def restore(self, queue, volume, download_finished):
tmp_mpoint = mkdtemp()
volume.mount(tmp_mpoint)
try:
try:
cmd1 = (which('pigz'), '-d')
except LookupError:
cmd1 = ('gzip', '-d')
cmd2 = ('tar', 'px', '-C', tmp_mpoint)
compressor = subprocess.Popen(cmd1,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
close_fds=True)
tar = subprocess.Popen(cmd2,
stdin=compressor.stdout,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
close_fds=True)
self.concat_chunks(queue, download_finished, compressor.stdin)
compressor.stdin.close()
r_code = compressor.wait()
if r_code:
raise Exception('Archiver finished with return code %s' %
r_code)
r_code = tar.wait()
if r_code:
raise Exception('Tar finished with return code %s' % r_code)
finally:
mount.umount(tmp_mpoint)
def umount(self):
try:
self._check(fstype=False, device=True)
except:
return
mod_mount.umount(self.device)
def umount(self):
try:
self._check(fstype=False, device=True)
except:
return
mod_mount.umount(self.device)
def _create(self, volume, snapshot, snap_lv, tranzit_path, complete_cb):
try:
chunk_prefix = '%s.data' % snapshot.id
snapshot.path = None
snap_mpoint = mkdtemp()
try:
opts = []
if volume.fstype == 'xfs':
opts += ['-o', 'nouuid,ro']
mount.mount(snap_lv, snap_mpoint, *opts)
tar_cmd = ['tar', 'cp', '-C', snap_mpoint, '.']
pigz_bins = whereis('pigz')
compress_cmd = [pigz_bins[0] if pigz_bins else 'gzip', '-5']
self._logger.debug("Creating and compressing snapshot data.")
tar = subprocess.Popen(tar_cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, close_fds=True)
compress = subprocess.Popen(compress_cmd, stdin=tar.stdout, stdout=subprocess.PIPE, stderr=subprocess.PIPE, close_fds=True)
tar.stdout.close() # Allow tar to receive a SIGPIPE if compress exits.
split = threading.Thread(target=self._split, name='split',
args=(compress.stdout, tranzit_path, chunk_prefix, snapshot))
split.start()
uploaders = []
for i in range(2):
uploader = threading.Thread(name="Uploader-%s" % i, target=self._uploader,
args=(volume.snap_backend['path'], snapshot))
self._logger.debug("Starting uploader '%s'", uploader.getName())
uploader.start()
uploaders.append(uploader)
self._logger.debug('uploaders started. waiting compress')
compress.wait()
self._logger.debug('compress completed (code: %s). waiting split', compress.returncode)
if compress.returncode:
raise StorageError('Compress process terminated with exit code %s. <err>: %s' % (compress.returncode, compress.stderr.read()))
split.join()
self._logger.debug('split completed. waiting uploaders')
for uploader in uploaders:
uploader.join()
self._logger.debug('uploaders completed')
if self._inner_exc_info:
t, e, s = self._inner_exc_info
raise t, e, s
finally:
self._return_ev.set()
mount.umount(snap_mpoint)
os.rmdir(snap_mpoint)
self._lvm.remove_lv(snap_lv)
self._inner_exc_info = None
self._state_map[snapshot.id] = Snapshot.COMPLETED
except (Exception, BaseException), e:
self._state_map[snapshot.id] = Snapshot.FAILED
self._logger.exception('Snapshot creation failed. %s' % e)
def handle_request(self, req_message, resp_message):
self.umounted = False
self.device_name = cassandra.ini.get(CNF_SECTION, OPT_STORAGE_DEVICE_NAME)
cassandra.stop_service()
system2('sync', shell=True)
mount.umount(self.device_name)
self.umounted = True
volume_id = cassandra.ini.get(CNF_SECTION, OPT_STORAGE_VOLUME_ID)
resp_message.body.update(dict(
status = 'ok',
snapshot_id = cassandra.create_snapshot(volume_id),
timestamp = time.strftime('%Y-%m-%d %H-%M')
))
def upload_lvm_snapshot(self, lvm_snap, tags, path):
"""
Method which uploads data from lvm snapshot to cloud storage and
updates snapshot status.
