RE: {bb} BB causing TSM to hang ?

[Philip Clark <bblist@cannae.uklinux.net>]

On Mon, 2005-09-12 at 20:39, Kimberly McKinnis wrote:
> When you say in general, are you implying that it ought to be already
> set to check only local disks? Interestingly, by default, Big Brother's
> df command does not use the -l flag. I found that ours was trying to
> check all the nfs mounts, which is less than desireable for my setup. I
> changed it in /usr/local/bb/bbc/etc/bbsys.local. 
> 
> 
>> 
>> One thing that does occur to me is the effect of the "df"
>> command. If "df" lists the storage systems that Tivoli is managing, the
>> client might be forcing those systems to be re-mounted every testing
>> cycle and that's a possible source of conflict. In general, only local
>> disks should be checked by the client software. Anything that's being
>> handled by Tivoli is probably more effectively tested through Tivoli.
>> 
>> Cheers, Phil.
>> 

No such implication was intended :) I was only expressing my humble
(and possibly erroneous) opinion that, where the BB client is used
on a machine with NFS mounts, the "df" command should usually be
modified so that it only lists the local disks.

As to why this is often not the default setting, I suspect a
combination of the following:

  1. BB is most often used for "server" class machines, which
     are more likely to export disk space rather then mount
     remote disks. "Desktop" machines are more often monitored
     via the (l)users (though constant "attitude re-adjustment"
     may be required to avoid false positives).

  2. The "df" command (much like Heinz canned goods) actually
     comes in more than 57 varieties. Keeping up with which
     flag is needed on what OS and version would rapidly turn
     into a nightmare.

Interestingly, the HP-UX equivalent (bdf) is provided with
the "-l" (local) flag by default. That's probably a good
description of HP. They are weird, but at least they're
consistently weird :)

Cheers, Phil.



-- 
By the time they had diminished from 50 to 8, the other dwarves began
to suspect 'Hungry.' (Gary Larson, "The Far Side")

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