Created attachment 1142529 [details]
Error: No usable disks have been found

Description of problem:
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 During installation, When multipathed FC LUN is selected through 'Specialized Storage devices' option, "No usable disks have been found" Error is thrown(see attachment)


Version-Release number of selected component (if applicable):
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13.21.250

How reproducible:
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100%

Steps to Reproduce:
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1. Configure FC LUN for Boot on Emulex adapter(16G) from any IBM/Dell FC Target
2. Mount Rhel6.8 Snap1 image on Lenovo Server(x3650 M5), and proceed with installation(legacy install)
3. Select "Specialized Storage Devices" option and click on Next
4. Upon the next screen, click on "Multipath Devices" tab, the FC lun will be listed, select the FC lun and click "Next"
5. Error "No usable disks have been found" is thrown(see attachment)

Actual results:
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Installer fails to install on Multipathed FC Lun when the lun is selected through "Specialized Storage Devices" option

Expected results:
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Installation should be successful on Multipathed FC Lun, when selected through "Specialized Storage Devices" option, Customer/User will select only this option for SAN device installations

Additional info:
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1. Issue is not reproducible when "Basic Storage devices" option is selected and installation is successful on FC multipathed LUN
2. Observed "multipath.conf" is blacklisting the storage wwids, when the Error is thrown.
3. Issue is not observed on 6.7 GA Version