Date: Tue, 15 Dec 2015 08:48:56 +0000 From: Hongjiang Zhang <honzhan@microsoft.com> To: "freebsd-scsi@FreeBSD.org" <freebsd-scsi@FreeBSD.org> Subject: Is there a method which can tell a SCSI device is valid or not Message-ID: <b71ed15b6acd45b3b4d097bbc4e7159c@SG2PR3002MB0106.064d.mgd.msft.net>
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I'd like to know whether there is a utility method which can tell a scsi device is perfectly installed or not. Is there a method like "is_scsi_installed(struct scsi_inquiry_data *)"? Background: When I developed storage drivers for hyper-v on windows 10, I found in the windows host tells VM some of the devices status are ok, but in fact such device did not have valid information. For example, "Fixed Uninstalled SPC-3 SCSI device (LUN not supported)" if I print its inq_data. The following code is used to print the inquire data: struct scsi_inquiry_data *inq_data = &(ccb->ccb_h.path->device->inq_data); scsi_print_inquiry(inq_data); The log I collected: Dec 15 11:19:33 honzhan-dev2 kernel: <Msft Virtual Disk 1.0> Fixed Uninstalled SPC-3 SCSI device (LUN not supported) Dec 15 11:19:33 honzhan-dev2 kernel: HV_DEBUG: VMBUS **SCSI_STATUS_OK with invalid SCSI Dec 15 11:19:33 honzhan-dev2 kernel: HV_DEBUG: VMBUS 18: hv_storvsc_on_iocompletion type=0x1f, SPC-3 target=1, lun=0 Dec 15 11:19:33 honzhan-dev2 kernel: <Msft Virtual Disk 1.0> Fixed Uninstalled SPC-3 SCSI device (LUN not supported) Dec 15 11:19:33 honzhan-dev2 kernel: HV_DEBUG: VMBUS **SCSI_STATUS_OK with invalid SCSI Dec 15 11:19:33 honzhan-dev2 kernel: HV_DEBUG: VMBUS create_storvsc_request probe:0 storvsc:1:0 0:0 Dec 15 11:19:33 honzhan-dev2 kernel: <Msft Virtual Disk 1.0> Fixed Uninstalled SPC-3 SCSI device (LUN not supported) Dec 15 11:19:33 honzhan-dev2 kernel: HV_DEBUG: VMBUS XPT_SCSI_IO device->lun_id=ffffffff Dec 15 11:19:33 honzhan-dev2 kernel: HV_DEBUG: VMBUS create_storvsc_request probe:1 storvsc:1:0 1:0 Dec 15 11:19:33 honzhan-dev2 kernel: <Msft Virtual Disk 1.0> Fixed Uninstalled SPC-3 SCSI device (LUN not supported)
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