EphVolume runs this method in separate thread
"""
try:
self._snap_status = self.QUEUED
mpoint = tempfile.mkdtemp()
opts = []
if coreutils.blkid(lvm_snap.device).get('type') == 'xfs':
opts += ['-o', 'nouuid,ro']
mount.mount(lvm_snap.device, mpoint, *opts)
self.data_size = coreutils.statvfs(mpoint)['used']
try:
transfer = cloudfs.LargeTransfer(
src=mpoint + '/',
dst=path,
tar_it=True,
gzip_it=True,
tags=tags,
transfer_id=self.id)
self._snap_status = self.IN_PROGRESS
manifesto = transfer.run()
self.path = manifesto.cloudfs_path
self._snap_status = self.COMPLETED
finally:
mount.umount(mpoint)
os.rmdir(mpoint)
except:
self._snap_status = self.FAILED
LOG.exception('Caught error while uploading LVM snapshot')
finally:
lvm_snap.destroy()
def upload_lvm_snapshot(self, lvm_snap, tags, path):
"""
Method which uploads data from lvm snapshot to cloud storage and
updates snapshot status.
EphVolume runs this method in separate thread
"""
try:
self._snap_status = self.QUEUED
mpoint = tempfile.mkdtemp()
opts = []
if coreutils.blkid(lvm_snap.device).get('type') == 'xfs':
opts += ['-o', 'nouuid,ro']
mount.mount(lvm_snap.device, mpoint, *opts)
self.data_size = coreutils.statvfs(mpoint)['used']
try:
cmd = ['/bin/tar', 'cp', mpoint]
stream = subprocess.Popen(cmd, stdout=subprocess.PIPE, close_fds=True).stdout
src = cloudfs.NamedStream(stream, 'lvm_snapshot', streamer='tar', extension='tar')
dst = path
transfer = largetransfer.Upload(src, dst, tags=tags, transfer_id=self.id)
self._snap_status = self.IN_PROGRESS
transfer.apply_async()
transfer.join()
manifesto = transfer.manifest
self.path = manifesto.cloudfs_path
self._snap_status = self.COMPLETED
finally:
mount.umount(mpoint)
os.rmdir(mpoint)
except:
self._snap_status = self.FAILED
LOG.exception('Caught error while uploading LVM snapshot')
finally:
lvm_snap.destroy()
def restore(self, queue, volume, download_finished):
tmp_mpoint = mkdtemp()
volume.mount(tmp_mpoint)
try:
pigz_bins = whereis('pigz')
cmd1 = ('pigz' if pigz_bins else 'gzip', '-d')
cmd2 = ('tar', 'px', '-C', tmp_mpoint)
compressor = subprocess.Popen(cmd1, stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE, close_fds=True)
tar = subprocess.Popen(cmd2, stdin=compressor.stdout, stdout=subprocess.PIPE, stderr=subprocess.PIPE, close_fds=True)
self.concat_chunks(queue, download_finished, compressor.stdin)
compressor.stdin.close()
r_code = compressor.wait()
if r_code:
raise Exception('Archiver finished with return code %s' % r_code)
r_code = tar.wait()
if r_code:
raise Exception('Tar finished with return code %s' % r_code)
finally:
mount.umount(tmp_mpoint)
def upload_lvm_snapshot(self, lvm_snap, tags, path):
"""
Method which uploads data from lvm snapshot to cloud storage and
updates snapshot status.
