Sun Cluster 2.2 System Administration Guide

A.1.6.10 Managing UFS Logs

All UFS logs on multihost disks are mirrored. When a submirror fails, it is reported as an errored component. Repair the failure using either metareplace(1M) or metatool(1M).

If the entire mirror that contains the UFS log fails, you must unmount the file system, back up any accessible data, repair the error, repair the file system (using fsck(1M)), and remount the file system.