tune2fs: if turning off csum_seed and the UUID has changed, require fsck

In the case where the UUID has changed and the user wants to turn off
the csum_seed feature, it's important that file system be freshly
checked.  That's also the only case when it's necessary to recalculate
all of the metadata file systems.

Signed-off-by: Theodore Ts'o <tytso@mit.edu>
1 file changed