Try to get all data in advance (before deactivating the VG).
I  still  can't imagine why the VG will disappear. Try with 'pvscan --cache' to 
redetect the PV.
Afrer all , all VG info is in the PVs' headers and should be visible no matter 
the VG is deactivated or not.

Best Regards,
Strahil NikolovOn Oct 2, 2019 02:08, jeremy_tourvi...@hotmail.com wrote:
>
> "lvs -a" does not list the logical volume I am missing. 
> "lvdisplay -m /dev/gluster_vg1-lvthinpool-tpool_tmeta" does not work either.  
> Error message is: Volume Group xxx not found.  Cannot process volume group 
> xxx." 
>
> I am trying to follow the procedure from 
> https://access.redhat.com/solutions/3251681 
> I am on step #2  Step 2a and 2b work without issue.  Step 2c give me an 
> error.  Here are the values I am using: 
> # lvcreate -L 2G gluster_vg3 --name tmpLV 
> # lvchange -ay gluster_vg3/tmpLV 
> # lvconvert --thinpool gluster_vg1/lvthinpool --poolmetadata 
> gluster_vg3/tmpLV 
>
> VG name mismatch from position arg (gluster_vg1) and option arg (gluster_vg3) 
>
> Do I need to create the LV on the same disk that failed?  (gluster_vg1) 
> Is creating a new LV on (gluster_vg3) ok for this situation?
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