File: zfs-rollback-bootfs.service.in

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zfs-linux 2.0.3-9%2Bdeb11u1
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[Unit]
Description=Rollback bootfs just before it is mounted
Requisite=zfs-import.target
After=zfs-import.target zfs-snapshot-bootfs.service
Before=dracut-mount.service
DefaultDependencies=no
ConditionKernelCommandLine=bootfs.rollback

[Service]
# ${BOOTFS} should have been set by zfs-env-bootfs.service
Type=oneshot
ExecStartPre=/bin/sh -c 'test -n "${BOOTFS}"'
ExecStart=/bin/sh -c '. /lib/dracut-lib.sh; SNAPNAME="$(getarg bootfs.rollback)"; /sbin/zfs rollback -Rf "${BOOTFS}@${SNAPNAME:-%v}"'
RemainAfterExit=yes