From ae26d0465a234d7b340566287908c78fe24901e1 Mon Sep 17 00:00:00 2001 From: "Manuel Amador (Rudd-O)" Date: Thu, 17 Mar 2011 15:18:13 -0700 Subject: Add dracut support To simplify the process of using zfs as your root filesystem a zfs-drucat sub-package has been added. This sub-package adds a zfs dracut module which allows your initramfs to be rebuilt with zfs support. The process for doing this is still complicated but there is clearly interest from the community about getting this working well and documented. This should help lay some of the groundwork. Longer term these changes should be pushed in the upstream dracut package. Once that occurs this subpackage will no longer be required for new systems, however we may want to conditionally build this package in the future for systems running older dracut versions. Signed-off-by: Brian Behlendorf --- dracut/90zfs/90-zfs.rules | 7 + dracut/90zfs/Makefile.am | 27 +++ dracut/90zfs/Makefile.in | 533 +++++++++++++++++++++++++++++++++++++++++++ dracut/90zfs/check | 10 + dracut/90zfs/install | 17 ++ dracut/90zfs/installkernel | 10 + dracut/90zfs/mount-zfs.sh | 10 + dracut/90zfs/parse-zfs.sh | 23 ++ dracut/90zfs/zfs-genrules.sh | 12 + 9 files changed, 649 insertions(+) create mode 100644 dracut/90zfs/90-zfs.rules create mode 100644 dracut/90zfs/Makefile.am create mode 100644 dracut/90zfs/Makefile.in create mode 100755 dracut/90zfs/check create mode 100755 dracut/90zfs/install create mode 100755 dracut/90zfs/installkernel create mode 100755 dracut/90zfs/mount-zfs.sh create mode 100755 dracut/90zfs/parse-zfs.sh create mode 100755 dracut/90zfs/zfs-genrules.sh (limited to 'dracut/90zfs') diff --git a/dracut/90zfs/90-zfs.rules b/dracut/90zfs/90-zfs.rules new file mode 100644 index 000000000..918d726d7 --- /dev/null +++ b/dracut/90zfs/90-zfs.rules @@ -0,0 +1,7 @@ +SUBSYSTEM!="block", GOTO="zfs_end" +ACTION!="add|change", GOTO="zfs_end" + +ENV{ID_FS_TYPE}=="zfs", RUN+="/sbin/modprobe zfs" +ENV{ID_FS_TYPE}=="zfs_member", RUN+="/sbin/modprobe zfs" + +LABEL="zfs_end" diff --git a/dracut/90zfs/Makefile.am b/dracut/90zfs/Makefile.am new file mode 100644 index 000000000..cea78c5d2 --- /dev/null +++ b/dracut/90zfs/Makefile.am @@ -0,0 +1,27 @@ +pkgdracutdir = $(datarootdir)/dracut/modules.d/90zfs +dist_pkgdracut_SCRIPTS = \ + $(top_srcdir)/dracut/90zfs/90-zfs.rules \ + $(top_srcdir)/dracut/90zfs/check \ + $(top_srcdir)/dracut/90zfs/install \ + $(top_srcdir)/dracut/90zfs/installkernel \ + $(top_srcdir)/dracut/90zfs/mount-zfs.sh \ + $(top_srcdir)/dracut/90zfs/zfs-genrules.sh \ + $(top_srcdir)/dracut/90zfs/parse-zfs.sh + +all: + @list='$(dist_pkgdracut_SCRIPTS)'; 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\ + for file in $$list; do \ + link=$$(basename $$file); \ + if [ ! -e $$link ]; then \ + $(LN_S) $$file $$link; \ + fi \ + done + +clean: + @list='$(dist_pkgdracut_SCRIPTS)'; \ + for file in $$list; do \ + link=$$(basename $$file); \ + if [ -L $$link ]; then \ + $(RM) $$link; \ + fi \ + done + +# Tell versions [3.59,3.63) of GNU make to not export all variables. +# Otherwise a system limit (for SysV at least) may be exceeded. +.NOEXPORT: diff --git a/dracut/90zfs/check b/dracut/90zfs/check new file mode 100755 index 000000000..ac4006b86 --- /dev/null +++ b/dracut/90zfs/check @@ -0,0 +1,10 @@ +#!