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Marco
Asked: 2013-07-23 03:58:56 +0800 CST

high bandwidth usage iscsid, who's doing it?

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We run a couple of onapp nodes that connect through iSCSI to a SAN. This is now using up all bandwidth and we want to know where it is coming from, we have been search for days now and would like to ask the community.

iftop:

 x.x.x.x  => y.y.y.y  279Mb   239Mb   239Mb
          <=          7.09Mb  5.74Mb  5.74Mb

If you need any information, please leave a comment.

bandwidth

2 Answers

  1. I have no idea about ONAPP, but if you have virsh, you can get traffic statistics like so: 

    virsh domifstat <domname> <ifname>

    and if you don't even know the interface names, you get them with 

    virsh domiflist <domname>

    Example: 

    #> virsh domifstat myvm vnet2
vnet2 rx_bytes 3684910384
vnet2 rx_packets 29540870
vnet2 rx_errs 0
vnet2 rx_drop 0
vnet2 tx_bytes 1444997265
vnet2 tx_packets 12615196
vnet2 tx_errs 0
vnet2 tx_drop 0
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  2. Best Answer

    The problem was a full disk in one of the storage servers, it was trying over and over, so check your disks!

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