df and du problem

From: Nikola Milutinovic <Nikola.Milutinovic_at_ev.co.yu>
Date: Mon, 13 Dec 1999 08:24:56 +0100

Hi all.

I have several AS4100 servers which have Mylex RAID controller and 5 - 7 disks
(RZ29) configured as one large RAID5 disk. I always partition that disk with a,
b and g partitions for "/", "swap" and "/usr" filesystems. We use AdvFS for all
of our filesystems.

Then I create "oracle" filset within usr_domain, maiking usr and oracle share
the same physical space. Of course "df" % values for this are not obviously
correct (as described in man), but that is not my problem.

When the filesystem gets almost or completely full (95% or more) df gets stuck.
When the files are deleted "df" doesn't get it and keeps reporting highest
usage. The solution for this was reported on OSF1 newsgroups, turning diskquota
on.

But now I have another problem, turning diskquotas on doesn't reclaim freed
space. There was some situation where our usr_domain was 100% full, someone has
deleted files and THEN I turned dsikquotas on. Now "df" reports every consequent
freeing of space, but doesn't recalim what was freed prior to turning quotas on.

Any ideas, apart from umount/mount? Would unmounting one fileset be sufficient,
"oracle" for instance? I could survive that, unmounting /usr would require
shutdown and the machine is 50 miles away from me.

Nix.
Received on Mon Dec 13 1999 - 07:26:55 NZDT

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