/bin/bash + +# We depend on udev-rules being loaded +[ "$1" = "-d" ] && exit 0 + +# Verify the zfs tool chain +which zpool >/dev/null 2>&1 || exit 1 +which zfs >/dev/null 2>&1 || exit 1 + +exit 0 diff --git a/dracut/90zfs/install b/dracut/90zfs/install new file mode 100755 index 000000000..5be976860 --- /dev/null +++ b/dracut/90zfs/install @@ -0,0 +1,17 @@ +#!/bin/bash + +inst_rules "$moddir/90-zfs.rules" +inst_rules /etc/udev/rules.d/60-zpool.rules +inst_rules /etc/udev/rules.d/60-zvol.rules +inst /etc/zfs/zdev.conf +inst /etc/hostid +dracut_install zfs +dracut_install zpool +dracut_install zpool_layout +dracut_install zpool_id +dracut_install zvol_id +dracut_install mount.zfs +dracut_install hostid +inst_hook cmdline 95 "$moddir/parse-zfs.sh" +inst_hook mount 98 "$moddir/mount-zfs.sh" +inst_hook pre-udev 29 "$moddir/zfs-genrules.sh" diff --git a/dracut/90zfs/installkernel b/dracut/90zfs/installkernel new file mode 100755 index 000000000..c3fa7de17 --- /dev/null +++ b/dracut/90zfs/installkernel @@ -0,0 +1,10 @@ +#!/bin/bash + +instmods zfs +instmods zcommon +instmods znvpair +instmods zavl +instmods zunicode +instmods spl +instmods zlib_deflate +instmods zlib_inflate diff --git a/dracut/90zfs/mount-zfs.sh b/dracut/90zfs/mount-zfs.sh new file mode 100755 index 000000000..6b742e348 --- /dev/null +++ b/dracut/90zfs/mount-zfs.sh @@ -0,0 +1,10 @@ +#!/bin/sh + +. /lib/dracut-lib.sh + +if [ "$rootfs" = "zfs" ]; then + zfsrootfs=`echo "$root" | sed 's|^zfs:||'` + zfspool=`echo "$zfsrootfs" | sed 's|/.*||g'` + zpool import -N "$zfspool" + mount -o zfsutil -t "$rootfs" "$zfsrootfs" "$NEWROOT" && ROOTFS_MOUNTED=yes +fi diff --git a/dracut/90zfs/parse-zfs.sh b/dracut/90zfs/parse-zfs.sh new file mode 100755 index 000000000..ef3d058ac --- /dev/null +++ b/dracut/90zfs/parse-zfs.sh @@ -0,0 +1,23 @@ +case "$root" in + zfs:FILESYSTEM=*|FILESYSTEM=*) + root="${root#zfs:}" + root="zfs:${root#FILESYSTEM=}" + rootfs="zfs" + rootok=1 ;; + zfs:ZFS=*|ZFS=*) + root="${root#zfs:}" + root="zfs:${root#ZFS=}" + rootfs="zfs" + rootok=1 ;; +esac + +if [ "$rootok" != "1" ] ; then + zpool import -aN + zfsbootfs=`zpool list -H -o bootfs | grep -v ^-$ -m 1` + if [ -n "$zfsbootfs" ] ; then + root="zfs:$zfsbootfs" + rootfs="zfs" + rootok=1 + fi + zpool list -H | while read fs rest ; do zpool export "$fs" ; done +fi diff --git a/dracut/90zfs/zfs-genrules.sh b/dracut/90zfs/zfs-genrules.sh new file mode 100755 index 000000000..ffbd51ff1 --- /dev/null +++ b/dracut/90zfs/zfs-genrules.sh @@ -0,0 +1,12 @@ +if [ "${root%%:*}" = "zfs" ]; then + [ -d /dev/.udev/rules.d ] || mkdir -p /dev/.udev/rules.d + { + printf 'KERNEL=="%s", SYMLINK+="root"\n' null + printf 'SYMLINK=="%s", SYMLINK+="root"\n' null + } >> /dev/.udev/rules.d/99-zfs.rules + + printf '[ -e "%s" ] && { ln -s "%s" /dev/root 2>/dev/null; rm "$job"; }\n' \ + "/dev/null" "/dev/null" >> /initqueue-settled/zfssymlink.sh + + echo '[ -e /dev/root ]' > /initqueue-finished/zfs.sh +fi -- cgit v1.2.3