Jim,
> We would consider it VERY important.
thanks for your feedback.
>Since PAV is not going to be turned off (great z/OS performance
>improvements), Linux needs to be PAV tolerant, even if it does not take
>advantage of it.
Linux is PAV tolerant. It just won't be able operating any alias devices
in LPAR - if this is all you want/need no further support is required
(you may get some annoying messages during IPL/boot about devices becoming
not operational, though :-(
So is Linux exploitation beyond toleration "very important to you" ? If
yes, do you have more details about your workload profile ? What I'm
interested in is to learn what limitations people observe exploiting
Linux striping support that could potentially be overcome by additional
(or alternative) PAV exploitation.
I'm not looking for constructed scenarios (this is not meant as a
response to your mail, but I perfectly understand those) but real
workload you folks run in your shops.
Thanks and best regards,
Ingo
--
Ingo Adlung,
Linux for zSeries - Architecture & Design
mail: [EMAIL PROTECTED] - phone: +49-7031-16-4263
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| | James Peddycord |
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| | s.ntrs.com> |
| | Sent by: Linux on 390|
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| | 24.06.2003 15:15 |
| | Please respond to |
| | Linux on 390 Port |
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| To: [EMAIL PROTECTED]
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| Subject: Re: [LINUX-390] Parallel Access Volumes with SLES7
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Ingo,
We would consider it VERY important.
All of our DASD is PAV enabled. It was enabled last December. All of the
Linux instances that were already running have been OK, but I have to jump
thru hoops to get a new instance created. I'm also concerned about lack of
support should one of our production instances somehow decide not to boot
because of PAV.
Since PAV is not going to be turned off (great z/OS performance
improvements), Linux needs to be PAV tolerant, even if it does not take
advantage of it.
I'll be pointing our IBM SE to this discussion as well.
Thanks,
Jim
Ingo Adlung wrote:
>>Some time ago, there is a discussion about PAV and Linux/390 in the list.
>>The last thing that i can remember it is Linux/390 can't be loaded from
>>PAV volume. Try search to find details.
>
>We are considering doing a write up how to use PAV under z/VM using LVM
>(requires SLES 8). Under LPAR we currently don't have the necessary Linux
>support in place.
>
>Would be good to hear from you how important you consider it.
>
>Ingo
