Messages in this thread | | | Date | Wed, 09 Apr 2008 12:46:21 -0400 | From | Jeff Garzik <> | Subject | Re: 2.6.25-rc8: FTP transfer errors |
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Mark Lord wrote: > Mark Lord wrote: >> Today I've been using 2.6.25-rc8 with an old embedded build system here >> for my empegs. One shell script calls out to /usr/bin/ftp to transfer >> an image to a remote system, and then read it back again and compare. >> >> The compare is failing, most (but not all) of the time, >> but only on 2.6.25-rc8, not on 2.6.24. Verified by switching >> back and forth between kernel versions for a short spell. >> >> The ftp client is netkit-ftp 0.17-16 on Kubuntu feisty. >> >> Switching to ncftpput/ncftpget avoids it on 2.6.25, >> but I wonder where the problem is. > .. > > Now verified that the data loss occurs in the outbound direction. > The readback data is the same, regardless of which client s/w is used. > > So something in 2.6.25 is incompatible with the ftp client binary, or libs, > that are installed here. Or some other problem.
Or maybe it uses sendfile, and that is broken?
Also, try using ethtool to turn off TSO and/or checksumming on your NIC (if it is not wireless), and see if behavior changes...
Jeff
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