Navid Zamani wrote:
Hello DM mailing list. I a have a simple question: Is there a way to use the device-mapper to hang an arbitrary program in-between a real block device, and the virtual device created by the device-mapper?
http://static.danplanet.com/dm-userspace/
In case you are interested in the reasons: Modern consumer HDDs do not have any ECC, but they get less and less reliable.
I don't think this is correct. All disks use ECC; cheap disks just don't use strong enough ECC. 4K sectors may fix this in the distant future.
So I decided to put my whole archive on a partititon with software-based ECC. And because I could not find something that resembled this, I chose to implement it myself.
Honestly I would use RAID + Btrfs instead of software ECC. But if you're determined to go down this path, you may want to investigate LDPC instead of RS.
Wes Felter - wesley@xxxxxxxxxx -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
