1afe51d22d
Replace **bold** or ``quoted`` with :command:`line ...` that is supposed to be used verbatim. Signed-off-by: David Sterba <dsterba@suse.com>
28 lines
1.3 KiB
ReStructuredText
28 lines
1.3 KiB
ReStructuredText
Inline files
|
|
============
|
|
|
|
Files up to some size can be stored in the metadata section ("inline" in the
|
|
b-tree nodes), i.e. no separate blocks for the extents. The default limit is
|
|
2048 bytes and can be configured by mount option ``max_inline``. The data of
|
|
inlined files can be also compressed as long as they fit into the b-tree nodes.
|
|
|
|
If the filesystem has been created with different data and metadata profiles,
|
|
namely with different level of integrity, this also affects the inlined files.
|
|
It can be completely disabled by mounting with ``max_inline=0``. The upper
|
|
limit is either the size of b-tree node or the page size of the host.
|
|
|
|
An inline file can be identified by enumerating the extents, e.g. by the tool
|
|
:command:`filefrag`:
|
|
|
|
.. code-block:: bash
|
|
|
|
$ filefrag -v inlinefile
|
|
Filesystem type is: 9123683e
|
|
File size of inlinefile is 463 (1 block of 4096 bytes)
|
|
ext: logical_offset: physical_offset: length: expected: flags:
|
|
0: 0.. 4095: 0.. 4095: 4096: last,not_aligned,inline,eof
|
|
|
|
In the above example, the file is not compressed, otherwise it would have the
|
|
*encoded* flag. The inline files have no limitations and behave like regular
|
|
files with respect to copying, renaming, reflink, truncate etc.
|