Am Sun, 14 May 2017 10:58:40 -0700
schrieb Marc MERLIN [off-list ref]:

bcache-tools (1.0.8-2+b1)

gargamel:~# make-bcache  -C /dev/sde2
Already a bcache device on /dev/sde2, overwrite with --wipe-bcache
gargamel:~# make-bcache  --wipe-bcache -C /dev/sde2 
Device /dev/sde2 already has a non-bcache superblock, remove it using
wipefs and wipefs -a

/dev/sde2 is an old bcache I'm reformatting.
The first message is correct
The 2nd one is not "/dev/sde2 already has a non-bcache superblock"

Clearly it can't have a bcache and not a bcache superblock, right?

I don't think that each filesystem puts their superblocks in the same
position. Plus, there are usually backup superblocks across the area.

So you may well see both warnings and both are correct.

Use wipefs, there seems to be an orphan superblock.

-- 
Regards,
Kai

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