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7da8f8d81b
'zfs load-key -a' will only be called if needed. If a dataset not needed for boot does not have its key loaded (home directories for example) boot can still continue. zfs:AUTO was not working via dracut, so we still need the generator script to do its thing. Reviewed-by: Richard Yao <ryao@gentoo.org> Reviewed-by: Manuel Amador (Rudd-O) <rudd-o@rudd-o.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: loli10K <ezomori.nozomu@gmail.com> Signed-off-by: Matthew Thode <mthode@mthode.org> Closes #6982 Closes #7004
97 lines
2.7 KiB
Bash
Executable File
97 lines
2.7 KiB
Bash
Executable File
#!/bin/sh
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. /lib/dracut-zfs-lib.sh
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ZFS_DATASET=""
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ZFS_POOL=""
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case "${root}" in
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zfs:*) ;;
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*) return ;;
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esac
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GENERATOR_FILE=/run/systemd/generator/sysroot.mount
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GENERATOR_EXTENSION=/run/systemd/generator/sysroot.mount.d/zfs-enhancement.conf
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if [ -e "$GENERATOR_FILE" -a -e "$GENERATOR_EXTENSION" ] ; then
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# If the ZFS sysroot.mount flag exists, the initial RAM disk configured
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# it to mount ZFS on root. In that case, we bail early. This flag
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# file gets created by the zfs-generator program upon successful run.
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info "ZFS: There is a sysroot.mount and zfs-generator has extended it."
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info "ZFS: Delegating root mount to sysroot.mount."
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# Let us tell the initrd to run on shutdown.
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# We have a shutdown hook to run
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# because we imported the pool.
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# We now prevent Dracut from running this thing again.
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for zfsmounthook in "$hookdir"/mount/*zfs* ; do
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if [ -f "$zfsmounthook" ] ; then
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rm -f "$zfsmounthook"
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fi
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done
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return
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fi
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info "ZFS: No sysroot.mount exists or zfs-generator did not extend it."
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info "ZFS: Mounting root with the traditional mount-zfs.sh instead."
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# Delay until all required block devices are present.
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udevadm settle
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if [ "${root}" = "zfs:AUTO" ] ; then
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ZFS_DATASET="$(find_bootfs)"
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if [ $? -ne 0 ] ; then
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zpool import -N -a ${ZPOOL_IMPORT_OPTS}
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ZFS_DATASET="$(find_bootfs)"
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if [ $? -ne 0 ] ; then
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warn "ZFS: No bootfs attribute found in importable pools."
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export_all -F
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rootok=0
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return 1
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fi
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fi
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info "ZFS: Using ${ZFS_DATASET} as root."
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fi
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ZFS_DATASET="${ZFS_DATASET:-${root#zfs:}}"
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ZFS_POOL="${ZFS_DATASET%%/*}"
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if import_pool "${ZFS_POOL}" ; then
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# Load keys if we can or if we need to
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if [ $(zpool list -H -o feature@encryption $(echo "${ZFS_POOL}" | awk -F\/ '{print $1}')) == 'active' ]; then
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# if the root dataset has encryption enabled
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if $(zfs list -H -o encryption "${ZFS_DATASET}" | grep -q -v off); then
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# figure out where the root dataset has its key, the keylocation should not be none
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while true; do
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if [[ $(zfs list -H -o keylocation "${ZFS_DATASET}") == 'none' ]]; then
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ZFS_DATASET=$(echo -n "${ZFS_DATASET}" | awk 'BEGIN{FS=OFS="/"}{NF--; print}')
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if [[ "${ZFS_DATASET}" == '' ]]; then
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rootok=0
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break
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fi
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else
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rootok=1
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break
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fi
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done
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[[ "${rootok}" -eq 0 ]]&& return 1
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# decrypt them
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TRY_COUNT=5
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while [ $TRY_COUNT != 0 ]; do
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zfs load-key "${ZFS_DATASET}"
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[ $? == 0 ] && break
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((TRY_COUNT-=1))
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done
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fi
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fi
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# Let us tell the initrd to run on shutdown.
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# We have a shutdown hook to run
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# because we imported the pool.
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info "ZFS: Mounting dataset ${ZFS_DATASET}..."
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if mount_dataset "${ZFS_DATASET}" ; then
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ROOTFS_MOUNTED=yes
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return 0
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fi
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fi
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rootok=0
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