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MetaSchema� get_meta_doc)� ALL_DISTROS)� PER_INSTANCEZsfdiskZsgdiskZlsblkZblkidZblockdevZ partprobeZwipefsZLANG�Ca� This module is able to configure simple partition tables and filesystems.
.. note::
for more detail about configuration options for disk setup, see the disk
setup example
For convenience, aliases can be specified for disks using the
``device_aliases`` config key, which takes a dictionary of alias: path
mappings. There are automatic aliases for ``swap`` and ``ephemeral<X>``, where
``swap`` will always refer to the active swap partition and ``ephemeral<X>``
will refer to the block device of the ephemeral image.
Disk partitioning is done using the ``disk_setup`` directive. This config
directive accepts a dictionary where each key is either a path to a block
device or an alias specified in ``device_aliases``, and each value is the
configuration options for the device. File system configuration is done using
the ``fs_setup`` directive. This config directive accepts a list of
filesystem configs.
Z
cc_disk_setupz
Disk Setupz$Configure partitions and filesystemsaD device_aliases:
my_alias: /dev/sdb
disk_setup:
my_alias:
table_type: gpt
layout: [50, 50]
overwrite: true
fs_setup:
- label: fs1
filesystem: ext4
device: my_alias.1
cmd: mkfs -t %(filesystem)s -L %(label)s %(device)s
- label: fs2
device: my_alias.2
filesystem: ext4
mounts:
- ["my_alias.1", "/mnt1"]
- ["my_alias.2", "/mnt2"]
)�id�name�title� descriptionZdistrosZ frequencyZexamplesc s� |j di ��� �fdd�}|j d�}t|t�r�t||� |jdt|�� x�|j� D ]�\}}t|t�st|jd| � qRy*|jd� tj t
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See doc/examples/cloud-config-disk-setup.txt for documentation on the
format.
�device_aliasesc s �j | �}� j|p| �p|S )N)�getZdevice_name_to_device)Zcandr )�cloudr � �#/usr/lib/python3.6/cc_disk_setup.py�alias_to_device` s
z handle.<locals>.alias_to_device�
disk_setupzPartitioning disks: %sz Invalid disk definition for %sz!Creating new partition table/diskzCreating partition on %s)Zlogfunc�msg�func�argsz Failed partitioning operation
%sN�fs_setupzsetting up filesystems: %sz"Invalid file system definition: %szCreating new filesystem.�devicezCreating fs for %sz%Failed during filesystem operation
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isinstance�dict�update_disk_setup_devices�debug�str�items�warningr Zlog_time�LOG�mkpart� Exception�logexc�list�update_fs_setup_devices�mkfs) �_nameZcfgr �logZ_argsr r �disk�
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W d S )Nz0Replacing %s in disk_setup for translation of %s� _orignamez,updated disk_setup device entry '%s' to '%s')r% r! �infor r r )r �tformer�orignameZ transformedr r r r � s$ r c C s� x�| D ]�}t |t�s"tjd|� q|jd�}|d kr6qtj|�\}}||�}|d k rx|}tjd|||� ||d< ||d< |rd|kr�tjd|||� |d |d< ||d< qW d S )Nz"entry in disk_setup not a dict: %sr z %s is mapped to disk=%s part=%sr. � partitionzKPartition '%s' from dotted device name '%s' overrides 'partition' key in %sZ
_partition)r r r! r r r Zexpand_dotted_devnamer )r r0 r+ r1 Zdev�partZtformedr r r r& � s0
r& c c sD t j| �}|r||d� }x$dd� |D �D ]\}}||fV q*W dS )zd
Returns the key/value pairs of output sent as string
like: FOO='BAR' HOME='127.0.0.1'
Nc S s g | ]}|j d ��qS )�=)�split)�.0�xr r r �
<listcomp>� s z"value_splitter.<locals>.<listcomp>)�shlexr5 )�values�startZ_values�key�valuer r r �value_splitter� s
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Enumerate the elements of a child device.
Parameters:
device: the kernel device name
nodeps <BOOL>: don't enumerate children devices
Return a dict describing the disk:
type: the entry type, i.e disk or part
fstype: the filesystem type, if it exists
label: file system label, if it exists
name: the device name, i.e. sda
z--pairsz--outputzNAME,TYPE,FSTYPE,LABELz--nodepsNz"Failed during disk check for %s
%sc S s g | ]}t |j� �d kr|�qS )r )�lenr5 )r6 r7 r r r r8 � s z"enumerate_disk.<locals>.<listcomp>)r �type�fstype�label)� LSBLK_CMD�appendr r# �strip�
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Return the device type of the device by calling lsblk.
