Re: xfs_fsr, performance related tweaks

[Just Marc <marc@corky.net>]

Hi Eric,

In my particular case, and I'm sure for many other people, files that 
are stored never change again until they deleted.  I hinted that there 
could be a command line switch to turn this functionality on, as it may 
not be perfect for everyone's use cases.

If nobody likes this still, I would appreciate some hints on how to mark 
files as no-defrag from within fsr itself given that I only have the 
file descriptor ... A hack like looking up the descriptor in 
/proc/self/fd should work, but is linux specific and is too hackish in 
my opinion.   I'd like to at least have a nice simple patch for my own uses.

Marc


Eric Sandeen wrote:
> Just Marc wrote:
>
>   
>> 2. Files for which 'No improvement will be made' should also be marked 
>> as no-defrag, this will avoid a ton of extra work in the future.   
>>     
>
> But... that file could drastically change in the future, no?  Just
> because it can't be improved now doesn't necessarily mean that it should
> never be revisited on subsequent runs, does it?
>
> -Eric
>
>
>