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Installer/partman: tmp & swap as logical volumes inside one random key encryted physical volume?



Hi,

Tried in vain in #debian-boot, so here again ...

Is this possible/desirable:
1) Create a physical volume for encryption, which uses a random key.
2) Create a lvm setup within 1), whcih contains logical volumes for tmp and 
swap.

Would that work? Would the system at boot time (with a new random key) 
generate both the lvm setup and the partitions contained therein?

Would this (as I hypothesize) buy you a bit better performance in comparison 
to having 2 independent physical volumes for encryption?

Thanks for any insight, Joh

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