AIX 6.1 allows you to mount a JFS2 filesystem without logging. This can increase performance by not requiring the FS to write metadata or log details. You could probably benefit by using this feature on temporary non-critical filesystems such as frequently used tmp space or a backup/restore tmp type of filesystem. With using this feature, you should assume that if the machine were to crash or you have other system related issues, you could potentially lose the entire non-logging filesystem.

If you still feel you can use this feature, you can mount by using the following:

To mount on the fly:

mount -o log=NULL /testfs

You will need to modify /etc/filesystems in order to make this change persistent across boots.

This entry was posted on Wednesday, December 26th, 2007 and is filed under AIX 6.1, Various HOWTOs. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.