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Re: panic occurs on IA64

To: Rajagopal Ananthanarayanan <ananth@xxxxxxx>
Subject: Re: panic occurs on IA64
From: Ken McDonell <kenmcd@xxxxxxxxxxxxxxxxx>
Date: Wed, 6 Dec 2000 08:40:49 +1100
Cc: Russell Cattelan <cattelan@xxxxxxxxxxx>, Hiroshi Aono <h-aono@xxxxxxxxxxxxx>, linux-xfs@xxxxxxxxxxx
In-reply-to: <3A2D54B6.8C24942@sgi.com>
Reply-to: kenmcd@xxxxxxx
Sender: owner-linux-xfs@xxxxxxxxxxx
On Tue, 5 Dec 2000, Rajagopal Ananthanarayanan wrote:

> Ken McDonell wrote:
> > 
> > On Tue, 5 Dec 2000, Russell Cattelan wrote:
> > 
> > > Hiroshi Aono wrote:
> > >
> > > > Hi,
> > > >
> > > > I tried to run XFS on IA64, but kernel panic occurs.
> > 
> > The page size on IA64 is unlikely to be 4K bytes, so this already in
> > potentially dangerous territory.
> > 
> 
> We don't really have any manifest constants in XFS tied to 4K, AFAICT.
> The only restriction is that blocksize is tied to PAGE_SIZE &
> PAGE_CACHE_SIZE ... both of which should be same for a given ARCH.

Good, that is better than I had understood the situation to be.

Warning: following question based on ignorance.

    Will mkfs by default choose a blocksize that satisifies the
    "restriction is that blocksize is tied to PAGE_SIZE &
    PAGE_CACHE_SIZE"?

And what _exactly_ does this restriction mean, given the semantic
imprecision of "tied to"?

> Internally we had tried XFS on IA64 about 3 months back.
> At that time some things were functional and the instability
> mostly came from the hardware ...


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