On Wed, Jun 01, 2005 at 10:57:59AM -0700, Anthony Brock wrote:
> I'm wondering if the first host to launch is exhausting the entropy
> pool and the second host is attempting to read from an empty pool.
The strace would seem to bear this out:
> open("/dev/hwrng", O_RDONLY) = 3
> rt_sigaction(SIGALRM, {0x400267a0, [], 0}, NULL, 8) = 0
> rt_sigprocmask(SIG_UNBLOCK, [ALRM], NULL, 8) = 0
> alarm(10) = 0
> read(3, 0xbfb50380, 4) = ? ERESTARTSYS (To be restarted)
> --- SIGALRM (Alarm clock) @ 0 (0) ---
> sigreturn() = ? (mask now [RTMIN])
> exit_group(1) = ?
This looks to me like "read from hwrng, but give up after 10 seconds
if nothing happens".
> If this is the case, then I have no idea how you could resolve this
> with multiple UML instances per host.
Can you read /dev/random on the host directly during this time? If
not, and you are out of entropy, I would say you need to find a source
of more of it.
Jeff
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