On Thu, 2 Dec 2010 15:58:51 +0000 mark delfman <markdelfman@xxxxxxxxxxxxxx> wrote: > Hi > > Is there any way to use an MD RAID in write through mode? I > appreciate that there is a performance impact but this is important > from a security prospective.... MD RAID does work in write-through mode. I have occasionally thought about adding a write-back mode which would make sense now that we have a sensible flushing infrastructure in Linux. But I haven't implemented it. > > The likelihood is that I would use RAID0 (I know this sounds like a > contradiction to the above, but the ‘drives’ are probably hardware > RAIDs). But may use standard RAID6. RAID0 doesn't do any caching at all. > > I cannot see any way to disable write cache in MD, but I am hopefully > I am simply missing something obvious. Why do you think these is a write-behind cache in MD ?? NeilBrown > > I appreciate any feedback.... > > Thanks, Mark > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
