Date: Wed, 06 Mar 2013 13:15:02 -0600 From: Larry Rosenman <ler@lerctr.org> To: 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: <9e133e088f6c3c3dafdc0a99eb7c48c1@webmail.lerctr.org> In-Reply-To: <fc81037894dbc014853ba8fed06e427f@webmail.lerctr.org> 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>
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On 2013-03-06 12:59, Larry Rosenman wrote: > On 2013-03-06 12:57, Martin Simmons wrote: >>>>>>> On Wed, 06 Mar 2013 05:07:28 -0600, Larry Rosenman said: >>> On 2013-03-06 04:56, Larry Rosenman wrote: >>>> On 2013-03-06 04:51, Tom Evans wrote: >>>>> On Wed, Mar 6, 2013 at 10:46 AM, Larry Rosenman <ler@lerctr.org> >>>>> wrote: >>>>>> So, you are correct that something(tm) is unclean about the ssh >>>>>> path. >>>>>> >>>>> And what is it that is added? Surely that is trivial to determine? >>>>> echo hello > foo >>>>> cat foo | ssh host cat >>>>> Cheers >>>>> Tom >>>> it seems to be bytestream dependent, as this simple case works, and >>>> the vast majority of the sends work, but the particular >>>> case in the thread does NOT. >>>> # echo hello >foo >>>> # cat foo | ssh home cat >>>> hello >>>> # >>> stranger: >>> $ cd /tmp >>> $ cat send.stream | ssh home openssl md5 >>> (stdin)= 9cd1d73ea8411f1c222bc90e7bea3d33 >>> $ openssl md5 send.stream >>> MD5(send.stream)= 9cd1d73ea8411f1c222bc90e7bea3d33 >>> $ >>> so I'm not sure what is tripping it in the stream to a pipe case. >> Is that running under the same uid? The script you posted earlier >> runs the >> pipe under ssh root@tbh.lerctr.org. >> __Martin > Ooo, good point. Would csh vs. sh make a difference? Doesn't seem to make a difference.... # 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 # -- Larry Rosenman http://www.lerctr.org/~ler Phone: +1 214-642-9640 (c) E-Mail: ler@lerctr.org US Mail: 430 Valona Loop, Round Rock, TX 78681-3893
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