On 09/23/2013 03:31 PM, Paul Robert Marino wrote:
In general link speeds are fast enough that TCP is preferred for NFS. The UDP transport is a vestige of running NFS over network connections that were slower than the disk they would read and write from nowadays the reverse is generally true and TCP is the safer transport method.
To be a bit more specific, on modern networks NFS over UDP is susceptible to fragment-ID wraparound which could lead to data corruption. This has been well known since at least 2006[1]. On modern machines the difference in processing time between TCP and UDP is negligible, so there's just no good reason to take that risk. BTW, I've been using/developing NFS since v2 in 1990, when the difference really might have mattered. If I can see that NFS over UDP is past its sell-by date, so can anybody else. ;)
[1] http://nfsworld.blogspot.com/2006_03_01_archive.html _______________________________________________ Gluster-users mailing list [email protected] http://supercolony.gluster.org/mailman/listinfo/gluster-users
