Goffredo Baroncelli posted on Sat, 14 Nov 2015 12:09:21 +0100 as excerpted: > On 2015-11-14 11:43, audio muze wrote: >> I can turn checksumming off given it's of no utility where a Btrfs >> volume is comprised of a single device only? > > The checksums are used to detect a data corruption; in case of a > btrfs-raid, the checksums are used *also* to pick the good copy. And yes, you can turn them off (for data, not metadata), using the nodatasum mount option. Tho personally, I prefer raid1, not just for the normal raid1 capacities, but for the ability to scrub corrupt data as well, and thus would never turn off checksumming here (except possibly in the context of nocow, for vm images, etc). -- Duncan - List replies preferred. No HTML msgs. "Every nonfree program has a lord, a master -- and if you use the program, he is your master." Richard Stallman -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
