- improved nfsroo parsing

- added rootdelay and rootfstype bootargs
- document this changes
- initrd-tools backward compatible mdadm assembe and then run mdrun
- update-initramfs really checkout use_bootloader from /etc/kernel-img.conf
- tighter klibc deps

debian/NEWS

@@ -1,3 +1,16 @@
+initramfs-tools (0.76) unstable; urgency=low
+
+  * This release features nfs auto detection in the initramfs.
+    The boot paramaters are parsed according to the linux source
+    Documentation/kernel-parameters.txt and more specifically
+    Documentation/nfsroot.txt.
+
+    The initramfs-tools(8) manpage documents the parsed boot parameter.
+    Note that the undocumented and non compliant nfsoption bootarg got
+    dropped.
+
+ -- maximilian attems <maks@sternwelten.at>  Wed, 23 Aug 2006 08:47:26 +0200
+
 initramfs-tools (0.61) unstable; urgency=low
 
   * This release moves the initramfs-tools confdir from /etc/mkinitramfs to

debian/changelog

@@ -1,3 +1,42 @@
+initramfs-tools (0.76) unstable; urgency=medium
+
+  * debian/control: Tighten klibc to 1.4.19-2 for fixed nuke. (closes: 383730)
+
+  * mkinitramfs: Only hard code root when root arg got passed.
+
+  * init: Parse /proc/cmdline for rootfstype, initrd-tools did it too.
+
+  * init: Parse /proc/cmdline for rootdelay.
+
+  * scripts/local: Use eventual rootfstype and rootdelay info.
+
+  * initramfs-tools.8: Add more docs about boot args, s/2.6.15/2.6.17/.
+
+  * scripts/functions: Simplify parse_numeric() by arithmetic calculation,
+    instead of working on it's representation. Thanks to tarski.
+    (launchpad.net/21759) Much more elegant than the 0.58 version fix.
+
+  * mkinitramfs: Parse rootraid for sarge compatibility and pass the info
+    to the initramfs if etch mdadm is not yet installed.
+
+  * scripts/local-top/mdrun: Assemble the root raid first before mdrun.
+    Thanks martin f krafft <madduck@debian.org>. (closes: 383908, 384063)
+
+  * update-initramfs: Check if /etc/kernel-img.conf is readable,
+    before attempting to parse also check for the right field.
+
+  * init: Check for root=/dev/nfs. Parse ip kernel command line for nfsroot.
+    Drop undocumented and not compliant nfsopts.
+
+  * scripts/nfs: Add ip parsing conforming to Documentation/nfsroot.txt.
+    Use the nfsroot bootparam in combination with eventual ip provided
+    device or server-ip. Do minor code cleanups. Both items based on patches
+    by Vagrant Cascadian <vagrant+bugs@freegeek.org>. (closes: 380649)
+
+  * Set urgency medium due to large number of serious bug fixes.
+
+ -- maximilian attems <maks@sternwelten.at>  Wed, 23 Aug 2006 08:17:51 +0200
+
 initramfs-tools (0.75) unstable; urgency=high
 
   * hook-functions: Add megaraid_sas to the scsi list. Thanks Kenshi Muto

debian/control

@@ -8,7 +8,7 @@ Standards-Version: 3.7.2.0
 
 Package: initramfs-tools
 Architecture: all
-Depends: klibc-utils (>= 1.4.11-1), busybox (>= 1:1.01-3) | busybox-cvs-static (>= 20040623-1), cpio, module-init-tools, udev (>= 0.086-1)
+Depends: klibc-utils (>= 1.4.19-2), busybox (>= 1:1.01-3) | busybox-cvs-static (>= 20040623-1), cpio, module-init-tools, udev (>= 0.086-1)
 Provides: linux-initramfs-tool
 Description: tools for generating an initramfs
  This package contains tools to create and boot an initramfs for packaged 2.6

