Mount GFS2 disk
 

Hello

I have cluster(CentOS 5.4) with 8 nodes. To cluster attached disk(gfs2) from SAN.
7 nodes mount disk normally. But one node:
[root@n0 ~]# mount LABEL=clus:proj /proj
/sbin/mount.gfs2: /dev/sdm already mounted or /proj busy

Of course disk is not mounted on this node. dmesg and messanges show nothing.
How to find problem?

I ckecked group_tool on problem node(n0 - id=3) and another(n7 - id=8):
[root@n0 /]# group_tool
type level name id state
fence 0 default 00010005 none
[1 2 3 4 5 6 7 8]
gfs 2 proj 00010003 none
[3 7 8]

[root@n7 /]# group_tool
type level name id state
fence 0 default 00010005 none
[1 2 3 4 5 6 7 8]
dlm 1 proj 00010007 none
[7 8]
gfs 2 proj 00010003 none
[3 7 8]

On n7 node(where gfs realy mounted) I see dlm+gfs.
But on n0 node(where gfs not mounted) I see only gfs. May be this is problem? And how to fix it?

Make sure that someone is not in the mount point. I have had this happen when someone will change to a directory and leave themselves in there.

lsof /proj