On a linux server I connect to 5 iscsi disks hosted by a SAN. I have
multipathing setup. On each multipath device I used pvcreate to create
a physical volume with no problems. When I create the 6th disk I get
the following from pvdisplay:
# pvcreate /dev/dm-18
Physical volume "/dev/dm-18" successfully created
# pvdisplay
Found duplicate PV tU6s0t1wfQNQufnOqtN1KGux5JftKJSi: using /dev/sdr
not /dev/sdq
"/dev/dm-18" is a new physical volume of "360.00 GB"
--- NEW Physical volume ---
PV Name /dev/dm-18
VG Name
PV Size 360.00 GB
Allocatable NO
PE Size (KByte) 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID tU6s0t-1wfQ-NQuf-nOqt-N1KG-ux5J-ftKJSi
Here is the output of multipath -ll for that device:
MAILDATA (20000000000000000000b560081b99375) dm-18 CYBERNET,iSAN Vault
[size=360G][features=1 queue_if_no_path][hwhandler=0]
\_ round-robin 0 [prio=0][active]
\_ 71:0:0:0 sdq 65:0 [active][ready]
\_ 72:0:0:0 sdp 8:240 [active][ready]
\_ 73:0:0:0 sdr 65:16 [active][ready]
I have done this with 5 other iscsi multipath disks and had no
problems. When I create a 7th disk I also have no problems with that
disk. The size I use on the 6th disk doesn't seem to matter. I've
tested it with anywhere from 50GB to 360GB and get the error with all
disk sizes.
How can I resolve the "Found duplicate PV" warning/error?
--
James Hammer
[email protected]
312-681-5052
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