On Thu, Aug 27, 2009 at 12:54:05PM -0400, Jeff Garzik wrote:
That code is from the new request-based multipath implementation in 2.6.31
which doesn't yet.
But bio-based dm does support barriers now. (Just missing some patches to
complete the dm-raid1 support that are still under review IIRC.)
Alasdair
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