Commit | Line | Data |
---|---|---|
335debee | 1 | config BTRFS_FS |
aa825914 | 2 | tristate "Btrfs filesystem support" |
14a958e6 FDBM |
3 | select CRYPTO |
4 | select CRYPTO_CRC32C | |
335debee AD |
5 | select ZLIB_INFLATE |
6 | select ZLIB_DEFLATE | |
a6fa6fae LZ |
7 | select LZO_COMPRESS |
8 | select LZO_DECOMPRESS | |
53b381b3 | 9 | select RAID6_PQ |
10e78e3a | 10 | select XOR_BLOCKS |
53b381b3 | 11 | |
335debee | 12 | help |
4204617d DS |
13 | Btrfs is a general purpose copy-on-write filesystem with extents, |
14 | writable snapshotting, support for multiple devices and many more | |
15 | features focused on fault tolerance, repair and easy administration. | |
335debee | 16 | |
4204617d DS |
17 | The filesystem disk format is no longer unstable, and it's not |
18 | expected to change unless there are strong reasons to do so. If there | |
19 | is a format change, file systems with a unchanged format will | |
20 | continue to be mountable and usable by newer kernels. | |
21 | ||
22 | For more information, please see the web pages at | |
23 | http://btrfs.wiki.kernel.org. | |
335debee AD |
24 | |
25 | To compile this file system support as a module, choose M here. The | |
26 | module will be called btrfs. | |
27 | ||
28 | If unsure, say N. | |
bef62ef3 CH |
29 | |
30 | config BTRFS_FS_POSIX_ACL | |
31 | bool "Btrfs POSIX Access Control Lists" | |
32 | depends on BTRFS_FS | |
33 | select FS_POSIX_ACL | |
34 | help | |
35 | POSIX Access Control Lists (ACLs) support permissions for users and | |
36 | groups beyond the owner/group/world scheme. | |
37 | ||
38 | To learn more about Access Control Lists, visit the POSIX ACLs for | |
39 | Linux website <http://acl.bestbits.at/>. | |
40 | ||
41 | If you don't know what Access Control Lists are, say N | |
c975dd46 SB |
42 | |
43 | config BTRFS_FS_CHECK_INTEGRITY | |
44 | bool "Btrfs with integrity check tool compiled in (DANGEROUS)" | |
45 | depends on BTRFS_FS | |
46 | help | |
47 | Adds code that examines all block write requests (including | |
48 | writes of the super block). The goal is to verify that the | |
49 | state of the filesystem on disk is always consistent, i.e., | |
50 | after a power-loss or kernel panic event the filesystem is | |
51 | in a consistent state. | |
52 | ||
53 | If the integrity check tool is included and activated in | |
54 | the mount options, plenty of kernel memory is used, and | |
55 | plenty of additional CPU cycles are spent. Enabling this | |
56 | functionality is not intended for normal use. | |
57 | ||
58 | In most cases, unless you are a btrfs developer who needs | |
59 | to verify the integrity of (super)-block write requests | |
60 | during the run of a regression test, say N | |
74255aa0 JB |
61 | |
62 | config BTRFS_FS_RUN_SANITY_TESTS | |
63 | bool "Btrfs will run sanity tests upon loading" | |
64 | depends on BTRFS_FS | |
65 | help | |
66 | This will run some basic sanity tests on the free space cache | |
67 | code to make sure it is acting as it should. These are mostly | |
a26a8746 MW |
68 | regression tests and are only really interesting to btrfs |
69 | developers. | |
74255aa0 JB |
70 | |
71 | If unsure, say N. | |
72 | ||
6d49ba1b ES |
73 | config BTRFS_DEBUG |
74 | bool "Btrfs debugging support" | |
75 | depends on BTRFS_FS | |
76 | help | |
77 | Enable run-time debugging support for the btrfs filesystem. This may | |
78 | enable additional and expensive checks with negative impact on | |
79 | performance, or export extra information via sysfs. | |
80 | ||
81 | If unsure, say N. | |
2e17c7c6 JB |
82 | |
83 | config BTRFS_ASSERT | |
84 | bool "Btrfs assert support" | |
85 | depends on BTRFS_FS | |
86 | help | |
87 | Enable run-time assertion checking. This will result in panics if | |
88 | any of the assertions trip. This is meant for btrfs developers only. | |
89 | ||
90 | If unsure, say N. |