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[Fabio A. Guimaraes]

I have installed in my V2500 the operating system HP-UX/64. I have tried to configure the Storage Works from Compaq, but when I execute the command "vgextend" to make alternate path, occur a error message:

[pollux]/# vgextend /dev/pollux08 /dev/dsk/c8t2d0
Volume group "/dev/pollux08" has been successfully extended.
vgcfgbackup: Unable to read the physical volume.: Device busy
vgcfgbackup: Invalid LVMREC on Physical Volume /dev/rdsk/c7t2d0

Thanks.

[CHRIS_ANORUO]

Run vgscan -a

[Alan Riggs]

It might indeed be a problem with your lvmtab. Compare strings /etc/lvmtab with what you expect from the VG. Is there any discrepancy? If so, move lvmtab out of the way and run vgscan -av.

If that does not help, try doing a pvdisplay on the volume which is reporting invalid LVMREC. Does that command fail also?

[Manju Kampli]

it looks like the volume group information of "pollux08" has been corrupted. This may be because of two reasons:

The disk c7t2d0 has been removed from the system with out reducing the volume group OR the disk would have been failed and hence the system is not able to read any information from this.

try doing" diskinfo /dev/rdsk/c7t2d0" and also "pvdisplay "/dev/dsk/c7t2d0" and see if you get any useful info from it.
If disk info fails, then I would say, the disk doesn exist on the system any more.

if you want to correct this run" vgscan -av" this command will go thro all the disks present currently on the system and create a new /etc/lvmtab file


pollux08
c7t2d0