> Has anybody an idea what I could do to find the cause of this
> "disappearing /dev/null"? Thank you in advance for your help!
Well, it doesn't disappear so much as having its permissions altered,
but I'm certain you are aware of that.
Are you sure it's OpenSSH? What other daemons are using to /dev/null
(fstat?)? It would make sense if some daemon thought it was a logfile or
somesuch and decided to 'secure' it...
Hm, fstat doesn't show much unusual, mainly httpd and mysql besides
the standard daemons. I have the same combination of daemons running
on older machines (GENERIC 4.0 -stable without ACPI though), but no
problem there.
The permissions of /dev/null change directly after (or maybe even
while) using SFTP, and not always. Sometimes I can log in several
times over a few hours without fixing /dev/null, and then again only
one single time. E.g. right now I can't reproduce the error. And if I
don't use SCP/SFTP at all, everything works fine, for weeks, so it
seems to be related to SCP/SFTP. Probably it's only happening after
using SFTP (and SCP doesn't work afterwards), but unfortunately I'm
not sure as I don't transfer files that often.
I'll search in the direction of other deamons though. Thank you for the hint!
Tas.
