def backup_restore_prepare(backup_dir, options = {}, host_collection = None):
# Defaults
backup_restore_set_defaults(options)
#### Private functions begin
def is_vm_included_in_backup (backup_dir, vm):
if vm.qid == 0:
# Dom0 is not included, obviously
return False
backup_vm_dir_path = vm.dir_path.replace (qubes_base_dir, backup_dir)
if os.path.exists (backup_vm_dir_path):
return True
else:
return False
def find_template_name(template, replaces):
rx_replace = re.compile("(.*):(.*)")
for r in replaces:
m = rx_replace.match(r)
if m.group(1) == template:
return m.group(2)
return template
#### Private functions end
if not os.path.exists (backup_dir):
raise QubesException("The backup directory doesn't exist!")
backup_collection = QubesVmCollection(store_filename = backup_dir + "/qubes.xml")
backup_collection.lock_db_for_reading()
backup_collection.load()
if host_collection is None:
host_collection = QubesVmCollection()
host_collection.lock_db_for_reading()
host_collection.load()
host_collection.unlock_db()
backup_vms_list = [vm for vm in backup_collection.values()]
host_vms_list = [vm for vm in host_collection.values()]
vms_to_restore = {}
there_are_conflicting_vms = False
there_are_missing_templates = False
there_are_missing_netvms = False
dom0_username_mismatch = False
restore_home = False
# ... and the actual data
for vm in backup_vms_list:
if is_vm_included_in_backup (backup_dir, vm):
vms_to_restore[vm.name] = {}
vms_to_restore[vm.name]['vm'] = vm;
if 'exclude' in options.keys():
vms_to_restore[vm.name]['excluded'] = vm.name in options['exclude']
vms_to_restore[vm.name]['good-to-go'] = False
if host_collection.get_vm_by_name (vm.name) is not None:
vms_to_restore[vm.name]['already-exists'] = True
vms_to_restore[vm.name]['good-to-go'] = False
if vm.template is None:
vms_to_restore[vm.name]['template'] = None
else:
templatevm_name = find_template_name(vm.template.name, options['replace-template'])
vms_to_restore[vm.name]['template'] = templatevm_name
template_vm_on_host = host_collection.get_vm_by_name (templatevm_name)
# No template on the host?
if not ((template_vm_on_host is not None) and template_vm_on_host.is_template()):
# Maybe the (custom) template is in the backup?
template_vm_on_backup = backup_collection.get_vm_by_name (templatevm_name)
if template_vm_on_backup is None or not \
(is_vm_included_in_backup(backup_dir, template_vm_on_backup) and \
template_vm_on_backup.is_template()):
if options['use-default-template']:
vms_to_restore[vm.name]['orig-template'] = templatevm_name
vms_to_restore[vm.name]['template'] = host_collection.get_default_template().name
else:
vms_to_restore[vm.name]['missing-template'] = True
vms_to_restore[vm.name]['good-to-go'] = False
if vm.netvm is None:
vms_to_restore[vm.name]['netvm'] = None
else:
netvm_name = vm.netvm.name
vms_to_restore[vm.name]['netvm'] = netvm_name
# Set to None to not confuse QubesVm object from backup
# collection with host collection (further in clone_attrs). Set
# directly _netvm to suppress setter action, especially
# modifying firewall
vm._netvm = None
netvm_on_host = host_collection.get_vm_by_name (netvm_name)
# No netvm on the host?
if not ((netvm_on_host is not None) and netvm_on_host.is_netvm()):
