What's the kernel and btrfs progs version? I wish the dmesg errors were more explicit about the nature of checksum errors: do the two metadata checksums mismatch each other (one of them matches with data), or the metadata checksums match each other but mismatch with data?
Hopefully I'm mistaken, but it looks in this case that the data is actually corrupt, not the metadata. In which case repair would only be possible for raid1 or raid10 data profiles. Why the corruption occurred depends on kernel and btrfs-progs versions, and what you were doing prior to the corruption so dmesg prior to the corruption would be needed and also when trying to mount with the recovery option so it might be worth: dmesg [note the last time entry] dmesg -n7 btrfs mount -o recovery <dev> <mp> dmesg report results since the previously noted last time entry Chris Murphy-- 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
