Am Sonntag, 28. Oktober 2012 schrieb Hugo Mills: > On Sun, Oct 28, 2012 at 02:23:51PM +0100, Martin Steigerwald wrote: > > Am Sonntag, 28. Oktober 2012 schrieb Ronnie Collinson: > > > In a raid1 situation, it will also rewrite the effected data, on > > > the drive that failed the checksum > > > > Will it do so without an explicit scrub? > > If a failed checksum is detected, yes. > > If there's a bad block, and the FS happens to read the good copy > first, it won't fix it, because it hasn't tried reading the bad copy > yet.
Ah, okay. I think I read some while ago in a case of bad checksum detected it won´t repair automatically. Has this been changed? Anyway, a regular scrub still makes sense, as BTRFS only reads files that applications demand and BTRFS may read from a good copy as you pointed out. Thanks, -- Martin 'Helios' Steigerwald - http://www.Lichtvoll.de GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
