linux-kernel - Re: [GIT PULL] Btrfs updates for 2.6.31-rc

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <alpine.LFD.2.01.0906121450530.3237@localhost.localdomain>
Date:	Fri, 12 Jun 2009 14:55:33 -0700 (PDT)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Chris Mason <chris.mason@...cle.com>
cc:	linux-kernel@...r.kernel.org, linux-btrfs@...r.kernel.org
Subject: Re: [GIT PULL] Btrfs updates for 2.6.31-rc

On Thu, 11 Jun 2009, Chris Mason wrote:
> 
> Existing filesystems will be upgraded to the new format on the first
> mount.  All of your old data will still be there and still work
> properly, but I strongly recommend a full backup before going to the new
> code.

Auugh.

This is horrible. I just screwed up my system by booting a kernel on this: 
it worked beatifully, but due to other reasons I then wanted to bisect a 
totally unrelated issue. While having _totally_ forgotten about this 
issue, even if I was technically aware of it.

.. so I installed a new kernel, and now it won't boot due to "couldn't 
mount because of unsupported optional features (1)". In fact, I have no 
kernel available on that system that will boot, since my normal "safe" 
fall-back kernels are all distro kernels that can't boot this either.

Ok, so I'll end up booting from a USB stick, and it will all work out in 
the end, but this does essentially make it entirely impossible to do any 
bisection on any btrfs system.

Double-plus-ungood.

		Linus
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/