On 06/22/10 11:50, Keith Mitchell wrote:
On 06/22/10 08:53 AM, Matt Keenan wrote:
On 06/22/10 04:42 PM, Dave Miner wrote:
On 06/22/10 11:36 AM, Matt Keenan wrote:
Dave,
Thanks for the review :
On 06/15/10 05:06 PM, Dave Miner wrote:
Overall a pretty complete spec. A few items:
3.2.1.1 - Section could use some reformatting, as there are bullets
shown as parallel that are actually sub-bullets of a previous one.
Consider using some numbering here, maybe.
Yep, noticed this after I had sent out document, corrected now.
3.2.2.1 - What impact does this have on validation of the new
elements
introduced here?
Xmllint will do the required relaxng syntax checking, any other
validation required will be done within auto_install client code
itself,
manually.
Do you think I should be adding validation values in here ? as
according
to Ethan this file is being obsoleted, and I'd like to limit the
amount
of throw away code written.
No, I don't, just wanted to understand the impact.
3.2.2.4 (last bullet on page 15) - This phrasing is confusing: "Pool
name does not exist. If pool name is specified in manifest, then
this
pool will be overwritten." I'm not sure what to expect - will an
existing, named pool be overwritten automatically?
Yes, if the the manifest contains a user specified pool name of
"my_new_pool", and this pool already exists on the target being
installed to then this pool will be overwritten.
That seems... dangerous. Wouldn't it be better to require a
specific directive to overwrite an existing pool?
Ethan and myself discussed this very issue, and came to the
conclusion that if the user specifically states the pool name they
inherently realize that this pool is going to be destroyed as we only
support the "create" action for "zpool" elements.
Future development iterations could allow for "preserve" actions for
"zpool" elements which would cater for this.
I would normally error on the cautious side and not destroy existing
layouts, however as it is a create action I think this may be the
correct approach. I'm open to persuasion though.
Why would an existing pool need to be destroyed, if it's on a
separate, untouched disk? It's completely possible to have two data
pools with the same name. They just can't both be imported
simultaneously under the same name.
I think the statement is only meant to apply when its the same the
underlying device. I'd agree this bullet could probably use some
clarification.
(Side question: can two pools with the same name really be simultaneously
import now? That wasn't the case before. Does zpool auto-adjust the
second imported pool to a temporary subname or something?)
-ethan
- Keith
Matt
Dave
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