# Maybe the (custom) netvm is in the backup?
netvm_on_backup = backup_collection.get_vm_by_name (netvm_name)
if not ((netvm_on_backup is not None) and netvm_on_backup.is_netvm() and is_vm_included_in_backup(backup_dir, netvm_on_backup)):
if options['use-default-netvm']:
vms_to_restore[vm.name]['netvm'] = host_collection.get_default_netvm().name
vm.uses_default_netvm = True
elif options['use-none-netvm']:
vms_to_restore[vm.name]['netvm'] = None
else:
vms_to_restore[vm.name]['missing-netvm'] = True
vms_to_restore[vm.name]['good-to-go'] = False
if 'good-to-go' not in vms_to_restore[vm.name].keys():
vms_to_restore[vm.name]['good-to-go'] = True
# ...and dom0 home
if options['dom0-home'] and os.path.exists(backup_dir + '/dom0-home'):
vms_to_restore['dom0'] = {}
local_user = grp.getgrnam('qubes').gr_mem[0]
dom0_homes = os.listdir(backup_dir + '/dom0-home')
if len(dom0_homes) > 1:
raise QubesException("More than one dom0 homedir in backup")
vms_to_restore['dom0']['username'] = dom0_homes[0]
if dom0_homes[0] != local_user:
vms_to_restore['dom0']['username-mismatch'] = True
if not options['ignore-dom0-username-mismatch']:
vms_to_restore['dom0']['good-to-go'] = False
if 'good-to-go' not in vms_to_restore['dom0']:
vms_to_restore['dom0']['good-to-go'] = True
return vms_to_restore
def backup_restore_do(backup_dir, restore_info, host_collection = None, print_callback = print_stdout, error_callback = print_stderr):
#### Private functions begin
def restore_vm_file (backup_dir, file_path):
backup_file_path = file_path.replace (qubes_base_dir, backup_dir)
#print "cp -rp {0} {1}".format (backup_file_path, file_path)
# We prefer to use Linux's cp, because it nicely handles sparse files
retcode = subprocess.call (["cp", "-p", backup_file_path, file_path])
if retcode != 0:
raise QubesException("*** Error while copying file {0} to {1}".format(backup_file_path, file_path))
def restore_vm_dir (backup_dir, src_dir, dst_dir):
backup_src_dir = src_dir.replace (qubes_base_dir, backup_dir)
# We prefer to use Linux's cp, because it nicely handles sparse files
retcode = subprocess.call (["cp", "-rp", backup_src_dir, dst_dir])
if retcode != 0:
raise QubesException("*** Error while copying file {0} to {1}".format(backup_src_dir, dest_dir))
#### Private functions end
lock_obtained = False
if host_collection is None:
host_collection = QubesVmCollection()
host_collection.lock_db_for_writing()
host_collection.load()
lock_obtained = True
# Add templates...
for vm_info in restore_info.values():
if not vm_info['good-to-go']:
continue
if 'vm' not in vm_info:
continue
vm = vm_info['vm']
if not vm.is_template():
continue
print_callback("-> Restoring Template VM {0}...".format(vm.name))
retcode = subprocess.call (["mkdir", "-p", vm.dir_path])
if retcode != 0:
error_callback("*** Cannot create directory: {0}?!".format(dest_dir))
error_callback("Skiping...")
continue
new_vm = None
try:
restore_vm_dir (backup_dir, vm.dir_path, qubes_templates_dir);
new_vm = host_collection.add_new_templatevm(vm.name,
conf_file=vm.conf_file,
dir_path=vm.dir_path,
installed_by_rpm=False)
new_vm.verify_files()
except Exception as err:
error_callback("ERROR: {0}".format(err))
error_callback("*** Skiping VM: {0}".vm.name)
if new_vm:
host_collection.pop(new_vm.qid)
continue
try:
new_vm.clone_attrs(vm)
except Exception as err:
error_callback("ERROR: {0}".format(err))
error_callback("*** Some VM property will not be restored")
try:
new_vm.create_appmenus(verbose=True)
except Exception as err:
error_callback("ERROR during appmenu restore: {0}".format(err))
error_callback("*** VM '{0}' will not have appmenus".format(vm.name))
# ... then NetVMs...
for vm_info in restore_info.values():
if not vm_info['good-to-go']:
continue
if 'vm' not in vm_info:
continue
vm = vm_info['vm']
if not vm.is_netvm():
continue
print_callback("-> Restoring {0} {1}...".format(vm.type, vm.name))
retcode = subprocess.call (["mkdir", "-p", vm.dir_path])
if retcode != 0:
error_callback("*** Cannot create directory: {0}?!".format(dest_dir))
error_callback("Skiping...")
