src/brand/clone

   1 #!/bin/ksh -p
   2 #
   3 # CDDL HEADER START
   4 #
   5 # The contents of this file are subject to the terms of the
   6 # Common Development and Distribution License (the "License").
   7 # You may not use this file except in compliance with the License.
   8 #
   9 # You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10 # or http://www.opensolaris.org/os/licensing.
  11 # See the License for the specific language governing permissions
  12 # and limitations under the License.
  13 #
  14 # When distributing Covered Code, include this CDDL HEADER in each
  15 # file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16 # If applicable, add the following below this CDDL HEADER, with the
  17 # fields enclosed by brackets "[]" replaced with your own identifying
  18 # information: Portions Copyright [yyyy] [name of copyright owner]
  19 #
  20 # CDDL HEADER END
  21 #
  22 #
  23 # Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  24 # Use is subject to license terms.
  25 #
  26 # Copyright (C) 2013 by Jim Klimov - implemented the previously absent
  27 #    cloning of zones from specified snapshot, and avoidance of sys-unconfig
  28
  29 . /usr/lib/brand/ipkg/common.ksh
  30
  31 m_usage=$(gettext "clone {sourcezone}")
  32 f_nosource=$(gettext "Error: unable to determine source zone dataset.")
  33 f_badsource=$(gettext "Error: specified snapshot is invalid for this source zone.")
  34
  35 # Clean up on failure
  36 trap_exit()
  37 {
  38         if (( $ZONE_IS_MOUNTED != 0 )); then
  39                 error "$v_unmount"
  40                 zoneadm -z $ZONENAME unmount
  41         fi
  42
  43         exit $ZONE_SUBPROC_INCOMPLETE
  44 }
  45
  46 # Set up ZFS dataset hierarchy for the zone.
  47
  48 ROOT="rpool/ROOT"
  49
  50 # Other brand clone options are invalid for this brand.
  51 while getopts "R:s:Xz:" opt; do
  52         case $opt in
  53                 R)      ZONEPATH="$OPTARG" ;;
  54                 s)      case "$OPTARG" in
  55                         *@*) # Full snapshot name was provided, or just "@snap"
  56                              # Split this into dataset name (even if empty) and
  57                              # snapshot name (also may be empty)
  58                                 SNAPNAME="`echo "$OPTARG" | sed 's/^[^@]*@//'`"
  59                                 REQUESTED_DS="`echo "$OPTARG" | sed 's/\([^@]*\)@.*$/\1/'`"
  60                                 ;;
  61                         */*) # Only dataset name was passed, so we will make a
  62                              # snapshot there automatically and clone off it
  63                                 SNAPNAME=""
  64                                 REQUESTED_DS="$OPTARG"
  65                                 ;;
  66                         *)   # Only snapshot name was passed, so we will clone
  67                              # the source zone's active ZBE and this snapshot
  68                                 SNAPNAME="$OPTARG"
  69                                 REQUESTED_DS=""
  70                                 ;;
  71                         esac
  72                         ;;
  73                 X)      NO_SYSUNCONFIG=yes ;;
  74                 z)      ZONENAME="$OPTARG" ;;
  75                 *)      fail_usage "";;
  76         esac
  77 done
  78 shift $((OPTIND-1))
  79
  80 if [ $# -ne 1 ]; then
  81         fail_usage "";
  82 fi
  83 sourcezone="$1"
  84
  85 get_current_gzbe
  86
  87 if [ -z "$REQUESTED_DS" ]; then
  88         # Find the active source zone dataset to clone.
