I have weird problem when I start and stop HAS. File system get's into state, where it does not umount. So filesystem where grid software is running can't be umounted on boot. 9Is there something I do wrong, or don't do right.
I have fresh install of latest 64-bit UEK2 kernel (2.6.39-400.109.1.el6uek.x86) and Oracle 188.8.131.52 Grid Infrastructure for standalone server. I Installed patch p12983005 (112036_Linux-x86-64) to get ACFS support for kernel. When I start HAS and ASM, file system does not umount anymore. Here's steps. Example is from local disk, but I have same problem with LUN from SAN. I thought it might have something to do with SAN and multipath, but SAN is not to blame cos same happens with local disk. Don't know why local disk seem be mapped by multipath in fstab.
1. Mount fs
[root@SERVER ~]# mount -t ext4 /dev/mapper/vg_SERVER-lv_app /u01
2. Start HAS
[grid@SERVER ~]$ crsctl start has
CRS-4123: Oracle High Availability Services has been started.
3. Stop HAS
[grid@SERVER ~]$ crsctl stop has
CRS-2791: Starting shutdown of Oracle High Availability Services-managed resources on 'SERVER'
CRS-2673: Attempting to stop 'ora.cssd' on 'SERVER'
CRS-2673: Attempting to stop 'ora.LISTENER.lsnr' on 'SERVER'
CRS-2677: Stop of 'ora.cssd' on 'SERVER' succeeded
CRS-2677: Stop of 'ora.LISTENER.lsnr' on 'SERVER' succeeded
CRS-2673: Attempting to stop 'ora.evmd' on 'SERVER'
CRS-2677: Stop of 'ora.evmd' on 'SERVER' succeeded
CRS-2793: Shutdown of Oracle High Availability Services-managed resources on 'SERVER' has completed
CRS-4133: Oracle High Availability Services has been stopped.
4. Try umount
[root@SERVER ~]# umount /u01
umount: /u01: device is busy.
(In some cases useful info about processes that use
the device is found by lsof(8) or fuser(1))
[root@SERVER ~]# fuser /u01
[root@SERVER ~]# lsof |grep /u01
Neither of fuser or lsof returns nothing.
This and the fact that ACFS cannon't be mounted on boot, get's me wondering should I use ASM and Oracle Restart at all at this point. Initial reason is that in future this is likely going to be part of RAC.