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authorBenoƮt Canet <benoit@irqsave.net>2014-02-21 22:21:10 +0100
committerKevin Wolf <kwolf@redhat.com>2014-02-21 22:29:48 +0100
commit27cec15e4ed4e69155f2499ceb46d22d8425102a (patch)
treebba453fd9e8c77779298c21ec2480cd919ec1f1b /disas/arm-a64.cc
parent64757582dafca9b0b3846677e368dd40bcd68b43 (diff)
quorum: Create quorum.c, add QuorumChildRequest and QuorumAIOCB.
Quorum is a block filter mirroring writes to num_children children. For reads quorum reads each children and does a vote. If more than vote_threshold versions are identical the quorum is reached and this winning version is returned to the guest. So quorum prevents bit corruption. For high availability purpose minority errors are reported via QMP but the guest does not see them. This patch creates the driver C source file and introduces the structures that will be used in asynchronous reads and writes. Signed-off-by: Benoit Canet <benoit@irqsave.net> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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