[CentOS] Duplicate PV on HW RAID?

Eduardo Grosclaude eduardo.grosclaude at gmail.com
Mon Jul 28 17:31:55 UTC 2008


Hello,
My "hardware" (?) RAID system seems to work but says "duplicate PV" while
booting, I don't think I was reading them before. Any clues will be
appreciated.
>From what I recall:
1) RAID 1 was setup (using firmware setup program) on a machine with Intel
S3200 SHV Server Board.
2) Installed Centos 5.1, default LVM style. Anaconda saw a single 500GB disk
so I assumed this was a true hardware RAID system. Am I wrong here?
3) Then wanted to reduce LogVol00 so as to make room for a new, data only
filesystem on its own LV. Started by booting with rescue CD, lvscanned the
disk, lvchanged -a y. Intended to resize root filesystem with resize2fs. Was
asked to fsck, which I did (by the way, getting many errors). Fixed them all
(fingers crossed), fsck again said ok. Then resize2fs worked happily.
4) Rebooted the installed system. Now "Duplicate PV" shows at boot. Honestly
I don't know whether this was being displayed before (this is an inherited
server). This message shows at the screen but no record of it is kept on any
log file.
5) Everything seems to work well anyway. I created a new LV as I wished,
just this message keeps me thinking...

Should I care? Should I fix it? Is it a true RAID board? Should I be better
off going software-RAID 1?

lspci says
00:00.0 Host bridge: Intel Corporation Server DRAM Controller
00:1a.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #4 (rev 02)
00:1a.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #5 (rev 02)
00:1a.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #6 (rev 02)
00:1a.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI
Controller #2 (rev 02)
00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port
1 (rev 02)
00:1c.4 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port
5 (rev 02)
00:1d.0 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #1 (rev 02)
00:1d.1 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #2 (rev 02)
00:1d.2 USB Controller: Intel Corporation 82801I (ICH9 Family) USB UHCI
Controller #3 (rev 02)
00:1d.7 USB Controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI
Controller #1 (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 92)
00:1f.0 ISA bridge: Intel Corporation 82801IR (ICH9R) LPC Interface
Controller (rev 02)
00:1f.2 RAID bus controller: Intel Corporation 82801 SATA RAID Controller
(rev 02)
00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev
02)
02:00.0 VGA compatible controller: Matrox Graphics, Inc. MGA G200e [Pilot]
ServerEngines (SEP1) (rev 02)
03:01.0 Ethernet controller: Intel Corporation 82541PI Gigabit Ethernet
Controller (rev 05)
03:02.0 Ethernet controller: Intel Corporation 82541GI Gigabit Ethernet
Controller (rev 05)


Thank you in advance

-- 
Eduardo Grosclaude
Universidad Nacional del Comahue
Neuquen, Argentina
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