Re: [Qemu-devel] [PATCH] megasas: Update function megasys_scsi_uninit

[Paolo Bonzini]

Il 01/08/2012 00:17, Hannes Reinecke ha scritto:
> Ad 2: no, the SAS address for the devices is _not_ the WWN.
> The WWN is the ID of the LUN, whereas the SAS address is the ID of the
> Target. So to be correct we would need to generate unique SAS addressed
> per target which needs to be different from the WWN.

Oh, that's even easier then, just delete all the get_wwn stuff and use
HBA address + 1 + sdev->id.

Paolo

> However, megasas does not need to present SAS addresses here; we can set
> the interface to PCI-E (instead of SAS) and just use the LUN number.
> Sadly I've yet to figure out the code for PCIE.
> (Doing it correctly involves staring a binary output and figuring the
> meaning of bits. Did I mention I don't have documentation for that beast?)
> That's what's stalled the patch for now.