Re: thin provisioned LUN support & file system allocation policy

Ric Wheeler
2008-11-07T16:03:31Z

jim owens wrote:
> Ric Wheeler wrote:
>
>> The type of allocation that would help most is something that tries
>> to keep the lower block ranges "hot" for allocation, second best
>> policy would simply keep the allocated blocks in each block group hot
>> and re-allocate them.
>
> This block reuse policy ignores the issue of wear leveling...
> as in most design things, trading one problem for another.
>
> jim

Wear levelling is not a problem for all (most?) T10 unmap capable arrays
since they remap pretty much everything internally,

Ric