trevor@trevan.UUCP (trevor) (07/04/89)
The distribution Microport V/AT has a swap device witha major number of 1 and minor of 198. This is infact the mem device. I suspect that it is redundant as the swap devices are also contained in the dsk and rdsk directories. regards trevor
wnp@attctc.DALLAS.TX.US (Wolf Paul) (07/06/89)
In article <368@trevan.UUCP> trevor@trevan.UUCP (trevor) writes: > > The distribution Microport V/AT has a swap device witha major >number of 1 and minor of 198. This is infact the mem device. I suspect >that it is redundant as the swap devices are also contained in the dsk and >rdsk directories. I am not absolutely certain, but believe that this is related to the fact that the Microport boot disk in releases 2.3 and later is WRITE-PROTECTED, and there is therefore no real swap device in a floppy-rooted system. I believe that this does get rectified on the hard disk by the "installit" script. As to your comment in your previous posting about cc -Ml requiring a space between the 'M' and the 'l' (and likewise for -Ms) -- I have not observed this in any of the releases and have been using Microport V/AT for three years now. Wolf ha -- Wolf N. Paul * 3387 Sam Rayburn Run * Carrollton TX 75007 * (214) 306-9101 UUCP: {texbell, attctc, dalsqnt}!dcs!wnp DOMAIN: wnp@attctc.dallas.tx.us or wnp%dcs@texbell.swbt.com NOTICE: As of July 3, 1989, "killer" has become "attctc".
pcg@aber-cs.UUCP (Piercarlo Grandi) (07/06/89)
In article <368@trevan.UUCP> trevor@trevan.UUCP (trevor) writes:
The distribution Microport V/AT has a swap device witha major
number of 1 and minor of 198. This is infact the mem device.
The kernel on the floppy uses a ramdisk for swapping so that the bootable
floppy can be read only. You absolutely don't want a hard disk rooted system
to continue swapping to the ramdisk. Indeed you may want to remove the
ramdisk from the hard disk kernel configuration (in favour of larger buffer
chaches).
I suspect that it is redundant as the swap devices are also contained in
the dsk and rdsk directories.
The kernel only obeys the "swapdev" definition given when it is built; it
completely ignores the /dev*swap device files. The /dev*swap device files are
used by "ps" (mainly) to read the u-area/stack of swapped out processes. It
is the system administrator's responsibility that the /dev/*swap devices map
onto the same partition indicated in the "swapdev" variable definition; if
they are not, "ps" (and some other commands) will just report incorrect
things.
--
Piercarlo "Peter" Grandi | ARPA: pcg%cs.aber.ac.uk@nsfnet-relay.ac.uk
Dept of CS, UCW Aberystwyth | UUCP: ...!mcvax!ukc!aber-cs!pcg
Penglais, Aberystwyth SY23 3BZ, UK | INET: pcg@cs.aber.ac.uk