John, thank you for all your sugestions.I've already done memtest run through many hours,My original hunch was that you have a hardware problem of some kind. You mentioned that you had a "crash" of some kind related to hardware before and this further reinforces my feeling that its a hardware failure.
Your recent tests with dd seem to confirm this. Now its a process of elimination. The easiest thing to try first is a memory test so put memtest on a bootable CD and try that. I don't think its a RAM problem because the times I've had bad RAM it causes a kernel panic, not a hard-lock.
If your RAM checks out I'd remove the RAID card and try the drives without the card. I don't suspect the drives themselves because you said it locked up on all drives.
If you still get hard locks during any of these tests then it could be the Motherboard or the CPU. Could the CPU overheating? The one other thing that comes to mind is perhaps your power supply is not strong enough to power everything? And finally, its a long shot but it could be a bad network or video card. Just keep swapping things until the problem goes away.
and a new test today that seems to be the end of my posts here. :)
I've tested the same process against a partition "released" from that linear array and the machine
still freezes.I can't say if it was a BUG(), a oops, or anything like that because i can't go to the
data center check today.I'll look into the patch described by Chrystoph, because it's a random
and strange hardware failure (maybe the controller) or a libata bug and not only a xfs bug (read
my previous post).I'll try get this machine back to the lab to do all the tests necessary and report
to lkml if it isn't a hardware failure.
Thank you, Gustavo Franco - 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
