ESXi Host VMkernel logs shows the Error - "Cannot extend visorfs file /opt/sut/tmp/sutservice_*.log because its ramdisk (sut-tmp) is full"

Products

• VMware vSphere ESXi

Issue/Introduction

• VMkernel Logs shows the below 
  
  YYYY-MM-DD|TT:MM:SS.461Z Wa(180) vmkwarning: cpu0:2099932)WARNING: VisorFSRam: 220: Cannot extend visorfs file /opt/sut/tmp/sutservice_2.log because its ramdisk (sut-tmp) is full.
  YYYY-MM-DD|TT:MM:SS.767Z Wa(180) vmkwarning: cpu0:2099932)WARNING: VisorFSRam: 220: Cannot extend visorfs file /opt/sut/tmp/sutservice_2.log because its ramdisk (sut-tmp) is full.
  YYYY-MM-DD|TT:MM:SS.640Z Wa(180) vmkwarning: cpu0:2099932)WARNING: VisorFSRam: 220: Cannot extend visorfs file /opt/sut/tmp/sutservice_2.log because its ramdisk (sut-tmp) is full.
  YYYY-MM-DD|TT:MM:SS.640Z Wa(180) vmkwarning: cpu0:2099932)WARNING: VisorFSRam: 220: Cannot extend visorfs file /opt/sut/tmp/sutservice_2.log because its ramdisk (sut-tmp) is full.
  YYYY-MM-DD|TT:MM:SS.855Z Wa(180) vmkwarning: cpu0:2099932)WARNING: VisorFSRam: 220: Cannot extend visorfs file /opt/sut/tmp/sutservice_2.log because its ramdisk (sut-tmp) is full.
  YYYY-MM-DD|TT:MM:SS.855Z Wa(180) vmkwarning: cpu0:2099932)WARNING: VisorFSRam: 220: Cannot extend visorfs file /opt/sut/tmp/sutservice_2.log because its ramdisk (sut-tmp) is full.
  YYYY-MM-DD|TT:MM:SS.217Z Wa(180) vmkwarning: cpu9:2099932)WARNING: VisorFSRam: 220: Cannot extend visorfs file /opt/sut/tmp/sutservice_2.log because its ramdisk (sut-tmp) is full.
  YYYY-MM-DD|TT:MM:SS.217Z Wa(180) vmkwarning: cpu9:2099932)WARNING: VisorFSRam: 220: Cannot extend visorfs file /opt/sut/tmp/sutservice_2.log because its ramdisk (sut-tmp) is full.
  YYYY-MM-DD|TT:MM:SS.436Z Wa(180) vmkwarning: cpu2:2099932)WARNING: VisorFSRam: 220: Cannot extend visorfs file /opt/sut/tmp/sutservice_2.log because its ramdisk (sut-tmp) is full.
  YYYY-MM-DD|TT:MM:SS.436Z Wa(180) vmkwarning: cpu2:2099932)WARNING: VisorFSRam: 220: Cannot extend visorfs file /opt/sut/tmp/sutservice_2.log because its ramdisk (sut-tmp) is full.
  
  
• VMkernel Logs also shows 
  
  YYYY-MM-DD|TT:MM:SS.803Z In(182) vmkernel: cpu8:2099932)Admission failure in path: host/system/visorfs/ramdisks/sut-tmp:sut-tmp
  YYYY-MM-DD|TT:MM:SS.803Z In(182) vmkernel: cpu8:2099932)Admission failure in path: host/system/visorfs/ramdisks/sut-tmp:sut-tmp
  YYYY-MM-DD|TT:MM:SS.803Z In(182) vmkernel: cpu8:2099932)Admission failure in path: host/system/visorfs/ramdisks/sut-tmp:sut-tmp
  YYYY-MM-DD|TT:MM:SS.803Z In(182) vmkernel: cpu8:2099932)Admission failure in path: host/system/visorfs/ramdisks/sut-tmp:sut-tmp
  YYYY-MM-DD|TT:MM:SS.803Z In(182) vmkernel: cpu8:2099932)Admission failure in path: host/system/visorfs/ramdisks/sut-tmp:sut-tmp
  YYYY-MM-DD|TT:MM:SS.803Z In(182) vmkernel: cpu8:2099932)Admission failure in path: host/system/visorfs/ramdisks/sut-tmp:sut-tmp
  YYYY-MM-DD|TT:MM:SS.803Z In(182) vmkernel: cpu8:2099932)Admission failure in path: host/system/visorfs/ramdisks/sut-tmp:sut-tmp
  YYYY-MM-DD|TT:MM:SS.803Z In(182) vmkernel: cpu8:2099932)Admission failure in path: host/system/visorfs/ramdisks/sut-tmp:sut-tmp

Environment

• ESXi running HPE Hardware 

Cause

Smart Update Tools Repository (SUT)

• Smart Update Tools for Linux (SUT) is an application which enables firmware and software deployment via the iLO management network using the server's local administrator credentials. SUT can run as a service when working with HPE OneView managed servers or in an On Demand mode
  
  
• Smart Update Tools for VMware ESXi (SUT) is an application which enables remote firmware and software deployment to HPE OneView managed servers running supported VMware ESXi operating systems via the iLO management network using the server's local administrator credentials
  HPE Document on (SUT)
  
  
• This "sutservice" file fills up the space of the RAM disk and hence reporting the error on the VMkernel logs

Resolution

Contact HPE Hardware vendor for more information and further assistance. 

Workaround:

• Manually remove the files "/opt/sut/tmp/sutservice_2.log" to clear some space.
  Command - rm /opt/sut/tmp/sutservice_2.log

Additional Information

• As per the HPE advisory , issue is resolved in the latest iSUT 6.2.0 (or later)