Re: Btrfs tragedy: lack of space for metadata leads to loss of fs.

[Marc MERLIN <marc@merlins.org>]

On Tue, Aug 25, 2015 at 01:44:12PM +0000, Miguel Negrão wrote:
> Hi list,
> 
> This weekend had my first btrfs horror story. 
> 
> system: 3.13.0-49-lowlatency, btrfs-progs v4.1.2
 
Sorry to say, but that's a very old kernels with many btrfs bugs, some
did lead to corruption.

> A disclaimer: I know 3.13 is very out of date, but I the requirement of
> keeping kernel up to date clashes with my requirement of keeping a stable
> system. At the moment I can't disturb my system as I'm doing important work,

Unfortunately you have conflicting goals.

> upgrading kernel requires upgrading ubuntu, which will upgrade a lot of
> packages and might lead to problems which I don't have time to fix. One

You're doing it wrong :)
Upgrade/compile your own kernel without upgrading the OS.

> block group 32...... flags 36'). This is a OCZ vertex 3, a quite fast SSD.

I've had 5 (yes 5, I replaced my drive 4 times) OCZ Vertex 4 drives, and
they all gave me corruption with btrfs on unclean power down. The last
one didn't work any better, I just gave up and went to Samsung EVO 840
and those have been fine.

Marc
-- 
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
Microsoft is to operating systems ....
                                      .... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/                         | PGP 1024R/763BE901