continue
template = None
if vm.template is not None:
template_name = vm_info['template']
template = host_collection.get_vm_by_name(template_name)
new_vm = None
try:
restore_vm_dir (backup_dir, vm.dir_path, qubes_servicevms_dir);
if vm.type == "NetVM":
new_vm = host_collection.add_new_netvm(vm.name, template,
conf_file=vm.conf_file,
dir_path=vm.dir_path,
label=vm.label)
elif vm.type == "ProxyVM":
new_vm = host_collection.add_new_proxyvm(vm.name, template,
conf_file=vm.conf_file,
dir_path=vm.dir_path,
label=vm.label)
except Exception as err:
error_callback("ERROR: {0}".format(err))
error_callback("*** Skiping VM: {0}".format(vm.name))
if new_vm:
host_collection.pop(new_vm.qid)
continue
try:
new_vm.clone_attrs(vm)
except Exception as err:
error_callback("ERROR: {0}".format(err))
error_callback("*** Some VM property will not be restored")
try:
new_vm.verify_files()
except Exception as err:
error_callback("ERROR: {0}".format(err))
error_callback("*** Skiping VM: {0}".format(vm.name))
host_collection.pop(new_vm.qid)
continue
# ... then appvms...
for vm_info in restore_info.values():
if not vm_info['good-to-go']:
continue
if 'vm' not in vm_info:
continue
vm = vm_info['vm']
if not vm.is_appvm():
continue
print_callback("-> Restoring AppVM {0}...".format(vm.name))
retcode = subprocess.call (["mkdir", "-p", vm.dir_path])
if retcode != 0:
error_callback("*** Cannot create directory: {0}?!".format(dest_dir))
error_callback("Skiping...")
continue
template = None
if vm.template is not None:
template_name = vm_info['template']
template = host_collection.get_vm_by_name(template_name)
new_vm = None
try:
restore_vm_dir (backup_dir, vm.dir_path, qubes_appvms_dir);
new_vm = host_collection.add_new_appvm(vm.name, template,
conf_file=vm.conf_file,
dir_path=vm.dir_path,
label=vm.label)
except Exception as err:
error_callback("ERROR: {0}".format(err))
error_callback("*** Skiping VM: {0}".format(vm.name))
if new_vm:
host_collection.pop(new_vm.qid)
continue
try:
new_vm.clone_attrs(vm)
except Exception as err:
error_callback("ERROR: {0}".format(err))
error_callback("*** Some VM property will not be restored")
try:
new_vm.create_appmenus(verbose=True)
except Exception as err:
error_callback("ERROR during appmenu restore: {0}".format(err))
error_callback("*** VM '{0}' will not have appmenus".format(vm.name))
try:
new_vm.verify_files()
except Exception as err:
error_callback("ERROR: {0}".format(err))
error_callback("*** Skiping VM: {0}".format(vm.name))
host_collection.pop(new_vm.qid)
continue
# Set network dependencies - only non-default netvm setting
for vm_info in restore_info.values():
if not vm_info['good-to-go']:
continue
if 'vm' not in vm_info:
continue
vm = vm_info['vm']
host_vm = host_collection.get_vm_by_name(vm.name)
if host_vm is None:
# Failed/skipped VM
continue
if not vm.uses_default_netvm:
host_vm.netvm = host_collection.get_vm_by_name (vm_info['netvm']) if vm_info['netvm'] is not None else None
host_collection.save()
if lock_obtained:
host_collection.unlock_db()
# ... and dom0 home as last step
if 'dom0' in restore_info.keys() and restore_info['dom0']['good-to-go']:
backup_info = restore_info['dom0']
local_user = grp.getgrnam('qubes').gr_mem[0]
home_dir = pwd.getpwnam(local_user).pw_dir
backup_dom0_home_dir = backup_dir + '/dom0-home/' + backup_info['username']
restore_home_backupdir = "home-pre-restore-{0}".format (time.strftime("%Y-%m-%d-%H%M%S"))
print_callback("-> Restoring home of user '{0}'...".format(local_user))
print_callback("--> Existing files/dirs backed up in '{0}' dir".format(restore_home_backupdir))
