Current File : //lib/python2.7/site-packages/salt/modules/sysfs.pyc
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Module for interfacing with SysFS
.. seealso:: https://www.kernel.org/doc/Documentation/filesystems/sysfs.txt
.. versionadded:: 2016.3.0
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Only work on Linux
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Access/write a SysFS attribute.
If the attribute is a symlink, it's destination is returned
:return: value or bool
CLI example:
.. code-block:: bash
salt '*' sysfs.attr block/sda/queue/logical_block_size
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Write a SysFS attribute/action
CLI example:
.. code-block:: bash
salt '*' sysfs.write devices/system/cpu/cpu0/cpufreq/scaling_governor 'performance'
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Read from SysFS
:param key: file or path in SysFS; if key is a list then root will be prefixed on each key
:return: the full (tree of) SysFS attributes under key
CLI example:
.. code-block:: bash
salt '*' sysfs.read class/net/em1/statistics
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Return the basename of a SysFS key path
:param key: the location to resolve within SysFS
:param full: full path instead of basename
:return: fullpath or basename of path
CLI example:
.. code-block:: bash
salt '*' sysfs.read class/ttyS0
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Generate a dictionary with all available interfaces relative to root.
Symlinks are not followed.
CLI example:
.. code-block:: bash
salt '*' sysfs.interfaces block/bcache0/bcache
Output example:
.. code-block:: json
{
"r": [
"state",
"partial_stripes_expensive",
"writeback_rate_debug",
"stripe_size",
"dirty_data",
"stats_total/cache_hits",
"stats_total/cache_bypass_misses",
"stats_total/bypassed",
"stats_total/cache_readaheads",
"stats_total/cache_hit_ratio",
"stats_total/cache_miss_collisions",
"stats_total/cache_misses",
"stats_total/cache_bypass_hits",
],
"rw": [
"writeback_rate",
"writeback_rate_update_seconds",
"cache_mode",
"writeback_delay",
"label",
"writeback_running",
"writeback_metadata",
"running",
"writeback_rate_p_term_inverse",
"sequential_cutoff",
"writeback_percent",
"writeback_rate_d_term",
"readahead"
],
"w": [
"stop",
"clear_stats",
"attach",
"detach"
]
}
.. note::
* 'r' interfaces are read-only
* 'w' interfaces are write-only (e.g. actions)
* 'rw' are interfaces that can both be read or written
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