  89         sourcezonepath=`/usr/sbin/zoneadm -z $sourcezone list -p | awk -F: '{print $4}'`
  90         if [ -z "$sourcezonepath" ]; then
  91                 fail_fatal "$f_nosource"
  92         fi
  93
  94         get_zonepath_ds $sourcezonepath
  95         get_active_ds $CURRENT_GZBE $ZONEPATH_DS
  96 else
  97         # Sanity-check the provided dataset (should exist and be an IPS ZBE)
  98         REQUESTED_DS="`echo "$REQUESTED_DS" | egrep '^.*/'"$sourcezone"'/ROOT/[^/]+$'`"
  99         if [ $? != 0 -o x"$REQUESTED_DS" = x ]; then
 100                 fail_fatal "$f_badsource"
 101         fi
 102         zfs list -H -o \
 103                 org.opensolaris.libbe:parentbe,org.opensolaris.libbe:active \
 104                 "$REQUESTED_DS" > /dev/null || \
 105                         fail_fatal "$f_badsource"
 106         ACTIVE_DS="$REQUESTED_DS"
 107 fi
 108
 109 # Another sanity-check: requested snapshot exists for default or requested ZBE
 110 if [ x"$SNAPNAME" != x ]; then
 111         zfs list -H "$ACTIVE_DS@$SNAPNAME" > /dev/null || \
 112                 fail_fatal "$f_badsource"
 113 fi
 114
 115 #
 116 # Now set up the zone's datasets
 117 #
 118
 119 #
 120 # First make the top-level dataset.
 121 #
 122
 123 pdir=`/usr/bin/dirname $ZONEPATH`
 124 zpname=`/usr/bin/basename $ZONEPATH`
 125
 126 get_zonepath_ds $pdir
 127 zpds=$ZONEPATH_DS
 128
 129 fail_zonepath_in_rootds $zpds
 130
 131 #
 132 # We need to tolerate errors while creating the datasets and making the
 133 # mountpoint, since these could already exist from some other BE.
 134 #
 135
 136 /usr/sbin/zfs create $zpds/$zpname
 137
 138 /usr/sbin/zfs create -o mountpoint=legacy -o zoned=on $zpds/$zpname/ROOT
 139
 140 if [ x"$SNAPNAME" = x ]; then
 141         # make snapshot
 142         SNAPNAME=${ZONENAME}_snap
 143         SNAPNUM=0
 144         while [ $SNAPNUM -lt 100 ]; do
 145                 /usr/sbin/zfs snapshot $ACTIVE_DS@$SNAPNAME
 146                 if [ $? = 0 ]; then
 147                         break
 148                 fi
 149                 SNAPNUM=`expr $SNAPNUM + 1`
 150                 SNAPNAME="${ZONENAME}_snap$SNAPNUM"
 151         done
 152
 153         # NOTE: This artificially limits us to 100 clones of a "golden" zone
 154         # into a same-named (test?) zone, unless clones are based on some
 155         # same snapshot via command-line
 156         if [ $SNAPNUM -ge 100 ]; then
 157                 fail_fatal "$f_zfs_create"
 158         fi
 159 fi
 160
 161 # do clone
 162 BENAME=zbe
 163 BENUM=0
 164 while [ $BENUM -lt 100 ]; do
 165         /usr/sbin/zfs clone $ACTIVE_DS@$SNAPNAME $zpds/$zpname/ROOT/$BENAME
 166         if [ $? = 0 ]; then
 167                 break
 168         fi
 169         BENUM=`expr $BENUM + 1`
 170         BENAME="zbe-$BENUM"
 171 done
 172
 173 if [ $BENUM -ge 100 ]; then
 174         fail_fatal "$f_zfs_create"
 175 fi
 176
 177 /usr/sbin/zfs set $PROP_ACTIVE=on $zpds/$zpname/ROOT/$BENAME || \
 178         fail_incomplete "$f_zfs_create"
 179
 180 /usr/sbin/zfs set $PROP_PARENT=$CURRENT_GZBE $zpds/$zpname/ROOT/$BENAME || \
 181         fail_incomplete "$f_zfs_create"
 182
 183 /usr/sbin/zfs set canmount=noauto $zpds/$zpname/ROOT/$BENAME || \
 184         fail_incomplete "$f_zfs_create"
 185
 186 if [ ! -d $ZONEPATH/root ]; then
 187         /usr/bin/mkdir -p $ZONEPATH/root
 188         /usr/bin/chmod 700 $ZONEPATH
 189 fi
 190
 191 ZONE_IS_MOUNTED=0
 192 trap trap_exit EXIT
 193
 194 if [ x"$NO_SYSUNCONFIG" = xyes ]; then
 195         vlog "$v_mounting"
 196         ZONE_IS_MOUNTED=1
 197         zoneadm -z $ZONENAME mount -f || fatal "$e_badmount"
 198 else
 199         unconfigure_zone
 200 fi
 201
 202 trap - EXIT
 203 exit $ZONE_SUBPROC_OK