2 TB quota limit on a RAID box?
Scientific Unix (clone of Red Hat Enterprise 5), x86_64
ext3 file system
I just set up a 6 TB RAID for a small group of users. There are some of them who will fill up all space available, so I decided to set quotas. I chose to make a hard quote of a little more than 2 TB, and I got a surprise. When I used edquota, it reduced the quota for a small number. After a bit of thought I realized that the number of disk blocks in 2 TB is the biggest number that will fit in a 32-bit unsigned integer. I cut the limit down to a little less than 2TB, and it seems to be happy.
Inquiring minds want to know:
Is this a general limit on ext3 file systems?
How would other file systems compare?
(Feel free to start a religious war about the various file systems; I'm curious.)