Dale wrote:
Kerin Millar wrote:
Helmut Jarausch wrote:
On 10/24/2012 03:54:39 PM, Nikos Chantziaras wrote:
Kernels 3.4, 3.5, and 3.6 can result in severe data corruption if
you're using the EXT4 filesystem:
It looks as if Eric Sandeen has found the culprit and Theodore Ts'o has
suggested this patch yesterday
https://lkml.org/lkml/2012/10/28/309
Helmut.
Here's the final patch:
https://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=ffb5387
It turns out to have had nothing to do with nobarrier.
--Kerin
Could you explain a little on who it could have affected? Is it more
serious or less serious than originally thought? This is for those of
us who don't subscribe to the kernel mailing list, which I have read is
hugely active.
I would describe the bug itself as serious but it will affect few users
because journal_checksum isn't enabled by default. Ted submitted a patch
to enable the option by default back in 2009 but it was reverted a few
months later by Linus due to this bug:
https://bugzilla.kernel.org/show_bug.cgi?id=14354
I'm pretty sure that it hasn't since been re-enabled as a default. As
long as you haven't enabled this option, you shouldn't have anything to
worry about.
--Kerin
