Re: [PATCH v2] Btrfs: remove superblock writing after fatal error

[David Sterba <dave@xxxxxxxx>]

On Thu, Aug 02, 2012 at 03:46:50PM +0200, Arne Jansen wrote:
> > Anyway, for now, our error flag has only been stored in memory, so what
> > about just keep it until we find a graceful way?
> 
> Yeah, we need this patch to restore consistency. We can define a fixed
> area on disk (e.g. behind the superblock) where we can write the flag
> to without risking the superblock.

Is it possible that sectors around the superblock are somehow damaged
and unwritable that writing to them will fail as well? Ie. some safe
distance from the superblock would be needed.

david
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html