projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 335debee | 1 | config BTRFS_FS |
| aa825914 | 2 | tristate "Btrfs filesystem support" |
| 335debee AD |
3 | select LIBCRC32C |
| 4 | select ZLIB_INFLATE | |
| 5 | select ZLIB_DEFLATE | |
| a6fa6fae LZ |
6 | select LZO_COMPRESS |
| 7 | select LZO_DECOMPRESS | |
| 53b381b3 | 8 | select RAID6_PQ |
| 10e78e3a | 9 | select XOR_BLOCKS |
| 53b381b3 | 10 | |
| 335debee AD |
11 | help |
| 12 | Btrfs is a new filesystem with extents, writable snapshotting, | |
| 13 | support for multiple devices and many more features. | |
| 14 | ||
| 15 | Btrfs is highly experimental, and THE DISK FORMAT IS NOT YET | |
| 16 | FINALIZED. You should say N here unless you are interested in | |
| 17 | testing Btrfs with non-critical data. | |
| 18 | ||
| 19 | To compile this file system support as a module, choose M here. The | |
| 20 | module will be called btrfs. | |
| 21 | ||
| 22 | If unsure, say N. | |
| bef62ef3 CH |
23 | |
| 24 | config BTRFS_FS_POSIX_ACL | |
| 25 | bool "Btrfs POSIX Access Control Lists" | |
| 26 | depends on BTRFS_FS | |
| 27 | select FS_POSIX_ACL | |
| 28 | help | |
| 29 | POSIX Access Control Lists (ACLs) support permissions for users and | |
| 30 | groups beyond the owner/group/world scheme. | |
| 31 | ||
| 32 | To learn more about Access Control Lists, visit the POSIX ACLs for | |
| 33 | Linux website <http://acl.bestbits.at/>. | |
| 34 | ||
| 35 | If you don't know what Access Control Lists are, say N | |
| c975dd46 SB |
36 | |
| 37 | config BTRFS_FS_CHECK_INTEGRITY | |
| 38 | bool "Btrfs with integrity check tool compiled in (DANGEROUS)" | |
| 39 | depends on BTRFS_FS | |
| 40 | help | |
| 41 | Adds code that examines all block write requests (including | |
| 42 | writes of the super block). The goal is to verify that the | |
| 43 | state of the filesystem on disk is always consistent, i.e., | |
| 44 | after a power-loss or kernel panic event the filesystem is | |
| 45 | in a consistent state. | |
| 46 | ||
| 47 | If the integrity check tool is included and activated in | |
| 48 | the mount options, plenty of kernel memory is used, and | |
| 49 | plenty of additional CPU cycles are spent. Enabling this | |
| 50 | functionality is not intended for normal use. | |
| 51 | ||
| 52 | In most cases, unless you are a btrfs developer who needs | |
| 53 | to verify the integrity of (super)-block write requests | |
| 54 | during the run of a regression test, say N | |
| 74255aa0 JB |
55 | |
| 56 | config BTRFS_FS_RUN_SANITY_TESTS | |
| 57 | bool "Btrfs will run sanity tests upon loading" | |
| 58 | depends on BTRFS_FS | |
| 59 | help | |
| 60 | This will run some basic sanity tests on the free space cache | |
| 61 | code to make sure it is acting as it should. These are mostly | |
| 62 | regression tests and are only really interesting to btrfs devlopers. | |
| 63 | ||
| 64 | If unsure, say N. | |
| 65 | ||
| 6d49ba1b ES |
66 | config BTRFS_DEBUG |
| 67 | bool "Btrfs debugging support" | |
| 68 | depends on BTRFS_FS | |
| 69 | help | |
| 70 | Enable run-time debugging support for the btrfs filesystem. This may | |
| 71 | enable additional and expensive checks with negative impact on | |
| 72 | performance, or export extra information via sysfs. | |
| 73 | ||
| 74 | If unsure, say N. |