Re: rsync hangs on RedHat 2.4.2 or stock 2.4.4

[David S. Miller]

Russell King writes:
 > At the time I suggested it was because of a missing wakeup in 2.4.2 kernels,
 > but I was shouted down for using 2.2.15pre13.  Since then I've seen these
 > reports appear on lkml several times, each time without a solution nor
 > explaination.
 > 
 > Oh, and yes, we're still using the same setup here at work, and its running
 > fine now - no rsync lockups.  I'm not sure why that is. ;(

Look everyone, it was determined to be a deadlock because of some
interaction between how rsync sets up it's communication channels
with the ssh subprocess, readas: userland bug.

I don't remember if the specific problem was in rsync itself or some
buggy version of ssh.  One can search the list archives to discover
Alexey's full analysis of the problem.  I don't have a URL handy.

Later,
David S. Miller
[e-mail]