We have received lots of incidents where file system was showing unavailable even if they are showing mounted on the server and we find the entry in etc/fstab.
This is caused by a timeout:
Nov 28 10:31:17:146  cdm: get_Disk_IO_Samples: Skipping blank (or incomplete) line Nov 28 10:31:17:242  cdm: safe_statvfs:Probably Timeout occured for /opt/xxx_xxxxxx, error 2 Nov 28 10:31:17:242  cdm: Failed to get FsUsage for /opt/xxx_xxxxxx
Release : 8.4
Component : UIM -CDM