On 2013/01/19 08:06 PM, Gene Czarcinski wrote:
Signed-off-by: Josef Bacik <jba...@fusionio.com>
Signed-off-by: Gene Czarcinski <g...@czarc.net>
---
-values are raid0, raid1, raid10 or single.
+values are raid0, raid1, raid10, single or dup. Single device will have dup
+set by default except in the case of SSDs which will default to single. This
is
+because SSDs can remap blocks internally so duplicate blocks could end up in
the
+same erase block which negates the benefits of doing metadata duplication.
Can't help but suggest that a "NO_DEDUP" command could be added to the
SATA Transport Protocol/SCSI Command set. Not sure where to submit that
idea ... :-/
--
Brendan Hide
http://swiftspirit.co.za/
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