On Oct 2, 2013, at 6:49 PM, Martin <m_btrfs@xxxxxxxxx> wrote: > kernel: btrfs read error corrected: ino 1 off 907183792128 (dev /dev/sdc sector 1781821200) Can anyone answer if this is what corrupt metadata detection and correction looks like? From the original email this is a single disk, with default mkfs.btrfs. So I guess I'm asking an almost obvious question, but I'm still going to ask it. There is only one copy of data, but two copies of metadata so it can self-correct for metadata corruption. Next question. Why is -o recovery needed to get this correction behavior? The original post was completely devoid of messages indicating correction. Chris Murphy-- 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