[Linux-cluster] GFS volume already mounted or /mnt busy?

[bigendian+gfs at gmail.com]

I had a curios thing happen last night. I have a two-node GFS cluster
configuration that currently has only one node.  After shutting down and
restarting the one node, the I couldn't mount my GFS volume because it was
no longer visible.

The pvdisplay, lvdisplay, and vgdisplay all came up blank.  I was able to
use pvcreate --restorefile and vgcfgrestore to get the volume back.  I then
got the following message when trying to mount the volume:

mount: /dev/etherd/e1.1 already mounted or /gfs busy

I was able to gfs_fsck /dev/etherd/e1.1, but I continue to get this error.
Running strace on the mount command turns up this error:

mount("/dev/etherd/e1.1", "/gfs", "gfs",
MS_MGC_VAL|MS_NOATIME|MS_NODIRATIME, "") = -1 EBUSY (Device or resource
busy)

What could be happening here?

Thanks,
Tom
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