Eugene Crosser posted on Sat, 02 Jul 2016 12:49:53 +0300 as excerpted: > Enter the second system. It is a rented physical server in a datacenter > with two hard disks, joined into a single root btrfs (/dev/sd[ab]1 are > swap partitions): > > root@dehost:~# uname -a > Linux dehost 3.13.0-91-generic [...] > root@dehost:~# btrfs --version > Btrfs v3.12 > root@dehost:~#
v3.12 userspace and v3.13 kernel are both ancient history in btrfs terms, far too old to provide anything useful in terms of debugging info. In general, btrfs is not yet fully stable, and usage on the production systems where that ancient a kernel and userspace might be considered for stability reasons is considered highly incompatible with that sort of an interest in stability at the cost of new features, because btrfs itself isn't anything close to that level of stable. So the general recommendation is choose one, either the still stabilizing btrfs on a more current system if you want btrfs, or something truly stable, if you really need that sort of years outdated stability. That said, while this list does tend to focus on mainline and the last two mainline releases series of the current and LTS kernels, so ATM 4.6 and 4.5 for current and 4.4 and 4.1 for LTS, not really much earlier, we recognize that various distros do backporting and support much further back. But this list tracks mainline, not those distro kernels, and specifically, we don't track what they've backported vs. what they haven't. So if you wish to use your distro's old kernels, that's fine, but you're going to be better off going to them for support then, because they'll know what they've backported and what they haven't and are thus in a better position to provide that support. Meanwhile, I do recognize that you had something similar happen on a much newer kernel as well, but that was on a different system, and you don't have the details or logs left for that one, so that's not of much help either. Unless of course you can duplicate the behavior once again with a reasonably current kernel within the two-release series either LTS or current range, as specified above, and can provide the logs, etc, from it... -- 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 majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
