Re: [Vserver] vhashify on Debian / CoW links not breaking on chmod/chown?

From: Herbert Poetzl <herbert_at_13thfloor.at>
Date: Wed 01 Feb 2006 - 20:53:03 GMT
Message-ID: <20060201205303.GC25228@MAIL.13thfloor.at>

On Wed, Feb 01, 2006 at 06:29:05PM +0100, Grzegorz Nosek wrote:
> Hello all,
>
> I started playing with vserver unification recently and I'd like to
> share my two observations:
>
> - under Debian (sarge at least) you cannot use the supplied beecrypt2
> packages as they have a slightly different API (changes are subtle
> enough that util-vserver will compile but hashcalc will die with a
> segmentation fault). Use beecrypt4:
> http://prdownloads.sourceforge.net/beecrypt/beecrypt-4.0.0.tar.gz?download

good to know ... well a lot of stuff is broken
in sarge, hope we can fix that soon ...

> - If I modify a file's contents the CoW link is broken properly but
> after a chmod or chown the link is not broken and I get -EPERM (as the
> files are marked immutable) - is this expected behaviour? In such a
> situation the links aren't exactly CoW...

interesting observation, well, strictly speaking
chmod or chow are no writes, so CoW is not involved,
but I will look into extending the CoW behaviour
to those operations in the future ...

thanks,
Herbert

> Best regards,
> Grzegorz Nosek
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