Hi, I have a rather large RAID6 array where multiple disks have developed read errors. The problem is that the RAID6 is built from LVM-mapped disks, which (I think) isolated the MD driver from write errors. Thus it thought that a re-write of the bad sectors succeeded. WRONG. Thus the bad disks were never unmapped. The problem is that yesterday, three of these TByte disks failed in _exactly_ the same 1k-sized spot. So, no more RAID6. :-( So, how do I get the data back? I've copied the individual partitions with ddrescue, which conveniently left me a log file pointing to the sectors which need to be recovered. However, I'm sure that there's no way to tell the kernel about individual "bad spots". Is there a standalone program that can do that? -- Matthias Urlichs -- 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