os.mkdir(home_dir + '/' + restore_home_backupdir)
for f in os.listdir(backup_dom0_home_dir):
home_file = home_dir + '/' + f
if os.path.exists(home_file):
os.rename(home_file, home_dir + '/' + restore_home_backupdir + '/' + f)
retcode = subprocess.call (["cp", "-nrp", backup_dom0_home_dir + '/' + f, home_file])
if retcode != 0:
error_callback("*** Error while copying file {0} to {1}".format(backup_dom0_home_dir + '/' + f, home_file))
def backup_prepare(base_backup_dir, vms_list = None, exclude_list = [], print_callback = print_stdout):
"""If vms = None, include all (sensible) VMs; exclude_list is always applied"""
if not os.path.exists (base_backup_dir):
raise QubesException("The target directory doesn't exist!")
files_to_backup = file_to_backup (qubes_store_filename)
if exclude_list is None:
exclude_list = []
if vms_list is None:
qvm_collection = QubesVmCollection()
qvm_collection.lock_db_for_reading()
qvm_collection.load()
# FIXME: should be after backup completed
qvm_collection.unlock_db()
all_vms = [vm for vm in qvm_collection.values()]
appvms_to_backup = [vm for vm in all_vms if vm.is_appvm() and not vm.internal]
netvms_to_backup = [vm for vm in all_vms if vm.is_netvm() and not vm.qid == 0]
template_vms_worth_backingup = [vm for vm in all_vms if (vm.is_template() and not vm.installed_by_rpm)]
vms_list = appvms_to_backup + netvms_to_backup + template_vms_worth_backingup
vms_for_backup = vms_list
# Apply exclude list
if exclude_list:
vms_for_backup = [vm for vm in vms_list if vm.name not in exclude_list]
no_vms = len (vms_for_backup)
there_are_running_vms = False
fields_to_display = [
{ "name": "VM", "width": 16},
{ "name": "type","width": 12 },
{ "name": "size", "width": 12}
]
# Display the header
s = ""
for f in fields_to_display:
fmt="{{0:-^{0}}}-+".format(f["width"] + 1)
s += fmt.format('-')
print_callback(s)
s = ""
for f in fields_to_display:
fmt="{{0:>{0}}} |".format(f["width"] + 1)
s += fmt.format(f["name"])
print_callback(s)
s = ""
for f in fields_to_display:
fmt="{{0:-^{0}}}-+".format(f["width"] + 1)
s += fmt.format('-')
print_callback(s)
for vm in vms_for_backup:
if vm.is_template():
# handle templates later
continue
if vm.private_img is not None:
vm_sz = vm.get_disk_usage (vm.private_img)
files_to_backup += file_to_backup(vm.private_img, vm_sz )
if vm.is_appvm():
files_to_backup += file_to_backup(vm.icon_path)
if vm.updateable:
if os.path.exists(vm.dir_path + "/apps.templates"):
# template
files_to_backup += file_to_backup(vm.dir_path + "/apps.templates")
else:
# standaloneVM
files_to_backup += file_to_backup(vm.dir_path + "/apps")
if os.path.exists(vm.dir_path + "/kernels"):
files_to_backup += file_to_backup(vm.dir_path + "/kernels")
if os.path.exists (vm.firewall_conf):
files_to_backup += file_to_backup(vm.firewall_conf)
if os.path.exists(vm.dir_path + '/whitelisted-appmenus.list'):
files_to_backup += file_to_backup(vm.dir_path + '/whitelisted-appmenus.list')
if vm.updateable:
sz = vm.get_disk_usage(vm.root_img)
files_to_backup += file_to_backup(vm.root_img, sz)
vm_sz += sz
s = ""
fmt="{{0:>{0}}} |".format(fields_to_display[0]["width"] + 1)
s += fmt.format(vm.name)
fmt="{{0:>{0}}} |".format(fields_to_display[1]["width"] + 1)
if vm.is_netvm():
s += fmt.format("NetVM" + (" + Sys" if vm.updateable else ""))
else:
s += fmt.format("AppVM" + (" + Sys" if vm.updateable else ""))
fmt="{{0:>{0}}} |".format(fields_to_display[2]["width"] + 1)
s += fmt.format(size_to_human(vm_sz))
if vm.is_running():
s += " <-- The VM is running, please shut it down before proceeding with the backup!"
