topic Re: Odd LVM Error in Operating System - HP-UX

Odd LVM Error

Craig Johnson_1 — Fri, 09 Aug 2013 16:28:48 GMT

Trying to expand an volume group, but we are seeing this weird error every time we run any LVM command:

# vgdisplay -v vg05

Could not open the LVM device file /dev/lvm_private/lvm .
open: Permission denied

...

The only other reference to this I found via Google was on this site, which was not answered, and stated that the command needed to be run as root. We are running as root.

The file /dev/lvm_private/lvm exists and has the same permissions as on other servers were we don't see the error.

Any help is greatly appreciated.

Re: Odd LVM Error

Craig Johnson_1 — Fri, 09 Aug 2013 17:36:50 GMT

OK... server was rebooted. It won't come up. Mounts root filesystem and hangs.

Re: Odd LVM Error

Robert_Jewell — Fri, 09 Aug 2013 20:53:37 GMT

Reboot again, this time into LVM Maintenance Mode?

From here you can at least try working with VG05 to see what problems you continue to have.

-Bob

Re: Odd LVM Error

Bill Hassell — Sat, 10 Aug 2013 23:55:34 GMT

Check dmesg and syslog.log for possible error messages.

Is this a straight server or a vPar or IVM partition?

What's the model of the server, HP-UX version, and the storage for vg05.

Re: Odd LVM Error

Craig Johnson_1 — Mon, 12 Aug 2013 13:57:32 GMT

OK... what it turned out to be was even more bizarre than I imagined.

Apparently, a Progress installation or rogue chown had changed the UID:GID ownershp on the entire /usr/bin directory (and others), so many of the lvm commands weren't owned by root:sys. This is why we saw the odd permissions error.

The system finally rebooted, but nothing was working as expected. A lot of manual chowning following by several swverify's and one more reboot resolved the issue.

Ugh.