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Hello shivamerla1,
Because there is no Nimble Storage in our lab, could you help provide test result once the package is available?
thanks!

Multipath now supports an optional extension to the reservation_key parameter. You can now set reservation_key to "<key>:aptpl".  This will inform multipathd to set the APTPL bit when registering keys on paths, when they come back up. For this to work correctly, you must also set --param-aptpl when using mpathpersist to register the key. If you set reservation_key to "file", multipath will automatically track which devices need the APTPL bit set by multipathd, depending on which devices you register keys with using the --param-aptpl option
for mpathpersist.

Hi shivamerla1,
Could you test if the new option works well on Nimble Storage? 
Thanks in advance!

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2018:3236