Error from cmcheckconf

[Terrence]

I'm getting this error from cmcheckconf on my cluster file.

Begin cluster verification...
Warning: Volume group /dev/vg01 is configured differently on node carlo than
on node monte
Warning: Volume group /dev/vg01 is configured differently on node monte than
on node carlo

I already did a vgexport with map files to synchronize the volume groups. The only thing I can think of is that a strings /etc/lvmtab shows that while all the correct device files are in the right volume groups, they appear in a slightly different order on monte than carlo. Is this perhaps a false error?

[skt_skt]

make sure the VG is clutser aware on both the nodes.

[skt_skt]

use same min number(minor number slection would be limited to "kmtune -q maxvg"

[Stephen Doud · Accepted solution]

using 'strings' on BOTH servers, check how many disks are listed in lvmtab. Are they different? If not, how did you create vg01 entries for each node? Did you vgcreate the VG on one node and vgimport it into the other, or did you vgcreate vg01 on the 2nd node using the same disks?

The Warning typically results from a difference in the number of disks listed in lvmtab, between nodes. Often, admins vgcreate a VG on one node but forget to include the PVlinks in lvmtab on that node.
Then, when vgimporting the VG using a map file with the VGID at the top, LVM locates and loads all the PVlinks into lvmtab.
Thus, the primary node has fewer links, which causes the discrepancy.

[whiz_kid]

its just a warning, u can still continue with cmapplyconf and cmrunconf.

I guess even if the vg is activated in one of the nodes, cluster will see it as configured differently and could throw this warning.

[Prashanth.D.S]

Hi terrence,

As Stephen mentioned the cause is due to

One node does not have a pvlink path configured for a shared disk..

Compare the #strings /etc/lvmtab ouput of both servers and check if both are same if not you may have to take necessary action to make them alike.

Best Regards,
Prashanth