"net_ratelimit" message in syslog, then network connections crash

  • When I try to copy a few GBytes of files to OMV, within a few minutes the network connections stop with no warnings, but the console is still alive. The syslog has a "net_ratelimit" message and then a few more "eth0: link up" messages, and then no further network access. At this point I go to the console and reboot.


    Note this only happens when I copy files from a PC that has a Gbit ethernet - the OMV box also has Gbit ethernet. The data flows at around 500 Gbps until the network crash.


    The syslog has:
    Feb 28 16:04:48 OMV kernel: [ 4519.512278] r8169 0000:03:00.0: eth0: link up
    Feb 28 16:04:54 OMV kernel: [ 4525.200285] net_ratelimit: 21 callbacks suppressed
    Feb 28 16:04:54 OMV kernel: [ 4525.200296] r8169 0000:03:00.0: eth0: link up
    ... about 5 more "link up"


    A google search for "net_ratelimit" says to increase some TCP buffers in sysctl.conf, but this has had no effect.
    net.core.rmem_max = 67108864
    net.core.wmem_max = 67108864
    net.ipv4.tcp_rmem = 4096 87380 6710886
    4net.ipv4.tcp_wmem = 4096 65536 67108864


    System is: OMV version 1.9 on an AMD Athlon II X2 250, 4GB ram, system is 500GB SATA HDD, and two data 3TB SATA drives


    Any suggestions? Thanks

  • Updating to the 3.16 kernel (from 3.2) fixed the Gb network problems.


    And dmesg only has boot time messages, and nothing unusual appeared.


    And "Get an Intel NIC..." is just stupid - maybe there should be a warning in the install pages about non-Intel NICs? And this remark came from a mod???

    • Offizieller Beitrag

    I presumed the OMV download would mostly work out of the box with just the automatic updates


    OMV works with Debian Wheezy packages. The kernel 3.16 is backported to Wheezy (it will be the the one for Jessie) and is not part of the standard security repo. Is an optional install from omv-extras.


    A standard update of wheezy will never upgrade the kernel 3.2 from 3.16. You'll have to look at the changelog to see what changed in that driver.

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