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| author | Shaohua Li <shli@fb.com> | 2017-01-30 15:47:49 -0800 |
|---|---|---|
| committer | Shaohua Li <shli@fb.com> | 2017-02-13 09:17:54 -0800 |
| commit | 5a6265f9cd98b82d89778b806bc50b3d368c8273 (patch) | |
| tree | 6a859821d584db8a2ec5edbd90badaa896302304 /Documentation/admin-guide | |
| parent | 1601c5907c508637f7816a427ff23b14e54eb11d (diff) | |
| download | op-kernel-dev-5a6265f9cd98b82d89778b806bc50b3d368c8273.zip op-kernel-dev-5a6265f9cd98b82d89778b806bc50b3d368c8273.tar.gz | |
MD: add doc for raid5-cache
I'm starting document of the raid5-cache feature. Please note this is a
kernel doc instead of a mdadm manual, so I don't add the details about
how to use the feature in mdadm side.
Cc: NeilBrown <neilb@suse.com>
Reviewed-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/md.rst | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/admin-guide/md.rst b/Documentation/admin-guide/md.rst index e449fb5..1e61bf5 100644 --- a/Documentation/admin-guide/md.rst +++ b/Documentation/admin-guide/md.rst @@ -725,3 +725,8 @@ These currently include: to 1. Setting this to 0 disables bypass accounting and requires preread stripes to wait until all full-width stripe- writes are complete. Valid values are 0 to stripe_cache_size. + + journal_mode (currently raid5 only) + The cache mode for raid5. raid5 could include an extra disk for + caching. The mode can be "write-throuth" and "write-back". The + default is "write-through". |
