2 files changed, 57 insertions, 0 deletions
diff --git a/man/man8/Makefile.am b/man/man8/Makefile.am
index 5c60bdfa7..b6408ddf2 100644
--- a/man/man8/Makefile.am
+++ b/man/man8/Makefile.am
@@ -4,6 +4,7 @@ dist_man_MANS = \
 	vdev_id.8 \
 	zdb.8 \
 	zfs.8 \
+	zfs-mount-generator.8 \
 	zfs-program.8 \
 	zgenhostid.8 \
 	zinject.8 \
diff --git a/man/man8/zfs-mount-generator.8 b/man/man8/zfs-mount-generator.8
new file mode 100644
index 000000000..af471e7c9
--- /dev/null
+++ b/man/man8/zfs-mount-generator.8
@@ -0,0 +1,56 @@
+.TH "ZFS\-MOUNT\-GENERATOR" "8" "ZFS" "zfs-mount-generator" "\""
+.SH "NAME"
+zfs\-mount\-generator \- generates systemd mount units for zfs
+.SH SYNOPSIS
+.B /lib/systemd/system-generators/zfs\-mount\-generator
+.sp
+.SH DESCRIPTION
+The zfs\-mount\-generator implements the \fBGenerators Specification\fP
+of
+.BR systemd (1),
+and is called during early boot to generate
+.BR systemd.mount (5)
+units for automatically mounted datasets. Mount ordering and dependencies
+are created for all tracked pools (see below). If a dataset has
+.BR canmount=on
+and
+.BR mountpoint
+set, the
+.BR auto
+mount option will be set, and a dependency for
+.BR local-fs.target
+on the mount will be created.
+
+Because zfs pools may not be available very early in the boot process,
+information on ZFS mountpoints must be stored separately. The output
+of the command
+.PP
+.RS 4
+zfs list -H -oname,mountpoint,canmount
+.RE
+.PP
+for datasets that should be mounted by systemd, should be kept
+separate from the pool, at
+.PP
+.RS 4
+.RI @sysconfdir@/zfs/zfs-list.cache/ POOLNAME
+.
+.RE
+.PP
+The cache file, if writeable, will be kept synchronized with the pool
+state by the ZEDLET
+.PP
+.RS 4
+history_event-zfs-list-cacher.sh .
+.RE
+.PP
+.sp
+.SH SEE ALSO
+.BR zfs (5)
+.BR zfs-events (5)
+.BR zed (8)
+.BR zpool (5)
+.BR systemd (1)
+.BR systemd.target (5)
+.BR systemd.special (7)
+.BR systemd.mount (7)