On my intranet, I sometimes transfer large files, about 4G, to an CentOS old box that I use for a web server. I transfer with ftp or sftp. Usually, before the file is complete, the transfer "stalls". At that point, ping from the destination box to the router fails. I then deactivate the net interface on the destination box and then activate it. Ping is then successful, and the transfer is completed. The transferred file is correct, as verified with sha1sum. All connections are via cat6 wire. So what do you think? Should I try changing the net card? Any tests to run? Any other suggestions? Thanks for your help. Mike.
On 20/11/10 8:16 AM, Michael D. Berger wrote:> On my intranet, I sometimes transfer large files, about 4G, > to an CentOS old box that I use for a web server. I transfer > with ftp or sftp.Have you tried scp or rsync? Regards, Ben -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 259 bytes Desc: OpenPGP digital signature URL: <http://lists.centos.org/pipermail/centos/attachments/20101120/392a1aba/attachment-0001.sig>
On Fri, Nov 19, 2010 at 4:16 PM, Michael D. Berger <m_d_berger_1900 at yahoo.com> wrote:> On my intranet, I sometimes transfer large files, about 4G, > to an CentOS old box that I use for a web server. ?I transfer > with ftp or sftp. ?Usually, before the file is complete, the > transfer "stalls". ?At that point, ping from the destination box > to the router fails. ?I then deactivate the net interface on the > destination box and then activate it. ?Ping is then successful, > and the transfer is completed. ?The transferred file is correct, > as verified with sha1sum. > > All connections are via cat6 wire. > > So what do you think? ?Should I try changing the net card? > Any tests to run? Any other suggestions? >It could be buffering the transfer then writing it. I notice this on a small xen image I use as a file server.
On 11/19/10 3:16 PM, Michael D. Berger wrote:> On my intranet, I sometimes transfer large files, about 4G, > to an CentOS old box that I use for a web server. I transfer > with ftp or sftp. Usually, before the file is complete, the > transfer "stalls". At that point, ping from the destination box > to the router fails. I then deactivate the net interface on the > destination box and then activate it. Ping is then successful, > and the transfer is completed. The transferred file is correct, > as verified with sha1sum. > > All connections are via cat6 wire. > > So what do you think? Should I try changing the net card? > Any tests to run? Any other suggestions?I haven't seen anything like that, at least in many years so it probably is hardware related - but make sure your software is up to date. As a workaround, you might try using rsync with the --bwlimit option to limit the speed of the transfer - and the -P option so you can restart a failed transfer from the point it stalled on the last attempt. -- Les Mikesell lesmikesell at gmail.com