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Check if the device is a valid device.
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kr�| }q�|j� d kr�| }q�|j� d kr�| }q�W |||fS )z�
Check if the device has a filesystem on it
Output of blkid is generally something like:
/dev/sda: LABEL="Backup500G" UUID="..." TYPE="ext4"
Return values are device, label, type, uuid
Nz-cz /dev/nullr � )�rcsz"Failed during disk check for %s
%s� )r; rB r@ �uuid)NNNN)� BLKID_CMDr r# r? rF r> rG )
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Returns true if the device has a file system.
)rW )r �_rV r r r �
is_filesystemJ s rY Tc C s� |dkr d}|sddg}d}x�t | �D ]�}|d |krN|dkrNd|d dfS |d |kr�|rj|d |ksp| r�d|d d
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Find a device that is either matches the spec, or the first
The return is value is (<device>, <bool>) where the device is the
device to use and the bool is whether the device matches the
fs_type and label.
Note: This works with GPT partition tables!
NrN r* r3 FrA z/dev/%sr rB Tr@ z5Failed to find device during available device search.)NF)rL r! r )r rV rB Z
valid_targets� label_match�
replace_fsZraw_device_usedrK r r r �find_device_nodeR s,
r\ c C s2 t tt| ���dkrdS t| �\}}}|r.dS dS )z�
Check if the device is currently used. Returns true if the device
has either a file system or a partition entry
is no filesystem found on the disk.
rR TF)r? r% rL rW )r rX � check_fstyper r r � is_disk_used� s r^ c G s� t | �dk rtd��| d | d }| dd� }y |rDt� | |� S t� | S W n0 tk
r� } ztd| �|�W Y dd}~X nX dS )a-
Call the appropriate function.
The first value is the template for function name
The second value is the template replacement
The remain values are passed to the function
For example: get_dyn_func("foo_%s", 'bar', 1, 2, 3,)
would call "foo_bar" with args of 1, 2, 3
rP z*Unable to determine dynamic funcation namer rR Nz No such function %s to call!)r? r# �globals�KeyError)r Z func_nameZ func_argsr, r r r � get_dyn_func� s ra c C sr y,t j td| g�\}}t j td| g�\}}W n4 tk
r` } ztd| |f �|�W Y d d }~X nX t|�t|� S )Nz --getsize64z--getsszFailed to get %s size
%s)r �
BLKDEV_CMDr# �int)r Z
size_in_bytesrX Z sector_sizer, r r r � get_hdd_size� s $rd c C s t | � td| g}ytj|d| d�\}}W n4 tk
r` } ztd| |f �|�W Y dd}~X nX g }x�|j� D ]�}|j� }t|�dkr�qp| |d krp|d
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Returns true if the partition layout matches the one on the disk
Layout should be a list of values. At this time, this only
verifies that the number of partitions and their labels is correct.
z-lz%s
)�dataz(Error running partition command on %s
%sNr rR �extended�emptyT)�reverse�/���)rf rg ) � read_parttbl�
SFDISK_CMDr r# rF r5 r? rG �sorted�range�isdigitrD ) r �layout�prt_cmdrU rI r, � found_layout�line�_lineZ
type_labelr7 r r r �check_partition_mbr_layout� s.
ru c C s� t d| g}ytj|td�\}}W n4 tk
rT } ztd| |f �|�W Y d d }~X nX t|j� �}x |D ]}|j� jd�rhP qhW dd� |D �}g } x8|D ]0}
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LANG_C_ENVr# �iterrF rE �
startswithr? �endswithrD ) r rp rq rU rI r, Z out_linesrs ZcodesZcleaned�coder r r �check_partition_gpt_layout� s$
r c C s� t d| ||�}tjd| |||� t|t�rB|r>t|�dkr>dS dS t|�t|�kr�dd� |D �}tjd||� x2t||�D ]$\}}|d k rzt|�t|�krzdS qzW dS dS )
z�
See if the partition lay out matches.
