Re: [Qemu-devel] [PATCH][v7] megasas: LSI Megaraid SAS emulation

[Christoph Hellwig]

I've mentioned this a few times before, but just to make sure it's not
lost:

This is a really bad idea for adding to qemu.  It's not a controller that
actually speaks a plain SCSI protocol to disks, but a RAID controller, that
has it's own command set for data plan operation, and minimal support for
a few SCSI CDBs around it.  I also supports passthrough channels for
CDROMs and other periphals, but using those with disks is not recommended
by LSI, thus explicitly disabled in most drivers and most certainly not
tested.  So it fits the qemu model, especially if using scsi-generic
undeneath pretty badly and I don't think it helps us in practice.