EphVolume runs this method in separate thread
"""
try:
self._snap_status = self.QUEUED
mpoint = tempfile.mkdtemp()
opts = []
if coreutils.blkid(lvm_snap.device).get('type') == 'xfs':
opts += ['-o', 'nouuid,ro']
mount.mount(lvm_snap.device, mpoint, *opts)
self.data_size = coreutils.statvfs(mpoint)['used']
try:
transfer = cloudfs.LargeTransfer(src=mpoint + '/',
dst=path,
tar_it=True,
gzip_it=True,
tags=tags,
transfer_id=self.id)
self._snap_status = self.IN_PROGRESS
manifesto = transfer.run()
self.path = manifesto.cloudfs_path
self._snap_status = self.COMPLETED
finally:
mount.umount(mpoint)
os.rmdir(mpoint)
except:
self._snap_status = self.FAILED
LOG.exception('Caught error while uploading LVM snapshot')
finally:
lvm_snap.destroy()
def test_umount_not_mounted():
m = mock.Mock(side_effect=linux.LinuxError('', '', 'umount: /mnt: not mounted\n', 1, ()))
with mock.patch('scalarizr.linux.system', m):
mount.umount('/mnt')
assert m.called
def rebundle(self):
rebundle_dir = tempfile.mkdtemp()
try:
pl = bus.platform
proj_id = pl.get_numeric_project_id()
proj_name = pl.get_project_id()
cloudstorage = pl.new_storage_client()
tmp_mount_dir = os.path.join(rebundle_dir, 'root')
os.makedirs(tmp_mount_dir)
image_name = 'disk.raw'
image_path = os.path.join(rebundle_dir, image_name)
root_size = coreutils.statvfs('/')['size']
LOG.debug('Creating image file %s' % image_path)
with open(image_path, 'w') as f:
f.truncate(root_size + 1 * 1024)
try:
LOG.debug('Creating partition table on image')
system(('parted', image_path, 'mklabel', 'msdos'))
system(('parted', image_path, 'mkpart', 'primary', 'ext2', 1,
str(root_size / (1024 * 1024))))
# Map disk image
out = system(('kpartx', '-av', image_path))[0]
try:
loop = re.search('(/dev/loop\d+)', out).group(1)
root_dev_name = '/dev/mapper/%sp1' % loop.split('/')[-1]
LOG.info('Creating filesystem')
storage2.filesystem('ext4').mkfs(root_dev_name)
dev_uuid = uuid.uuid4()
system(('tune2fs', '-U', str(dev_uuid), root_dev_name))
mount.mount(root_dev_name, tmp_mount_dir)
try:
lines = system(('/bin/mount', '-l'))[0].splitlines()
exclude_dirs = set()
for line in lines:
mpoint = line.split()[2]
if mpoint != '/':
exclude_dirs.add(mpoint)
exclude_dirs.update(self.exclude_dirs)
excludes = [
os.path.join(ex, '**') for ex in exclude_dirs
]
excludes.extend(self.exclude_files)
excludes.extend(self._excludes)
LOG.info('Copying root filesystem to image')
rsync('/',
tmp_mount_dir,
archive=True,
hard_links=True,
times=True,
sparse=True,
exclude=excludes)
LOG.info('Cleanup image')
self._create_spec_devices(tmp_mount_dir)
LOG.debug('Removing roles-builder user')
sh = pexpect.spawn('/bin/sh')
try:
sh.sendline('chroot %s' % tmp_mount_dir)
sh.expect('#')
sh.sendline('userdel -rf %s' % ROLEBUILDER_USER)
sh.expect('#')
finally:
sh.close()
""" Patch fstab"""
fstab_path = os.path.join(tmp_mount_dir, 'etc/fstab')
if os.path.exists(fstab_path):
with open(fstab_path) as f:
fstab = f.read()
new_fstab = re.sub('UUID=\S+\s+/\s+(.*)',
'UUID=%s / \\1' % dev_uuid,
fstab)
with open(fstab_path, 'w') as f:
f.write(new_fstab)
finally:
mount.umount(root_dev_name)
finally:
system(('kpartx', '-d', image_path))
LOG.info('Compressing image.')
