I would recommend doing an on-line resize. That code path should work for you.
As far as why the off-line resize is hanging, you would need to run it with debugging symbols under gdb and then stop it and submit a stack trace so we can see where it is hanging.
I would recommend doing an on-line resize. That code path should work for you.
As far as why the off-line resize is hanging, you would need to run it with debugging symbols under gdb and then stop it and submit a stack trace so we can see where it is hanging.