From: tsh@mrc-lmb.cam.ac.uk
Date: Fri Mar 28 2003 - 07:10:53 EST
Hi all,
We occasionally get this error when using commands involving pipes:
alf1_tsh> echo hello | cat | cat | cat
setpgid child:
: Not owner.
alf1_tsh> echo hello | cat | cat | cat
hello
alf1_tsh> echo hello | cat | cat | cat
setpgid child:
: Not owner.
setpgid child:
: Not owner.
setpgid child:
: Not owner.
(This is a silly command, just to provoke the problem)
The errors aren't reproducible, and will usually succeed on a retry.
A possibly related problem, is that sometimes, attempts to
initiate a 'make' from within Emacs, will result in the error:
Opening pty or pipe: No such device or address
This error is usually much more persistent than the 'Not owner' one.
Any clues as to where we might start looking?
We have 368 pseudoterminal devices:
alf1_tsh> ls /dev/pts* | wc -l
368
And when the problems occur, I dont see any evidence of pts exhaustion.
We're running 5.1 PK5
Cheers,
Terry.
Terry Horsnell (tsh@mrc-lmb.cam.ac.uk)
I.T. Manager
Medical Research Council
Lab of Molecular Biology
Hills Road
CAMBRIDGE CB2 2QH
U.K.
Phone: +44 (0)1223 248011
Fax: +44 (0)1223 213556
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