If you need to disable Concurrent I/O, unmount the VxFS file system and mount it again without the mount option.
To disable Concurrent I/O on a file system using the mount command
-
Shutdown the DB2 instance.
-
Unmount the file sytem using the umount command.
-
Mount the file system again using the mount command without using the -o cio option.
To disable Concurrent I/O on a DB2 tablespace
-
Use the DB2 file system caching option as follows:
# db2 -v "alter tablespace tablespace_name file system caching"
where tablespace_name is the name of the tablespace for which you are disabling Concurrent I/O.
