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Re: Locking problems

To: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Subject: Re: Locking problems
From: Chris Tooley <ctooley@xxxxxxxx>
Date: 26 Aug 2002 13:48:41 -0500
Cc: Andi Kleen <ak@xxxxxxx>, Steve Lord <lord@xxxxxxx>, linux-xfs@xxxxxxxxxxx
In-reply-to: <20020826194527.A3750@infradead.org>
References: <1030377163.28487.16.camel@itspec.amoa.org> <1030381936.28544.22.camel@jen.americas.sgi.com> <20020826200658.A32118@wotan.suse.de> <1030385436.31858.20.camel@itspec.amoa.org> <20020826194527.A3750@infradead.org>
Sender: linux-xfs-bounce@xxxxxxxxxxx
On Mon, 2002-08-26 at 13:45, Christoph Hellwig wrote:
> On Mon, Aug 26, 2002 at 01:10:36PM -0500, Chris Tooley wrote:
> > > Suspect he refers to the iBCS/Linux ABI patches for SCO etc. emulation.
> > > Christoph should know more about it, he used to maintain that stuff.
> 
> I'm still looking after it.
> 
> > > I doubt it can cause specific data corruption thought - read/write
> > > should be directly handed through to the linux implementations because
> > > there is not much to emulate there.
> 
> *nod* - all emulations use write directly, and the only change in read for
> certain personalities is to allow read ond directories, returning sysvfs
> dirent.
> 
> > > Point-Of-Sale sounds like it'll be often power cycled without proper
> > > shutdown. This could cause problems if the HD does write buffer a lot of 
> > > data
> > > on its own. I would try applying the ordered writing patches or at least
> > > turn off the write cache of the HD.
> > >
> > The application is a linux application and runs in text mode only. 
> > There is no gui.  I can cause the same problems when I only allow ssh
> > access to it as well.  That means no reseting because I don't restart
> > the server.
> 
> Why do you need linux-abi then if it's a native application?
> 
Because I'm mostly a moron. ;)  It's a SCO application that only runs in text 
mode.

Unfortunately it doesn't have these problems with ext2.

Chris Tooley

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