arch_name = '%s.tar.gz' % self._role_name.lower()
arch_path = os.path.join(rebundle_dir, arch_name)
tar = Tar()
tar.create().gzip().sparse()
tar.archive(arch_path)
tar.add(image_name, rebundle_dir)
system(str(tar), shell=True)
finally:
os.unlink(image_path)
try:
LOG.info('Uploading compressed image to cloud storage')
uploader = transfer.Transfer(logger=LOG)
tmp_bucket_name = 'scalr-images-%s-%s' % (random.randint(
1, 1000000), int(time.time()))
try:
remote_path = 'gcs://%s/' % tmp_bucket_name
uploader.upload((arch_path, ), remote_path)
except:
try:
objs = cloudstorage.objects()
objs.delete(bucket=tmp_bucket_name,
object=arch_name).execute()
except:
pass
cloudstorage.buckets().delete(
bucket=tmp_bucket_name).execute()
raise
finally:
os.unlink(arch_path)
finally:
shutil.rmtree(rebundle_dir)
try:
goog_image_name = self._role_name.lower().replace('_', '-')
LOG.info('Registering new image %s' % goog_image_name)
# TODO: check duplicate names
compute = pl.new_compute_client()
current_image_fq = pl.get_image().split('/')
current_img_project = current_image_fq[1]
current_img_name = current_image_fq[3]
current_img_obj = compute.images().get(
project=current_img_project, image=current_img_name).execute()
kernel = current_img_obj['preferredKernel']
image_url = 'http://storage.googleapis.com/%s/%s' % (
tmp_bucket_name, arch_name)
req_body = dict(name=goog_image_name,
sourceType='RAW',
preferredKernel=kernel,
rawDisk=dict(containerType='TAR',
source=image_url))
req = compute.images().insert(project=proj_id, body=req_body)
operation = req.execute()['name']
LOG.info('Waiting for image to register')
def image_is_ready():
req = compute.globalOperations().get(project=proj_id,
operation=operation)
res = req.execute()
if res['status'] == 'DONE':
if res.get('error'):
errors = []
for e in res['error']['errors']:
err_text = '%s: %s' % (e['code'], e['message'])
errors.append(err_text)
raise Exception('\n'.join(errors))
return True
return False
wait_until(image_is_ready, logger=LOG, timeout=600)
finally:
objs = cloudstorage.objects()
objs.delete(bucket=tmp_bucket_name, object=arch_name).execute()
cloudstorage.buckets().delete(bucket=tmp_bucket_name).execute()
return '%s/images/%s' % (proj_name, goog_image_name)
def rebundle(self):
rebundle_dir = tempfile.mkdtemp()
try:
pl = bus.platform
proj_id = pl.get_numeric_project_id()
proj_name = pl.get_project_id()
cloudstorage = pl.new_storage_client()
tmp_mount_dir = os.path.join(rebundle_dir, 'root')
os.makedirs(tmp_mount_dir)
image_name = 'disk.raw'
image_path = os.path.join(rebundle_dir, image_name)
root_size = coreutils.statvfs('/')['size']
LOG.debug('Creating image file %s' % image_path)
with open(image_path, 'w') as f:
f.truncate(root_size + 1*1024)
try:
LOG.debug('Creating partition table on image')
system(('parted', image_path, 'mklabel', 'msdos'))
system(('parted', image_path, 'mkpart', 'primary', 'ext2', 1, str(root_size/(1024*1024))))
# Map disk image
out = system(('kpartx', '-av', image_path))[0]
try:
loop = re.search('(/dev/loop\d+)', out).group(1)
root_dev_name = '/dev/mapper/%sp1' % loop.split('/')[-1]
LOG.info('Creating filesystem')
storage2.filesystem('ext4').mkfs(root_dev_name)
dev_uuid = uuid.uuid4()
system(('tune2fs', '-U', str(dev_uuid), root_dev_name))
mount.mount(root_dev_name, tmp_mount_dir)
try:
