Ross, Nate, Tony, thanks for your promptly response On Mon, Jul 28, 2008 at 2:51 PM, nate <centos at linuxpowered.net> 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 at 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 at 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 at 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 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 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? Thanks again -- Eduardo Grosclaude Universidad Nacional del Comahue Neuquen, Argentina -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos/attachments/20080728/9c5d8480/attachment-0005.html>