Can Nutanix infrastructure create memory dumps from snapshots?


Badge
  • Pathfinder
  • 0 replies
Hello,

I am an engineer with a security software vendor. We have a mutual customer that seems be experiencing system hangs on their vms in use on their Nutanix Acropolis platform. Admittedly I am not very familar with Nutanix as I mostly work with Vmware. These hangs are reportedly occurring after they upgraded our security product.

Vmware has a process where we can create snapshot files and convert them into a memory dump file. This is helpful for our troubleshooting effort when normally you cannot take any action within the vm image to force a dump.

I am trying to find out if the Nutanix Acropolis infrastraucture has any comparable capability. I will be suggesting that our mutual customer reach out to you as well, but am trying to inverstigate capability in parallel.

Your assistance and advisement is welcome.

David Alexander

3 replies

Userlevel 4
Badge +20
I'll ask internally for you as I don't know but what OS is your appliacne running?
Userlevel 4
Badge +20
Also check out KB 3108



check these logs and contact Nutanix Support or your Alliance memeber.
  • ~/data/logs/acropolis.out on the Acropolis Master
  • QEmu log on the host which runs the Guest VM (UVM logs in the AHV host --> /var/log/libvirt/qemu/{vm_uuid}.log)
  • ACLI Task log
Userlevel 4
Badge +20
You can try to configure the guest to create a dump file on a persistent disk. After that, when the guest hangs, inject an NMI to it using virsh inject-nmi (https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Virtualization_Deployment_and_Administration_Guide/sect-Generic_Commands-Injecting_NMI.html). If the guest OS is Windows 2012 or later, it’s configured for NMI already. If it’s Linux, I’m not sure, but I suspect it must be setup.

Reply