https://bugzilla.kernel.org/show_bug.cgi?id=111381 --- Comment #4 from Gabriel A. Devenyi <gdevenyi@xxxxxxxxx> --- After much more research and reading, I believe I've found the root issue causing the communication timeouts to the disks. I have not changed any cables (other than reseating everything). I came across several reports of marvell (mvsas) controllers randomly causing issues with load, which mentioned SMART. http://www.spinics.net/lists/linux-ide/msg50075.html https://bugzilla.kernel.org/show_bug.cgi?id=42679 So I decided to stop smartd and try my load tests. I have now gone through three iterations of high-load zfs scrubs along with iotest.sh hammering the array simultaneously with no timeouts or communications issues. I believe this indicates some issue with the driver/controller/disks handling smart commands during load. Do you have any recommendations as how I can test this further? Is there any debug info I can provide? -- You are receiving this mail because: You are watching the assignee of the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