This is future a future proofing function. In order
to add support for other disk layout schemes, add a
function called check_partition_%s_layout
zcheck_partition_%s_layoutz6called check_partition_%s_layout(%s, %s), returned: %srR TFc S s* g | ]"}t |ttf�r"t|d �nd�qS )rR N)r �tupler% r )r6 r7 r r r r8 1 s z*check_partition_layout.<locals>.<listcomp>z Layout types=%s. Found types=%sN)ra r! r r �boolr? �zipr )�
table_typer rp rr Z layout_typesZitypeZftyper r r �check_partition_layout s*
r� c
C s t |t� rt |t�rdS t|�dkr0t |t�s<t |t� rDtd��t|�}|dkr\td��g }d}x�|D ]�}d}|}|d7 }t |t�r�t|�dkr�td | ��|\}}tt| �t|�d
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Calculate the layout of the partition table. Partition sizes
are defined as percentage values or a tuple of percentage and
partition type.
For example:
[ 33, [66: 82] ]
Defines the first partition to be a size of 1/3 the disk,
while the remaining 2/3's will be of type Linux Swap.
z0,r zPartition layout is invalidrx z$Only simply partitioning is allowed.�S rR rP z%Partition was incorrectly defined: %s�d z,,%sz,%s,%s�
z-Calculated partition definition is too big
%s) r r% r� r? r# rc �floatrD �join)
�sizerp Z
last_part_num�part_definitionZpart_numr3 Z part_type�percent� part_sizeZsfdisk_definitionr r r �get_partition_mbr_layout> s8
r� c C s� t |t�rd ddgfgS g }xp|D ]h}t |t�rRt|�dkrHtd| ��|\}}n|}d }tt| �t|�d �}|j|ddj|�gf� q"W d|d d d < |S )
Nr rP z%Partition was incorrectly defined: %sr� z+{}rR rj rj rj ) r r� r% r? r# rc r� rD �format)r� rp Zpartition_specsr2 r� �partition_typer� r r r �get_partition_gpt_layoutu s
r� c
C sb d}d}d}t | d��:}|j|| � |j| tj� |j|| � |j� W d Q R X t| � d S )N� i zrb+i i )�open�write�seek�os�SEEK_END�flushrk )r ZnullZ start_lenZend_len�fpr r r �purge_disk_ptable� s r� c C s� x�t | �D ]v}|d d
kr
tdd|d g}y tjd|d � tj|� W q
tk
r~ } ztd|d �|�W Y d d }~X q
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W t| � d S ) z'
Remove parition table entries
r@ r* �cryptz--allz/dev/%sr z Purging filesystem on /dev/%szFailed FS purge of /dev/%sN)r* r� )rL �
WIPEFS_CMDr! r/ r r# r� )r rK Z
wipefs_cmdr, r r r �
purge_disk� s r� c C s t d| ||�S )z�
Call the appropriate function for creating the table
definition. Returns the table definition
This is a future proofing function. To add support for
other layouts, simply add a "get_partition_%s_layout"
function.
zget_partition_%s_layout)ra )r� r� rp r r r �get_partition_layout� s r� c C sr t dk rt | g}n
td| g}tj� ytj|� W n2 tk
rd } ztjtd| � W Y dd}~X nX tj� dS )zq
`Partprobe` is preferred over `blkdev` since it is more reliably
able to probe the partition table.
Nz
--rereadptz%Failed reading the partition table %s)�
PARTPROBE_CMDrb r �udevadm_settler r# r$ r! )r Z probe_cmdr, r r r rk � s
"rk c C sf t ddd| g}ytj|d| d� W n4 tk
rX } ztd| |f �|�W Y dd}~X nX t| � dS )zV
Break out of mbr partition to allow for future partition
types, i.e. gpt
z--Linuxz--unit=Sz--forcez%s
)re z Failed to partition device %s
%sN)rl r r# rk )r rp rq r, r r r �exec_mkpart_mbr� s r� c C s� y�t j td| g� xrt|�D ]f\}\}\}}|d7 }t j tddj|||�| g� |d k r t|�jdd�}t j tddj||�| g� q W W n" tk
r� tjd | � � Y nX t | � d S )
Nz-ZrR z-nz{}:{}:{}rx �0z-tz{}:{}z Failed to partition device %s)
r ry � enumerater� r �ljustr# r! r rk )r rp �indexr� r; �endZpinputr r r �exec_mkpart_gpt� s" r� c C s t d| ||�S )a
Fetches the function for creating the table type.
