LUNs still visible after removal of mapping.

[Robert Campbell the 2nd]

Hi All,

We currently have a strange problem with out Fibre HBAs which I would like your opinion on.

1. Make a volume mapping from the MSA2000 to both the HBAs of the host (due to the Multipulse, we only see one /dev/ device appear after a "hp_rescan -a"
2. Remove the mapping and wait 30 seconds, rescan the HBAs and the LUN is still there!
3. Double-check the MSA, no mapping there.
4. Rescan several times more, LUN is still there.
5. Reboot the host, after a rescan LUN is now gone. Weird or what?

As you can see, this is very disconcerting, the MSA says the volume is not mapped (and I beleive it is not mapped) and only after a reboot does the HBA/host (Linux 5.2) concur.

Some version numbers for you perusal:
# ./adapter_info -v
/sys/class/scsi_host/host0:
Driver version = 8.2.0.22_p1
Adapter state = LINKUP
Adapter model = A8002A
WWNN = 20000000c97e8ac7
WWPN = 10000000c97e8ac7
Firmware version = 2.50A6 (W2F2.50A6), sli-2
Queue depth = 16
NODEV timeout = 10
MultiPulse version = 2.2.39
/sys/class/scsi_host/host1:
Driver version = 8.2.0.22_p1
Adapter state = LINKUP
Adapter model = A8002A
WWNN = 20000000c97eb634
WWPN = 10000000c97eb634
Firmware version = 2.50A6 (W2F2.50A6), sli-2
Queue depth = 16
NODEV timeout = 10
MultiPulse version = 2.2.39