I have two four disk raid5 arrays on Ubuntu Linux 8.04 (AMD64). Both are using XFS for the filesystem. $ uname -a Linux septictank 2.6.24-19-generic #1 SMP Wed Aug 20 17:53:40 UTC 2008 x86_64 GNU/Linux I recently replaced the motherboard and processor: switched from an Intel Q35 motherboard + E5200 CPU to a Gigabyte GA-MA74GM-S2 motherboard (AMD 740G/SB700) with an 4850e CPU. I ran a ton of benchmarks under the old configuration, and intend to do the same with the new hardware. (See my previous posts regarding SATA/southbridge performance.) Anyway, four times now, when I run bonnie++ (with my current working directory on one of the md arrays), the computer immediately reboots. I saw this happen twice while I logged in remotely; I did it again from the console to see if there are any useful error messages. It flashed too quickly, but the reboot looked like it happened immediately after bonnie++ started "Writing intelligently...". There are no useful indications in the system logs. Every time this reboot happens, it forces a rebuild of the md array. I have only tried it on the one array (which is empty, so I can afford to have the rebuild fail). I'm afraid to try it on the other one until I figure this out. For what it's worth the md device in question is four Western Digital 7500AAKS 750 GB 7200 rpm SATA drives. The controller is not the onboard SATA, but actually two 2-port PCIe SATA cards. Anyone seen anything like this or have any ideas where I can start looking for more information? Thanks! Matt -- 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