This allows to dynamically find which function to call.
Paramaters:
table_type: type of partition table to use
device: the device to work on
layout: layout definition specific to partition table
zexec_mkpart_%s)ra )r� r rp r r r � exec_mkpart� s
r� c C s8 t jj| �s,tj� t jj| �s,td| ��tj� dS )z?Assert that device exists and settle so it is fully recognized.zBDevice %s did not exist and was not created with a udevadm settle.N)r� �path�existsr r� � RuntimeError)r r r r �assert_and_settle_device s r� c C sz t | � tjj| �} tjd| � |jdd�}|jdd�}|jdd�}tjd� t|t�r^| sd| rrtjd� d S tjd
| � t | �s�t
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kr�tjd� t| � d S tjd� t|| |�r�tjd� dS tjd� | �r t| ��s t| ��r tjd| � d S tjd| � t| �}tjd� t|||�}tjd|� tjd| � t|| |� tjd| � d S )a�
Creates the partition table.
Parameters:
definition: dictionary describing how to create the partition.
The following are supported values in the dict:
overwrite: Should the partition table be created regardless
of any pre-exisiting data?
layout: the layout of the partition table
table_type: Which partition table to use, defaults to MBR
device: the device to work on.
z!Checking values for %s definition� overwriteFrp r� Zmbrz Checking against default devicesz)Device is not to be partitioned, skippingNz'Checking if device %s is a valid devicez%Device {device} is not a disk device!)r �removez,Instructed to remove partition table entriesz!Checking if device layout matchesz"Device partitioning layout matchesTz'Checking if device is safe to partitionz-Skipping partitioning on configured device %sz Checking for device size of %sz Calculating partition layoutz Layout is: %sz Creating partition table on %sz Partition table created for %s)r� r� r� �realpathr! r r r r� rO r# r� r rG r� r� r^ rY rd r� r� )r r+ r� rp r� Z device_sizer� r r r r" sD
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z-Fz-f)�extZbtrfsZxfsZreiserfsZswapr� z Force flag for %s is unknown.rN )rG r! r )Zfs�flagsr r r �lookup_force_flagY s r� c C s� | j d�}| j d�}t| j dd��}| j d�}| j dg �}| j dg �}| j dd �}| j d
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||� tjd|� t |�\} }
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|d�\}}tjd| |� |�r�tjd� dS | �r�|�r�|�r�tjd|� |�stjd | � dS n6| �s�t|�j � d k�r tjd |� ntjd � dS tjd |||� |�s4tj
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Create a file system on the device.
label: defines the label to use on the device
fs_cfg: defines how the filesystem is to look
The following values are required generally:
device: which device or cloud defined default_device
filesystem: which file system type
overwrite: indiscriminately create the file system
partition: when device does not define a partition,
setting this to a number will mean
device + partition. When set to 'auto', the
first free device or the first device which
matches both label and type will be used.
'any' means the first filesystem that matches
on the device.
When 'cmd' is provided then no other parameter is required.
rB r r2 �any�
filesystem�cmdZ
extra_optsr[ Fr� z#Checking %s against default devicesz%s%sz%Manual request of partition %s for %szChecking device %sz0Device '%s' has check_label='%s' check_fstype=%sz Existing file system found at %sz"Device %s has required file systemNzDestroying filesystem on %sz"Device %s is cleared for formating�autoz,Identifying device to create %s filesytem onT)rV rB rZ r[ z(Automatic device for %s identified as %sz+Found filesystem match, skipping formating.z*Replacing file system on %s as instructed.zENo device available that matches request. Skipping fs creation for %sZnonez.Using the raw device to place filesystem %s onz(Error in device identification handling.z;File system type '%s' with label '%s' will be created on %szDevice is not known: %szENo way to create filesystem '{label}'. fs_type or fs_cmd must be set.)rB )rB r� r z8fs_setup:overwrite ignored because cmd was specified: %sz9fs_setup:extra_opts ignored because cmd was specified: %szmkfs.%szmk%sz.Cannot create fstype '%s'. No mkfs.%s commandz-Lr* z Creating file system %s on %sz Using cmd: %s)�shellzFailed to exec of '%s':
%s)r� r� )r r r� r� r� r� r! r ro rW r rG r\ r# r� r �which�extendrM r� rD )Zfs_cfgrB r r2 rV Zfs_cmdZfs_optsZ
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