VSWITCH is the answer, of course. 

But that's the next great leap through our company Internet Security 
group.  Baby steps first.  We have OSA rdevs available, and the need for 
three new zLinux guests in a hurry, of course. 

VSWITCH is already being planned, but it has a longer timeline since it 
involves moving the cheese a great many more recalcitrant people.

So... the question remains (if a reply from Alan is not already winding 
its way through the net at this late hour on the east coast)

Mike Walter 
Hewitt Associates 
Any opinions expressed herein are mine alone and do not necessarily 
represent the opinions or policies of Hewitt Associates.




"Marcy Cortes" <[EMAIL PROTECTED]> 

Sent by: "The IBM z/VM Operating System" <[email protected]>
04/23/2008 11:29 PM
Please respond to
"The IBM z/VM Operating System" <[email protected]>



To
[email protected]
cc

Subject
Re: OSA rdev and vdev requirements for Linux guests.






Wait, what are you doing attaching osa's to Linux?
VSWITCH!

Seriously, I think you use a lot more storage on the Linux guest and
make him less likely to be idle.

Marcy Cortes 

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-----Original Message-----
From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On
Behalf Of Mike Walter
Sent: Wednesday, April 23, 2008 9:25 PM
To: [email protected]
Subject: [IBMVM] OSA rdev and vdev requirements for Linux guests.

Way back when, in the olden days, I seem to remember that the first OSA
address of a triplet used by Linux guests had to be an even address.

But then there are also vague memories of more recent information that
as long as the first OSA vdev of a triplet seen by a guest is even, it
does not matter if its rdev is odd.  Is that true, or have I been
sneaking sips of Adam's cough medicine?

If the first vdev of the triplet being even is all that matters, do all
the rdevs have to be in ascending sequential order? 

Or could we harvest all those lone, odd-numbered OSA rdevs?  E.g. "7000,
7001, 7002" used, reclaim the abandoned 7003 rdev to be assigned as an
even-numbered vdev, "7004, 7005, 7006" used, reclaim the abandoned 7007
rdev to be assigned as an even-numbered vdev, etc.)?

And... where is this documented that I obviously overlooked?  Of course
if a restriction were removed, where would one find it documented except
in old manuals and folklore?  :-)

Mike Walter
Hewitt Associates
Any opinions expressed herein are mine alone and do not necessarily
represent the opinions or policies of Hewitt Associates.








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