Re: [RFC, patch 1/2] Allow up to 1GB logs in mkfs.xfs

[Lachlan McIlroy <lachlan@sgi.com>]

David Chinner wrote:
> On Fri, Feb 22, 2008 at 01:44:38PM +1100, Niv Sardi wrote:
>> David Chinner <dgc@sgi.com> writes:
>>> Increase the maximum log size supported by mkfs.
> ....
>>> Hence logs larger than 2^30 will not work without kernel
>>> modifications.  Therefore this change is limited to increasing the
>>> log size to what we can currently support in kernel space with
>>> needing kernel modifications.
>> I'm glad you got time to get around this, I didn't include it in the
>> first batch as I was told it 'broke things'.
> 
> Right. There's all sorts of nasties lurking if we go over 1GB in
> size, but AFAICT up to 1GB is OK. There's still lots of validation
> needing to be done - that's why this is an "RFC" and not something
> ready for checkin yet. That's where more eye's and testers are
> handy...
> 

Dave, have you run any tests to see if we get any speed-ups with
this change?