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| author | NeilBrown <neilb@suse.de> | 2009-03-09 11:16:53 +1100 |
|---|---|---|
| committer | NeilBrown <neilb@suse.de> | 2009-03-09 11:16:53 +1100 |
| commit | b640a252ee4d0c7be9ab31d9300aec00571b6238 (patch) | |
| tree | 12ca36b06babede8272f5e4eeab26e74e974e0dc /ReadMe.c | |
| parent | e8e1c176d86433b6d5ebab246257e6f506402fa4 (diff) | |
| download | mdadm-b640a252ee4d0c7be9ab31d9300aec00571b6238.tar.gz mdadm-b640a252ee4d0c7be9ab31d9300aec00571b6238.tar.xz mdadm-b640a252ee4d0c7be9ab31d9300aec00571b6238.zip | |
Support new raid6 layouts needed for DDF
DDF raid6 layouts are subtly different from the standard 'md' layouts.
From 2.6.30 the kernel knows about these.
Teach mdadm about them, and also allow 'ddf' to set an appropriate default.
Signed-off-by: NeilBrown <neilb@suse.de>
Diffstat (limited to 'ReadMe.c')
| -rw-r--r-- | ReadMe.c | 53 |
1 files changed, 43 insertions, 10 deletions
@@ -584,16 +584,49 @@ char Help_config[] = /* name/number mappings */ mapping_t r5layout[] = { - { "left-asymmetric", 0}, - { "right-asymmetric", 1}, - { "left-symmetric", 2}, - { "right-symmetric", 3}, - - { "default", 2}, - { "la", 0}, - { "ra", 1}, - { "ls", 2}, - { "rs", 3}, + { "left-asymmetric", ALGORITHM_LEFT_ASYMMETRIC}, + { "right-asymmetric", ALGORITHM_RIGHT_ASYMMETRIC}, + { "left-symmetric", ALGORITHM_LEFT_SYMMETRIC}, + { "right-symmetric", ALGORITHM_RIGHT_SYMMETRIC}, + + { "default", ALGORITHM_LEFT_SYMMETRIC}, + { "la", ALGORITHM_LEFT_ASYMMETRIC}, + { "ra", ALGORITHM_RIGHT_ASYMMETRIC}, + { "ls", ALGORITHM_LEFT_SYMMETRIC}, + { "rs", ALGORITHM_RIGHT_SYMMETRIC}, + + { "parity-first", ALGORITHM_PARITY_0}, + { "parity-last", ALGORITHM_PARITY_N}, + { "ddf-zero-restart", ALGORITHM_RIGHT_ASYMMETRIC}, + { "ddf-N-restart", ALGORITHM_LEFT_ASYMMETRIC}, + { "ddf-N-continue", ALGORITHM_LEFT_SYMMETRIC}, + + { NULL, 0} +}; +mapping_t r6layout[] = { + { "left-asymmetric", ALGORITHM_LEFT_ASYMMETRIC}, + { "right-asymmetric", ALGORITHM_RIGHT_ASYMMETRIC}, + { "left-symmetric", ALGORITHM_LEFT_SYMMETRIC}, + { "right-symmetric", ALGORITHM_RIGHT_SYMMETRIC}, + + { "default", ALGORITHM_LEFT_SYMMETRIC}, + { "la", ALGORITHM_LEFT_ASYMMETRIC}, + { "ra", ALGORITHM_RIGHT_ASYMMETRIC}, + { "ls", ALGORITHM_LEFT_SYMMETRIC}, + { "rs", ALGORITHM_RIGHT_SYMMETRIC}, + + { "parity-first", ALGORITHM_PARITY_0}, + { "parity-last", ALGORITHM_PARITY_N}, + { "ddf-zero-restart", ALGORITHM_ROTATING_ZERO_RESTART}, + { "ddf-N-restart", ALGORITHM_ROTATING_N_RESTART}, + { "ddf-N-continue", ALGORITHM_ROTATING_N_CONTINUE}, + + { "left-asymmetric-6", ALGORITHM_LEFT_ASYMMETRIC_6}, + { "right-asymmetric-6", ALGORITHM_RIGHT_ASYMMETRIC_6}, + { "left-symmetric-6", ALGORITHM_LEFT_SYMMETRIC_6}, + { "right-symmetric-6", ALGORITHM_RIGHT_SYMMETRIC_6}, + { "parity-first-6", ALGORITHM_PARITY_0_6}, + { NULL, 0} }; |