DISK QUOTAS ON POP
==================


Philosophy
----------

Each user has a limit for disk use on /home1 (thier home directory). At
leasy initially all quotas will be the same (400MB).

There are no quotas for /tmp. Users sharing the CPUs on one node must
fight over /tmp themselves. Users with large storage requirements
should make that known (>600MB on /tmp).


Red Hat distribution
--------------------

It seems that quotas are turned on in the default RedHat5.0 kernel.


Files
-----

/sbin/quotaon
/sbin/quotaoff
/sbin/quotacheck
/usr/sbin/edquota
/usr/sbin/repquota
/usr/sbin/quotastats

/usr/bin/quota

To get a report of the quota usage and settings for /home1 or simeon
  /sbin/repquota /home1
  /sbin/repquota -u simeon
If messing about as root then you need to do a quotacheck before
looking at peoples quotas:
  /sbin/quotacheck /home1; /sbin/repquota /home1

To edit one user's quota (simeon)
  /usr/sbin/edquota -u simeon 

To copy one user's quota (simeon --> smc)
  /usr/sbin/edquota -p simeon smc
 
  
System configuration
--------------------

Quota starting etc. is in the standard /etc/rc.d/rc.sysinit

To set up a replacement script for /usr/bin/quota (moved to
/usr/bin/quota.local on all but pop01). Not that we must have
the real executable as /usr/bin/quota on pop01 else the
little rsh script will loop forever!

[root@pop01]# ls -la /usr/bin/quota
-r-xr-xr-x   1 root     root        10908 Oct 20  1997 /usr/bin/quota
[root@pop01]# cp /usr/bin/quota /usr/bin/quota.local
[root@pop01]# pop.copy /usr/bin/quota.local
Copying /usr/bin/quota.local to /usr/bin/quota.local on...
pop02 pop03 pop04 pop05 pop06 pop07 pop08 pop09 pop10 pop11 pop12 pop13 pop14 ..done.
[root@pop01]# cat - > /usr/bin/quota.pop01
#!/bin/sh
rsh pop01 "quota $1 $2 $3 $4"
[root@pop01]# chmod a+rx,a-w /usr/bin/quota.pop01
[root@pop01]# pop.copy /usr/bin/quota.pop01
Copying /usr/bin/quota.pop01 to /usr/bin/quota.pop01 on...
pop02 pop03 pop04 pop05 pop06 pop07 pop08 pop09 pop10 pop11 pop12 pop13 pop14 ..done.
[root@pop01]# cat - > /usr/bin/quota
#!/bin/sh
echo "[local]"
/usr/bin/quota.local
echo "[pop01]"
/usr/bin/quota.pop01
[root@pop01]# chmod a+rx,a-w /usr/bin/quota
[root@pop01]# pop.copy /usr/bin/quota
Copying /usr/bin/quota to /usr/bin/quota on...
pop02 pop03 pop04 pop05 pop06 pop07 pop08 pop09 pop10 pop11 pop12 pop13 pop14 ..done.
[root@pop01]# cp /usr/bin/quota.local /usr/bin/quota
cp: overwrite `/usr/bin/quota'? y


User interface and messages
---------------------------

To see quota, just type `quota' which should find /usr/bin/quota. On pop01 
this file is the normal quota. On the other nodes it is a script that
runs quota locally (renamed /usr/bin/quota.local) and then quota on pop01.

Error messages when quota exceeded:

From pop01 something like
	/home1: write failed, user disk limit reached.
	cp: x: Disc quota exceeded
From other nodes something like
	NFS input/output error

[Simeon Warner - 10Jul98]


Updated to use ssh 
------------------	
	
Just changed /usr/bin/quota.pop01 to use ssh not rsh on all machines. File
is now:

#!/bin/sh
ssh pop01 "quota $1 $2 $3 $4"

[Simeon Warner - 25Aug98]

-------------------------------------------------------------------------------