Eduardo Grosclaude wrote:
>
> Ross, Nate, Tony, thanks for your promptly response
>
>
> On Mon, Jul 28, 2008 at 2:51 PM, nate <centos@xxxxxxxxxxxxxxxx> wrote:
>
>
> Eduardo Grosclaude wrote:
>
> > 4) Rebooted the installed system. Now "Duplicate PV"
> shows at boot. Honestly
>
>
> To me it sounds likely that the raid controller is shitty and
> is presenting two sets of devices to the OS, one likely being
> the "RAID" device and the other a more generic device(s).
>
> What does 'dmesg' say? Do you see more devices than you think
> you should have on the system?
>
> dmesg says nothing about this, the message only appears at
> console when booting or otherwise using the PVs:
>
> [root@myserver ~]# pvs
> Found duplicate PV 8D7K2wg15HqD0l9HxZCz7QlDfpqJOhXT: using
> /dev/sdb2 not /dev/sda2
> PV VG Fmt Attr PSize PFree
> /dev/sdb2 VolGroup00 lvm2 a- 465,62G 0
>
> [root@myserver ~]# lvs
> Found duplicate PV 8D7K2wg15HqD0l9HxZCz7QlDfpqJOhXT: using
> /dev/sdb2 not /dev/sda2
> LV VG Attr LSize Origin Snap% Move Log Copy%
> LogVol00 VolGroup00 -wi-ao 150,00G
> LogVol01 VolGroup00 -wi-ao 1,94G
> LogVol02 VolGroup00 -wi-ao 313,69G
>
>
> [root@myserver ~]# sfdisk -d
> # tabla de particiones de /dev/sda
> unit: sectors
>
> /dev/sda1 : start= 63, size= 208782, Id=83, bootable
> /dev/sda2 : start= 208845, size=976543155, Id=8e
> /dev/sda3 : start= 0, size= 0, Id= 0
> /dev/sda4 : start= 0, size= 0, Id= 0
> # tabla de particiones de /dev/sdb
> unit: sectors
>
> /dev/sdb1 : start= 63, size= 208782, Id=83, bootable
> /dev/sdb2 : start= 208845, size=976543155, Id=8e
> /dev/sdb3 : start= 0, size= 0, Id= 0
> /dev/sdb4 : start= 0, size= 0, Id= 0
>
> Awful--I expected to see just one device :P
>
> > There might be a disk from an old RAID1 set in there.
> Don't think so, this machine was integrated here with new materials.
>
> Oops... system-config-lvm shows under 'Uninitialized entities':
> /dev/sda
> -> part 1
> -> part 2
> -> unpartitioned space
> /dev/sdb
> -> part 1
> -> unpartitioned space
The sfdisk output looks OK, I think it's just an issue with
system-config-lvm getting confused with the "leaky" sdb.
> These shouldn't be appearing as two discs in the first
> place-- but anaconda said I only had one unit...
> Anyway, why the asymmetry? Did I screw the RAID volume
> somehow? Or did I install plain on sda and this RAID never
> worked as such? :P
I think it's the on board RAID not abstracting the disks as
it should.
> The machine BIOS correctly describes the RAID volume at
> start. Doesn't It smell like fake RAID?
> Should I declare sdb invalid to the firmware program so as to
> force resync?
You could re-try the installation, or, hide /dev/sdb from lvm
using filtering in lvm.conf.
You can reboot with a live cd and run a checksum comparison
on the volumes on each disk to verify if the RAID is working
correctly. Maybe there is a BIOS option to hide drive 2?
If you do a re-install and get the same result then you know
it wasn't a mistake on your part though (unless you make it
again!).
-Ross
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