How to Properly Fix: VG entry in lvmtab but VG Directory is Absent

[Alzhy]

[ /root ]
root@uranus # vgdisplay /dev/master
vgdisplay: "/dev/master/group": not a character device.
vgdisplay: Cannot display volume group "/dev/master".

[ /root ]
root@uranus # ls -l /dev/master
/dev/master not found

[ /root ]
root@uranus # strings /etc/lvmtab|grep master
/dev/master


There are no mounted LVOLS from this VG...

[Pete Randall]

Nelson,

1. mv /etc/lvmtab /etc/lvmtab.old

2. vgscan -a


I think that should straitghten it out.


Pete

[Rita C Workman]

Do you have a mapfile of the /dev/master vg..?
If you do:
...you might try recreating it and then doing a vgimport of the mapfile...

Just a thought,
Rita

[Geoff Wild]

Was this vg removed?

Either vgscan as above, or recreate the vg.

mkdir /dev/master
mknod /dev/master/group c 64 0x480000
vgcreate -s 8 -p 255 /dev/master

then vgexport it:

vgexport /dev/master

That will also remove it from lvmtab.


Rgds...Geoff

[Pete Randall]

Maybe I was mis-interpreting what you wanted. Is the VG supposed to be there? If so, then Rita's got the right idea - you need to vgimport it.

First, recreate the directory and group files.

mkdir /dev/master
mknod /dev/master/group c64 0xNN0000 (NN needs to be a unique minor number)
vgimport -s -m mapfile (if present) /dev/master


Pete

[Alzhy]

Thanks guys.

I am still trying to find out if the VG is supposed to be still on this system. When I de-present one of the component disks from the system as listed in lvmtab (using SecurePath).. it won't allow me saying the LUN is busy...

This environment uses EVA BusinessCopy -- which have been plagued with a variety of problems.

Hopefully all these problems will go away once we switch to VxVM as our volume manager on our EVA 5K LUNs..

[Pete Randall]

How's the Harley?

[Alzhy]

It should be delivered within the week..