The kernel configuration should probably be updated to disable CONFIG_SYSFS_DEPRECATED. The attached screen shot is from booting install-x86-minimal-20100216.iso into qemu-kvm.
Created attachment 224265 [details] x86-boot-sysfs-deprecation.png
*** Bug 315607 has been marked as a duplicate of this bug. ***
New kconfigs have been uploaded. Next week(if the installcds build) should be fixed. Let's keep this open until the installcds are built.
*** Bug 327017 has been marked as a duplicate of this bug. ***
At least "udevd-work[14195]: device node '/dev/mapper/control' already exists, link to '/dev/mapper/control' will not overwrite it" message from dup bug #327017 is still there which is not resolved in this bug. We should fix this problem too. This warning message is seen in stable amd64 udev (=sys-fs/udev-149).
On my system, I can't disable CONFIG_SYSFS_DEPRECATED_V2 because udev won't create my disk device nodes properly anymore. Please see bug #292833.
This has been fixed in the specs since 2.6.31. The udev issues should all be fixed as well.