On 1/14/11 5:10 AM, Darren Kenny wrote:
Hi Drew,
Interesting way of looking at things - but - while this does work, there is a
gap in there, where you can have multiple<vdevs> under the<zpool>:
<zpool>
<vdev redundency="mirror">
<device_ref .. />
<device_ref .. />
</vdev>
<vdev redundency="mirror">
<device_ref .. />
<device_ref .. />
</vdev>
<vdev redundency="spare">
<device_ref .. />
<device_ref .. />
</vdev>
</zpool>
Unfortunately I think this would be too difficult to achieve using your
approach.
Let me think on this a bit. When we meet later today, we can kick this
around. That is a problem with my current idea though. Maybe
additional redundancy attributes could be used. I don't know.
Ultimately what you are proposing here is not that dissimilar to the idea of
adding an 'id' attribute - just yours is called 'rpool' ;)
I totally agree.
I still think that the way of defining the physical and logical devices
separately, is more 'natural' and like how an admin might do it using
command-lines, e.g.:
fdisk ....
format ...
zpool create ...
I do understand that the notion of references isn't ideal, but I think it's
easily understood once explained& documented.
This is really where I was going with my suggestion. I look at it as
the logical devices require the physical to be set up beforehand, so why
not set attributes during physical creation for later logical creation.
-Drew
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