Duncan, Thank you for your thorough response to my problem. I am now wiser in my understanding of how btrfs works in RAID1 thanks to your words. Last night I worked with someone in the IRC channel and we essentially came to the exact same conclusion. I used wipefs -a on the errant drive. Rebooted and viola. As of last night the replace was running fine. (Didn't have time to check this morning before heading out) The people on IRC had recommended filing a bug based on the fact that a btrfs filesystem was created during the replace, but if I understand your feedback, this has already been noted and there are patches being considered.
As for your backup feedback, it has been thoroughly beaten into my head over the last half-decade that RAID is not backup. Although, I'd argue that RAID on btrfs or ZFS making use of snapshots is pretty darn close. (Since it covers the fat-finger situation - although it doesn't cover the MOBO frying your hard-drives situation) But I do have offsite backup - it's just that it's with a commercial provider (as opposed to, say, a friend's house) so I didn't want to have to download 3TB if things got borked. (I consider that my house burning/theft backup) And it IS in the plans to have a separate backup system in my house. I just haven't spent the money yet as it's currently a bit tight. But I do appreciate that you took the time to explain that in case I didn't know about it. And it's on the mailing list archives now so if someone else is under the misunderstanding that RAID is backup they can also be educated. Anyway, this is running a bit long. I just want to conclude by again offering my thanks at your very thorough response. If I hadn't been able to obtain help on the IRC, this would have put me on the right path. And it came with knowledge rather than just a list of instructions. So thanks for that as well. -- Eric Mesa http://www.ericmesa.com -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
