pvdisplay /dev/sda Found duplicate PV, and multipath OK

[jpmartin]

Hi,

a Red-Hat 5.2 server was running with a LUN mapped on an EVA4000, but without multipathd daemon started, and i got this message giving always the /dev/sdd active:

[root@srvora ~]# pvdisplay /dev/sdd
Found duplicate PV viOaYHfdtEoHqkndf4gFI9VIBzKm7vEj: using /dev/sda not /dev/sdd
Found duplicate PV viOaYHfdtEoHqkndf4gFI9VIBzKm7vEj: using /dev/sdb not /dev/sda
Found duplicate PV viOaYHfdtEoHqkndf4gFI9VIBzKm7vEj: using /dev/sdc not /dev/sdb
Found duplicate PV viOaYHfdtEoHqkndf4gFI9VIBzKm7vEj: using /dev/sdd not /dev/sdc
--- Physical volume ---
PV Name /dev/sdd
VG Name datavg
PV Size 600,00 GB / not usable 3,81 MB
Allocatable yes
PE Size (KByte) 4096
Total PE 153599
Free PE 2507
Allocated PE 151092
PV UUID viOaYH-fdtE-oHqk-ndf4-gFI9-VIBz-Km7vEj

[root@srvora ~]# pvdisplay /dev/sda
Found duplicate PV viOaYHfdtEoHqkndf4gFI9VIBzKm7vEj: using /dev/sdb not /dev/sda
Found duplicate PV viOaYHfdtEoHqkndf4gFI9VIBzKm7vEj: using /dev/sdc not /dev/sdb
Found duplicate PV viOaYHfdtEoHqkndf4gFI9VIBzKm7vEj: using /dev/sdd not /dev/sdc
--- Physical volume ---
PV Name /dev/sdd
VG Name datavg
PV Size 600,00 GB / not usable 3,81 MB
Allocatable yes
PE Size (KByte) 4096
Total PE 153599
Free PE 2507
Allocated PE 151092
PV UUID viOaYH-fdtE-oHqk-ndf4-gFI9-VIBz-Km7vEj

I installed HP Device Mapper 4.4, then started multipath daemon, and the output of the multipath -ll command give 4 paths OK, but i got always the message above with the pvdisplay command.

then i reboot and the sanme behavior

Is there a workaround to it?

[jpmartin]

The multipath output with two HBAs connected on an EVA4000 running 6.220

[multipath -ll
mpath0 (3600508b4001079620000b000003a0000) dm-2 HP,HSV200
[size=600G][features=1 queue_if_no_path][hwhandler=0]
\_ round-robin 0 [prio=100][active]
\_ 0:0:1:1 sdb 8:16 [active][ready]
\_ 1:0:1:1 sdd 8:48 [active][ready]
\_ round-robin 0 [prio=20][enabled]
\_ 0:0:0:1 sda 8:0 [active][ready]
\_ 1:0:0:1 sdc 8:32 [active][ready]