lines = system(('/bin/mount', '-l'))[0].splitlines()
exclude_dirs = set()
for line in lines:
mpoint = line.split()[2]
if mpoint != '/':
exclude_dirs.add(mpoint)
exclude_dirs.update(self.exclude_dirs)
excludes = [os.path.join(ex, '**') for ex in exclude_dirs]
excludes.extend(self.exclude_files)
excludes.extend(self._excludes)
LOG.info('Copying root filesystem to image')
rsync('/', tmp_mount_dir, archive=True,
hard_links=True,
times=True,
sparse=True,
exclude=excludes)
LOG.info('Cleanup image')
self._create_spec_devices(tmp_mount_dir)
LOG.debug('Removing roles-builder user')
sh = pexpect.spawn('/bin/sh')
try:
sh.sendline('chroot %s' % tmp_mount_dir)
sh.expect('#')
sh.sendline('userdel -rf %s' % ROLEBUILDER_USER)
sh.expect('#')
finally:
sh.close()
""" Patch fstab"""
fstab_path = os.path.join(tmp_mount_dir, 'etc/fstab')
if os.path.exists(fstab_path):
with open(fstab_path) as f:
fstab = f.read()
new_fstab = re.sub('UUID=\S+\s+/\s+(.*)', 'UUID=%s / \\1' % dev_uuid, fstab)
with open(fstab_path, 'w') as f:
f.write(new_fstab)
finally:
mount.umount(root_dev_name)
finally:
system(('kpartx', '-d', image_path))
LOG.info('Compressing image.')
arch_name = '%s.tar.gz' % self._role_name.lower()
arch_path = os.path.join(rebundle_dir, arch_name)
tar = Tar()
tar.create().gzip().sparse()
tar.archive(arch_path)
tar.add(image_name, rebundle_dir)
system(str(tar), shell=True)
finally:
os.unlink(image_path)
try:
LOG.info('Uploading compressed image to cloud storage')
uploader = transfer.Transfer(logger=LOG)
tmp_bucket_name = 'scalr-images-%s-%s' % (
random.randint(1,1000000), int(time.time()))
try:
remote_path = 'gcs://%s/' % tmp_bucket_name
uploader.upload((arch_path,), remote_path)
except:
try:
objs = cloudstorage.objects()
objs.delete(bucket=tmp_bucket_name, object=arch_name).execute()
except:
pass
cloudstorage.buckets().delete(bucket=tmp_bucket_name).execute()
raise
finally:
os.unlink(arch_path)
finally:
shutil.rmtree(rebundle_dir)
try:
goog_image_name = self._role_name.lower().replace('_', '-')
LOG.info('Registering new image %s' % goog_image_name)
# TODO: check duplicate names
compute = pl.new_compute_client()
current_image_fq = pl.get_image().split('/')
current_img_project = current_image_fq[1]
current_img_name = current_image_fq[3]
current_img_obj = compute.images().get(project=current_img_project,
image=current_img_name).execute()
kernel = current_img_obj['preferredKernel']
image_url = 'http://storage.googleapis.com/%s/%s' % (
tmp_bucket_name, arch_name)
req_body = dict(
name=goog_image_name,
sourceType='RAW',
preferredKernel=kernel,
rawDisk=dict(
containerType='TAR',
source=image_url
)
)
req = compute.images().insert(project=proj_id, body=req_body)
operation = req.execute()['name']
LOG.info('Waiting for image to register')
def image_is_ready():
req = compute.globalOperations().get(project=proj_id, operation=operation)
res = req.execute()
if res['status'] == 'DONE':
if res.get('error'):
errors = []
for e in res['error']['errors']:
err_text = '%s: %s' % (e['code'], e['message'])
errors.append(err_text)
raise Exception('\n'.join(errors))
return True
return False
wait_until(image_is_ready, logger=LOG, timeout=600)
finally:
objs = cloudstorage.objects()
objs.delete(bucket=tmp_bucket_name, object=arch_name).execute()
cloudstorage.buckets().delete(bucket=tmp_bucket_name).execute()
