On Wed, 10 Aug 2011 20:06:28 +0000
"Robin H. Johnson" <robbat2@g.o> wrote:

> On Wed, Aug 10, 2011 at 01:32:12PM +0200, Michał Górny wrote:
> > > > That one's udev specific? I guess it could be moved as well.
> > > 
> > > It's a blkid(8) cache to mount stuff by uuid/label and guess FS.
> > > Used at least by udev rules and stuff linked against libblkid
> > > (fsck.*). Both can be triggered at any time later after boot.
> > > blkid(8) can work w/o cache.
> > 'Cache' is the key-word here. I suggest pinging upstream
> > that /var/cache is there for some reason.
> It was historically in /etc because it got used to mount /var.
> As an example, if you grab some RHEL systems on the default install,
> every entry in the fstab is UUID=... rather than fixed devices. Not
> having the cache the mounts will still work, but will be very slow as
> all devices will be rescanned.

I guess /run would be the correct modern location for it then.

-- 
Best regards,
Michał Górny