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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) |
Hi,
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. ;-)
Regards,
Fredrik