Hi, I have just set up a Raid 5 disk array using 4 SATA disks on Fedora 4. To test the setup I unplugged the SATA cable from one of the disk drives. I was expecting the system to carry on with messages from the Raid system indicating that there was a disk drive down. However the Raid 5 partition became completely inaccessable after un-plugging the drive. The kernel reported disk errors but there was no error messages from the Raid system and "mdadm -Q --detail /dev/md2" reported that there was no problems with the Raid array. When I rebooted the system (needed a reset) the Raid system reported that one disk was down and the partition became readable again. It appears that the default configuration of the Raid 5 system does not handle a complete drive failier during up-time. I presume it may respond to disk errors from a disk drive that is connected but once disconnected the Raid system appears to ignore errors. Is there a configuration option to allow the Raid system to respond to a completely broken drive or cable ? Terry - 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
