PRIMECLUSTER Global File Services Configuration and Administration Guide 4.2 (Solaris(TM) Operating Environment)

25.1.2 Is the size of the update log area too large?

If a system failure occurs, the GFS Shared File Systems performs high speed file recovery based on the information in the update log area. More specifically, it reads the update log information and reflects the contents of the update log in the meta-data. High speed file recovery depends on the size of the update log area.

If the time allowed for file system recovery is limited, the size of the update log area must be considered.

As a rough guide, assume that five seconds is required for each megabyte of the update log area.

With the standard setting of sfcnewfs(1M), the size of the update log area is limited to 50 megabytes, regardless of the file system size.