init

@@ -59,19 +59,28 @@ for x in $(cat /proc/cmdline); do
 		UUID=*)
 			ROOT="/dev/disk/by-uuid/${ROOT#UUID=}"
 			;;
+		/dev/nfs)
+			BOOT=nfs
+			;;
 		esac
 		;;
 	rootflags=*)
 		ROOTFLAGS="-o ${x#rootflags=}"
 		;;
+	rootfstype=*)
+		ROOTFSTYPE="${x#rootfstype=}"
+		;;
+	rootdelay=*)
+		ROOTDELAY="${x#rootdelay=}"
+		;;
 	cryptopts=*)
 		cryptopts="${x#cryptopts=}"
 		;;
 	nfsroot=*)
 		NFSROOT="${x#nfsroot=}"
 		;;
-	nfsopts=*)
-		NFSOPTS="-o ${x#nfsopts=}"
+	ip=*)
+		IPOPTS="${x#ip=}"
 		;;
 	boot=*)
 		BOOT=${x#boot=}

initramfs-tools.8

@@ -1,4 +1,4 @@
-.TH INITRAMFS-TOOLS 8  "Date: 2005/12/06" "" "mkinitramfs script overview"
+.TH INITRAMFS-TOOLS 8  "Date: 2006/08/19" "" "mkinitramfs script overview"
 
 .SH NAME
 initramfs-tools \- an introduction to writing scripts for mkinitramfs
@@ -29,18 +29,44 @@ arguments which influence the boot procedure:
 
 .SS Boot options
 
+The init and root are usually passed by the boot loader for local boot.
+The other parameters are optional.
+
 .TP
 \fB \fI init
 the binary to hand over execution to on the root fs after the initramfs scripts are done.
 
 .TP
 \fB \fI root
-the device node to mount as the rootfs.
+the device node to mount as the root file system.
+
+.TP
+\fB \fI rootdelay
+set delay in seconds. Determines how long mountroot waits for root to appear.
+
+.TP
+\fB \fI rootflags
+set the file system mount option string.
+
+.TP
+\fB \fI rootfstype
+set the root file system type.
 
 .TP
 \fB \fI nfsroot
 can be either "auto" to try to get the relevant information from DHCP or a
-string of the form NFSSERVER:NFSPATH
+string of the form NFSSERVER:NFSPATH or NFSSERVER:NFSPATH:NFSOPTS.
+Use root=/dev/nfs for NFS to kick to in.
+
+.TP
+\fB \fI ip
+tells how to configure the ip adress. Allows to specify an different
+NFS server than the DHCP server. See Documentation/nfsroot.txt in
+any recent linux source for details. Optional paramater for NFS root.
+
+.TP
+\fB \fI cryptopts
+passes the args for cryptoroot. Set by the cryptsetup boot hooks.
 
 .TP
 \fB \fI boot
@@ -50,27 +76,33 @@ either local or NFS (affects which initramfs scripts are run, see the "Subdirect
 \fB \fI resume
 On install initramfs-tools tries to autodetect the resume partition. On success
 the RESUME variable is written to /etc/initramfs-tools/conf.d/resume.
-The boot variable overrides it.
+The boot variable noresume overrides it.
 
 .TP
 \fB \fI quiet
-reduces the amount of text output to the console during boot
+reduces the amount of text output to the console during boot.
 
 .TP
 \fB \fI ro
-mounts the rootfs read-only
+mounts the rootfs read-only.
 
 .TP
 \fB \fI rw
-mounts the rootfs read-write
+mounts the rootfs read-write.
+
+.TP
+\fB \fI panic
+sets an timeout on panic. Currently only zero value supported.
 
 .TP
 \fB \fI debug
-generates lots of output to /tmp/initramfs.debug
+generates lots of output to /tmp/initramfs.debug.
 
 .TP
 \fB \fI break
 spawns a shell in the initramfs image at chosen run-time
+(top, modules, premount, mount, bottom, init).
+The default is premount without any arg.
 
