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RE: [Xen-devel] Unstableness in grant table block drivers

To: "Anthony Liguori" <aliguori@xxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: RE: [Xen-devel] Unstableness in grant table block drivers
From: "Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>
Date: Thu, 14 Apr 2005 02:16:37 +0100
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Thread-index: AcVAje8+46VckSxUSyeZwFfLownD8gAADSdg
Thread-topic: [Xen-devel] Unstableness in grant table block drivers
> We've experienced a lot of problems in the new grant 
> table-based block drivers.  It's exposing itself in a number 
> of ways.  I've seen it stop working after working for a bit, 
> sometimes XenU stops half-way through boot, and on one system 
> init panics because it can't find a root filesystem.

OK, that's news to us - we haven't seen any problems.

It's been tested with dd's and kernel builds, and wasn't expected to be
a particularly dangerous change.

How you confirmed that disabling the option fixes your problems? Can you
give a simple recipe to provoke problems?

> I know the last week's been really busy, but in the future, 
> it would be nice if a big destabilizing change like this 
> could get announced on xen-devel so we could be on the look 
> out for these sort of bugs.

It doesn't seem to be destablizing, at least for us. Possibly there's
been some feature interaction with later checkins. 

Anyone using the unstable tree should be reading the changelog
closely...

Ian

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