The device-mapper seems to be running in to some sort of problem during the boot
of F7t4 x86_64 on an HP m7680n computer. The output from rpm -q on device-mapper
shows device-mapper-1.02.17-7.fc7. The problem occurs on every boot of the computer.
I have attached an extra of the /var/log/dmesg file showing the messages from
device-mapper. I included a few extra lines so you can see where the problem
occurs in the boot process.
This is known kernel device-mapper problem, actually this is "warning only"
caused by recursive dm_requests (mostly when using dm stacked devices) calls
without properly notifying lock validator about lock nesting (in the case of
stacked devices it is false positive but this issue still need further
investigation).
*** This bug has been marked as a duplicate of 204311 ***