return '%s/images/%s' % (proj_name, goog_image_name)
def _tearDown(self):
mount.umount("/dev/sdb1", clean_fstab=True)
def test_umount_raise_error():
m = mock.Mock(side_effect=linux.LinuxError(
'', '', 'umount: /: device is busy.\n', 1, ()))
with mock.patch('scalarizr.linux.system', m):
mount.umount('/')
def test_umount_not_mounted():
m = mock.Mock(side_effect=linux.LinuxError(
'', '', 'umount: /mnt: not mounted\n', 1, ()))
with mock.patch('scalarizr.linux.system', m):
mount.umount('/mnt')
assert m.called
def test_umount():
with mock.patch('scalarizr.linux.system') as m:
mount.umount('/mnt/mpoint')
assert m.called
def umount(self): self._check() mod_mount.umount(self.device)
def test_umount():
with mock.patch('scalarizr.linux.system') as m:
mount.umount('/mnt/mpoint')
assert m.called
def _tearDown(self):
mount.umount("/dev/sdb1", clean_fstab=True)
def _umount_detach_delete_volume(self, devname, volume):
mount.umount(devname)
ebstool.detach_volume(None, volume, logger=self._logger)
volume.delete()
def _create(self, volume, snapshot, snap_lv, tranzit_path, complete_cb):
try:
chunk_prefix = '%s.data' % snapshot.id
snapshot.path = None
snap_mpoint = mkdtemp()
try:
opts = []
if volume.fstype == 'xfs':
opts += ['-o', 'nouuid,ro']
mount.mount(snap_lv, snap_mpoint, *opts)
tar_cmd = ['tar', 'cp', '-C', snap_mpoint, '.']
if which('pigz'):
compress_cmd = [which('pigz'), '-5']
else:
compress_cmd = ['gzip', '-5']
self._logger.debug("Creating and compressing snapshot data.")
tar = subprocess.Popen(tar_cmd,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
close_fds=True)
compress = subprocess.Popen(compress_cmd,
stdin=tar.stdout,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
close_fds=True)
tar.stdout.close(
) # Allow tar to receive a SIGPIPE if compress exits.
split = threading.Thread(target=self._split,
name='split',
args=(compress.stdout, tranzit_path,
chunk_prefix, snapshot))
split.start()
uploaders = []
for i in range(2):
uploader = threading.Thread(
name="Uploader-%s" % i,
target=self._uploader,
args=(volume.snap_backend['path'], snapshot))
self._logger.debug("Starting uploader '%s'",
uploader.getName())
uploader.start()
uploaders.append(uploader)
self._logger.debug('uploaders started. waiting compress')
compress.wait()
self._logger.debug(
'compress completed (code: %s). waiting split',
compress.returncode)
if compress.returncode:
raise StorageError(
'Compress process terminated with exit code %s. <err>: %s'
% (compress.returncode, compress.stderr.read()))
split.join()
self._logger.debug('split completed. waiting uploaders')
for uploader in uploaders:
uploader.join()
self._logger.debug('uploaders completed')
if self._inner_exc_info:
t, e, s = self._inner_exc_info
raise t, e, s
finally:
self._return_ev.set()
mount.umount(snap_mpoint)
os.rmdir(snap_mpoint)
self._lvm.remove_lv(snap_lv)
self._inner_exc_info = None
self._state_map[snapshot.id] = Snapshot.COMPLETED
except (Exception, BaseException), e:
self._state_map[snapshot.id] = Snapshot.FAILED
self._logger.exception('Snapshot creation failed. %s' % e)
def test_umount_raise_error():
m = mock.Mock(side_effect=linux.LinuxError('', '', 'umount: /: device is busy.\n', 1, ()))
with mock.patch('scalarizr.linux.system', m):
mount.umount('/')
def _destroy(self, force, **kwds):
mount.umount(self.mpoint)
