Current File : //proc/self/root/usr/lib/python2.7/site-packages/ansible/modules/extras/system/filesystem.py
#!/usr/bin/python
# -*- coding: utf-8 -*-
# (c) 2013, Alexander Bulimov <lazywolf0@gmail.com>
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
DOCUMENTATION = '''
---
author: "Alexander Bulimov (@abulimov)"
module: filesystem
short_description: Makes file system on block device
description:
- This module creates file system.
version_added: "1.2"
options:
fstype:
description:
- File System type to be created.
- reiserfs support was added in 2.2.
required: true
dev:
description:
- Target block device.
required: true
force:
choices: [ "yes", "no" ]
default: "no"
description:
- If yes, allows to create new filesystem on devices that already has filesystem.
required: false
resizefs:
choices: [ "yes", "no" ]
default: "no"
description:
- If yes, if the block device and filessytem size differ, grow the filesystem into the space. Note, XFS Will only grow if mounted.
required: false
version_added: "2.0"
opts:
description:
- List of options to be passed to mkfs command.
notes:
- uses mkfs command
'''
EXAMPLES = '''
# Create a ext2 filesystem on /dev/sdb1.
- filesystem: fstype=ext2 dev=/dev/sdb1
# Create a ext4 filesystem on /dev/sdb1 and check disk blocks.
- filesystem: fstype=ext4 dev=/dev/sdb1 opts="-cc"
'''
def _get_dev_size(dev, module):
""" Return size in bytes of device. Returns int """
blockdev_cmd = module.get_bin_path("blockdev", required=True)
rc, devsize_in_bytes, err = module.run_command("%s %s %s" % (blockdev_cmd, "--getsize64", dev))
return int(devsize_in_bytes)
def _get_fs_size(fssize_cmd, dev, module):
""" Return size in bytes of filesystem on device. Returns int """
cmd = module.get_bin_path(fssize_cmd, required=True)
if 'tune2fs' == fssize_cmd:
# Get Block count and Block size
rc, size, err = module.run_command("%s %s %s" % (cmd, '-l', dev))
if rc == 0:
for line in size.splitlines():
if 'Block count:' in line:
block_count = int(line.split(':')[1].strip())
elif 'Block size:' in line:
block_size = int(line.split(':')[1].strip())
break
else:
module.fail_json(msg="Failed to get block count and block size of %s with %s" % (dev, cmd), rc=rc, err=err )
elif 'xfs_info' == fssize_cmd:
# Get Block count and Block size
rc, size, err = module.run_command("%s %s" % (cmd, dev))
if rc == 0:
for line in size.splitlines():
#if 'data' in line:
if 'data ' in line:
block_size = int(line.split('=')[2].split()[0])
block_count = int(line.split('=')[3].split(',')[0])
break
else:
module.fail_json(msg="Failed to get block count and block size of %s with %s" % (dev, cmd), rc=rc, err=err )
elif 'btrfs' == fssize_cmd:
#ToDo
# There is no way to get the blocksize and blockcount for btrfs filesystems
block_size = 1
block_count = 1
return block_size*block_count
def main():
module = AnsibleModule(
argument_spec = dict(
fstype=dict(required=True, aliases=['type']),
dev=dict(required=True, aliases=['device']),
opts=dict(),
force=dict(type='bool', default='no'),
resizefs=dict(type='bool', default='no'),
),
supports_check_mode=True,
)
# There is no "single command" to manipulate filesystems, so we map them all out and their options
fs_cmd_map = {
'ext2' : {
'mkfs' : 'mkfs.ext2',
'grow' : 'resize2fs',
'grow_flag' : None,
'force_flag' : '-F',
'fsinfo': 'tune2fs',
},
'ext3' : {
'mkfs' : 'mkfs.ext3',
'grow' : 'resize2fs',
