> I'd really like to see iSCSI succeed -- it'd make a very elegant solution
> to some of the device sharing problems we see in mixed z/OS and z/VM
shops
> wrt tape drives.

David, would you mind to elaborate? Do you suggest to use an iSCSI
tape device attached to Linux to do backup of z/VM or z/OS data?
As far as I know, z/OS doesn't support SCSI at all.

Mit freundlichen Grüßen / with kind regards

Martin Peschke

IBM Deutschland Entwicklung GmbH
Linux for zSeries Development
Phone: +49-(0)7031-16-2349


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|         |           David Boyes      |
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  |       Subject:  Re: iSCSI                                                   
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> Has anyone messed with iSCSI on Linux on the mainframe?  Any
> comments or suggestions?

The reference implementation done by Intel will build cleanly on 2.4-based
systems. I haven't tried it on a 2.6 system yet. I've gotten the reference
client on one system to talk to the reference server on another system, but
the only external device we had that spoke iSCSI was on loan, and has long
since gone back to the vendor, so I have no way to test it with an external
gadget.

> The information I've found on the web seems to indicate that
> a) the kernel needs to be changed/updated

You only need to build a new kernel if you plan to try to boot from an
iSCSI
device. Otherwise, you can load it as a module.

>  and  b) iSCSI and
> Linux are close but not quite ready for prime time.

I wouldn't say that, but it does take a bit of configuration expertise to
make it work. It's not a simple setup.

I'd really like to see iSCSI succeed -- it'd make a very elegant solution
to
some of the device sharing problems we see in mixed z/OS and z/VM shops wrt
tape drives.

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