HP-UX 11.00 truncating remote commands

[Jason Holland]

Ok, this is very weird.

root at hp1# remsh hp2 cat /var/adm/syslog/xferlog | wc
220378 4187182 28622518
root at hp1# ssh hp2 cat /var/adm/syslog/xferlog | wc
220378 4187182 28622518
root at hp1#

that worked!  and whats stranger is going to the linux box

root at hp1# ssh linux1 cat /var/log/cron | wc
1788 13212 164864
root at hp1# remsh linux1 cat /var/log/cron | wc
2342 17275 215496
root at hp1#

that didn't work!  :)  i don't understand this.  could this be a problem
with my clients on the hp side?  from the linux box, to an hp box, it works

root at linux1# ssh hp1 cat /var/adm/syslog/xferlog | wc
  28440  540360 3859990
root at linux1# rsh hp1 cat /var/adm/syslog/xferlog | wc
  28440  540360 3859990
root at linux1#

???  i used gcc 2.95.2 and openssl 0.95a to compile openssh on my hp boxes.
i have no clue, this is just too weird.

Jason

>
> On Wed, Nov 29, 2000 at 08:38:01AM -0600, Jason Holland wrote:
> >   i hope someone can help me out with this little nasty.  i have openssh
> > 2.3.0p1 installed on some hp-ux 11.00 boxes and a single linux box.  i'm
> > trying desperately to replace trusted hosts on these machines
> with something
> > a little more secure.  running some remote commands between the
> hp boxes,
> > i'm getting different results with ssh than with remsh.
> >
> > root at hp1# remsh hp2 cat /etc/passwd | wc
> > 649 2750 44210
> > root at hp1# ssh hp2 cat /etc/passwd | wc
> > 607 2636 40960
> > root at hp1#
>
> Hmm. First part of the answer: I just made some experiments and could not
> reproduce the behaviour on HP-UX 10.20. (This actually does not surprise
> me, as I run 2.3.0p1 in production since its release and I would
> have noted
> the behaviour you describe...)
>
> I only have a vague idea on what to look for: 40960 is 10x4096,
> this probably
> is not just coincidence. Especially when 10x4096=5x8192 and
> PIPE_BUF=8192...
>
> > root at hp1# remsh linux1 cat /etc/passwd | awk -F: '{print $3}' | wc
> > 23 23 67
> > root at hp1# ssh linux1 cat /etc/passwd | awk -F: '{print $3}' | wc
> > 23 23 67
> > root at hp1#
>
> Unfortunately, the size to be treated is different. Could you also try to
> run a larger file through "cat" and only pass it through wc?
>
> Best regards,
> 	Lutz
> --
> Lutz Jaenicke                             Lutz.Jaenicke at aet.TU-Cottbus.DE
> BTU Cottbus               http://www.aet.TU-Cottbus.DE/personen/jaenicke/
> Lehrstuhl Allgemeine Elektrotechnik                  Tel. +49 355 69-4129
> Universitaetsplatz 3-4, D-03044 Cottbus              Fax. +49 355 69-4153
>
>