scsi_dh update

Hi James,

this is the consolidated patchset to update the SCSI device_handler infrastructure. Features are:

- Move device-table matching into the device_handler infrastructure, so that individual drivers don't have to implement it themselves
- Adds a 'dh_state' sysfs attribute for manually attaching device handler to new or unknown disks; this allows to override the internal device tables
- Update the dm-multipath code to attach the device handler specified in the multipath configuration
- Add a cache to speed up lookup of several identical devices
- Update existing EMC, RDAC, and hp_sw device handler to use the new infrastructure
- Add new SPC-3 ALUA device handler
- Add new NetApp device handler

Please apply.

Cheers,

Hannes

Dr. Hannes Reinecke		      zSeries & Storage
[email protected]			      +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: Markus Rex, HRB 16746 (AG Nürnberg)
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Hi James,

[ .. ]

And as a side note: I'm currently working on multiple driver binding, so of course we can convert the device_handler to a proper scsi driver once this is in place. But this is quite tedious and time-consuming work and I'd really
like to see my patch queue reduced :-)

Cheers,

Hannes

Dr. Hannes Reinecke		      zSeries & Storage
[email protected]			      +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: Markus Rex, HRB 16746 (AG Nürnberg)
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