Date: Mon, 25 Jan 1999 14:38:50 -0800 (PST) From: Matthew Dillon <dillon@apollo.backplane.com> To: Poul-Henning Kamp <phk@critter.freebsd.dk> Cc: Mike Smith <mike@smith.net.au>, cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG Subject: Re: cvs commit: src/sys/kern kern_mib.c Message-ID: <199901252238.OAA08071@apollo.backplane.com> References: <22574.917300357@critter.freebsd.dk>
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:A far better, and more UNIX like, way would be to mount a MFS on
:some directory and stick the info there...
Not a bad idea -- the problem with this is that we have to get
at our machine-specific rc.conf.local ( as in integrate it into
rc.conf ) very early in the boot sequence, before any MFS filesystems
are created. I don't want to create a 'special' case with rc.conf
where it does not always return the correct configuration when run
standalone.
:Along those likes, I would really like to see a "true" VMFS instead
:of the hack MFS is. Isn't that a task for you since you have more
:insight into the VM system than I do ?
:
:The trick is to write a new backend for UFS (like mfs/ffs and to
:some extent ext2fs), which uses a VM object with anonymous backing
It's actually simpler then that --- MFS is nothing but a gratified block
device. It should work just as well with a direct swap-backing ( just like
a real filesystem ) as with a VM address space. Better even, since the
VM address space in the MFS process essentially doubly-caches everything.
I do intend to fix it eventually, but right now I am waiting to see what
other bugs get threshed out from the VM work I've already done so I am
occupying myself with a few side projects in the tree :-)
-Matt
:for each inodes storage requirement. The most tricky bit is
:casting things from VA to ufs-block number, the rest is downhill.
:
:
:--
:Poul-Henning Kamp FreeBSD coreteam member
:phk@FreeBSD.ORG "Real hackers run -current on their laptop."
:FreeBSD -- It will take a long time before progress goes too far!
:
:
Matthew Dillon
<dillon@backplane.com>
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