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Differential D11634

fix the installation failure of FreeBSD on Hyper-V GEN2
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Authored by honzhan_microsoft.com on Jul 18 2017, 2:55 AM.
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decui_microsoft.com
sepherosa_gmail.com
howard0su_gmail.com
hrs
Commits
rS321286: hyperv/storvsc: Force SPC3 for CDROM attached.
Summary

Fail to install FreeBSD 11.1 beta or 12-current on Hyper-V GEN2 mode, because the CD/DVD device was detached.

This issue occurs if CD/DVD was attached on 2nd SCSI controller or if there is no HDD attached before the CD/DVD slot.
The root cause is Hyper-V CD/DVD simulation set a unknown version number (0) for INQUIRY cmd.
The fix here manually sets the version number to SPC-3 in order to let SCSI CAM continue to probe the device with "REPORTLUN" commands.

See the bug https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=220790

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rS FreeBSD src repository - subversion
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head/
sys/
dev/
hyperv/
storvsc/
19 lines

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head/sys/dev/hyperv/storvsc/hv_storvsc_drv_freebsd.c

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