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RE: using dmapi to sync filesystems (was using xfsdump...)

To: Matthijs van der Klip <matthijs.van.der.klip@xxxxxx>
Subject: RE: using dmapi to sync filesystems (was using xfsdump...)
From: Steve Lord <lord@xxxxxxx>
Date: 11 Dec 2001 08:48:49 -0600
Cc: "'Dean Roehrich'" <roehrich@xxxxxxx>, "'linux-xfs@xxxxxxxxxxx'" <linux-xfs@xxxxxxxxxxx>
In-reply-to: <35F87783B600D411A1430060943F469A58973A@EXCHANGE>
References: <35F87783B600D411A1430060943F469A58973A@EXCHANGE>
Sender: owner-linux-xfs@xxxxxxxxxxx
On Tue, 2001-12-11 at 02:23, Matthijs van der Klip wrote:
> >Hmmm, I'll bet the kernels we distribute do not have DMAPI built-in.  Do
> you
> >see a /proc/fs/xfs/dmapi on your system while your kernel is running?  If
> not,
> >you'll have to build a kernel.
> 
> Hmmm... no /proc/fs/xfs/dmapi here, but why is the dmapi rpm even required
> then?
> I think I'll get some source rpms and build some binary ones anew.
> 
> Does anyone on the list know why dmapi isn't included in the Release 1.0.2
> kernel
> rpms? Will this be fixed in future releases?

At the time there was a bug which caused an infinite loop in the kernel
when dmapi was turned on. Since dmapi did not have any real application
at the time, we decided to turn it off. Later kernels fix this and it
is safe to turn it on. If you turn it on in the 1.0.2 kernel rpms you
will probably hit the bug.

I am not sure about user space dependencies - but the irix xfsdump
and restore programs are aware of dmapi filesystems and can be used
to back them up.

Steve


> 
> 
> Best regards,
> 
> Matthijs van der Klip
> NOS - Dutch Public Broadcasting Organisation
> 
> 
> [[HTML alternate version deleted]]
-- 

Steve Lord                                      voice: +1-651-683-3511
Principal Engineer, Filesystem Software         email: lord@xxxxxxx


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