I have successfully "drained" a page volume in the past, but as stated earlier 
it can take a long time to complete. 


Scott R Wandschneider

Senior Systems Programmer|| Infocrossing, a Wipro Company || 11707 Miracle 
Hills Drive, Omaha, NE, 68154-4457|| ': 402.963.8905 || Ë:847.849.7223  || :: 
[email protected] **Think Green  - Please print responsibly**


-----Original Message-----
From: The IBM z/VM Operating System [mailto:[email protected]] On Behalf 
Of Bill Holder
Sent: Wednesday, March 04, 2009 10:26 AM
To: [email protected]
Subject: Re: Dynamically removing paging volumes

On Tue, 3 Mar 2009 19:39:12 +0100, Kris Buelens <[email protected]> =
wrote:

>Since z/VM V5, the CP nucleus itself no longer has pageable parts.
>

While it's true that CP no longer pages out any parts of the nucleus itself, 
there are CP owned pageable structures that may be paged out on the target 
volume.  The bulk of these are pageable PGMBKs (normal user private space 
PGMBKs, containing the page tables that represent user storage), but there are 
some other pageable structures that are not tied to users, so even if all users 
were logged off, there's no guarantee that paging use on the drained volume 
would drop to zero.  =


- Bill Holder, z/VM Development, IBM Endicott 

Confidentiality Note: This e-mail, including any attachment to it, may contain 
material that is confidential, proprietary, privileged and/or "Protected Health 
Information," within the meaning of the regulations under the Health Insurance 
Portability & Accountability Act as amended.  If it is not clear that you are 
the intended recipient, you are hereby notified that you have received this 
transmittal in error, and any review, dissemination, distribution or copying of 
this e-mail, including any attachment to it, is strictly prohibited. If you 
have received this e-mail in error, please immediately return it to the sender 
and delete it from your system. Thank you.

Reply via email to