there_are_running_vms = True
print_callback(s)
for vm in vms_for_backup:
if not vm.is_template():
# already handled
continue
vm_sz = vm.get_disk_utilization()
files_to_backup += file_to_backup (vm.dir_path, vm_sz)
s = ""
fmt="{{0:>{0}}} |".format(fields_to_display[0]["width"] + 1)
s += fmt.format(vm.name)
fmt="{{0:>{0}}} |".format(fields_to_display[1]["width"] + 1)
s += fmt.format("Template VM")
fmt="{{0:>{0}}} |".format(fields_to_display[2]["width"] + 1)
s += fmt.format(size_to_human(vm_sz))
if vm.is_running():
s += " <-- The VM is running, please shut it down before proceeding with the backup!"
there_are_running_vms = True
print_callback(s)
# Dom0 user home
if not 'dom0' in exclude_list:
local_user = grp.getgrnam('qubes').gr_mem[0]
home_dir = pwd.getpwnam(local_user).pw_dir
# Home dir should have only user-owned files, so fix it now to prevent
# permissions problems - some root-owned files can left after
# 'sudo bash' and similar commands
subprocess.check_call(['sudo', 'chown', '-R', local_user, home_dir])
home_sz = get_disk_usage(home_dir)
home_to_backup = [ { "path" : home_dir, "size": home_sz, "subdir": 'dom0-home'} ]
files_to_backup += home_to_backup
s = ""
fmt="{{0:>{0}}} |".format(fields_to_display[0]["width"] + 1)
s += fmt.format('Dom0')
fmt="{{0:>{0}}} |".format(fields_to_display[1]["width"] + 1)
s += fmt.format("User home")
fmt="{{0:>{0}}} |".format(fields_to_display[2]["width"] + 1)
s += fmt.format(size_to_human(home_sz))
print_callback(s)
total_backup_sz = 0
for file in files_to_backup:
total_backup_sz += file["size"]
s = ""
for f in fields_to_display:
fmt="{{0:-^{0}}}-+".format(f["width"] + 1)
s += fmt.format('-')
print_callback(s)
s = ""
fmt="{{0:>{0}}} |".format(fields_to_display[0]["width"] + 1)
s += fmt.format("Total size:")
fmt="{{0:>{0}}} |".format(fields_to_display[1]["width"] + 1 + 2 + fields_to_display[2]["width"] + 1)
s += fmt.format(size_to_human(total_backup_sz))
print_callback(s)
s = ""
for f in fields_to_display:
fmt="{{0:-^{0}}}-+".format(f["width"] + 1)
s += fmt.format('-')
print_callback(s)
stat = os.statvfs(base_backup_dir)
backup_fs_free_sz = stat.f_bsize * stat.f_bavail
print_callback("")
if (total_backup_sz > backup_fs_free_sz):
raise QubesException("Not enough space avilable on the backup filesystem!")
if (there_are_running_vms):
raise QubesException("Please shutdown all VMs before proceeding.")
print_callback("-> Available space: {0}".format(size_to_human(backup_fs_free_sz)))
return files_to_backup
