Formatting the files with OCFS2
Note: Here we will
only format the files where we will keep our OCR, CRS and ASMfile shared files.
We will use ASMlibs for all other data files (which we will cover in the next
Note2: Unlike other
operations, do this ONLY on ONE NODE, it propogates the changes to all nodes.
Here you get to pick the files which we
partitioned with fdisk:
Yes and formatting:
After formatting , you will need to mount the
disks on ALL nodes!
I did eventually end up adding the third (for
my spasmfile), I just don't know why I didn't see it before, during formatting.
Configure OCFS to automatically mount on startup
Edit your /etc/fstab file like this:
Check it by typing "mount":
Note: Note that _netdev mount
option. It is essential for OCFS2. It basically means that the volume must be
mounted after the network is started and dismounted before the network is shutdown.
Also do chkconfig --list o2cb to see the startup options.
How about permissions?
Do the following (that chkconfig command is
illustrated for the above mentioned instruction:
Here we took
a good look at OCFS2 and how it works. We formatted our raw devices with OCFS2
and mounted them on all nodes. We made adjustments to cope with the startup
during system startup. In our next article, we will pick up the trail and go
ahead with ASMlib installation and setup.
See All Articles by Columnist Tarry Singh