From 5a6265f9cd98b82d89778b806bc50b3d368c8273 Mon Sep 17 00:00:00 2001 From: Shaohua Li Date: Mon, 30 Jan 2017 15:47:49 -0800 Subject: 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 Reviewed-by: Song Liu Signed-off-by: Shaohua Li --- Documentation/admin-guide/md.rst | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'Documentation/admin-guide') diff --git a/Documentation/admin-guide/md.rst b/Documentation/admin-guide/md.rst index e449fb5f277c..1e61bf50595c 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". -- cgit