|
I have a failed disk in a failed raid-5 array that I am trying to resurrect with ddrescue. The disk is 1.5TB, and I successfully did a first pass ddrescue of it (using -f -n flags) to a 2TB drive that I had available (3 errors reported). Since this is one disk of a raid, there is no proper partition or file system information on it. You can replace a disk in a raid-5 with a larger one and it will rebuild OK, so I thought the 2TB disk would be fine, but it seems that that just cloning one of the disks of the raid array onto a larger disk will probably not work because in a raid array of this sort, some critical information must be stored at the last block of the disk
So I want the ddrescue copy to go onto an identical 1.5TB drive. I was able to get a matching 1.5TB drive so I would like to do the ddrescue onto that drive now. However, now that I have already done the ddrescue once, and presumably have most of the data on the 2TB drive. I want to access the original failed disk as little as possible to prevent making it worse - and hopefully just access the original failed disk to try and improve the error blocks as much as possible. My question is can I now ddrescue from the 2TB drive to the fresh 1.5TB drive and have everything end up in the right place - including having that "last block" from the original 1.5TB drive be in the right place on the new 1.5TB drive? Or do I really need to redo the ddrescue from the original failed 1.5TB disk to the new matching one? Thanks. -J |
_______________________________________________ Bug-ddrescue mailing list [email protected] https://lists.gnu.org/mailman/listinfo/bug-ddrescue
