On Thu, 1 Jun 2006, Stephen C Woods wrote:
I do have a question about changing quotas all that often, if the quotas are properly set, users should not be bumping into them all that offten, nad if they do bump onto them, perhaps thay need to clean up a bit? With 5000 odd users (and some of them are very odd) we find that we need to change quotas perhaps once or twice a month if that often.
It's not so much a question of users bumping into quotas as a very dynamic set of users - n x 10^6 in n x 10^3 groups - as users are added to / removed from or change between groups the group quotas will need to be updated.
I don't think you understand how group quotas work. They are not affected by moving users between groups. In other words, setting a group quota does not limit the disk usage of users who are members of that group. A group quota limits the disk space used by files and directories that have a particular group id. For example, if you have a file whose group id is G and you want to enlarge the file, you will be limited by the group quota for G. You will also be limited by the user quota for the user that owns the file. The smaller limit wins.
Group quotas have very limited usefulness, if any at all.
You probably need to use tree quotas to get what you want.
Steve Losen scl@virginia.edu phone: 434-924-0640
University of Virginia ITC Unix Support