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# Microsoft Azure Linux Agent
#
# Copyright 2014 Microsoft Corporation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# Requires Python 2.4+ and Openssl 1.0+
#
import azurelinuxagent.common.logger as logger
import azurelinuxagent.common.utils.fileutil as fileutil
import azurelinuxagent.common.utils.shellutil as shellutil
from azurelinuxagent.common.exception import ResourceDiskError
from azurelinuxagent.daemon.resourcedisk.default import ResourceDiskHandler
class FreeBSDResourceDiskHandler(ResourceDiskHandler):
"""
This class handles resource disk mounting for FreeBSD.
The resource disk locates at following slot:
scbus2 on blkvsc1 bus 0:
<Msft Virtual Disk 1.0> at scbus2 target 1 lun 0 (da1,pass2)
There are 2 variations based on partition table type:
1. MBR: The resource disk partition is /dev/da1s1
2. GPT: The resource disk partition is /dev/da1p2, /dev/da1p1 is for reserved usage.
"""
def __init__(self):
super(FreeBSDResourceDiskHandler, self).__init__()
@staticmethod
def parse_gpart_list(data):
dic = {}
for line in data.split('\n'):
if line.find("Geom name: ") != -1:
geom_name = line[11:]
elif line.find("scheme: ") != -1:
dic[geom_name] = line[8:]
return dic
def mount_resource_disk(self, mount_point):
fs = self.fs
if fs != 'ufs':
raise ResourceDiskError("Unsupported filesystem type:{0}, only ufs is supported.".format(fs))
# 1. Detect device
err, output = shellutil.run_get_output('gpart list')
if err:
raise ResourceDiskError("Unable to detect resource disk device:{0}".format(output))
disks = self.parse_gpart_list(output)
device = self.osutil.device_for_ide_port(1)
if device is None:
# fallback logic to find device
err, output = shellutil.run_get_output('camcontrol periphlist 2:1:0')
if err:
# try again on "3:1:0"
err, output = shellutil.run_get_output('camcontrol periphlist 3:1:0')
if err:
raise ResourceDiskError("Unable to detect resource disk device:{0}".format(output))
# 'da1: generation: 4 index: 1 status: MORE\npass2: generation: 4 index: 2 status: LAST\n'
for line in output.split('\n'):
index = line.find(':')
if index > 0:
geom_name = line[:index]
if geom_name in disks:
device = geom_name
break
if not device:
raise ResourceDiskError("Unable to detect resource disk device.")
logger.info('Resource disk device {0} found.', device)
# 2. Detect partition
partition_table_type = disks[device]
if partition_table_type == 'MBR':
provider_name = device + 's1'
elif partition_table_type == 'GPT':
provider_name = device + 'p2'
else:
raise ResourceDiskError("Unsupported partition table type:{0}".format(output))
err, output = shellutil.run_get_output('gpart show -p {0}'.format(device))
if err or output.find(provider_name) == -1:
raise ResourceDiskError("Resource disk partition not found.")
partition = '/dev/' + provider_name
logger.info('Resource disk partition {0} found.', partition)
# 3. Mount partition
mount_list = shellutil.run_get_output("mount")[1]
existing = self.osutil.get_mount_point(mount_list, partition)
if existing:
logger.info("Resource disk {0} is already mounted", partition)
return existing
fileutil.mkdir(mount_point, mode=0o755)
mount_cmd = 'mount -t {0} {1} {2}'.format(fs, partition, mount_point)
err = shellutil.run(mount_cmd, chk_err=False)
if err:
logger.info('Creating {0} filesystem on partition {1}'.format(fs, partition))
err, output = shellutil.run_get_output('newfs -U {0}'.format(partition))
if err:
raise ResourceDiskError("Failed to create new filesystem on partition {0}, error:{1}"
.format(partition, output))
err, output = shellutil.run_get_output(mount_cmd, chk_err=False)
if err:
raise ResourceDiskError("Failed to mount partition {0}, error {1}".format(partition, output))
logger.info("Resource disk partition {0} is mounted at {1} with fstype {2}", partition, mount_point, fs)
return mount_point
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