Hello helpful people :)
I'm trying to speed up my NAS server's network speed. So I decided to bond two 1GBit NICs in the server.
The NAS itself is running as a KVM on that server. I'm using virt-manager to manage the VM.
Network settings in virt-manager are as follows:
"Network source: Bridge br1: Host device bond0"
"Device model rtl8139"
"Mac address: 52:54:00:10:bf:ac"
Here is the host's /etc/network/interfaces/file
Now the problem is that the KVM does not get a network connection via the bridge like it did before when I wasn't using the bonded network interfaces.
The output of ip addr on the host before I start the VM
IP addr on the host after I started the VM:
The output of ip addr in the VM before I unplug the cable:
When I unplug the cable of enp66s0, it says 'copper link is down' and all connections break. (SSH to the host, a ping running on the host to google or any network device starts to fail, ping inside the VM starts to fail).
If I unplug enp4s0, nothing happens (it doensn't say that the copper link is down).
When I shut down the VM, ip addr on the host looks like this
But the behaviour when unplugging enp66s0 is still that the ping on the host breaks and disconnect of enp4s0 is not recognized.12
So the bonding does not work anymore when the VM was running once.
What could be wrong?
I'm trying to speed up my NAS server's network speed. So I decided to bond two 1GBit NICs in the server.
The NAS itself is running as a KVM on that server. I'm using virt-manager to manage the VM.
Network settings in virt-manager are as follows:
"Network source: Bridge br1: Host device bond0"
"Device model rtl8139"
"Mac address: 52:54:00:10:bf:ac"
Here is the host's /etc/network/interfaces/file
Code:
auto bond0
iface bond0 inet manual
bond-lacp-rate 1
post-up ifenslave bond0 enp66s0 enp4s0
pre-down ifenslave -d bond0 enp66s0 enp4s0
bond-slaves none
bond mode 0
bond-lacp-rate fast
bond-miimon 100
bond-downdelay 0
bond-updelay 0
bond-xmit_hash_policy 1
auto enp4s0
iface enp4s0 inet manual
bond-master bond0
auto enp66s0
iface enp66s0 inet manual
bond-master bond0
auto br1
iface br1 inet dhcp
bridge-ports bond0
bridge-fd 9
bridge-hello 2
bridge-maxage 12
bridge-stp onNow the problem is that the KVM does not get a network connection via the bridge like it did before when I wasn't using the bonded network interfaces.
The output of ip addr on the host before I start the VM
Code:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp4s0: <BROADCAST,MULTICAST> mtu 1500 qdisc mq state DOWN group default qlen 1000
link/ether 00:23:7d:21:92:be brd ff:ff:ff:ff:ff:ff
3: enp66s0: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc mq master bond0 state UP group default qlen 1000
link/ether 00:23:7d:21:92:bc brd ff:ff:ff:ff:ff:ff
4: bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 1500 qdisc noqueue master br1 state UP group default qlen 1000
link/ether 00:23:7d:21:92:bc brd ff:ff:ff:ff:ff:ff
inet6 fe80::223:7dff:fe21:92bc/64 scope link
valid_lft forever preferred_lft forever
5: br1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 00:23:7d:21:92:bc brd ff:ff:ff:ff:ff:ff
inet 192.168.4.132/24 brd 192.168.4.255 scope global br1
valid_lft forever preferred_lft forever
inet6 fe80::223:7dff:fe21:92bc/64 scope link
valid_lft forever preferred_lft forever
6: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
link/ether 52:54:00:c7:4d:0e brd ff:ff:ff:ff:ff:ff
inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0
valid_lft forever preferred_lft forever
7: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc fq_codel master virbr0 state DOWN group default qlen 1000
link/ether 52:54:00:c7:4d:0e brd ff:ff:ff:ff:ff:ffIP addr on the host after I started the VM:
Code:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp4s0: <BROADCAST,MULTICAST> mtu 1500 qdisc mq state DOWN group default qlen 1000
link/ether 00:23:7d:21:92:be brd ff:ff:ff:ff:ff:ff
3: enp66s0: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc mq master bond0 state UP group default qlen 1000
link/ether 00:23:7d:21:92:bc brd ff:ff:ff:ff:ff:ff
4: bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 1500 qdisc noqueue master br1 state UP group default qlen 1000
link/ether 00:23:7d:21:92:bc brd ff:ff:ff:ff:ff:ff
inet6 fe80::223:7dff:fe21:92bc/64 scope link
valid_lft forever preferred_lft forever
5: br1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 00:23:7d:21:92:bc brd ff:ff:ff:ff:ff:ff
inet 192.168.4.132/24 brd 192.168.4.255 scope global br1
valid_lft forever preferred_lft forever
inet6 fe80::223:7dff:fe21:92bc/64 scope link
valid_lft forever preferred_lft forever
6: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
link/ether 52:54:00:c7:4d:0e brd ff:ff:ff:ff:ff:ff
inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0
valid_lft forever preferred_lft forever
7: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc fq_codel master virbr0 state DOWN group default qlen 1000
link/ether 52:54:00:c7:4d:0e brd ff:ff:ff:ff:ff:ff
8: vnet0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel master br1 state UNKNOWN group default qlen 1000
link/ether fe:54:00:10:bf:ac brd ff:ff:ff:ff:ff:ff
inet6 fe80::fc54:ff:fe10:bfac/64 scope link
valid_lft forever preferred_lft foreverThe output of ip addr in the VM before I unplug the cable:
Code:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: ens3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 52:54:00:10:bf:ac brd ff:ff:ff:ff:ff:ff
inet 192.168.4.195/24 brd 192.168.4.255 scope global ens3
valid_lft forever preferred_lft foreverWhen I unplug the cable of enp66s0, it says 'copper link is down' and all connections break. (SSH to the host, a ping running on the host to google or any network device starts to fail, ping inside the VM starts to fail).
If I unplug enp4s0, nothing happens (it doensn't say that the copper link is down).
When I shut down the VM, ip addr on the host looks like this
Code:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp4s0: <BROADCAST,MULTICAST> mtu 1500 qdisc mq state DOWN group default qlen 1000
link/ether 00:23:7d:21:92:be brd ff:ff:ff:ff:ff:ff
3: enp66s0: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc mq master bond0 state UP group default qlen 1000
link/ether 00:23:7d:21:92:bc brd ff:ff:ff:ff:ff:ff
4: bond0: <BROADCAST,MULTICAST,MASTER,UP,LOWER_UP> mtu 1500 qdisc noqueue master br1 state UP group default qlen 1000
link/ether 00:23:7d:21:92:bc brd ff:ff:ff:ff:ff:ff
inet6 fe80::223:7dff:fe21:92bc/64 scope link
valid_lft forever preferred_lft forever
5: br1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000
link/ether 00:23:7d:21:92:bc brd ff:ff:ff:ff:ff:ff
inet 192.168.4.132/24 brd 192.168.4.255 scope global br1
valid_lft forever preferred_lft forever
inet6 fe80::223:7dff:fe21:92bc/64 scope link
valid_lft forever preferred_lft forever
6: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
link/ether 52:54:00:c7:4d:0e brd ff:ff:ff:ff:ff:ff
inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0
valid_lft forever preferred_lft forever
7: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc fq_codel master virbr0 state DOWN group default qlen 1000
link/ether 52:54:00:c7:4d:0e brd ff:ff:ff:ff:ff:ffBut the behaviour when unplugging enp66s0 is still that the ping on the host breaks and disconnect of enp4s0 is not recognized.12
So the bonding does not work anymore when the VM was running once.
What could be wrong?