ghost volume group

[Albert J. Balash]

What is ghost volume group?

[John Poff]

Hi,

Never heard of it. Where did you see it?

My guess would be that it could be an old volume group where the PVs have gone away? Just a guess.

JP

[Steven E. Protter]

Its a volume group that you think you got rid of with a vgreduce command but still shows up in utilities or in this output:

strings /etc/lvmtab

You can get rid of it, if the reduce worked as follows:

mv /etc/lvmtab /etc/lvmtab.old
vgscan -a

SEP

[S.K. Chan]

Ghost VG, ghost LV or whatever you want to call it are due to ghost disk or ghost PV. If you look at your vgdisplay output and if you see that "Curr LV" and "Open LV" does not match OR "Cur PV" and "Act PV" does not match it means you got ghost. Take for instance the unmatched PVs .. this can be caused by ..
1) A physical volume (disk) that is physically removed from the system before it is removed logically (ie from LVM).
2) A hardware disk failure while system is still on-line.

[Jeff Schussele]

Hi Albert,

Not sure what that terms means exactly...

But I'd guess it's a VG that was once on this system & was *physically* removed, but wasn't properly removed from the OS.

Rgds,
Jeff