Prototype fast installer using a special guest.

[invirt/packages/invirt-autoinstaller.git] / files / usr / sbin / sipb-xen-duplicate

diff --git a/files/usr/sbin/sipb-xen-duplicate b/files/usr/sbin/sipb-xen-duplicate
index fa24e23..a78d3a1 100755 (executable)
--- a/files/usr/sbin/sipb-xen-duplicate
+++ b/files/usr/sbin/sipb-xen-duplicate
@@ -1,10 +1,10 @@
-#!/usr/bin/env python
+#!/usr/bin/env python2.5
 
 import sys
 import os
 import shutil
 import tempfile
-from subprocess import call, Popen
+from subprocess import call, check_call, Popen
 
 # TODO:
 # . pick a loop device sanely
@@ -71,5 +71,30 @@ def duplicate_lv(source, dest):
   print 'losetup -d '+sourcefs
   print 'losetup -d '+destfs
 
+def duplicate_by_vm(source, target, *args):
+  # source, target should be machine names
+  prefix = 'd_'
+  # 1. copy (by dd) source to target
+  source_device = '/dev/xenvg/' + prefix + source + '_hda'
+  target_device = '/dev/xenvg/' + prefix + target + '_hda'
+  #check_call(['/bin/dd', 'bs=1M', 'conv=nocreat',
+  #            'if='+source_device, 'of='+target_device])
+  # 2. prepare arguments volume
+  args_volume = prefix+target+'_args'
+  args_device = '/dev/xenvg/' + args_volume
+  check_call(['/sbin/lvcreate', 'xenvg', '--name', args_volume, '--size', '4K'])
+  file(args_device, 'w').write('\n'.join(args) + '\n')
+
+  copier_device = '/dev/xenvg/d_wert_hda'
+  check_call(['/usr/sbin/xm', 'create', 'sipb-database',
+              'machine_name='+target,
+              'disks=' + ' '.join(['phy:'+copier_device+',hda,w',
+                                   'phy:'+target_device+',hdc,w',
+                                   'phy:'+args_device+',hdd,w'])])
+  boot = 'c'
+
+  # XXX make this happen! check_call(['/sbin/lvremove', '-f', 'xenvg/'+args_volume])
+  
+
 if __name__ == '__main__':
-  duplicate_lv(*sys.argv[1:])
+  duplicate_by_vm(*sys.argv[1:])