Any idea why I'd see drops on an interface?
mini@ykaul-mini:~/ovirt-system-tests$ sudo virsh domifstat 111 vnet1
vnet1 rx_bytes 25488
vnet1 rx_packets 387
vnet1 rx_errs 0
vnet1 rx_drop 1424
vnet1 tx_bytes 5751
vnet1 tx_packets 39
vnet1 tx_errs 0
vnet1 tx_drop 0
I have several others VMs in the same host, pretty much identically configured, all are fine, all on the same bridge:
mini@ykaul-mini:~/ovirt-system-tests$ sudo brctl show
bridge name bridge id STP enabled interfaces
5e85-930e31b 8000.525400247745 yes 5e85-93031b-nic
vnet0
vnet1
vnet2
vnet3
vnet4
virbr0 8000.5254005e7e4b yes virbr0-nic
Network (host0 is the problematic one):
virsh # net-dumpxml 5e85-930e31b9b9
<network connections='5'>
<name>5e85-930e31b9b9</name>
<uuid>6f52f5a8-5322-4b57-890e-d4d5a0a7ed50</uuid>
<forward mode='nat'>
<nat>
<port start='1024' end='65535'/>
</nat>
</forward>
<bridge name='5e85-930e31b' stp='on' delay='0'/>
<mac address='52:54:00:24:77:45'/>
<dns forwardPlainNames='yes'/>
<ip address='192.168.200.1' netmask='255.255.255.0'>
<dhcp>
<range start='192.168.200.100' end='192.168.200.254'/>
<host mac='54:52:c0:a8:c8:04' name='lago_basic_suite_3_6_host1' ip='192.168.200.4'/>
<host mac='54:52:c0:a8:c8:03' name='lago_basic_suite_3_6_engine' ip='192.168.200.3'/>
<host mac='54:52:c0:a8:c8:02' name='lago_basic_suite_3_6_storage-iscsi' ip='192.168.200.2'/>
<host mac='54:52:c0:a8:c8:05' name='lago_basic_suite_3_6_storage-nfs' ip='192.168.200.5'/>
<host mac='54:52:c0:a8:c8:06' name='lago_basic_suite_3_6_host0' ip='192.168.200.6'/>
</dhcp>
</ip>
</network>
Domain XML attached.
Running libvirt 1.2.18, on latest F23.
TIA,
Y.
<domain type='kvm' id='111'>
<name>5e8574ee-lago_basic_suite_3_6_host0</name>
<uuid>d3d2ccca-3615-42f7-a409-198879e95ee1</uuid>
<memory unit='KiB'>8387584</memory>
<currentMemory unit='KiB'>8387584</currentMemory>
<vcpu placement='static'>2</vcpu>
<resource>
<partition>/machine</partition>
</resource>
<os>
<type arch='x86_64' machine='pc-i440fx-2.4'>hvm</type>
<bootmenu enable='yes'/>
</os>
<features>
<acpi/>
<apic/>
<pae/>
</features>
<cpu mode='host-passthrough'>
<topology sockets='2' cores='1' threads='1'/>
</cpu>
<clock offset='utc'>
<timer name='kvmclock'/>
<timer name='hpet'/>
</clock>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<devices>
<emulator>/usr/bin/qemu-kvm</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source file='/home/zram/3.6/default/images/lago_basic_suite_3_6_host0_root.1458136856'/>
<backingStore type='file' index='1'>
<format type='raw'/>
<source file='/home/zram/3.6/default/images/lago_basic_suite_3_6_host0_root.qcow2'/>
<backingStore/>
</backingStore>
<target dev='vda' bus='virtio'/>
<boot order='1'/>
<alias name='virtio-disk0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
</disk>
<controller type='usb' index='0'>
<alias name='usb'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
</controller>
<controller type='pci' index='0' model='pci-root'>
<alias name='pci.0'/>
</controller>
<controller type='virtio-serial' index='0'>
<alias name='virtio-serial0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
</controller>
<interface type='network'>
<mac address='54:52:c0:a8:c8:06'/>
<source network='5e85-930e31b9b9' bridge='5e85-930e31b'/>
<target dev='vnet1'/>
<model type='virtio'/>
<alias name='net0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>
<serial type='pty'>
<source path='/dev/pts/2'/>
<target port='0'/>
<alias name='serial0'/>
</serial>
<console type='pty' tty='/dev/pts/2'>
<source path='/dev/pts/2'/>
<target type='serial' port='0'/>
<alias name='serial0'/>
</console>
<channel type='unix'>
<source mode='bind' path='/var/lib/libvirt/qemu/channel/target/5e8574ee-lago_basic_suite_3_6_host0.org.qemu.guest_agent.0'/>
<target type='virtio' name='org.qemu.guest_agent.0' state='connected'/>
<alias name='channel0'/>
<address type='virtio-serial' controller='0' bus='0' port='1'/>
</channel>
<input type='mouse' bus='ps2'/>
<input type='keyboard' bus='ps2'/>
<graphics type='vnc' port='5901' autoport='yes' listen='0.0.0.0' keymap='en-us'>
<listen type='address' address='0.0.0.0'/>
</graphics>
<video>
<model type='cirrus' vram='16384' heads='1'/>
<alias name='video0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
</video>
<memballoon model='none'>
<alias name='balloon0'/>
</memballoon>
<rng model='virtio'>
<backend model='random'>/dev/random</backend>
<alias name='rng0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x09' function='0x0'/>
</rng>
</devices>
</domain>
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