Re: rsync w/ openssh hangs on linux
Wow, that's a new one. It's quite surprising that that would cause the symptoms you described, but I think I can imagine how. The remote end would ignore the -e ssh, but it's possible that the -ax could result in different information being passed back and forth after the large file is sent if the sender didn't specify the same options. The rsync protocol is optimized to send the minimum amount of data back and forth and as a result it assumes that both sides know exactly where the other is in the exchange, and if even one byte gets out of sync it can be hopelessly confused. In general it's almost always a bad idea for a remote shell to do anything in a user startup script. - Dave On Fri, Jan 04, 2002 at 02:59:15PM -0800, J Robinson wrote: Hello Everyone I was able to track this problem down -- I had a tcsh 'alias' on the remote side that expanded 'rsync' to 'rsync -e ssh -ax', and that seems to have been the cause of the symptoms I describe below (which only occurred with certain files). Thanks to all for their help! jrobinson On Fri, Jan 04, 2002 at 11:29:13AM -0800, J Robinson wrote: Hello All: I've having repeatable problems copying files between linux machines using rsync-2.5.1 and various recent flavors of openssh. The symptom when testing with a single 2M file is that rsync hangs when when the file is 97% transferred. __ Do You Yahoo!? Send your FREE holiday greetings online! http://greetings.yahoo.com
rsync w/ openssh hangs on linux
Hello All: I've having repeatable problems copying files between linux machines using rsync-2.5.1 and various recent flavors of openssh. The symptom when testing with a single 2M file is that rsync hangs when when the file is 97% transferred. It seems from looking at various archives that this problem may be non-trivial. I tried applying the patch at http://www.clari.net/~wayne/rsync-nohang.patch to rsync-2.5.1, (even though it's for 2.5.0) but it didn't seem to make things any better. I'm wondering if there are any tips to get around this problem or ??? Thanks! jrobinson __ Do You Yahoo!? Send your FREE holiday greetings online! http://greetings.yahoo.com
Re: rsync w/ openssh hangs on linux
On Fri, Jan 04, 2002 at 11:29:13AM -0800, J Robinson wrote: Hello All: I've having repeatable problems copying files between linux machines using rsync-2.5.1 and various recent flavors of openssh. The symptom when testing with a single 2M file is that rsync hangs when when the file is 97% transferred. It seems from looking at various archives that this problem may be non-trivial. I tried applying the patch at http://www.clari.net/~wayne/rsync-nohang.patch to rsync-2.5.1, (even though it's for 2.5.0) but it didn't seem to make things any better. I'm wondering if there are any tips to get around this problem or ??? I don't believe anybody else has reported a problem quite like that lately. First, give us the output of netstat -a on both sides for the relevant connection so we can see if there is data in a send queue somewhere that's not being sent; that could indicate a TCP implementation problem which rsync has a great tendency to expose because of the way it stresses TCP. Please try to give us as much information as you can so somebody else could possibly repeat it, including exact versions of all software involved on both sides, the speed of your network, and the exact command you're using. - Dave Dykstra
Re: rsync w/ openssh hangs on linux
It seems similar to Ed Santiago's problem. http://lists.samba.org/pipermail/rsync/2001-December/005511.html This also seems similar to what I reported last month. http://lists.samba.org/pipermail/rsync/2001-December/005628.html I had to go back to 2.4.6dev+waynenohang. That works for me. I run solaris/linux hosts. I'll try 2.5.1 again, but I'm pretty sure there is still a timing/IPC issue. eric Dave Dykstra wrote: On Fri, Jan 04, 2002 at 11:29:13AM -0800, J Robinson wrote: Hello All: I've having repeatable problems copying files between linux machines using rsync-2.5.1 and various recent flavors of openssh. The symptom when testing with a single 2M file is that rsync hangs when when the file is 97% transferred. It seems from looking at various archives that this problem may be non-trivial. I tried applying the patch at http://www.clari.net/~wayne/rsync-nohang.patch to rsync-2.5.1, (even though it's for 2.5.0) but it didn't seem to make things any better. I'm wondering if there are any tips to get around this problem or ??? I don't believe anybody else has reported a problem quite like that lately. First, give us the output of netstat -a on both sides for the relevant connection so we can see if there is data in a send queue somewhere that's not being sent; that could indicate a TCP implementation problem which rsync has a great tendency to expose because of the way it stresses TCP. Please try to give us as much information as you can so somebody else could possibly repeat it, including exact versions of all software involved on both sides, the speed of your network, and the exact command you're using. - Dave Dykstra
Re: rsync w/ openssh hangs on linux
On 4 Jan 2002, Dave Dykstra [EMAIL PROTECTED] wrote: Well I don't see anything in the send queues so that's not likely to be the problem. It doesn't seem likely that anybody else would be able to easily reproduce your setup. I suspect your Internet Sharing setup since you have also experienced web sites stalling. PPPOE in combination with masquerading often causes problems to do with packet MTU with similar symptoms: heavily used connections hang during transfers. I don't know if this would be a problem with WinPOET. You could try # ifconfig eth0 mtu 1200 on the firewalled Linux box. -- Martin
