From b578481ca382959da894ebdd91c5e5f45d50374d Mon Sep 17 00:00:00 2001 From: Neil Brown Date: Mon, 15 May 2006 02:46:54 +0000 Subject: Support new offset layout for raid10 Requires 2.6.18. Signed-off-by: Neil Brown --- mdadm.8 | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) (limited to 'mdadm.8') diff --git a/mdadm.8 b/mdadm.8 index e3052dc..4ec2f76 100644 --- a/mdadm.8 +++ b/mdadm.8 @@ -398,12 +398,20 @@ and "flush" will clear any persistent faults. To set the parity with "--grow", the level of the array ("faulty") must be specified before the fault mode is specified. -Finally, the layout options for RAID10 are either 'n' or 'p' followed +Finally, the layout options for RAID10 are one of 'n', 'o' or 'p' followed by a small number. The default is 'n2'. .I n -signals 'near' copies (multiple copies of one data block are at -similar offsets in different devices) while +signals 'near' copies. Multiple copies of one data block are at +similar offsets in different devices. + +.I o +signals 'offset' copies. Rather than the chunks being duplicated +within a stripe, whole stripes are duplicated but are rotated by one +device so duplicate blocks are on different devices. Thus subsequent +copies of a block are in the next drive, and are one chunk further +down. + .I f signals 'far' copies (multiple copies have very different offsets). See md(4) for more -- cgit