CIO in AIX

Hi,
I'm reading AIX documentation :

Examples
1.To list the mounted file systems, enter: 

mountThis command produces output similar to the following: 

node   mounted          mounted over  vfs    date              options   
----   -------          ------------ ---  ------------   -------------------
       /dev/hd0         /            jfs   Dec 17 08:04   rw, log  =/dev/hd8
       /dev/hd3         /tmp         jfs   Dec 17 08:04   rw, log  =/dev/hd8
       /dev/hd1         /home        jfs   Dec 17 08:06   rw, log  =/dev/hd8
       /dev/hd2         /usr         jfs   Dec 17 08:06   rw, log  =/dev/hd8
sue    /home/local/src  /usr/code    nfs   Dec 17 08:06   ro, log  =/dev/hd8

Which value in options column show that FS is in CIO or not ?

Thank you.

cio does (or would if it was set).

rw,cio,log=/dev/hd8

Thank you.