Luigi Fabio <luigi.fabio@xxxxxxxxx> writes: > The way I have found it explained in multiple places is that the > backups only get updated as a consequence of an actual userspace > interaction. So you have to run fsck or at least change settings in > tune2fs, for instance, or resize2fs ... then all the backups get > updated. Exactly. Changing the filesystem with tune2fs or resize2fs requires that all of the backups be updated. > The jury is still out on whether automated fscks - for those lunatics > who haven't disabled them - update or not. There is conflicting > information. IIRC, a preen ( the automatic fsck at boot ) normally just sees that the dirty flag is not set ( since the filesystem was cleanly unmounted, right? ), and doesn't do anything else. If there was an unclean shutdown though, and a real fsck is run, then it updates the first backup.
