On 03/31/2012 04:25 PM, Walter Dnes wrote:
> On Sat, Mar 31, 2012 at 10:42:50AM -0700, Zac Medico wrote
>> On 03/31/2012 06:34 AM, Pacho Ramos wrote:
>>> About the wiki page, I can only document reiserfs+tail usage as it's the
>>> one I use and I know, about other alternatives like using squashfs, loop
>>> mount... I cannot promise anything as I simply don't know how to set
>>> them.
>>
>> Squashfs is really simple to use:
>>
>>    mksquashfs /usr/portage portage.squashfs
>>    mount -o loop portage.squashfs /usr/portage
> 
>   Don't the "space-saving filesystems" (squashfs, reiserfs-with-tail,
> etc) run more slowly due to their extra finicky steps to save space?  If
> you really want to save a gigabyte or 2, run "eclean -d distfiles" and
> "localepurge" after every emerge update.  I've also cobbled together my
> own "autodepclean" script that check for, and optionally unmerges
> unneeded stuff that was pulled in as a dependancy of a package that has
> since been removed.

Well, in this case squashfs is more about improving access time than
saving space. You end up with the whole tree stored in a mostly
contiguous chunk of disk space, which minimizes seek time.
-- 
Thanks,
Zac