On Wednesday March 21, [EMAIL PROTECTED] wrote: > > My question is based upon prior experience working for Stratus Computer. At > Stratus it was impractical to go beat the disk drives with a hammer to cause > them to fail - rather we would simply use a utility to cause the disk driver > to begin to get "errors" from the drives. This would then exercise the > recovery mechanism - taking a drive off line and bringing another up to > take its place. This facility is also present in Veritas Volume Manager test > suites to exercise the code. raidsetfaulty should do what you want. It is part of the latest raidtools-0.90. If you don't have it, get the source from www.kernel.org/pub/linux/daemons/... (it might be devel rather than daemons, I'm not sure). NeilBrown - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to [EMAIL PROTECTED]