On Thu, Oct 12, 2006 at 10:25:32AM -0700, John Zavgren wrote:
> It appears that a COW file and its backing file are not portable...
> I.e., if I move a pair from one directory to another, the COW file no
> longer works. When I examine the boot messages when such a failure
> occurs, there is an indication (driven by the COW file) that the path
> name to the backing root file system is based on the original context.
> I.e., the COW file remembers the old absolute path.
>
> Is there any way to work around this?
On the first boot after the move, use the ubdx=cow-file,backing-file
syntax. UML will sanity-check the backing file and update the COW
file header.
And make sure you preserve the modification time across the move.
Jeff
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