6.0.1
Table Of Contents
- vSphere Troubleshooting
- Contents
- About vSphere Troubleshooting
- Updated Information
- Troubleshooting Overview
- Troubleshooting Virtual Machines
- Troubleshooting Fault Tolerant Virtual Machines
- Hardware Virtualization Not Enabled
- Compatible Hosts Not Available for Secondary VM
- Secondary VM on Overcommitted Host Degrades Performance of Primary VM
- Increased Network Latency Observed in FT Virtual Machines
- Some Hosts Are Overloaded with FT Virtual Machines
- Losing Access to FT Metadata Datastore
- Turning On vSphere FT for Powered-On VM Fails
- FT Virtual Machines not Placed or Evacuated by vSphere DRS
- Fault Tolerant Virtual Machine Failovers
- Troubleshooting USB Passthrough Devices
- Recover Orphaned Virtual Machines
- Virtual Machine Does Not Power On After Cloning or Deploying from Template
- Troubleshooting Fault Tolerant Virtual Machines
- Troubleshooting Hosts
- Troubleshooting vSphere HA Host States
- vSphere HA Agent Is in the Agent Unreachable State
- vSphere HA Agent is in the Uninitialized State
- vSphere HA Agent is in the Initialization Error State
- vSphere HA Agent is in the Uninitialization Error State
- vSphere HA Agent is in the Host Failed State
- vSphere HA Agent is in the Network Partitioned State
- vSphere HA Agent is in the Network Isolated State
- Configuration of vSphere HA on Hosts Times Out
- Troubleshooting Auto Deploy
- Auto Deploy TFTP Timeout Error at Boot Time
- Auto Deploy Host Boots with Wrong Configuration
- Host Is Not Redirected to Auto Deploy Server
- Package Warning Message When You Assign an Image Profile to Auto Deploy Host
- Auto Deploy Host with a Built-In USB Flash Drive Does Not Send Coredumps to Local Disk
- Auto Deploy Host Reboots After Five Minutes
- Auto Deploy Host Cannot Contact TFTP Server
- Auto Deploy Host Cannot Retrieve ESXi Image from Auto Deploy Server
- Auto Deploy Host Does Not Get a DHCP Assigned Address
- Auto Deploy Host Does Not Network Boot
- Authentication Token Manipulation Error
- Active Directory Rule Set Error Causes Host Profile Compliance Failure
- Unable to Download VIBs When Using vCenter Server Reverse Proxy
- Troubleshooting vSphere HA Host States
- Troubleshooting vCenter Server and the vSphere Web Client
- Troubleshooting Availability
- Troubleshooting Resource Management
- Troubleshooting Storage DRS
- Storage DRS is Disabled on a Virtual Disk
- Datastore Cannot Enter Maintenance Mode
- Storage DRS Cannot Operate on a Datastore
- Moving Multiple Virtual Machines into a Datastore Cluster Fails
- Storage DRS Generates Fault During Virtual Machine Creation
- Storage DRS is Enabled on a Virtual Machine Deployed from an OVF Template
- Storage DRS Rule Violation Fault Is Displayed Multiple Times
- Storage DRS Rules Not Deleted from Datastore Cluster
- Alternative Storage DRS Placement Recommendations Are Not Generated
- Applying Storage DRS Recommendations Fails
- Troubleshooting Storage I/O Control
- Troubleshooting Storage DRS
- Troubleshooting Storage
- Resolving SAN Storage Display Problems
- Resolving SAN Performance Problems
- Virtual Machines with RDMs Need to Ignore SCSI INQUIRY Cache
- Software iSCSI Adapter Is Enabled When Not Needed
- Failure to Mount NFS Datastores
- VMkernel Log Files Contain SCSI Sense Codes
- Troubleshooting Storage Adapters
- Checking Metadata Consistency with VOMA
- Troubleshooting Flash Devices
- Troubleshooting Virtual Volumes
- Troubleshooting VAIO Filters
- Troubleshooting Networking
- Troubleshooting MAC Address Allocation
- The Conversion to the Enhanced LACP Support Fails
- Unable to Remove a Host from a vSphere Distributed Switch
- Hosts on a vSphere Distributed Switch 5.1 and Later Lose Connectivity to vCenter Server
- Hosts on vSphere Distributed Switch 5.0 and Earlier Lose Connectivity to vCenter Server
- Alarm for Loss of Network Redundancy on a Host
- Virtual Machines Lose Connectivity After Changing the Uplink Failover Order of a Distributed Port Group
- Unable to Add a Physical Adapter to a vSphere Distributed Switch
- Troubleshooting SR-IOV Enabled Workloads
- A Virtual Machine that Runs a VPN Client Causes Denial of Service for Virtual Machines on the Host or Across a vSphere HA Cluster
- Low Throughput for UDP Workloads on Windows Virtual Machines
- Virtual Machines on the Same Distributed Port Group and on Different Hosts Cannot Communicate with Each Other
- Attempt to Power On a Migrated vApp Fails Because the Associated Protocol Profile Is Missing
- Networking Configuration Operation Is Rolled Back and a Host Is Disconnected from vCenter Server
- Troubleshooting Licensing
- Index
Incorrect Virtual Machine Protection State
A virtual machine in a vSphere HA cluster is reported as vSphere HA unprotected although it has been
powered on for several minutes.
Problem
When a virtual machine is powered on for several minutes, yet its vSphere HA protection state remains as
unprotected, if a failure occurs, vSphere HA might not attempt to restart the virtual machine.
Cause
vCenter Server reports a virtual machine as protected after the vSphere HA master host that is responsible
for the virtual machine has saved to disk the information that the virtual machine must be restarted after a
failure. This process can fail for a number of reasons.
n
vSphere HA master host has not been elected or vCenter Server is unable to communicate with it.
In this situation, vCenter Server reports the vSphere HA host state for the cluster hosts as Agent
Unreachable or Agent Uninitialized and reports a cluster configuration problem that a master host has
not been found.
n
Multiple master hosts exist and the one with which vCenter Server is communicating is not responsible
for the virtual machine.
Problems occur when vCenter Server is in contact with a master host, but due to a management
network partition, there are multiple master hosts, and the agent with which vCenter Server is
communicating is not responsible for the virtual machine. This situation is likely if vCenter Server is
reporting the vSphere HA state of some hosts as network partitioned.
n
Agent is unable to access the datastore on which the configuration file of the virtual machine is stored.
vCenter Server might be in contact with the vSphere HA master host that owns the virtual machine, but
the agent is unable to access the datastore on which the configuration file of the virtual machine is
stored. This situation can occur if an all paths down condition affects all hosts in the cluster.
Solution
1 Determine whether vCenter Server is in contact with a vSphere HA master host, and if not, address this
problem.
2 If vCenter Server is in contact with a master host, determine whether there is a network partition, and if
so, address that problem.
3 If the problem persists, determine if other virtual machines that use the same datastore for their
configuration files are also unprotected.
4 If these virtual machines are unprotected, verify that the vSphere HA master host can access the
datastore.
5 If none of the previous steps resolves the problem, restore protection by reconfiguring vSphere HA on
the host on which the virtual machine is running.
Virtual Machine Restart Fails
After a host or virtual machine failure, a virtual machine might not be restarted.
Problem
When a host fails or a virtual machine fails while its host continues running, the virtual machine might not
restart or restarts only after a long delay.
Chapter 5 Troubleshooting Availability
VMware, Inc. 47