'grow_flag' : None,
'force_flag' : '-F',
'fsinfo': 'tune2fs',
},
'ext4' : {
'mkfs' : 'mkfs.ext4',
'grow' : 'resize2fs',
'grow_flag' : None,
'force_flag' : '-F',
'fsinfo': 'tune2fs',
},
'reiserfs' : {
'mkfs' : 'mkfs.reiserfs',
'grow' : 'resize_reiserfs',
'grow_flag' : None,
'force_flag' : '-f',
'fsinfo': 'reiserfstune',
},
'ext4dev' : {
'mkfs' : 'mkfs.ext4',
'grow' : 'resize2fs',
'grow_flag' : None,
'force_flag' : '-F',
'fsinfo': 'tune2fs',
},
'xfs' : {
'mkfs' : 'mkfs.xfs',
'grow' : 'xfs_growfs',
'grow_flag' : None,
'force_flag' : '-f',
'fsinfo': 'xfs_info',
},
'btrfs' : {
'mkfs' : 'mkfs.btrfs',
'grow' : 'btrfs',
'grow_flag' : 'filesystem resize',
'force_flag' : '-f',
'fsinfo': 'btrfs',
}
}
dev = module.params['dev']
fstype = module.params['fstype']
opts = module.params['opts']
force = module.boolean(module.params['force'])
resizefs = module.boolean(module.params['resizefs'])
changed = False
try:
_ = fs_cmd_map[fstype]
except KeyError:
module.exit_json(changed=False, msg="WARNING: module does not support this filesystem yet. %s" % fstype)
mkfscmd = fs_cmd_map[fstype]['mkfs']
force_flag = fs_cmd_map[fstype]['force_flag']
growcmd = fs_cmd_map[fstype]['grow']
fssize_cmd = fs_cmd_map[fstype]['fsinfo']
if not os.path.exists(dev):
module.fail_json(msg="Device %s not found."%dev)
cmd = module.get_bin_path('blkid', required=True)
rc,raw_fs,err = module.run_command("%s -c /dev/null -o value -s TYPE %s" % (cmd, dev))
fs = raw_fs.strip()
if fs == fstype and resizefs == False and not force:
module.exit_json(changed=False)
elif fs == fstype and resizefs == True:
# Get dev and fs size and compare
devsize_in_bytes = _get_dev_size(dev, module)
fssize_in_bytes = _get_fs_size(fssize_cmd, dev, module)
if fssize_in_bytes < devsize_in_bytes:
fs_smaller = True
else:
fs_smaller = False
if module.check_mode and fs_smaller:
module.exit_json(changed=True, msg="Resizing filesystem %s on device %s" % (fstype,dev))
elif module.check_mode and not fs_smaller:
module.exit_json(changed=False, msg="%s filesystem is using the whole device %s" % (fstype, dev))
elif fs_smaller:
cmd = module.get_bin_path(growcmd, required=True)
rc,out,err = module.run_command("%s %s" % (cmd, dev))
# Sadly there is no easy way to determine if this has changed. For now, just say "true" and move on.
# in the future, you would have to parse the output to determine this.
# thankfully, these are safe operations if no change is made.
if rc == 0:
module.exit_json(changed=True, msg=out)
else:
module.fail_json(msg="Resizing filesystem %s on device '%s' failed"%(fstype,dev), rc=rc, err=err)
else:
module.exit_json(changed=False, msg="%s filesystem is using the whole device %s" % (fstype, dev))
elif fs and not force:
module.fail_json(msg="'%s' is already used as %s, use force=yes to overwrite"%(dev,fs), rc=rc, err=err)
### create fs
if module.check_mode:
changed = True
else:
mkfs = module.get_bin_path(mkfscmd, required=True)
cmd = None
if opts is None:
cmd = "%s %s '%s'" % (mkfs, force_flag, dev)
else:
cmd = "%s %s %s '%s'" % (mkfs, force_flag, opts, dev)
rc,_,err = module.run_command(cmd)
if rc == 0:
changed = True
else:
module.fail_json(msg="Creating filesystem %s on device '%s' failed"%(fstype,dev), rc=rc, err=err)
module.exit_json(changed=changed)
# import module snippets
from ansible.module_utils.basic import *
if __name__ == '__main__':
main()
Mini Shell