[Bug 879710] Re: ubuntu-vm-builder crashes when trying to umount tmp directory.

[amcs]

I see this every time on one KVM host machine and never on my other KVM 
host machine.

Good one is:

   Fully patched 11.10 Server (no desktop) acting as KVM host using 
vmbuilder to create guest instances of 11.10 server.

Bad one is:

   Fully patched 11.10 Workstation with Virtualization packages added 
executing the exact same command line.

I created a shell script to contain my vmbuilder command line and copied 
it to both host machines to be sure that I was performing identical 
activities on each.


I did dig through the Python traceback enough to locate the line 
throwing the exception.
Adding a simple "sleep" for 5 seconds makes it work every time.
I tried to add the suggested debug statements regarding the 
determination of who is holding the mount point busy.
But, for the life of me, I could not figure out where the log file went 
to -- where is the output of the debug being written?

I'm willing to investigate more if it's of service to anyone.


On 03/16/2012 02:31 PM, Casey Hilliard wrote:
> Wanted to add a note -- Resolved my own recurring issue by switching from lucid to essentially any other release. Can confirm that both maverick and oneiric work for me, having changed only the release in the call to vmbuilder.
> .i.e:
>
> sudo vmbuilder kvm ubuntu -v --debug --suite=maverick --flavour=virtual
> --rootsize=4096 --swapsize=1024 --mem=388 --arch=i386 --user=system
> --pass=changemenow --components=main,universe,restricted --addpkg=acpid
> --addpkg=openssh-server -o --libvirt qemu:///system
>
> works, where
>
> sudo vmbuilder kvm ubuntu -v --debug --suite=lucid --flavour=virtual
> --rootsize=4096 --swapsize=1024 --mem=388 --arch=i386 --user=system
> --pass=changemenow --components=main,universe,restricted --addpkg=acpid
> --addpkg=openssh-server -o --libvirt qemu:///system
>
> fails
>
> Considering that I had the command line string working in early Feb
> (2012-02-03) and that Lucid . 4 (10.04.4) was released ~ Feb 16, I'd
> have to guess that changes involved therein are leading to issues with
> vmbuilder?
>

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https://bugs.launchpad.net/bugs/879710

Title:
  ubuntu-vm-builder crashes when trying to umount tmp directory.

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