Re: [CentOS] SFTP - stalled - on large files

>> # Turn off SACK >> net.ipv4.tcp_sack = 0 > > and execute "sysctl -p" to apply it.  You can also use "sysctl -w > net.ipv4.tcp_sack=0" to turn it off temporarily.  Our file transfers worked > just fine after the change. > > I realize there are differences our situation and yours and this might no

Re: [CentOS] SFTP - stalled - on large files

We had a similar problem copying files between servers on two of our campuses via SCP. After a while the connection just stalled out and hung. The problem turned out to be SCP and SFTP interacting a bug in the SACK (Selective Acknowledgment) algorithm used in Linux. We turned it off on the t

Re: [CentOS] SFTP - stalled - on large files

> Load balancer... is that set up to maintain connections, or will it, like > IBM's > WebSeal, go to whichever server is next/least used in the middle of a > connection? It's set to use "least connection" but there is only one server behind the virtual IP at the moment. I'm reasonably sure at t

Re: [CentOS] SFTP - stalled - on large files

> Just an idea or thought on it.  You never said what the file size was or did > you?  My idea is that is, there not a file size limitation on transfer to > and from the server?  I thought there was?  Check you vsftpd.conf out or > what ever ftp server your running for the size limitation.  Maybe s

Re: [CentOS] SFTP - stalled - on large files

Sean Carolan wrote: > At this point I don't know what else to try. I'm thinking that it's > either a problem with VMWare, or perhaps our load balancer that is > routing the packets back and forth. Hopefully one of the vendors will Load balancer... is that set up to maintain connections, or will

Re: [CentOS] SFTP - stalled - on large files

Sean Carolan wrote on Tue, 22 Dec 2009 05:12:52 -0600: > Here's the short list of > what I've tried to troubleshoot this: which means it doesn't only fail for your client from outside but also for you from within your network? Kai -- Kai Schätzl, Berlin, Germany Get your web at Conactive Inte

Re: [CentOS] SFTP - stalled - on large files

> -Original Message- > From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On > Behalf Of Sean Carolan > Sent: Tuesday, December 22, 2009 6:13 AM > To: CentOS mailing list > Subject: Re: [CentOS] SFTP - stalled - on large files > > > Tell him t

Re: [CentOS] SFTP - stalled - on large files

> Tell him to switch WinSCP to SCP mode. > > Kai Tried that, it still fails the same way. Here's the short list of what I've tried to troubleshoot this: Used SCP via the gui and command line Used SFTP via the gui and command line Ran yum update to bring all packages up to date Tried stock CentOS

Re: [CentOS] SFTP - stalled - on large files

Sean Carolan wrote on Tue, 22 Dec 2009 03:08:53 -0600: > The software the client is > using is WinSCP which does have a restart feature, however it's not > working for us. Tell him to switch WinSCP to SCP mode. Kai -- Kai Schätzl, Berlin, Germany Get your web at Conactive Internet Services: ht

Re: [CentOS] SFTP - stalled - on large files

> I'm not sure what would cause that, but I'd use rsync over ssh instead of sftp > anyway - and use the -P option to permit restarting. If it were up to me, we'd take that route. The software the client is using is WinSCP which does have a restart feature, however it's not working for us. I'm wo

Re: [CentOS] SFTP - stalled - on large files

Sean Carolan wrote: > On Mon, Dec 21, 2009 at 7:06 PM, 唐建伟 > wrote: > > I met the same as you, but always due to the bad network connection. > > > I should probably provide some more information, the server is a VMware > guest running CentOS 5.3. It's using the v

Re: [CentOS] SFTP - stalled - on large files

On Mon, Dec 21, 2009 at 7:06 PM, 唐建伟 wrote: > I met the same as you, but always due to the bad network connection. > I should probably provide some more information, the server is a VMware guest running CentOS 5.3. It's using the vmxnet driver for the eth0 connection. IPv6 is disabled. __

Re: [CentOS] SFTP - stalled - on large files

I met the same as you, but always due to the bad network connection. On 12/21/09, Sean Carolan wrote: > I have an SSH server that was set up for a client, and every time we > try to upload large files via SFTP or scp, the transfers speed quickly > slows to zero and gives a - stalled - status me

[CentOS] SFTP - stalled - on large files

I have an SSH server that was set up for a client, and every time we try to upload large files via SFTP or scp, the transfers speed quickly slows to zero and gives a - stalled - status message, then disconnects. Here is an example: ftp> put iTunesSetup.exe iTunesSetup.exe Uploading iTunesSetup.ex