Re: USE_DIAG

2013-01-02 Thread Stephen Powell
On Wed, 02 Jan 2013 11:15:41 -0500 (EST), Mark Post wrote: > > I don't know if using that single partition for an LVM PV would > retain the performance benefits of DIAG 250 or not. I don't know why it wouldn't. I mean, yes, obviously a logical volume involves more overhead than a native partition

Re: USE_DIAG

2013-01-02 Thread Mark Post
>>> On 1/2/2013 at 03:41 AM, Rob van der Heij wrote: > So it's only for FBA devices (that is VDISK and EDEV for > most of us) and it requires that the mod_diag driver is loaded. It can be used for ECKD devices, but they must be in the LDL format, not CDL, or they can be CMS FORMATted and RESERV

Re: USE_DIAG

2013-01-02 Thread Rob van der Heij
On 31 December 2012 18:18, Bauer, Bobby (NIH/CIT) [E] wrote: > Been reading, always a dangerous thing. > In Chapter 25. Configuring an Installed Linux on System z Instance, I see in > zipl.conf, USE_DIAG=0. In dasd.conf I see USE_DIAG=1. What is the difference? > Where do I find these? I don't