Chris Eddington wrote: > Key questions: > - I assume ddrescue will do a much better job of correcting errors when > imaging a disk? My colleague used ghost which is just a copy tool. I > don't understand the capabilities of ddrescue on raid partitions that well. ddrescue should do a *much* better job. It knows nothing about raid and operates on the underlying device. It retries bad sectors in a clever manner. > - fdisk -l reports that all the drives are exactly the same size with > exactly the same # sectors shown below. I don't quite follow the > hpa_resize issue, but it appears the drives don't have hidden HPA > sectors - I guess? Note that sdc is the original drive, where sda, sdb, > and sdd are the imaged drives. > > So what do you recommend to do first? Should I try xfs_repair on the > ghost copy, No or just re-copy myself using ddrescue? Yes. Are there special > settings to ddrescue I should consider to verify/correct potential HPA > changes? Ideally just ddrescue the entire device to a file and use loopback. For the faulty disk then if you have space, make a second copy and xfs_repair using that. If it fails then you can easily re-image the good disks but it may not be so easy to re-image the bad one. David - 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
