Attempting to build a new raid5 md array across 4 hard drives. At the exact moment that the drive finishes rebuilding, the superblock checksum changes to an invalid value. During the rebuild, mdadm -E for the 4 drives shows: Checksum : 70c0863a - correct Checksum : 70c0864c - correct Checksum : 70c0865e - correct Checksum : 70c08670 - correct The instant it finishes: Checksum : 70c0bc47 - expected 70c0bc27 Checksum : 70c0bc59 - expected 70c0bc39 Checksum : 70c0bc6b - expected 70c0bc4b Checksum : 70c0bc7d - expected 70c0bc5d Kernel is 2.6.17.11. Controller is 4-port silicon image: 0000:00:08.0 RAID bus controller: Silicon Image, Inc. SiI 3114 [SATALink/SATARaid] Serial ATA Controller (rev 02) Drives are seagate 250G sata ST3250824AS -- Josh Litherland (josh@xxxxxxxxxxx) -- VGER BF report: U 0.669701 - 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