RHEL7.9 : boot from SAN over fnic fails to boot off PowerStore storage

Issue

• Timeouts and path failures and because it is SAN boot we cannot boot.

sd 0:0:1:0: [sdbx] Synchronize Cache(10) failed: Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
sd 0:0:0:0: [sda] Synchronize Cache(10) failed: Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
sd 0:0:0:2: [sdb] Synchronize Cache(10) failed: Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
sd 0:0:0:5: [sdc] Synchronize Cache(10) failed: Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
sd 0:0:0:3: [sdd] Synchronize Cache(10) failed: Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
....
device-mapper: multipath: Failing path 70:240.
device-mapper: multipath: Failing path 71:16.
device-mapper: multipath: Failing path 66:192.
device-mapper: multipath: Failing path 71:176.
device-mapper: multipath: Failing path 66:16.
....
kernel: sd 0:0:1:0: alua: supports implicit TPGS
kernel: sd 0:0:1:0: alua: device naa.68ccf098001afe63c741db11ff8ceda2 port group 2 rel port 31
kernel: sd 0:0:1:0: alua: port group 02 state N non-preferred supports tolUsNA
kernel: sd 0:0:1:1: alua: Detached
kernel: sd 0:0:1:1: [sdfu] Synchronizing SCSI cache
kernel: sd 0:0:1:1: [sdfu] Synchronize Cache(10) failed: Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
kernel: sd 0:0:1:1: [sdfu] Sense Key : Illegal Request [current] 
kernel: sd 0:0:1:1: [sdfu] Add. Sense: Logical unit not supported
....
kernel: scsi 7:0:8:0: alua: supports implicit TPGS
kernel: scsi 7:0:8:0: alua: device naa.68ccf098001afe63c741db11ff8ceda2 port group 1 rel port 23
kernel: scsi 7:0:8:0: alua: Attached
kernel: sd 7:0:8:0: Power-on or device reset occurred
....
kernel:  rport-6:0-7: blocked FC remote port time out: removing target and saving binding
kernel:  rport-7:0-6: blocked FC remote port time out: removing target and saving binding
kernel:  rport-7:0-1: blocked FC remote port time out: removing target and saving binding
kernel: sd 7:0:0:15: rejecting I/O to offline device
....
multipathd[515]: rport-7:0-1: failed to set fast_io_fail_tmo to 4294967295, error 22
multipathd[515]: rport-0:0-2: failed to set fast_io_fail_tmo to 4294967295, error 22
multipathd[515]: rport-0:0-1: failed to set fast_io_fail_tmo to 4294967295, error 22
multipathd[515]: rport-7:0-2: failed to set fast_io_fail_tmo to 4294967295, error 22