>>>>> "Eli" == Eli Morris <ermorris@xxxxxxxx> writes: Eli> Wow. Thanks so much. I haven't verified the entire array, but it Eli> looks fine. I'm still really wondering what you think might have Eli> happened. As I mentioned, everything was OK and then the four Eli> drives just showed up as "removed" when I went to write to the Eli> filesystem on the array. Do you think it has to do with the Eli> hardware or is there something I can correct in software so that Eli> this won't happen again? I suspect hardware, since after it Eli> happened, I ran lsscsi and the four drives failed to show up on Eli> the list. I personally suspect that you have hardware issues, possibly cables, possibly the enclosure you're using. When you have four drives all on a single path drop out, it points strongly to the path or some other common issue. Have you checked your power supply as well? Maybe you're running just slightly overloaded and something happened to work the system, so the voltage dropped just enough to cause the problem. If you feel ok, you could try to run the RAID check while at the same time stressing the system with something CPU intensive to load down the CPU(s) on the system. But in general, when things are stable again, bring down the system, and double check all your cables are seated properly, controllers are tight, etc. Eli> These are the Caviar Green drives that people seem to have Eli> problems with in RAID arrays. I was thinking about changing the Eli> timeout tolerance in the OS to something several minutes Eli> long. Maybe you've seen something like this before? I'm just not Eli> sure what happened, but, as you might imagine, I'm keen for it to Eli> not happen every few months. I don't remember if you posted and logs from dmesg when this crapped out, but you might see something in there. John -- 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
