I've checked the list archives, and I can't find any mention of this
specific problem. (this is not a problem of too few ptys)
Three times in the last day and a half, one of our 3000/600s running DU3.2
has managed to "lose track" of all of its ptys. At some point it stops
allowing people to connect, and as users log out, nobody else can log on.
No xterms can be started, nothing that requires a shell can run, and
telnet and rlogin fail with "telnetd: All network ports in use." and
"Out of ptys: Error 2rlogin: connection closed." respectively.
All three times, the following has fixed the problem:
rsh csugrad "cd /dev; ./MAKEDEV PTY_1"
rsh csugrad "cd /dev; ./SYSV_PTY"
And just like that, the problem vanishes, only to reappear hours
later. Once was a fluke. Twice was worrisome. The fact that it happened
again in the middle of last night bothers me a lot. The system is not
heavily loaded during the summer; a maximum of 10-15 users. I haven't
seen any wild processes causing problems.
Oh.. and perhaps it is unrelated, but I've never been able to get
screen to work on this machine. Compiled out of the box, it complains
with the messages "No more PTYs." <cls> "Sorry, could not find a PTY."
--
Eli Burke
eburke_at_vt.edu
http://csugrad.cs.vt.edu/~eburke/
Received on Wed Jul 31 1996 - 18:06:02 NZST