Created attachment 324922 [details] exception log Description of problem: When doing upgrade from Fedora10 DVD, I gt a message that anaconda encountered an exception. I am attaching the log generated. Might have something to do with my encrypted device.
I just commented out this line in /etc/fstab and the upgrade proceeded past the point of failure: /dev/mapper/backup /backups ext3 defaults 0 0
*** Bug 475194 has been marked as a duplicate of this bug. ***
*** Bug 476507 has been marked as a duplicate of this bug. ***
I too experienced this bug. However, paring my fstab down to only the installed hard drives (3 of them, all SATA) did not make any difference. I was using preupgrade from F9 to F10 on x86_64. I'd be willing to beta test any fixes if you can instruct me how to do it within the preupgrade framework.
The basic problem is that there is no easy way to know that the device referenced by the fstab is a mapped LUKS device. (If the troublesome device is not a mapped LUKS device, you are seeing a different problem.) The simplest solution is to change the mapping so that the mapped device starts with 'luks-', eg: 'luks-backups' (using the example from the original reporter). To do this, edit /etc/crypttab to change the mapping name so it begins with 'luks-', then edit /etc/fstab to use the new device (eg: /dev/mapper/luks-backups). After that, which should take no more than a few minutes, your upgrade should work.
I think I've run into something similar with an f8 to f10 upgrade using the DVD. I'm seeing: "Error mapping device mapper/foo as /home/foo; mount: special device /dev/mapper/foo does not exist". The same error appears whether or not the passphrase is provided. The solution suggested (prepending "luks-" to all of the labels) worked (so far), and it had to be added to both the regular partition and encrypted swap partition entries. At the very least, I suggest this be added to the known bugs list.