May 2006 – Carleton Astronet Admin Log

IDL startup scripts for accessing Arecibo routines

Published by jweisber on 2006-05-30

If you want to access Arecibo routines inside idl, copy joels

.idlenv

and

.idlstartup

from his home directory to yours.

IDL 6.3 is on algol,mirzam,sirius

Published by jweisber on 2006-05-30

we purchased two more licences, bringing the total to three.

IDL Arecibo Phil routine “.h” file directory moved slightly to work on algol

Published by jweisber on 2006-05-14

NOTE: SEE BOTTOM OF THIS POST FOR UPDATE:

i moved the h subdirectory below rather than at the same level as the gen directory. now idl on algol finds it and starts up fine with phil’s routines:

Now on algol at:

/data/psrdata/usr4/OH/wapp03/philstuff/gen/h

rather than at

as on arcturus at

/data/psrdata/usr4/OH/wapp03/philstuff/h

——————————-
but note that in late May 2006 JMW realized it is more subtle than this:

in /data/psrdata/usr4/OH/wapp03/philstuff/gen/

in aodefdir.pro, i had to define the path to

/data/psrdata/usr4/OH/wapp03/philstuff/

at which point all path difficulties cleared up. so the above “fix” is obsolete (if it ever worked!) In future installations, it should not be necessary to move the h directory.

Converting RAID to LVM-on-RAID

Published by admin-joel on 2006-05-05

OUT OF DATE as of 2008-11-01.

We decided to convert the Raid1 array to LVM instead of a monolithic partition. This will make life easier.

Commands:

pvcreate /dev/md0
makes a physical volume out of the RAID array device
vgcreate VolGroup01 /dev/md0
creates a new volume group to which we can add logical volumes
Use Redhat Logical Volume Management tool to create partitions on the new device

/docs (5 gigs)
/home (50 gigs)
/etc/secret (10 gigs)
/data (399 gigs)

Modified /etc/exports on Algol to export the new partitions
Modified /etc/fstab on the client computers to use the new partitions

mkdir /docs

mkdir /data

added lines to /etc/fstab:
algol:/data /data nfs defaults 1 1
algol:/docs /docs nfs defaults 1 1

Un-tarred the backups from /bkup, which I created with the command:
cd /bkup & tar -czvpf home.tgz /home
Untar by going to desired directory and running:
tar -xzvpf /bkup/secret.tgz
Both of these commands put the directory INTO the desired directory. Once unpacked, it’s necessary to move the contents to the proper location.
Modified /etc/cron.weekly/quotacheck.cron to be:
#!/bin/bash
# Update the database that keeps track of quotas
# Created by Mark Knight (4.13.06)
# Modified by Mark Knight (5.06.06)
quotaoff -a
quotacheck -agum
quotaon -a

exit 0
Also, had to modify /etc/fstab to add quotas back on to the new mount line for /home

All in all, not that hard. The permissions are all correct, so hopefully this was just as easy & painless as I think it was.

Changes to Algol

Published by admin-joel on 2006-05-02