Date: Wed, 6 Mar 2013 23:00:10 -0000 From: "Steven Hartland" <killing@multiplay.co.uk> To: "Larry Rosenman" <ler@lerctr.org>, "Martin Simmons" <martin@lispworks.com> Cc: tevans.uk@googlemail.com, freebsd-fs@freebsd.org, ronald-freebsd8@klop.yi.org Subject: Re: zfs send/recv invalid data Message-ID: <218B0537E987442EAB8027EA478F8BE9@multiplay.co.uk> References: <7c93aef20a88cdbcca85739e67470dce@webmail.lerctr.org> <op.wthqmth68527sy@212-182-167-131.ip.telfort.nl> <25894116c93a59dab1fd976b425c36d1@webmail.lerctr.org> <07b59d5d4b2a3dab1385b054eea4f2da@webmail.lerctr.org> <A3EA720372254541BCCB6C92DBA36A0E@multiplay.co.uk> <7619c6383449c7a316edb1cdffc98c54@webmail.lerctr.org> <alpine.BSF.2.00.1303052052300.52489@thebighonker.lerctr.org> <473BCD0A4A7A4E6AB08409A9B0C82363@multiplay.co.uk> <d7c08e218ef301f1202354d0b11a6742@webmail.lerctr.org> <CAFHbX1LC25pyOBUGJ-PFxzTOXvJPYOF15H0%2BfTk6qfCyT-Q8fA@mail.gmail.com> <6dcfb2284551025af3cf58703a2b5cdc@webmail.lerctr.org> <920990505611cd96a075c80d06691bb0@webmail.lerctr.org> <201303061857.r26IvLnc024186@higson.cam.lispworks.com> <fc81037894dbc014853ba8fed06e427f@webmail.lerctr.org> <9e133e088f6c3c3dafdc0a99eb7c48c1@webmail.lerctr.org>
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----- Original Message -----
From: "Larry Rosenman" <ler@lerctr.org>
> # cat send.stream | ssh root@home openssl md5
> (stdin)= 9cd1d73ea8411f1c222bc90e7bea3d33
> # uname -a
> FreeBSD thebighonker.lerctr.org 8.3-STABLE FreeBSD 8.3-STABLE #54
> r247820: Mon Mar 4 18:08:11 CST 2013
> root@thebighonker.lerctr.org:/usr/obj/usr/src/sys/THEBIGHONKER amd64
> #
> # exec csh
> root@borg:/home/ler # pwd
> /home/ler
> root@borg:/home/ler # ssh tbh "cat
> /home/ler/public_html/ZFS_RECV/send.stream | ssh root@home.lerctr.org
> openssl md5"
> (stdin)= 9cd1d73ea8411f1c222bc90e7bea3d33
> root@borg:/home/ler # uname -a
> FreeBSD borg.lerctr.org 10.0-CURRENT FreeBSD 10.0-CURRENT #124 r247826:
> Mon Mar 4 19:59:08 CST 2013
> root@borg.lerctr.org:/usr/obj/usr/src/sys/BORG-DTRACE amd64
> root@borg:/home/ler #
When you run a command from ssh it will run as the target users shell
so for csh if there is something bad in .cshrc or iirc .profile then
you may get something output purely by logging in.
So ensure you shell config's for the user on the target machine are
clean.
You can confirm this by comparing the output from the following
two commands run from the sending machine:-
md5 send.stream
cat send.stream | ssh root@home.lerctr.org "cat" |md5
If these two commands produce different md5's then the login
shell for root on home.lerctr.org is outputing something
even when there is no terminal.
You should be able to see what the shell is outputting using:-
echo -n '' | ssh root@home.lerctr.org "cat" > 1.log
After running this 1.log should be 0 bytes if its not your
shell is definitely your problem and I'd start by looking
at .cshrc and .profile for this user, or even the globals
for these in /etc/
Regards
Steve
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