command vgchange

[Gabriele FACCHINI]

I have a cluster whith service guard formed by 4 nodes and a package pkg01 whit a vg01 (lun 7 GB xp256). When i destroy this vg to recreate it whit lun 28Gb i can't to make a vgchange -a e vg01 on other nodes different to primary node. The message reported by OS is:
system:/#>vgchange -a e vgoragp
vgchange: Couldn't set the unique id for volume group "vg01":
File exists
What can i do to resolve it?

[Rainer von Bongartz]

first remove this vg on the other nodes by using vgexport

then export this vg (vgexport) on the primary and then
import (vgimport) it on the other boxes.

after this you should be able to activate this vg on all nodes.

[Ravi_8]

Hi,
did your systems(which are on cluster) has MC/ServiceGuard softwate, if not you need to install this. then try vgchange

[Carsten Krege]

It could be possible that /dev/vgoragp and /dev/vg01 have the same minor number for the group device file.

# ls -l /dev/*/group

In this case you need to choose a free minor number (0xMM0000 MM=Minor number 00-ff). If you don't have a duplicate minor number, you should either try to reboot and to retry or to use a different minor number (my theory in this case is that the LVM memory structures were not fully cleaned up and can only freed by reboot or you workaround by choosing a new minor)

Note that minor number of shared VGs must be consistent accross nodes. You might need to vgexport/vgimport on the alternate nodes.

Carsten

[Gabriele FACCHINI]

i have made a vgexport on all nodes , i have made a mknod vith a minor number equal on all nodes and different by other vg and i have made a vgimport.