zfs send/recv invalid data

[Larry Rosenman]

On 2013-03-06 17:48, Steven Hartland wrote:
> ----- Original Message ----- From: "Larry Rosenman" <ler at lerctr.org>
> To: "Steven Hartland" <killing at multiplay.co.uk>
> Cc: "Martin Simmons" <martin at lispworks.com>;
> <tevans.uk at googlemail.com>; <freebsd-fs at freebsd.org>;
> <ronald-freebsd8 at klop.yi.org>
> Sent: Wednesday, March 06, 2013 11:16 PM
> Subject: Re: zfs send/recv invalid data
> 
> 
>> On 2013-03-06 17:00, Steven Hartland wrote:
>>> ----- Original Message ----- From: "Larry Rosenman" <ler at lerctr.org>
>>>> # cat send.stream | ssh root at 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 at thebighonker.lerctr.org:/usr/obj/usr/src/sys/THEBIGHONKER  
>>>> amd64
>>>> #
>>>> # exec csh
>>>> root at borg:/home/ler # pwd
>>>> /home/ler
>>>> root at borg:/home/ler # ssh tbh "cat 
>>>> /home/ler/public_html/ZFS_RECV/send.stream | ssh 
>>>> root at home.lerctr.org openssl md5"
>>>> (stdin)= 9cd1d73ea8411f1c222bc90e7bea3d33
>>>> root at 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 at borg.lerctr.org:/usr/obj/usr/src/sys/BORG-DTRACE  amd64
>>>> root at 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 at 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 at 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/
>>> 
>> I've done that, and get identical md5's.....
>> I'm at a loss.
> 
> I believe what you ran was similar but not identical, if you
> check the quoting subtly different.
> 
> I'm not sure that will have any effect but both of the above
> are worth running just to confirm.
> 
>    Regards
>    Steve
$ ^DConnection to thebighonker.lerctr.org closed.
$ ssh root at tbh
Last login: Tue Mar  5 06:51:46 2013 from cpe-72-182-19-1
FreeBSD 8.3-STABLE (THEBIGHONKER) #54 r247820: Mon Mar  4 18:08:11 CST 
2013

Welcome to FreeBSD!

root at thebighonker:~ # pwd
/root
root at thebighonker:~ # md5 /home/ler/public_html/ZFS_RECV/send
send-file-snap-list  send.stream          send.uname
root at thebighonker:~ # md5 /home/ler/public_html/ZFS_RECV/send.stream
MD5 (/home/ler/public_html/ZFS_RECV/send.stream) = 
9cd1d73ea8411f1c222bc90e7bea3d33
root at thebighonker:~ # cat /home/ler/public_html/ZFS_RECV/send.stream 
|ssh root at home.lerctr.org "cat"|md5
9cd1d73ea8411f1c222bc90e7bea3d33
root at thebighonker:~ #


looks like it's clean.....

Other ideas?
-- 
Larry Rosenman                     http://www.lerctr.org/~ler
Phone: +1 214-642-9640 (c)     E-Mail: ler at lerctr.org
US Mail: 430 Valona Loop, Round Rock, TX 78681-3893