/sbin/nfsroot"

diff --git a/modules.d/95nfs/installkernel b/modules.d/95nfs/installkernel
new file mode 100755 (executable)
index 0000000..fa31aa2
--- /dev/null
+++ b/modules.d/95nfs/installkernel
@@ -0,0 +1,2 @@
+#!/bin/bash
+instmods nfs sunrpc ipv6