Hi,
In a GI 12.1.0.2 cluster on Oracle Linux 7.1 I'm using an NFS mount to store an ASM disk that has OCR+VotingFiles+MGMTDB
The fstab paraemters are the following:
nfs-server:/STORE/ASM_DISKS /NFS_DISKS nfs rw,bg,hard,intr,rsize=32768,wsize=32768,tcp,noac,vers=3,timeo=600 0 0
Problem: if I do graceful shutdown on a node without stopping CRS on it then the node hangs. It is stuck trying to access the NFS server after the network is down.
It looks like the initial unmount of the NFS share fails because ASM is still holding its file open. And later it is too late because the network is down already.
Does anyone know of an official way to configure NFS share for ASM disks on OL/Redhat 7 ?
Does it require a different set of mount parameters? Or does it require manually configuring a systemd dependency of OHASD service on the NFS mount, so that OHASD stops and ASM disk files are closed before the NFS share is unmounted?