> A full report of filesystem lossage is going to be a bit image of a > filesystem which has failed, at the least, and ideally, a description > of what operations were in progress at the time it failed. > > You could get the latter in the Hurd by running the failing cases > under a sub-hurd. Could someone give me a pointer of how to go about this. Setting up a sub-hurd is documented in the Hurd manual.