Description of problem:

During an upgrade from F9 to F10, ananconda crashes when trying to unmount (at the point immediately after selecting to upgrade rather than reinstall). The cause in this case was the use of a swap file in /.

Version-Release number of selected component (if applicable):

F10 anaconda.

How reproducible:

Very.

Steps to Reproduce:

On a pre-F10 system:
1. dd if=/dev/zero of=/SWAP bs=1M count=200
2. mkswap /SWAP
3. echo "/SWAP swap swap defaults 0 0" >> /etc/fstab
4. Now try to upgrade
  
Actual results:

Installer crash.

Expected results:

Don't use the swap found if it is on a fs that will be unmounted, or remove it/add it back after remounted.

Additional info:

anaconda 11.4.1.62 exception report
Traceback (most recent call first):
  File "/usr/lib/anaconda/isys.py", line 374, in umount
    rc = _isys.umount(what)
  File "/usr/lib/anaconda/fsset.py", line 195, in umount
    isys.umount(path, removeDir = 0)
  File "/usr/lib/anaconda/fsset.py", line 2165, in umount
    self.mountpoint))
  File "/usr/lib/anaconda/fsset.py", line 2109, in umountFilesystems
    entry.umount(instPath)
  File "/usr/lib/anaconda/fsset.py", line 1914, in migrateFilesystems
    self.umountFilesystems(anaconda.rootPath, swapoff = False)
  File "/usr/lib/anaconda/packages.py", line 98, in doMigrateFilesystems
    anaconda.id.fsset.migrateFilesystems (anaconda)
  File "/usr/lib/anaconda/dispatch.py", line 204, in moveStep
    rc = stepFunc(self.anaconda)
  File "/usr/lib/anaconda/dispatch.py", line 127, in gotoNext
    self.moveStep()
  File "/usr/lib/anaconda/text.py", line 741, in run
    anaconda.dispatch.gotoNext()
  File "/usr/bin/anaconda", line 955, in <module>
    anaconda.intf.run(anaconda)
SystemError: (16, 'Device or resource busy')