Recovery

Appliance Down! Emergency Mode! failed to start file system check

Appliance Down! Emergency Mode! failed to start file system check. My lab had a little hi-cough the other day, I’d managed to fill the management vSAN partition…  Never a good idea.  Whilst I managed to recover space and bring VMs back online one VM greeted me with the following screen… Luckily I’d seen this behaviour before and knew roughly what to do – something I was able to validate by reviewing this KB article.  What… Read More »Appliance Down! Emergency Mode! failed to start file system check

vSAN Orphaned Objects

  • simon 

I recently got asked a question about how to managed orphaned objects in vSAN, previously with VMFS this was being managed with a PowerShell script, but the customer couldn’t get it to work with vSAN.  Which is expected behaviour as managing these vSAN namespace associations/objects is not possible via the GUI or script. Instead these namespaces can be managed using RVC or the Ruby vSphere Console if required. The following blog details the use of… Read More »vSAN Orphaned Objects

Troubleshooting and Recovery Planning

  • simon 

When there is an outage, it is natural to panic a little and maybe try a rush troubleshooting steps.  In my experience this is oftentimes counterproductive.  Symptoms can often be missed as the root cause, which has the net effect of extending the time to resolution.  So where would I suggest is the best place to start, well that in part depends on the symptoms.  However, the log files will tell you everything that you need to know.