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9052e3d70b
Unlike other filesystems, snapshots and rollbacks of bootfs need to be done from a rescue environment. This patch makes it possible to snap- shot or rollback the bootfs simply by specifying bootfs.snapshot or bootfs.rollback on the kernel command line. The operation will be performed by dracut just before bootfs is mounted. Reviewed-by: Antonio Russo <antonio.e.russo@gmail.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Gregory Bartholomew <gregory.lee.bartholomew@gmail.com> Closes #10198
120 lines
4.3 KiB
Bash
Executable File
120 lines
4.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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check() {
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# We depend on udev-rules being loaded
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[ "${1}" = "-d" ] && return 0
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# Verify the zfs tool chain
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for tool in "@sbindir@/zpool" "@sbindir@/zfs" "@mounthelperdir@/mount.zfs" ; do
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test -x "$tool" || return 1
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done
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# Verify grep exists
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which grep >/dev/null 2>&1 || return 1
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return 0
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}
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depends() {
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echo udev-rules
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return 0
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}
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installkernel() {
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instmods zfs
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instmods zcommon
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instmods znvpair
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instmods zavl
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instmods zunicode
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instmods zlua
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instmods icp
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instmods spl
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instmods zlib_deflate
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instmods zlib_inflate
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}
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install() {
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inst_rules @udevruledir@/90-zfs.rules
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inst_rules @udevruledir@/69-vdev.rules
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inst_rules @udevruledir@/60-zvol.rules
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dracut_install hostid
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dracut_install grep
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dracut_install @sbindir@/zfs
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dracut_install @sbindir@/zpool
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# Workaround for zfsonlinux/zfs#4749 by ensuring libgcc_s.so(.1) is included
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if [[ -n "$(ldd @sbindir@/zpool | grep -F 'libgcc_s.so')" ]]; then
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# Dracut will have already tracked and included it
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:;
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elif command -v gcc-config 2>&1 1>/dev/null; then
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# On systems with gcc-config (Gentoo, Funtoo, etc.):
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# Use the current profile to resolve the appropriate path
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dracut_install "/usr/lib/gcc/$(s=$(gcc-config -c); echo ${s%-*}/${s##*-})/libgcc_s.so.1"
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elif [[ -n "$(ls /usr/lib/libgcc_s.so* 2>/dev/null)" ]]; then
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# Try a simple path first
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dracut_install /usr/lib/libgcc_s.so*
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else
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# Fallback: Guess the path and include all matches
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dracut_install /usr/lib/gcc/*/*/libgcc_s.so*
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fi
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dracut_install @mounthelperdir@/mount.zfs
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dracut_install @udevdir@/vdev_id
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dracut_install awk
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dracut_install basename
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dracut_install cut
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dracut_install head
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dracut_install @udevdir@/zvol_id
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inst_hook cmdline 95 "${moddir}/parse-zfs.sh"
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if [ -n "$systemdutildir" ] ; then
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inst_script "${moddir}/zfs-generator.sh" "$systemdutildir"/system-generators/dracut-zfs-generator
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fi
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inst_hook pre-mount 90 "${moddir}/zfs-load-key.sh"
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inst_hook mount 98 "${moddir}/mount-zfs.sh"
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inst_hook cleanup 99 "${moddir}/zfs-needshutdown.sh"
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inst_hook shutdown 20 "${moddir}/export-zfs.sh"
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inst_simple "${moddir}/zfs-lib.sh" "/lib/dracut-zfs-lib.sh"
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if [ -e @sysconfdir@/zfs/zpool.cache ]; then
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inst @sysconfdir@/zfs/zpool.cache
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type mark_hostonly >/dev/null 2>&1 && mark_hostonly @sysconfdir@/zfs/zpool.cache
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fi
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if [ -e @sysconfdir@/zfs/vdev_id.conf ]; then
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inst @sysconfdir@/zfs/vdev_id.conf
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type mark_hostonly >/dev/null 2>&1 && mark_hostonly @sysconfdir@/zfs/vdev_id.conf
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fi
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# Synchronize initramfs and system hostid
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AA=`hostid | cut -b 1,2`
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BB=`hostid | cut -b 3,4`
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CC=`hostid | cut -b 5,6`
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DD=`hostid | cut -b 7,8`
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echo -ne "\\x${DD}\\x${CC}\\x${BB}\\x${AA}" > "${initdir}/etc/hostid"
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if dracut_module_included "systemd"; then
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mkdir -p "${initdir}/$systemdsystemunitdir/zfs-import.target.wants"
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for _item in scan cache ; do
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dracut_install @systemdunitdir@/zfs-import-$_item.service
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if ! [ -L "${initdir}/$systemdsystemunitdir/zfs-import.target.wants"/zfs-import-$_item.service ]; then
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ln -s ../zfs-import-$_item.service "${initdir}/$systemdsystemunitdir/zfs-import.target.wants"/zfs-import-$_item.service
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type mark_hostonly >/dev/null 2>&1 && mark_hostonly @systemdunitdir@/zfs-import-$_item.service
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fi
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done
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inst "${moddir}"/zfs-env-bootfs.service "${systemdsystemunitdir}"/zfs-env-bootfs.service
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ln -s ../zfs-env-bootfs.service "${initdir}/${systemdsystemunitdir}/zfs-import.target.wants"/zfs-env-bootfs.service
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type mark_hostonly >/dev/null 2>&1 && mark_hostonly @systemdunitdir@/zfs-env-bootfs.service
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dracut_install systemd-ask-password
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dracut_install systemd-tty-ask-password-agent
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mkdir -p "${initdir}/$systemdsystemunitdir/initrd.target.wants"
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dracut_install @systemdunitdir@/zfs-import.target
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if ! [ -L "${initdir}/$systemdsystemunitdir/initrd.target.wants"/zfs-import.target ]; then
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ln -s ../zfs-import.target "${initdir}/$systemdsystemunitdir/initrd.target.wants"/zfs-import.target
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type mark_hostonly >/dev/null 2>&1 && mark_hostonly @systemdunitdir@/zfs-import.target
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fi
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for _service in zfs-snapshot-bootfs.service zfs-rollback-bootfs.service ; do
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inst "${moddir}"/$_service "${systemdsystemunitdir}"/$_service
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if ! [ -L "${initdir}/$systemdsystemunitdir/initrd.target.wants"/$_service ]; then
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ln -s ../$_service "${initdir}/$systemdsystemunitdir/initrd.target.wants"/$_service
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fi
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done
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fi
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}
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