Re: Fibration questions

[Hans Reiser <reiser@namesys.com>]

Markus Törnqvist wrote:

>On Wed, Jul 21, 2004 at 11:08:13PM -0500, David Masover wrote:
>  
>
>>- have our own area inside 'metas' which is always local, to allow
>>things like forcing particular files to always be in the cache
>>    
>>
Is this the sticky bit or new?

>
>Hmm. This is interesting. Difficult to wrap my brain around it, though :))
>Is it a bit like what I've understoon union mounts to be?
>Where would this data be stored, if it's in metas? Stat data on the
>local partition that's not bound to a specific file? Wouldn't fsck
>now fix that as a broken fs?-)
>
>  
>
>>First question:  Can I manually enable/disable a particular plugin for a
>>particular directory?  (like how cryptocompress is supposed to be...)
>>    
>>
>
>Sure, but for example with fibration you can't re-fibrate a directory.
>You have to move the stuff out and back in after you've changed the
>policy.
>
>With tail policies you must access the file in order to get it moved
>out of tails, if you change the formatting to never.
>
>The Namesys Guys may want to correct me on those above notions, if
>they're totally wrong.
>  
>
Some plugins are mutable, some are not, and some are mutable when empty 
or some other condition applies.   We should document it for all of them.