OS-7795 libdiskmgt doesn't always list all disks

[joyent-automation]

OS-7795 libdiskmgt doesn't always list all disks

This PR was migrated-from-gerrit, https://cr.joyent.us/#/c/6846/.
The raw archive of this CR is here.
See MANTA-4594 for info on Joyent Eng's migration from Gerrit.

CR discussion

@bahamat commented at 2019-08-29T00:18:48

Patch Set 1:

New commits:
commit 67e30b7
try to force clear qnap serial

commit d70a2202e06895503f01e43b8cfef05293f851dd  
OS-7795 qnap tr-004 doesn't present unique serial numbers

@bahamat commented at 2019-08-29T00:38:03

Uploaded patch set 2: Commit message was updated.

@bahamat commented at 2019-08-29T00:38:12

Uploaded patch set 3: Commit message was updated.

@bahamat commented at 2019-08-29T00:38:13

Patch Set 3:

New commits:
commit d965808a58c0ed9803ff255dbb9eae4adc409f4b
3

commit 8ba2431a649d555e6ba2a6dda01687a177a8ba86  
OS-7795 qnap tr-004 doesn't present unique serial numbers

@bahamat commented at 2019-08-29T00:39:00

Uploaded patch set 4: Patch Set 3 was rebased.

@bahamat commented at 2019-08-29T00:39:06

Patch Set 4:

New commits:
commit e61c123bab30db00309711d7d3122790d5cafa86
3

commit b5ded26f61d2f68e9f3b6c3a99b57673b94e373d  
OS-7795 qnap tr-004 doesn't present unique serial numbers

@jjelinek commented at 2019-08-29T12:51:05

Patch Set 4:

(1 comment)

This seems ok, modulo the comment nit.

Patch Set 4 code comments

usr/src/uts/common/io/usb/scsa2usb/scsa2usb.c#1778 @jjelinek

typo