Hi,
We did a fresh installation of ASM on RHEL 6.4. This a stand Grid Infrastructure for a Standalone Server.
The install ran cleanly. We created one disk group called DATA of 5 100GB drives and one disk group called FLASH of 2 100GB drives. We chose the default au_size of 1MB.
After reviewing some notes on this forum we decided to modify the au_size of DATA and FLASH.
We were able to dismount and drop FLASH but not DATA since DATA was in use (I guess by the grid infrastructure).
We decided to go ahead and uninstall since we had no database on the grid infrastructure yet. This a fresh install and we saw no other method to modify the au_size of the original disk group (DATA).
We had to do $GRID_HOME/bin/rootcrs.pl -deconfig -force (as root while the grid infrastructure was running I think)
Then we ran $GRID_HOME/deinstall/deinstall as grid.
Finally we removed the residule files left behind as root to complete this uninstall.
When we attmempted to reinstall grid the drives are showing up as Status "Member" so we are unable to re-install at this point.
Should we use dd to clear off the headers for the ASM drives? # dd if=/dev/zero of=/dev/oracleasm/asm01 bs=1024 count=100
So that we can reuse the drives....
Any advise on re-installing in a better way in the future?
Many thanks in advance,
William