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Re: Improving object mobility within the Hurd

From: Carl Fredrik Hammar
Subject: Re: Improving object mobility within the Hurd
Date: Tue, 27 Jan 2009 17:44:22 +0100
User-agent: Mutt/1.5.18 (2008-05-17)


this is just a small correction to my previous mail.

On Thu, Jan 22, 2009 at 10:54:53AM +0100, Carl Fredrik Hammar wrote:
> Take copy store as an example.  The copy store makes a copy-on-write
> copy of another store and discards changes when closed.  For instance,
> a copy store over a zero store is useful for backing /tmp.
> If a copy store where to migrate, then all modifications would also be
> copied.  Writes made to the copy would not be reflected in the original
> and vice versa.  Because of this, the copy store has the enforced flag set,
> which makes storeio refuse migration requests.

It seems I read a bit too much into a comment regarding the enforced
flag.  The actual mechanism that prevents migration is its marshalling
method that always returns EOPNOTSUPP.

Just so nobody gets hung up on this little miss.  ;-)


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