Windows 7 virtual machines running on VMware ESXi 6.0 hosts restart unexpectedly

Products

• VMware

Issue/Introduction

Symptoms:

• Windows 7 virtual machine restarts unexpectedly when running on ESXi 6.0 hosts.
• In the /var/log/vmkwarning.log, you see entries similar to:

<YYYY-MM-DD>T<time> cpu3:255920)WARNING: World: vm 255903: 12276: vmm0:VDI-STD-005:vmk:vcpu-0:p2m update buffer full</time>

<YYYY-MM-DD>T<time></time> cpu3:255920)WARNING: VmMemPf: vm 255903: 652: COW copy failed: pgNum=0x3d108, mpn=0x3fffffffff

<YYYY-MM-DD>T<time></time> cpu3:255920)WARNING: VmMemPf: vm 255903: 2626: PhysPageFault failed Failure: pgNum=0x3d108, mpn=0x3fffffffff

<YYYY-MM-DD>T<time></time> cpu3:255920)WARNING: UserMem: 10592: PF failed to handle a fault on mmInfo at va 0x60ee6000: Failure. Terminating...

<YYYY-MM-DD>T<time></time> cpu3:255920)WARNING: World: vm 255896: 3973: VMMWorld group leader = 255903, members = 1

<YYYY-MM-DD>T<time></time> cpu7:255896)WARNING: World: vm 255896: 3973: VMMWorld group leader = 255903, members = 1

<YYYY-MM-DD>T<time></time> cpu0:32859)WARNING: World: vm 255903: 9604:Panic'd VMM world being reaped, but no core dumped.

Note: The preceding log excerpts are only examples. Date, time, and environmental variables may vary depending on your environment.

Cause

The issue occurs when the virtual machine uses a high video resolution setting or uses multiple displays.

Resolution

This issue is resolved in ESXi 6.0 Update 1, available at VMware Downloads. For more information, see the ESXI 6.0 Update 1 Release Notes.

Note: If the affected ESXi 6.0 hosts are part of a VMware Horizon View cluster, ESXi 6.0 Update 1 is compatible with VMware Horizon View 6.2 and above.

To work around this issue, change the sched.mem.pshare.enable to false in the virtual machines .vmx file:

1. Shutdown the affected virtual machine.
2. Connect to the ESXi host running the virtual machine with SSH using root credentials. For more information, see Using ESXi Shell in ESXi 5.x and 6.0 (2004746).
3. Navigate to the virtual machine folder by running this command:
   
   cd /vmfs/volumes/vm_datastore/virtual_machine/
   
   
4. Open the virtual machines .vmx file using text editor:
   
   vi virtual_machine.vmx
   
   
5. Edit the entry sched.mem.pshare.enable to be false:
   
   For example:
   
   sched.mem.pshare.enable = "FALSE"
   
   
6. Save the changes and exit the editor.
7. Power on the virtual machine.

Additional Information

To be alerted when this document is updated, click the Subscribe to Article link in the Actions box.Using ESXi Shell in ESXi 5.x and 6.x
VMware ESXi 6.0 ホストで実行している Windows 7 仮想マシンが予期せずに再起動される
在 VMware ESXi 6.0 主机上运行的 Windows 7 虚拟机意外重新启动