Hi, I've been looking for an answer to this question and can't find anything concrete that says full support for write barriers has been backported to the stock kernel. I've read that: "There is incomplete write barrier support in kernel versions 2.6.32 and earlier (2.6.31 has some support, while 2.6.33 works for all types of device target) - RHEL 6 uses 2.6.32." Now, I understand that Red Hat (and therefore CentOS) backport many upstream features into the stock kernel so how can I be sure that kernel 2.6.32-431.11.2.el6 has write barrier support? Any clues, anyone? Kind regards, Tom -- Tom Robinson IT Manager/System Administrator MoTeC Pty Ltd 121 Merrindale Drive Croydon South 3136 Victoria Australia T: +61 3 9761 5050 F: +61 3 9761 5051 E: tom.robinson@xxxxxxxxxxxx
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