I am running SLSE11- Linux linux16 #1 SMP 2009-02-28 04:40:21 +0100 s390x s390x s390x GNU/Liinux

zypper update fails with the following message.

Retrieving package filesystem-11.1-3.5.3.s390x (1/932), 50.0 K (0 B unpacked)
Installing: filesystem-11.1-3.5.3 [error]
Installation of filesystem-11.1-3.5.3 failed:
(with --nodeps --force) Error: Subprocess failed. Error: RPM failed: error: unpacking of archive failed on file /mnt: cpio: chown failed - Read-only file system

Abort, retry, ignore? [A/r/i]: a
Problem occured during or after installation or removal of packages:
Installation aborted by user

Please see the above error message for a hint.