VM freezes as soon as datastore will run out of free disk space.

Hi all

I am looking for reason why VM in gel State as soon as my data store is out of free space on the disk.

Any response would be appreciated.

Kind regards

Varun Khatri

Hi mightyvarun,

It is an amazing new feature that I really like.  Believe me it's good for you.  Historically, VMs who lived on data warehouses that ran out of space would just BSoD in the case of Windows and for Linux, they would have a kernel panic or of the file system would be read only.  This happened only to virtual machines that have tried to generate I/O (i.e. write to disk).  Previously, the time it took for them to crash was purely depends on their tolerance for lack of disk i/o (configurable in the guest operating system).  The problem is that the old method was very incoherent and determine what virtual machines were actually affected was difficult as hard accident not all virtual machines.

This new enhancement is called 'thin provision stun"which is enabled by default in the case of using VAAI with thin Provisioning data (at least on NetApp and EMC gear) warehouses.  It protects you from data corruption by suspending the VM.  Once you have cleared the free space or expanded the data store, you simply answer the Question of comments with "try again".  I generally put my data stores to grow automatically to protect myself from these situations, but sometimes it happens when a volume was not settled properly to grow automatically.

After having eliminated the space, to answer the question and get virtual machines quickly turned, PowerCLI did a great job.
Get-Datastore MyDatastore | Get - VM | Get-VMQuestion | Game-VMQuestion-Option 'Retry '.

EDIT: Added the name of the primitive VAAI ("thin provision stun") in order to encourage further research

Tags: VMware

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