Remote disk disconnected- Virtual Machine Linux Unavailable

Question

Good Evenning for all

There was a reboot of a virtual machine hosted on azure, and according to the "resource health" monitor the remote disk was disconnected.

This virtual machine is running a linux server that could not have stopped without warning, how to find out the cause of this sudden restart to configure not to restart without warning?

Answer 1

@Jairo Batanero Campos

Welcome to Microsoft Q&A Platform, thanks for posting your query here.

Firstly, apologies for the delay in responding here and any inconvenience this issue may have caused.

The issue reported here is the Linux VM reboot with error as remote disk was disconnected.

This issue might have happened due to connection loss between the physical host node where your VM was running, and the Azure Storage services where your Virtual Hard Disks (VHDs) reside.

Azure would have initiated VM shutdown triggered by detection of temporary IO transaction timeouts. Azure platform continuously monitors reads and writes (IO transactions) from your VMs to Azure Storage. If transactions do not complete successfully within 120 seconds (inclusive of retries), the connectivity is considered to be lost and a temporary VM shutdown is initiated to preserve data integrity and prevent corruption of your VM. After the platform detects that the storage service connectivity is restored, the VM is automatically restarted.

Hope that helps.
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