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    SubjectRe: Entropy Pool Contents
    Gunter Ohrner wrote:
    > Hi!
    >
    > (PEBKAC warning. I'm probably doing something dump. I just don't know
    > what...)
    >
    > I seem to have an entropy pool on a headless machine which is not nearly
    > empty (a common problem in this case, I know), but completely empty and
    > stuck in this state...
    >
    > Hornburg:~# cat /proc/sys/kernel/random/entropy_avail
    > 0
    > Hornburg:~# fuser /dev/urandom
    > Hornburg:~# lsof | grep random
    > Hornburg:~# cat /proc/sys/kernel/random/entropy_avail
    > 0
    > Hornburg:~# dd if=/dev/hdf of=/dev/urandom bs=512 count=1
    > 1+0 records in
    > 1+0 records out
    > 512 bytes transferred in 0.016268 seconds (31473 bytes/sec)
    > Hornburg:~# dd if=/dev/hdf of=/dev/random bs=512 count=1
    > 1+0 records in
    > 1+0 records out
    > 512 bytes transferred in 0.031943 seconds (16029 bytes/sec)
    > Hornburg:~# cat /proc/sys/kernel/random/entropy_avail
    > 0
    > Hornburg:~# fuser /dev/urandom
    > Hornburg:~# fuser /dev/random
    > Hornburg:~# lsof | grep random
    > Hornburg:~# cat /proc/sys/kernel/random/poolsize
    > 4096
    > Hornburg:~#
    >
    > Also causing disk activities doesn't help at all. (Two disks on a Promise
    > PDC20268 controller.)
    >
    > The system runs a rather ancient Debian Sarge 2.4 kernel:
    > Linux Hornburg 2.4.27-3-386 #1 Thu Sep 14 08:44:58 UTC 2006 i486 GNU/Linux
    >
    > However as the machine itself is also ancient, the 2.4 seems like a good
    > match. And also 2.4 ought to have a refilling entropy pool, doesn't it?
    >
    > Maybe someone can shed some light on what's happening here...

    Grab an entropy generator like egd or audio-entropyd, etc.

    Jeff



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