virtualbox.org

Hello Everyone,

Few days back I had created one VM with CentOS7 and after that I created another VM by cloning 1st one. Both are worked on that day. After completion of my work, I powered off both the VMs and then closed VirtualBox. When I tried to open after one/two days, none of the VM is opening. The error message is:

Failed to open a session for the virtual machine hbas1.

The VM session was closed before any attempt to power it on.

Result Code: E_FAIL (0x80004005)
Component: SessionMachine
Interface: ISession {c0447716-ff5a-4795-b57a-ecd5fffa18a4}

Log fils for the VM are aslo attached.
Please help in fixing this issue.

Thank you.

Thanks for the logs. They both show properly-running VMs without problems, so I suspect they were from the previous successful runs, not the erroring runs, which may have not made any logs because the vm 'hardware' did not 'power up'.

The host has limited RAM, and I wonder if your host had too many running apps at the time that you tried to start the VMs. Please try rebooting the host and try the VMs again.

Thanks for your reply.

My host laptop is having 6GB of RAM and no other programs are running at the time of switching On the VMs. I tried two three times to re-start my laptop and power ON the VMs one by one. But, no luck. Any other suggestions?

Thank you,

V N Murthy wrote: My host laptop is having 6GB of RAM and no other programs are running at the time of switching On the VMs.

Look at the log yourself. Your host has 6GB RAM and is running a 64bit OS. It has approximately 1700MB free at the time of launching the VM. You only allocate 1024MB to the VM which is fine, you don't instantly starve the host, but that is not a lot of RAM to run a 64bit Linux in.

I don't like that you are using a generic Linux template - why not use the correct distro template? What is the distro?

I also don't like that you only allocate 16MB graphics RAM. Increase to 64MB.

Having only two cores there is no good way to allocate them, but I'd still share both with the VM. Currently you only share 1 core.