On 09/15/2016 10:52 PM, Jason A. Donenfeld wrote: > Hi Martin, > > On Thu, Sep 15, 2016 at 6:07 PM, Martin K. Petersen >> But how do they signal that ATA passthrough is possible? Is there an ATA >> Information VPD page? Is REPORT SUPPORTED OPERATION CODES supported? >> >> We need really solid discovery data before we can entertain enabling >> something like this. > > `sg_opcodes` said invalid request, so I think there isn't REPORT > SUPPORTED OPERATION CODES, and `sg_vpd -p ai` came up illegal too. > > However, sg_sat_identify worked reliably, which means a solid way of > probing this would be to send IDENTIFY DEVICE ATA via SG_ATA_16 or > SG_ATA_12. > > Let me know and I can give you access to the hardware if you're curious. > Sadly, that's not sufficient. linux is not the only provider of an SATL (mpt3sas being the most prominent other one). And while they might support ATA_12/ATA_16, there is no indication that you can pass DSM TRIM that way. Cheers, Hannes -- Dr. Hannes Reinecke zSeries & Storage hare@xxxxxxx +49 911 74053 688 SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg) -- 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
