def __mount_ebs_volume(self):
"""
Attach, format (if necessary) and mount the EBS volume with the same cluster ordinal as
this node.
"""
ebs_volume_size = self.instance_tag('ebs_volume_size') or '0'
ebs_volume_size = int(ebs_volume_size)
if ebs_volume_size:
instance_name = self.instance_tag('Name')
cluster_ordinal = int(self.instance_tag('cluster_ordinal'))
volume_name = '%s__%d' % (instance_name, cluster_ordinal)
volume = EC2VolumeHelper(ec2=self.ec2,
availability_zone=self.availability_zone,
name=volume_name,
size=ebs_volume_size,
volume_type="gp2")
# TODO: handle case where volume is already attached
device_ext = '/dev/sdf'
device = '/dev/xvdf'
volume.attach(self.instance_id, device_ext)
# Wait for inode to appear and make sure its a block device
while True:
try:
assert stat.S_ISBLK(os.stat(device).st_mode)
break
except OSError as e:
if e.errno == errno.ENOENT:
time.sleep(1)
else:
raise
# Only format empty volumes
volume_label = volume_label_hash(volume_name)
if check_output(['file', '-sL',
device]).strip() == device + ': data':
check_call(['mkfs', '-t', 'ext4', device])
check_call(['e2label', device, volume_label])
else:
# If the volume is not empty, verify the file system label
actual_label = check_output(['e2label', device]).strip()
if actual_label != volume_label:
raise AssertionError(
"Expected volume label '%s' (derived from '%s') but got '%s'"
% (volume_label, volume_name, actual_label))
current_mount_point = self.__mount_point(device)
if current_mount_point is None:
mkdir_p(self.persistent_dir)
check_call(['mount', device, self.persistent_dir])
elif current_mount_point == self.persistent_dir:
pass
else:
raise RuntimeError(
"Can't mount device %s on '%s' since it is already mounted on '%s'"
% (device, self.persistent_dir, current_mount_point))
else:
# No persistent volume is attached and the root volume is off limits, so we will need
# to place persistent data on the ephemeral volume.
self.persistent_dir = self.ephemeral_dir
def __mount_ebs_volume( self ):
"""
Attach, format (if necessary) and mount the EBS volume with the same cluster ordinal as
this node.
"""
ebs_volume_size = self.__get_instance_tag( self.instance_id, 'ebs_volume_size' ) or '0'
ebs_volume_size = int( ebs_volume_size )
if ebs_volume_size:
instance_name = self.__get_instance_tag( self.instance_id, 'Name' )
cluster_ordinal = int( self.__get_instance_tag( self.instance_id, 'cluster_ordinal' ) )
volume_name = '%s__%d' % (instance_name, cluster_ordinal)
volume = EC2VolumeHelper( ec2=self.ec2,
availability_zone=self.availability_zone,
name=volume_name,
size=ebs_volume_size,
volume_type="gp2")
# TODO: handle case where volume is already attached
device_ext = '/dev/sdf'
device = '/dev/xvdf'
volume.attach( self.instance_id, device_ext )
# Wait for inode to appear and make sure its a block device
while True:
try:
assert stat.S_ISBLK( os.stat( device ).st_mode )
break
except OSError as e:
if e.errno == errno.ENOENT:
time.sleep( 1 )
else:
raise
# Only format empty volumes
volume_label = volume_label_hash( volume_name )
if check_output( [ 'file', '-sL', device ] ).strip( ) == device + ': data':
check_call( [ 'mkfs', '-t', 'ext4', device ] )
check_call( [ 'e2label', device, volume_label ] )
else:
# if the volume is not empty, verify the file system label
actual_label = check_output( [ 'e2label', device ] ).strip( )
if actual_label != volume_label:
raise AssertionError(
"Expected volume label '%s' (derived from '%s') but got '%s'" %
(volume_label, volume_name, actual_label) )
current_mount_point = self.__mount_point( device )
if current_mount_point is None:
mkdir_p( self.persistent_dir )
check_call( [ 'mount', device, self.persistent_dir ] )
elif current_mount_point == self.persistent_dir:
pass
else:
raise RuntimeError(
"Can't mount device %s on '%s' since it is already mounted on '%s'" % (
device, self.persistent_dir, current_mount_point) )
else:
# No persistent volume is attached and the root volume is off limits, so we will need
# to place persistent data on the ephemeral volume.
self.persistent_dir = self.ephemeral_dir
def __mount_ebs_volume( self ):
"""
Attach, format (if necessary) and mount the EBS volume with the same cluster ordinal as
this node.
"""
ebs_volume_size = self.__get_instance_tag( self.instance_id, 'ebs_volume_size' ) or '0'
ebs_volume_size = int( ebs_volume_size )
if ebs_volume_size:
instance_name = self.__get_instance_tag( self.instance_id, 'Name' )
cluster_ordinal = int( self.__get_instance_tag( self.instance_id, 'cluster_ordinal' ) )
volume_name = '%s__%d' % ( instance_name, cluster_ordinal )
volume = EC2VolumeHelper( ec2=self.ec2,
availability_zone=self.availability_zone,
name=volume_name,
size=ebs_volume_size )
# TODO: handle case where volume is already attached
volume.attach( self.instance_id, '/dev/sdf' )
# Only format empty volumes
volume_label = volume_label_hash( volume_name )
if check_output( [ 'file', '-sL', '/dev/xvdf' ] ).strip( ) == '/dev/xvdf: data':
check_call( [ 'mkfs', '-t', 'ext4', '/dev/xvdf' ] )
check_call( [ 'e2label', '/dev/xvdf', volume_label ] )
else:
# if the volume is not empty, verify the file system label
actual_label = check_output( [ 'e2label', '/dev/xvdf' ] ).strip( )
if actual_label != volume_label:
raise AssertionError(
"Expected volume label '%s' (derived from '%s') but got '%s'" %
( volume_label, volume_name, actual_label ) )
current_mount_point = self.__mount_point( '/dev/xvdf' )
if current_mount_point is None:
check_call( [ 'mount', '/dev/xvdf', self.persistent_dir ] )
elif current_mount_point == self.persistent_dir:
pass
else:
raise RuntimeError(
"Can't mount device /dev/xvdf on '%s' since it is already mounted on '%s'" % (
self.persistent_dir, current_mount_point) )
else:
# No persistent volume is attached and the root volume is off limits, so we will need
# to place persistent data on the ephemeral volume.
self.persistent_dir = self.ephemeral_dir
