Martin, There is mention of SATA port selectors in the SAS spec (optional functionality in a SAS expander I think) but no mention of SATA port multipliers. The reason might be that a SAS expander already includes the functionality of a SATA port multiplier. The "ATA architectural notes" in Annex J of sas2r16.pdf found at www.t10.org might help. Doug Gilbert Martin Scholl wrote:
Hello all, [disclaimer: what follows is probably a really stupid idea after all.] We would like to use a LSI SAS 1068E board with Sil3726 SATA port replicators. This obviously "fails" in that only 1 disk out of the 5 connected is actually visible. I found, if SATA drivers are to support a port multiplier, they inhert from sata_pmp_port_ops. Is an analog infrastructure available for the sas-based HBAs to support SATA port multipliers? (BTW is such a setup actually supported form a protocol point of view?) I'm not a regular kernel hacker, so I cannot really help you in getting quality sata mpm support (if possible after all) into the sas drivers. What I can definitely offer is my time and will to test the driver modifications you would send me. Martin -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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