Error while unmounting Acfs moutpoints

Hi,

We are getting below error while shutting down the cluster of 11.2.0.1, Two months we tried to upgrade our clusterware from 11.2.0.1 to 11.2.0.2 . But its failed So we downgrade the our cluster to the same version.

We are using acsf mount points, Which is not getting down with below error.

 [grid@psdb65 ~]$ sudo /bin/umount -t acfs -a

OfsCheckKernelVersion: sts1 0

(NONAME): ACFS-00515: version mismatch:

    11.2.0.2.0 (NONAME) version

    11.2.0.1.0 ACFS kernel version

OfsCheckKernelVersion: sts1 0

(NONAME): ACFS-00515: version mismatch:

    11.2.0.2.0 (NONAME) version

    11.2.0.1.0 ACFS kernel version

[grid@psdb65 ~]$ df -h

Filesystem            Size  Used Avail Use% Mounted on

/dev/sdf1             7.6G  4.0G  3.3G  56% /

/dev/sdf3             4.2G  583M  3.4G  15% /var