 
 .SH HOOK SCRIPTS
@@ -404,7 +436,7 @@ to double-check if it contains the relevant binaries, libs or modules:
 .nf
 mkdir tmp/initramfs
 cd tmp/initramfs
-gunzip -c -9 /boot/initrd.img-2.6.15-1-686 | \\
+gunzip -c -9 /boot/initrd.img-2.6.17-2-686 | \\
 cpio -i -d -H newc --no-absolute-filenames
 .fi
 .RE

mkinitramfs

@@ -209,7 +209,11 @@ for i in ${EXTRA_CONF}; do
 		copy_exec "/usr/share/initramfs-tools/conf.d/${i}" /conf/conf.d
 	fi
 done
-echo "ROOT=${ROOT}" > ${DESTDIR}/conf/conf.d/root
+
+# ROOT hardcoding
+if [ -n "${ROOT}" ]; then
+	echo "ROOT=${ROOT}" > ${DESTDIR}/conf/conf.d/root
+fi
 
 # Busybox
 if [ "x${BUSYBOX}" = "xn" ]; then
@@ -233,7 +237,18 @@ run_scripts "${CONFDIR}"/hooks
 
 # FIXME: Remove this Raid block after Etch releases
 if [ -x /sbin/mdadm -a ! -f /usr/share/initramfs-tools/hooks/mdadm ]; then
-	mdadm --examine --scan > $DESTDIR/conf/mdadm.conf
+	# use mkinitrd magic for Sarge backwards compat
+	rootraiddev="$(df / | sed -rne 's,^(/dev/[^[:space:]]+).*,\1,p')"
+	echo "rootraiddev=${rootraiddev}" > /conf/mdadm.conf
+	mdadm=$(mdadm --detail "${rootraiddev}")
+	echo "${mdadm}" | awk '
+		$1 == "Number" && $2 == "Major" { start = 1; next } 
+		$1 == "UUID" { print "uuid=" $3; next } 
+		!start { next } 
+		$2 == 0 && $3 == 0 { next } 
+		{ devices = devices " " $NF } 
+		END { print "devices='\''" devices "'\''" }' \
+		>> /conf/mdadm.conf
 	copy_exec /sbin/mdadm /sbin
 	copy_exec /sbin/mdrun /sbin
 	for x in md linear multipath raid0 raid1 raid456 raid5 raid6 raid10; do

scripts/functions

@@ -224,13 +224,10 @@ parse_numeric() {
 		minor=${1#*:}
 		major=${1%:*}
 		;;
-	[0-9][0-9][0-9])
-		minor=$((0x${1#?}))
-		major=$((0x${1%??}))
-		;;
 	*)
-		minor=$((0x${1#??}))
-		major=$((0x${1%??}))
+		value=$(( 0x${1} ))
+		minor=$(( ${value} % 256 ))
+		major=$(( ${value} / 256 ))
 		;;
 	esac
 

scripts/local

@@ -11,11 +11,18 @@ mountroot ()
 	# to deal with removable devices
 	if [ ! -e "${ROOT}" ]; then
 		log_begin_msg "Waiting for root file system..."
+
+		# Default delay is 180s
+		if [ -z "${ROOTDELAY}" ]; then
+			slumber=180
+		else
+			slumber=${ROOTDELAY}
+		fi
 		if [ -x /sbin/usplash_write ]; then
-			/sbin/usplash_write "TIMEOUT 180" || true
+			/sbin/usplash_write "TIMEOUT ${slumber}" || true
 		fi
 
-		slumber=1800
+		slumber=$(( ${slumber} * 10 ))
 		while [ ${slumber} -gt 0 -a ! -e "${ROOT}" ]; do
 			/bin/sleep 0.1
 			slumber=$(( ${slumber} - 1 ))
@@ -38,8 +45,12 @@ mountroot ()
 		panic "ALERT!  ${ROOT} does not exist.  Dropping to a shell!"
 	done
 
-	# Get the root filesystem type
-	eval $(fstype < ${ROOT})
+	# Get the root filesystem type if not set
+	if [ -z "${ROOTFSTYPE}" ]; then
+		eval $(fstype < ${ROOT})
+	else 
+		FSTYPE=${ROOTFSTYPE}
+	fi
 
