From: Christian Hofstaedtler <christian@hofstaedtler.name>
Date: Sat, 26 Apr 2014 18:33:56 +0000 (+0200)
Subject: Add option --vm to install VMs into LVs and such
X-Git-Tag: v0.65~1^2
X-Git-Url: https://git.grml.org/?p=grml-debootstrap.git;a=commitdiff_plain;h=960e54dbc6f4c1b446e1df444b1b71275ee30b5e;hp=1081c44c4f6368490481c4c5b48281f3846cbed1

Add option --vm to install VMs into LVs and such

--vmfile insists on creating an image using qemu-img, whereas --vm
requires an existing container (for example an LVM LV).
---

diff --git a/cmdlineopts.clp b/cmdlineopts.clp
index a89c985..f565598 100644
--- a/cmdlineopts.clp
+++ b/cmdlineopts.clp
@@ -12,7 +12,7 @@
 # should be handled in the main script, where it belongs.
 ################################################################################
 
-CMDLINE_OPTS=mirror:,iso:,release:,target:,mntpoint:,debopt:,defaultinterfaces,interactive,nodebootstrap,nointerfaces,nokernel,nopackages,filesystem:,config:,confdir:,packages:,chroot-scripts:,scripts:,pre-scripts:,debconf:,vmfile,vmsize:,keep_src_list,hostname:,password:,nopassword,grmlrepos,backportrepos,bootappend:,grub:,arch:,insecure,verbose,help,version,force,debug
+CMDLINE_OPTS=mirror:,iso:,release:,target:,mntpoint:,debopt:,defaultinterfaces,interactive,nodebootstrap,nointerfaces,nokernel,nopackages,filesystem:,config:,confdir:,packages:,chroot-scripts:,scripts:,pre-scripts:,debconf:,vm,vmfile,vmsize:,keep_src_list,hostname:,password:,nopassword,grmlrepos,backportrepos,bootappend:,grub:,arch:,insecure,verbose,help,version,force,debug
 
 _opt_temp=`getopt --name grml-debootstrap -o +m:i:r:t:p:c:d:vhV --long \
     $CMDLINE_OPTS -- "$@"`
@@ -38,10 +38,13 @@ while :; do
   --target|-t)         # Target partition (/dev/...) or directory
     shift; _opt_target="$1"
     ;;
-  --vmfile)           # Virtual machine file
+  --vm)                # Virtual machine image (no file)
+    _opt_vm="T"
+    ;;
+  --vmfile)            # Virtual machine file
     _opt_vmfile="T"
     ;;
-  --vmsize)           # size of Virtual machine file
+  --vmsize)            # size of Virtual machine file
     shift; _opt_vmsize="$1"
     ;;
   --mntpoint|-p)       # Mountpoint used for mounting the target system
diff --git a/grml-debootstrap b/grml-debootstrap
index e7384f0..3e77319 100755
--- a/grml-debootstrap
+++ b/grml-debootstrap
@@ -77,9 +77,11 @@ Bootstrap options:
 
 Options for Virtual Machine deployment:
 
-      --vmfile           Set up a Virtual Machine (raw format) instead of installing
+      --vm               Set up a Virtual Machine, instead of plainly installing
                          to a partition or directory, to be combined with --target,
-                         like: --vmfile --target /mnt/sda1/qemu.img
+                         like: --vm --target /dev/mapper/your-vm-disk
+      --vmfile           Like --vm, but install into a file (raw format).
+                         Example: --vmfile --target /mnt/sda1/qemu.img
       --vmsize <size>    Use specified size for size of VM file (default: 2G).
                          Syntax as supported by qemu-img, like: --vmsize 3G
 
@@ -315,7 +317,8 @@ fi
 [ "$_opt_iso" ]                 && ISO=$_opt_iso
 [ "$_opt_release" ]             && RELEASE=$_opt_release
 [ "$_opt_target" ]              && TARGET=$_opt_target
-[ "$_opt_vmfile" ]              && VIRTUAL=1
+[ "$_opt_vm" ]                  && VIRTUAL=1
+[ "$_opt_vmfile" ]              && VMFILE=1 && VIRTUAL=1
 [ "$_opt_vmsize" ]              && VMSIZE=$_opt_vmsize
 [ "$_opt_mntpoint" ]            && MNTPOINT=$_opt_mntpoint
 [ "$_opt_debopt" ]              && DEBOOTSTRAP_OPT=$_opt_debopt
@@ -740,7 +743,9 @@ else # if not running automatic installation display configuration and prompt fo
    [ -n "$ARCH" ]     && echo "   Using arch:      $ARCH"
    if [ -n "$VIRTUAL" ] ; then
       echo "   Deploying as Virtual Machine."
-      [ -n "$VMSIZE" ] && echo "   Using Virtual Disk file with size of ${VMSIZE}."
+      if [ -n "$VMSIZE" -a -n "$VMFILE" ]; then
+         echo "   Using Virtual Disk file with size of ${VMSIZE}."
+      fi
    fi
 
    if [ ! -t 0 -a -z "$ROOTPASSWORD" -a -z "$NOPASSWORD" ] ; then
@@ -974,18 +979,25 @@ mount_target() {
 # prepare VM image for usage with debootstrap {{{
 prepare_vm() {
   if [ -z "$VIRTUAL" ] ; then
-     return 0 # be quite by intention
+     return 0 # be quiet by intention
   fi
 
-  if [ -b "$TARGET" ] ; then
+  if [ -b "$TARGET" -a -n "$VMFILE" ] ; then
      eerror "Error: specified virtual disk target ($TARGET) is an existing block device."
      eend 1
      bailout 1
   fi
+  if [ ! -b "$TARGET" -a -z "$VMFILE" ] ; then
+     eerror "Error: specified virtual disk target ($TARGET) does not exist yet."
+     eend 1
+     bailout 1
+  fi
 
   ORIG_TARGET="$TARGET" # store for later reuse
 
-  qemu-img create -f raw "${TARGET}" "${VMSIZE}"
+  if [ -n "$VMFILE" ]; then
+    qemu-img create -f raw "${TARGET}" "${VMSIZE}"
+  fi
   echo 4 66 | /usr/share/grml-debootstrap/bootgrub.mksh -A | dd of="$TARGET" conv=notrunc
   dd if=/dev/zero bs=1 conv=notrunc count=64 seek=446 of="$TARGET"
   if [ "$FIXED_DISK_IDENTIFIERS" = "yes" ] ; then
diff --git a/grml-debootstrap.8.txt b/grml-debootstrap.8.txt
index 334843d..2dce6db 100644
--- a/grml-debootstrap.8.txt
+++ b/grml-debootstrap.8.txt
@@ -135,7 +135,7 @@ Options and environment variables
 *--nointerfaces*::
 
     Do not copy /etc/network/interfaces from host system to the target.
-    This option is automatically enabled when using --vmfile.
+    This option is automatically enabled when using --vm or --vmfile.
 
 *--nokernel*::
 
@@ -202,6 +202,14 @@ Options and environment variables
 
     Increase verbosity.
 
+*--vm*::
+
+    Set up a Virtual Machine on an existing block device, which will be
+    partitioned.
+    This allows deployment of a Virtual Machine. The options needs to be
+    combined with the --target option.
+    Usage example: --vm --target /dev/mapper/your-vm-disk
+
 *--vmfile*::
 
     Set up a Virtual Machine instead of installing to a partition or directory.