Now it works, but I dont trust it one bit. I had been seeing almost immediate, perfectly repeatable hard lockups in 2.6.15-rc5 and 2.6.15-rc5-mm3, when using sata_mv, RAID, and LVM together. Nothing in the syslog or on the console, and the system is totally unresponsive to the keyboard & network. My hardware setup is: four Seagate Barracuda 500 GB disks, on a Marvell MV88SX6081 8-port SATA-II PCI-X controller, on a PCI-X bus (64/66). The disks work great when accessed directly. They work great when used as four PVs for LVM, and when assembled into a 4-disk RAID-6. But when I make a RAID-6 array out of them, and use the array as a PV, the system would hang completely, within seconds. (This is with LVM 2.02.01, libdevicemapper 1.02.02, and dm-driver 4.5.0.) I turned on all the debugging options in the kernel config hoping to get some insight, but this "debug" kernel doesnt crash. It's running fine, and I'm pounding on it. A timing problem in the interaction between LVM and RAID? Some kind of wierd heisenbug.... I'd be happy to do any debugging tests people suggest. -- Sebastian Kuzminsky - 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
