On 3 January 2013 02:49, Stephen Powell wrote:
> 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 logic
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
>>> 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
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 th
On Mon, 31 Dec 2012 12:18:30 -0500 (EST), Bobby Bauer 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?
>
> Wher
Assuming I understand your question, i.e. "what does use_diag control?"
As Obi-Wan would say, "Use the Source, Luke!"
http://www.cs.fsu.edu/~baker/devices/lxr/http/source/linux/drivers/s390/block/dasd_devmap.c
818
<http://www.cs.fsu.edu/~baker/devices/lxr/http/source/l
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 have a USE_DIAG coded in my zipl.conf.
Goggling around I also
