For more thorough completeness.
Dr. Blinn sent the following response to my problem. It is very relevant.
I did remove the link /sbin/swapdefault to implement "lazy" swap allocation
policy.
The /sbin/init.d/paging responsible for turning on initial swapping will
execute /sbin/swapon -a only if PAGERAW=1 is define in rc.config.
In my system, delivered pre-installed, PAGERAW did not exist in rc.config
This means that /sbin/swapon -a would never execute at boot time which I
believe would be inadequate.
Older systems did have PAGERAW and other apparently related definitions in
rc.config, thus my request for guidance.
It would seem that the approach taken seems appropriate, though additional
related definitions may be required for other purposes ???
I resolved the problem by defining PAGERAW in rc.config
# rcmgr set PAGERAW 1
Thanks to all again
Carmelo Granja
C.Granja_at_med.McGill.CA
> Hi,
>
> My system an Alpha Server 1000A with DU V4.0D is not installing the
existing
> swap partion at boot time, the command
>
> # swapon -a
>
> does intall it.
>
> After some investigation, I found that /etc/rc.config does not contain any
> references to PAGEFILE PAGERAW PAGEMINSZ PAGEMAXSZ
> which are defined in another system with DU V3.2 so I imagine they may
also
> be needed here.
>
> If the above is indeed the problem could someone recommend how best to
> proceed so that the default swapping gets installed at boot time
> automatically.
>
> Thanks so much
>
> Carmelo Granja
>
> C.Granja_at_med.McGill.CA
Someone (perhaps you) removed the symbolic link /sbin/swapdefault, or gave
it a different name. This makes the difference between "eager" and "lazy"
swap allocation policy, and not having it may be appropriate. If it's not
present, then you must have an entry in /etc/fstab to enable swapping to the
default partition. A "swapon -a" is normally executed during system startup
by one of the scripts in /sbin/rc2.d, but of course, someone might have made
that not work, too.
In my /etc/fstab, I have:
/dev/rz0b swap1 ufs sw 0 1
/dev/rz1b swap2 ufs sw 0 2
/dev/rz2b swap2 ufs sw 0 2
/dev/rz3b swap2 ufs sw 0 2
because I swap to all three of these disks.
The entries in /etc/rc.config are NOT USED by DIGITAL UNIX. You have have
them or leave them out.
The relevant startup script (that would use those entries if it did use
them) is
/sbin/rc2.d/S05paging
which is a symbolic link to
/sbin/init.d/paging
which is a /sbin/sh shell script that you can read to see how swapping is
turned on in DIGITAL UNIX at boot time.
Tom
Dr. Thomas P. Blinn, UNIX Software Group, Digital Equipment Corporation
110 Spit Brook Road, MS ZKO3-2/U20 Nashua, New Hampshire 03062-2698
Technology Partnership Engineering Phone: (603) 884-0646
Internet: tpb_at_zk3.dec.com Digital's Easynet: alpha::tpb
ACM Member: tpblinn_at_acm.org PC_at_Home: tom_at_felines.mv.net
Worry kills more people than work because more people worry than work.
Keep your stick on the ice. -- Steve Smith ("Red Green")
My favorite palindrome is: Satan, oscillate my metallic sonatas.
-- Phil Agre, pagre_at_ucsd.edu
Yesterday it worked / Today it is not working / UNIX is like that
-- apologies to Margaret Segall
Opinions expressed herein are my own, and do not necessarily represent
those of my employer or anyone else, living or dead, real or imagined.
Received on Thu May 07 1998 - 16:16:48 NZST