Hi,
How can the number of pty's be updated dynamically?
The alpha_osf_managers archive has been searched and
the specific issue of dynamic increasing of pty's
is not addresed. At least not in enough detail that
I have had success.
The System Admimistration manual and the sysconfig(8)
man pages say it can be done but ... no success so far.
Here's the long story:
o The system is running Digital Unix V3.2C.
o The RPTY option (NOT the pty pseudodevice) is used in
the system configuration file.
o The LDTTY option is also in the system configuration
file.
o In /dev ptys range from ptyp0 to ptysf
$ cd /dev
$ ls pty*
ptyp0 ptypa ptyq4 ptyqe ptyr8 ptys2 ptysc
ptyp1 ptypb ptyq5 ptyqf ptyr9 ptys3 ptysd
ptyp2 ptypc ptyq6 ptyr0 ptyra ptys4 ptyse
ptyp3 ptypd ptyq7 ptyr1 ptyrb ptys5 ptysf
ptyp4 ptype ptyq8 ptyr2 ptyrc ptys6
ptyp5 ptypf ptyq9 ptyr3 ptyrd ptys7
ptyp6 ptyq0 ptyqa ptyr4 ptyre ptys8
ptyp7 ptyq1 ptyqb ptyr5 ptyrf ptys9
ptyp8 ptyq2 ptyqc ptyr6 ptys0 ptysa
ptyp9 ptyq3 ptyqd ptyr7 ptys1 ptysb
o /etc/sysconfigtab currently does not have a pts subsystem
entry.
1) When connecting to a system running Digital Unix V3.2C,
this happens:
$ rsh hydra
Out of ptys: Error 2Connection closed.
There are a lot of connections and when there are less
connections the problem goes away.
2) I would like to update the number of ptys
dynamically, but fail. Here's the method:
# /sbin/sysconfig -q pts
nptys = 255
# /sbin/sysconfig -r pts nptys=512
subsystem error: Invalid argument
This message comes out on the system console:
STREAMS: module 'pts' configure failed (22)
3) On a test system, I can also not update the number
of ptys dynamically
I can however by updating /etc/sysconftab and
rebooting the system. I do not
have to do a cd /dev; ./MAKEDEVS PTY_...
Thanks for any help, --Lew
lranderson_at_Pppl.GOV
Received on Wed Apr 15 1998 - 17:12:22 NZST