mirror_zfs/contrib/dracut/90zfs/zfs-snapshot-bootfs.service.in

[Unit]
Description=Snapshot bootfs just before it is mounted
Requisite=zfs-import.target
After=zfs-import.target
Before=dracut-mount.service
DefaultDependencies=no
ConditionKernelCommandLine=bootfs.snapshot

[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="$(getarg bootfs.snapshot)"; /sbin/zfs snapshot "${BOOTFS}@${SNAPNAME:-%v}"'
RemainAfterExit=yes
Add bootfs.snapshot and bootfs.rollback kernel parameters 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 2020-05-30 07:16:08 +03:00			`[Unit]`
			`Description=Snapshot bootfs just before it is mounted`
			`Requisite=zfs-import.target`
			`After=zfs-import.target`
			`Before=dracut-mount.service`
			`DefaultDependencies=no`
			`ConditionKernelCommandLine=bootfs.snapshot`

			`[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="$(getarg bootfs.snapshot)"; /sbin/zfs snapshot "${BOOTFS}@${SNAPNAME:-%v}"'`
			`RemainAfterExit=yes`