libexec/rc/rc.d/zvol

   1 #!/bin/sh
   2 #
   3 # $FreeBSD$
   4 #
   5
   6 # PROVIDE: zvol
   7 # REQUIRE: zpool
   8 # KEYWORD: nojail
   9
  10 . /etc/rc.subr
  11
  12 name="zvol"
  13 desc="Activate swap on ZVOLs"
  14 rcvar="zfs_enable"
  15 start_cmd="zvol_start"
  16 stop_cmd="zvol_stop"
  17 required_modules="zfs"
  18
  19 zvol_start()
  20 {
  21         # Enable swap on ZVOLs with property org.freebsd:swap=on.
  22         zfs list -H -o org.freebsd:swap,name -t volume |
  23         while read state name; do
  24                 case "${state}" in
  25                 ([oO][nN])
  26                         swapon /dev/zvol/${name}
  27                         ;;
  28                 esac
  29         done
  30 }
  31
  32 zvol_stop()
  33 {
  34         # Disable swap on ZVOLs with property org.freebsd:swap=on.
  35         zfs list -H -o org.freebsd:swap,name -t volume |
  36         while read state name; do
  37                 case "${state}" in
  38                 ([oO][nN])
  39                         swapoff /dev/zvol/${name}
  40                         ;;
  41                 esac
  42         done
  43 }
  44
  45 load_rc_config $name
  46 run_rc_command "$1"