Red Hat Bugzilla – Bug 1463377
rear won't backup network config
Last modified: 2017-08-16 12:50:10 EDT
Created attachment 1289743 [details] /bin/rear -d -v mkbackup Description of problem: ~~~~~~~~~~~~~~~~~~~~~~~ I have successfully created a ReaR backup (rear -d -v mkbackup )and restored it to new hard drive but it doesn't contain network configuration (/etc/sysconfig/network-scripts is empty) when I am in recover/rescue mode. I created /etc/rear/site.conf and added this line prior to running the backup: USE_STATIC_NETWORKING=y but it didn't work. During recovery (rear recover) I had to run : o ip addr add 10.106.51.20/24 dev bond0.441 o ip route add 10.106.6.172 via 10.106.51.1 in order for the restore to work. What am I doing wrong? Version-Release number of selected component (if applicable): ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ rear-1.17.2-4.el6.x86_64 Thu Jun 30 09:16:41 2016
The issue comes from the way the bridge "br0" is set up in /etc/scripts/system-setup.d/60-network-devices.sh: ip addr add 10.106.51.20/27 dev br0 ip link set dev br0 up ip link set dev br0 mtu 1500 The "br0" device doesn't exist unless the corresponding "brctl" command is used. They are 2 issues here: 1. "brctl" utility is not part of the rescue image 2. "brctl addbr br0" is missing in 60-network-devices.sh
Created attachment 1295709 [details] Patch proposal including basic bridged interface support This patch has been successfully tested with the following configuration: 1. eth0 + eth1 bonded as bond0 (no IP address) 2. bond0.441 configured as vlan441 on bond0 (no IP address) 3. br0 configured as a bridge on bond0.441 (with IP address) For now, only STP is configured for the bridge interface. This should be sufficient. The brctl utility is includes as REQUIRED_PROGS automatically upon need. The resulting /rootfs/etc/scripts/system-setup.d/60-network-devices.sh file is as follows: if [ ! -d /sys/class/net/br0/bridge ]; then brctl addbr br0 brctl stp br0 no fi ip addr add xxx/xx dev br0 ip link set dev br0 up ip link set dev br0 mtu 1500 ip link set dev eth0 up ip link set dev eth0 mtu 1500 ip link set dev eth1 up ip link set dev eth1 mtu 1500 modprobe bonding max_bonds=1 miimon=100 mode=1 use_carrier=0 ip link set dev bond0 up ifenslave bond0 eth0 eth1 sleep 5 modprobe 8021q sleep 5 ip link add link bond0 name bond0.441 type vlan id 441 if [ ! -d /sys/class/net/br0/bridge ]; then brctl addbr br0 brctl stp br0 no fi brctl addif br0 bond0.441 ip link set dev bond0.441 up