[TUHS] 2.9BSD on an actual rl02 - swap confusion

Jacob Ritorto jacob.ritorto at gmail.com
Mon Feb 9 06:52:20 AEST 2015

Hey, thanks Guys!  Ok, good that the kernel already knows about it.

  The actual problem I'm having is that ps doesn't work.

  I assume it tries to look at /dev/swap as its pointer, but since there's
no /dev/rl0a, dev/swap has nothing reasonable to point to, so ps fails with
/dev/swap: no such device (iirc).

  Was thinking of experimentally linking /dev/swap to rl0 but logic
dictates that would trash the root filesystem (which is nbd since I can
easily restore the 2.9 rl02 root from the archives with Warren's vtserver!)

Gonna go read some source.  Thanks!


On Sun, Feb 8, 2015 at 3:42 PM, Noel Chiappa <jnc at mercury.lcs.mit.edu>

>     > From: Jacob Ritorto
>     > I'm having trouble understanding how to get my swap configured. Since
>     > rl02s are so little, the MAKE file in /dev doesn't partition them
> into
>     > a, b, c, etc. However, when MAKE makes the /dev/rl0 device, it uses
>     > only 8500 of its 10000 blocks, so what would presumably be intended
> as
>     > swap space does exist. Swap is usually linked to the b partition,
>     > right? So how do I create this b partition on an rl02?
> I don't know how the later systems work, but in V6, the swap device, and
> the
> start block / # of blocks are specified in the c.c configuration file (i.e.
> they are compiled into the system). So you can take one partition, and by
> specifying less than the full size to 'mkfs', you can use the end of the
> partition for swap space (which is presumably what's happening with
> /dev/rl0
> here).
>         Noel
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