cryptsetup failed to access temporary keystore device

Alex Hornung ahornung at
Sat Jun 4 03:43:40 PDT 2011

It would be helpful if you could provide some more information,

a) dmesg (up to the moment when this happens)
b) kldstat
c) dmsetup ls


On 03/06/11 22:18, Pierre Abbat wrote:
> # cryptsetup luksFormat /dev/da8s0e
> WARNING!!! Possibly insecure memory, missing mlockall()
> ========
> This will overwrite data on /dev/da8s0e irrevocably.
> Are you sure? (Type uppercase yes): YES
> Enter LUKS passphrase:
> Verify passphrase:
> Failed to access temporary keystore device.
> When I dump it, there are no keyslots in use. What's wrong? This is the 
> external drive on the USB cable; I have created a Hammer filesystem on 
> another partition.
> Pierre

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