ADSM-L

Re: busy rootvg during restarts

2005-09-29 13:21:26
Subject: Re: busy rootvg during restarts
From: Bob Booth - UIUC <booth AT UIUC DOT EDU>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Thu, 29 Sep 2005 12:20:50 -0500
On Thu, Sep 29, 2005 at 07:15:39PM +0200, Stef Coene wrote:
> On Thursday 29 September 2005 17:23, Wheelock, Michael D wrote:
> > Hi,
> >
> >
> >
> > Every time I halt and restart my tsm server, the rootvg disk becomes
> > extraordinarily busy.  I have moved all of the database, and logs to
> > another location.  The only file that I know of that is still on rootvg
> > (besides the normal binaries and config files) is the volhist file.
> > Does TSM hammer that volhist file on startup?
> Maybe the swap file ?
> Try nmon (you can download it from ibm.com).  It can show you a top list of
> processes that uses the most I/O.

Do you use the 'page shadow' feature?  If so, look at where that file is
located.

You might want to look into filemon or some other utilities to see what part
of the disk is getting I/O.

hth,

bob

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