PRIMECLUSTER Global File Services Configuration and Administration Guide 4.1 (Solaris(TM) 10 Operating System)

1.3.3 Area reassignment in case of disk block failure

The GFS Shared File System automatically assigns another disk block to a new meta-data area if a disk block hardware failure occurs. Assignment allows continuous file system processing if a disk failure occurs only on a specific block.

This function only suppresses use of a block where an I/O error has occurred. If a request to use the same block is issued, however, an I/O error may occur again. In the case of an I/O error, the error must be corrected because the response time for that request increases. If block reassignment by such an I/O error occurs, back up the file system first. Then correct the hardware failure by replacing the failed disk with a new one, and restore the backed-up data to recover the file system.