 	[ "$quiet" != "y" ] && log_begin_msg "Running /scripts/local-premount"
 	run_scripts /scripts/local-premount

scripts/local-top/mdrun

@@ -36,6 +36,11 @@ done
 
 [ "${gotraid}" = y ] || exit
 
-# Assemble all raid devices
-# FIXME: assemble root raid first due to initrd-tools compatibility
+# source the presumed root md and it's info
+. ./conf/mdadm.conf
+
+# assemble root raid first due to initrd-tools compatibility
+mdadm -A ${rootraiddev} -R -u $uuid $devices
+
+# assemble all raid devices
 /sbin/mdrun /dev

scripts/nfs

@@ -13,13 +13,57 @@ mountroot ()
 	# For DHCP
 	modprobe -q af_packet
 
-	ipconfig ${DEVICE}
+	# support ip options see linux sources Documentation/nfsroot.txt
+	case ${IPOPTS} in
+		none|off)
+			# Do nothing
+			;;
+		""|on|any)
+			# Bring up device
+			ipconfig ${DEVICE}
+			;;
+		dhcp|bootb|rarp|both)
+			ipconfig -c ${IPOPTS} -d ${DEVICE}
+			;;
+		*)
+			ipconfig -d $IPOPTS
+
+			# grab device entry from full line
+			NEW_DEVICE=${IPOPTS#*:*:*:*:*:*}
+			NEW_DEVICE=${NEW_DEVICE%:*}
+			if [ -n "${NEW_DEVICE}" ]; then
+				DEVICE="${NEW_DEVICE}"
+			fi
+			# grab server-ip
+			SERVER_IP=${IPOPTS#*:}
+			SERVER_IP=${SERVER_IP%:*:*:*:*:*:*}
+			;;
+	esac
+			
+	# FIXME: who writes that?
 	. /tmp/net-${DEVICE}.conf
+
+	# get nfs root from dhcp
 	if [ "x${NFSROOT}" = "xauto" ]; then
 		NFSROOT=${ROOTSERVER}:${ROOTPATH}
+	# nfsroot=[<server-ip>:]<root-dir>[,<nfs-options>]
+	elif [ -n "${NFSROOT}" ]; then
+		# nfs options are an optional arg
+		if [ "${NFSROOT#*,}" != "${NFSROOT}" ]; then
+			NFSOPTS="-o ${NFSROOT#*,}"
+		fi
+		NFSROOT=${NFSROOT%%,*}
+		# server-ip could be passed by ip
+		if [ "${NFSROOT#*:}" = "$NFSROOT" ]; then
+			if [ -n "${SERVER_IP}" ]; then
+				NFSROOT="${SERVER_IP}:${NFSROOT}"
+			else
+				NFSROOT=${ROOTSERVER}:${ROOTPATH}
+			fi
+		fi
 	fi
 
-	if [ "x${NFSOPTS}" = "x" ]; then
+	if [ -z "${NFSOPTS}" ]; then
 		NFSOPTS="-o retrans=10"
 	fi
 

update-initramfs

@@ -2,6 +2,7 @@
 
 STATEDIR=/var/lib/initramfs-tools
 BOOTDIR=/boot
+KPKGCONF=/etc/kernel-img.conf
 
 set -e
 
@@ -96,8 +97,8 @@ run_bootloader()
 {
 	if [ -x /sbin/grub -o -e /boot/grub/menu.lst ]; then
 		if [ -e /etc/lilo.conf ]; then
-			do_b=$(awk  '/bootloader/{print $2}' \
-				/etc/kernel-img.conf)
+			[ -r "${KPKGCONF}" ] && \
+			do_b=$(awk  '/bootloader/{print $3}' "${KPKGCONF}")
 			if [ "${do_b}" = "yes" ] || [ "${do_b}" = "Yes" ] \
 				|| [ "${do_b}" = "YES" ]; then
 				run_lilo