Any doc reference on /entropy file ?

Bernard Dugas bernard at
Tue Dec 16 20:38:03 UTC 2008

Wojciech Puchar wrote:
>> 2- As / will be mounted read-only, how can i tell the ramdom generator 
>> to put this /entropy file somewhere in /var, where i think it should 
>> be ? Or is there any tricky hidden problem ?
> man rc.conf  seek entropy_file and entropy_dir

Thanks, detail is available in /etc/default/rc.conf :

"entropy_file="/entropy" # Set to NO to disable caching entropy through 
                         # /var/db/entropy-file is preferred if / is not 

It means that i can put it in /var when L is read-only. There should be 
no problem as the file is choosen in rc.conf, so after /var is mounted.

As this is for diskless station, it would be fun to change the entropy 
file through the nfs server RANDOM, even better thant at each boot :-)

Best regards,
Bernard DUGAS Mobile +33 615 333 770

More information about the freebsd-questions mailing list