We back up via a cron job using tar via a campus to campus dedicated fiber line. We get this error about 4 out of 5 times the job runs: May 8 01:08:10 ourserver kernel: cifs_vfs_err: 2 callbacks suppressed May 8 01:08:10 ourserver kernel: CIFS VFS: Server ourserver has not responded in 120 seconds. Reconnecting... May 8 01:10:01 ourserver kernel: CIFS VFS: sends on sock ffff9f2900764f00 stuck for 15 seconds May 8 01:10:01 ourserver kernel: CIFS VFS: Error -11 sending data on socket to server May 8 01:10:45 ourserver kernel: CIFS VFS: sends on sock ffff9f2900764f00 stuck for 15 seconds May 8 01:10:45 ourserver kernel: CIFS VFS: Error -11 sending data on socket to server This is on Fedora 25. I saw this 2013 thread, http://linux-cifs.vger.kernel.narkive.com/qolENUBe/errors-writing-large-files-to-cifs-shares which mentions Bufferbloat. Is there a way to perhaps tune a kernel parameter in /etc/sysctl.conf?-- To unsubscribe from this list: send the line "unsubscribe linux-cifs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
