Mounting Filesystems with Concurrent I/O

[dial8d]

Ive not used concurrent I/O before, so i just want to check what im doing is correct.

I have a system being built with Oracle 10g & SAP ECC6.0.

I have laid out the filesystems as below, and have mounted the oracle data, archive, redo, mirror filesystems as namefs with cio.

The parent /oracle filesystem is moounted normally, so that binaries and other non cio files do not use CIO, only the specific filesysystems mounted with namefs.

/dev/oracle_lv /oracle jfs2 Oct 31 11:44 rw,log=/dev/loglv01
/oracle/P00/sapdata1 /oracle/P00/sapdata1 namefs Oct 31 14:07 rw,cio
/oracle/P00/sapdata2 /oracle/P00/sapdata2 namefs Oct 31 14:07 rw,cio
/oracle/P00/sapdata3 /oracle/P00/sapdata3 namefs Oct 31 14:07 rw,cio
/oracle/P00/sapdata4 /oracle/P00/sapdata4 namefs Oct 31 14:08 rw,cio
/oracle/P00/origlogA /oracle/P00/origlogA namefs Oct 31 14:09 rw,cio
/oracle/P00/origlogB /oracle/P00/origlogB namefs Oct 31 14:09 rw,cio
/oracle/P00/mirrlogA /oracle/P00/mirrlogA namefs Oct 31 14:10 rw,cio
/oracle/P00/mirrlogB /oracle/P00/mirrlogB namefs Oct 31 14:10 rw,cio
/oracle/P00/oraarch /oracle/P00/oraarch namefs Oct 31 14:10 rw,cio

Also, is there any way to configure so that the namefs mounts are mounted with the mount group ?

Cheers

Alex

 

[axelsche]

Hi Alex,

try this:

for i in $(lsfs | grep namefs | awk '{ print $3 }'); do chfs -a type=yourtype $i;done

after that you can mount/umount your namefs filesystems with
#mount -t yourtype
#umount -t yourtype

HTH
Axel

 

[dial8d]

Hi, thanks for the suggestion, but i dont think that will work.

The namefs mounts are not filesystems. They are overmounts of subdirectories of /oracle.

Only /oracle is an actual filesystem.