[Bug 215311] New: Support ATA command passthrough for iSCSI -> SATA

[Bug 215311] New: Support ATA command passthrough for iSCSI -> SATA

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=215311

            Bug ID: 215311
           Summary: Support ATA command passthrough for iSCSI -> SATA
           Product: IO/Storage
           Version: 2.5
    Kernel Version: 5.10.x
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: SCSI
          Assignee: linux-scsi@vger.kernel.org
          Reporter: nfxjfg@googlemail.com
        Regression: No

This would be a nice feature for using smartctl over iSCSI (where the target is
a SATA disk). So far, this seems to be needed in the iSCSI target
implementation or another part of the target's SCSI layer or SATA glue code. I
can actually send ATA passthrough commands (0x85) from a Linux initiator, just
the target rejects them as invalid or unknown.

Hints which subsystem or even source file would handle this would be nice too,
maybe I could attempt a patch (though somewhat unlikely I would succeed).

Does iSCSI+SATA really work by translating SCSI commands to ATA commands? Crazy
world if that's correct.

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