Re: Git hangs at “Writing objects: 11%”

On Mon, 28 May 2012, Timothy Normand Miller wrote:

I tried uploading a file via sftp, and it stalls out at 160K.  So this 
is the cause of the problem.  SSH is broken.  Unfortunately, googling 
for ssh and stall isn't getting me anywhere.

Not sure if this is the same issue you're seeing or not, but I ran into 
something similar a while ago - when connected from less reliable 
networks, connections (especially rsync or scp) over SSH stalled after a 
short while - interactive sessions worked fine.

In my case, the issue was a too pedantic iptables configuration. When 
communicating with the server from a less reliable network, packets could 
arrive out of order. If the server received packets that 
iptables/conntrack didn't think belonged to the session, my config sent 
ICMP unreachable packets as response (-j REJECT), basically terminating 
the connection.

I fixed it by adjusting the iptables config to not send ICMP unreachable 
for this case. An alternative solution was to set sysctl 
"net.netfilter.nf_conntrack_tcp_be_liberal = 1" - this made the out of 
order packets still be counted as part of the session, not triggering the 
bad behaviour of my iptables config.

Again, not sure if this is related to your issue or not, but it at least a 
similar symptom.

// Martin