2 # Migrates the machine passed as arguments from the dev cluster.
3 # To be run on the prod cluster.
5 ## The present version is NOT A REAL SCRIPT.
6 ## Things may not even be tested. Copy and paste.
7 not_ready_yet_do_not_run_me
9 from invirt import remctl as r
10 from lib import database
14 dev_db_uri = 'postgres://sipb-xen@sipb-xen-dev.mit.edu/sipb_xen'
15 database.connect(dev_db_uri)
16 dev_sess = database.session
19 prod_sess = database.session
22 def take_data(machine_name):
24 machine = dev_sess.query(database.Machine).filter_by(name=machine_name).one()
26 # Clean out the ACL just so we don't have to think about it
28 dev_sess.update(machine)
31 print ' name: %s' % machine.name
32 print ' description: %s' % machine.description
33 print ' cpus: %s' % machine.cpus
34 print ' memory: %s' % machine.memory
35 print ' owner: %s' % machine.owner
36 print ' contact: %s' % machine.contact
37 print ' administrator: %s' % machine.administrator
38 print ' uuid: %s' % machine.uuid
39 print ' type: %s' % machine.type.type_id
40 print ' autorestart: %s' % machine.autorestart
41 print ' adminable: %s' % machine.adminable
43 for disk in machine.disks:
44 print ' - %s (%s)' % (disk.guest_device_name, disk.size)
46 for nic in machine.nics:
47 print ' - %s, %s, %s' % (nic.mac_addr, nic.ip, nic.hostname)
48 print '==============================================='
53 for r in disks + nics + [machine]:
58 for r in disks + nics + [machine]:
65 def restore_data(machine):
66 # The machine's type is still the one attached to the dev database;
68 machine.type = prod_sess.query(database.Type).filter_by(type_id=machine.type.type_id).one()
70 prod_sess.save(machine)
73 def migrate_vm(machine_name):
74 # Power off the VM on dev
76 # This has to be done first, because once the machine is deleted
77 # from the database, we can't remctl for it anymore
78 out, err = r.remctl('xvm-remote.mit.edu', 'control', machine_name, 'destroy', err=True)
81 machine = take_data(machine_name)
83 ## copy disk image... copy, copy...
84 for disk in machine.disks:
85 lvname='d_%s_%s' % (machine.name, disk.guest_device_name)
87 subprocess.check_call(['lvcreate', '-L%sM' % str(disk.size), '-n', lvname, 'xenvg'])
89 ssh = subprocess.Popen(['ssh', '-o', 'GSSAPIDelegateCredentials=no',
90 'torchwood-institute.mit.edu',
91 'dd', 'if=/dev/xenvg/%s' % lvname, 'bs=1M'],
92 stdout=subprocess.PIPE)
93 dd = subprocess.Popen(['dd', 'of=/dev/xenvg/%s' % lvname, 'bs=1M'],
99 if __name__ == '__main__':
100 for vm in sys.argv[1:]:
101 print '==============================================='
102 print 'Migrating %s' % vm
103 print '==============================================='
104 migrate_vm(vm.strip())