Oracle Linux 7 attached SAN storage file system issue
My this post is focused on the recent issue faced during usage of SAN storage for setting up Oracle SOA Suite 12c in a clustered environment. Below is the summary of the same- I have two VMs, SOAHOST1 & SOAHOST2 for setting up SOA Cluster. I have exposed a SAN storage capacity of 500GB on both VMs. Using fdisk utility in linux, the disk was formatted using the XFS file system with the assumption that Linux 7 uses XFS file system so SAN disk to be used with this VM should also have the same file system. Now I mounted the SAN disk /dev/xvdc on both VMs and able to access the storage from both VMs successfully. Problem Statement- Although the storage was mounted on both VMs but parallel Read/Write was not visible i.e. data written by one VM on SAN was not visible at second VM until the storage is refreshed (by remounting the SAN or restarting the VM) Storage got detached abruptly and causing Input/Output error on the mount point on either one or both VMs. This has cau