SCP Data transfer got stuck in 90% for a 30-40 seconds

Hi Rezaul Karim,

• I am curious, what version of RHEL you are using?
• Did someone make undisclosed-to-you network changes someplace from the originating system, including the switch (or switches, plural), or the system you are sending the data to?
• While this specific link is an old solution, please examine it
• Is there sufficient space on the target server you are performing the scp command to? Is the file system filling up during the send of data and failing--I've seen this happen in other situations)
• Have you tried an rsync command instead? Also, have you tried an IP address instead of the hostname?
• Just in general, make sure your /etc/resolv.conf is good so that if you are using hostnames, DNS works right to resolve your host (sure, you get to 90%).
• Can you on the system you wish to send data to - perform write speed tests from one filesystem to another (without scp, without rsync, namely, a write speed test within the system itself to see how that goes?
• Evaluate how this goes if you attempt the rsync or scp from a different originating system?
• Double check the /var/log/messages on both systems during/after this occurs in case something else is happening.
• Is the target file system a storage appliance, or a RAID system, or just a normal traditional file system?
• Is the target file system a virtual (i.e. VMware, or RHEV) or physical system? see this https://access.redhat.com/solutions/3409921
• Double check the network configuration on both systems?
• Do a tcpdump during transfer and evaluate the results in wireshark for the stalled areas

Has this worked before and this time it is not?

Regards,
RJ