Problem with /dev/random and rngd daemon
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Quoted 2 lines · Anthony Brock
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:
Quoted 8 lines
open("/dev/hwrng", O_RDONLY)= 3rt_sigaction(SIGALRM, {0x400267a0, [], 0}, NULL, 8)= 0rt_sigprocmask(SIG_UNBLOCK, [ALRM], NULL, 8)= 0
alarm(10) = 0read(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".
Quoted 2 lines
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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