rhel/usr_share_openvswitch_scripts_ovs-kmod-manage.sh

   1 #!/bin/sh
   2
   3 # Copyright (c) 2018 Nicira/VMware, Inc.
   4 #
   5 # Licensed under the Apache License, Version 2.0 (the "License");
   6 # you may not use this file except in compliance with the License.
   7 # You may obtain a copy of the License at:
   8 #
   9 #     http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 # Unless required by applicable law or agreed to in writing, software
  12 # distributed under the License is distributed on an "AS IS" BASIS,
  13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 # See the License for the specific language governing permissions and
  15 # limitations under the License.
  16
  17 # This script is intended to be used on the following kernels.
  18 #   - 3.10.0 major revision 327 (RHEL 7.2)
  19 #   - 3.10.0 major revision 693 (RHEL 7.4)
  20 #   - 3.10.0 major revision 957 (RHEL 7.6)
  21 #   - 4.4.x,  x >= 73           (SLES 12 SP3)
  22 #   - 4.12.x, x >= 14           (SLES 12 SP4).
  23 # It is packaged in the openvswitch kmod RPM and run in the post-install
  24 # scripts.
  25 #
  26 # For kernel 3.10.0-957,
  27 # due to some backward incompatible changes introduced in minor revision 12.1,
  28 # kernel modules built against kernels newer than 12.1 cannot be loaded on
  29 # system running kernels older than 12.1, vice versa.
  30 #
  31 # For kernel 3.10.0-693,
  32 # due to some backward incompatible changes introduced in minor revision 17.1,
  33 # kernel modules built against kernels newer than 17.1 cannot be loaded on
  34 # system running kernels older than 17.1, vice versa.
  35 #
  36 # For kernel 3.10.0-327,
  37 # due to some backward incompatible changes introduced in minor revision 41.3,
  38 # kernel modules built against kernels newer than 41.3 cannot be loaded on
  39 # system running kernels older than 41.3, vice versa.
  40 #
  41 # For kernel >= 4.4.73,
  42 # kernel modules built with 4.4.73 can run on systems with kernel versions from
  43 # 4.4.73 to 4.4.114; modules built against 4.4.120 can run on systems from
  44 # 4.4.120 onwards.
  45 #
  46 # For kernel 4.12.x, x>=14,
  47 # kernel modules built with the oldest compatible kernel 4.12.14-94.41.1 can
  48 # run on all versions onwards.
  49 #
  50 # This script checks the current running kernel version, and update symlinks
  51 # for the openvswitch kernel modules in the appropriate kernel directory,
  52 # provided the kmod RPM has installed kernel modules files built from both
  53 # minor revisions.
  54 #
  55 # In case of a kernel minor revision change after the openvswitch kmod package
  56 # is installed, this script shall be run manually after system reboots and
  57 # switches to a different kernel
  58 if [ -n "$(rpm -qa kmod-openvswitch)" ]; then
  59     rpmname="kmod-openvswitch"
  60 elif [ -n "$(rpm -qa openvswitch-kmod)" ]; then
  61     rpmname="openvswitch-kmod"
  62 else
  63     echo "openvswitch kmod package not installed, existing"
  64     exit 1
  65 fi
  66 #echo $rpmname
  67 script_name=$(basename -- "$0")
  68 current_kernel=$(uname -r)
  69 echo current kernel is $current_kernel
  70
  71 IFS='.\|-' read mainline_major mainline_minor mainline_patch major_rev \
  72     minor_rev _extra <<<"${current_kernel}"
  73 # echo mainline_major=$mainline_major mainline_minor=$mainline_minor \
  74 # mainline_patch=$mainline_patch major_rev=$major_rev minor_rev=$minor_rev
  75
  76 expected_rhel_base_minor="el7"
  77 if [ "$mainline_major" = "3" ] && [ "$mainline_minor" = "10" ]; then
  78     if [ "$major_rev" = "327" ]; then
  79 #        echo "rhel72"
  80         comp_ver=36
  81         ver_offset=4
  82         installed_ver="$minor_rev"
  83     elif [ "$major_rev" = "693" ]; then
  84 #        echo "rhel74"
  85         comp_ver=11
  86         ver_offset=4
  87         installed_ver="$minor_rev"
  88     elif [ "$major_rev" = "957" ]; then
  89 #        echo "rhel76"
  90         comp_ver=10
  91         ver_offset=4
  92         installed_ver="$minor_rev"
  93     fi
  94 elif [ "$mainline_major" = "4" ] && [ "$mainline_minor" = "4" ]; then
  95     if [ "$mainline_patch" -ge "73" ]; then
  96 #        echo "sles12sp3"
  97         comp_ver=114
  98         ver_offset=2
  99         installed_ver="$mainline_patch"
 100     fi
 101 elif [ "$mainline_major" = "4" ] && [ "$mainline_minor" = "12" ]; then
 102     if [ "$mainline_patch" -ge "14" ]; then
 103 #        echo "sles12sp4"
 104         comp_ver=14
 105         ver_offset=2
 106         installed_ver="$mainline_patch"
 107     fi
 108 fi
 109
 110 if [ X"$ver_offset" = X ]; then
 111     echo "This script is not intended to run on kernel $(uname -r)"
 112     exit 1
 113 fi
 114
 115 #IFS='.\|-' read -r -a version_nums <<<"${current_kernel}"
 116 #echo ver_offset=$ver_offset
 117 #echo installed_ver="$installed_ver"
 118 #echo installed_ver="${version_nums[$ver_offset]}"
 119
 120 kmod_versions=()
 121 kversion=$(rpm -ql ${rpmname} | grep '\.ko$' | \
 122            sed -n -e 's/^\/lib\/modules\/\(.*\)\/extra\/.*$/\1/p' | \
 123            sort | uniq)
 124 for kv in $kversion; do
 125     IFS='.\|-' read -r -a kv_nums <<<"${kv}"
 126     kmod_versions+=(${kv_nums[$ver_offset]})
 127 done
 128 sorted_kmod_vers=$(printf "%s\n" "${kmod_versions[@]}" | \
 129                        sort -n)
 130 #echo "$sorted_kmod_vers"
 131
 132 if [ ! -n "$sorted_kmod_vers" ]; then
 133     echo "No kernel modules found from package $rpmname, exiting"
 134     exit 1
 135 else
 136     # first line for kmod_low_ver, last for kmod_high_ver
 137     kmod_low_ver=$(echo "$sorted_kmod_vers" | head -1)
 138     kmod_high_ver=$(echo "$sorted_kmod_vers" | tail -1)
 139 fi
 140 #echo "Installing KMOD with minor revisions $kmod_low_ver and \
 141 #$kmod_high_ver"
 142
 143 found_match=false
 144 for kname in `ls -d /lib/modules/*`
 145 do
 146     IFS='.\|-' read -r -a pkg_ver_nums <<<"${kname}"
 147     pkg_ver=${pkg_ver_nums[$ver_offset]}
 148     if [ "$installed_ver" = "$expected_rhel_base_minor" ] ||
 149        [ "$installed_ver" -le "$comp_ver" ]; then
 150         if [ "$pkg_ver" = "$kmod_low_ver" ]; then
 151             requested_kernel=$kname
 152             found_match="true"
 153             echo "Installing Openvswitch KMOD from kernel $kname"
 154             break
 155         fi
 156     else
 157         if [ "$pkg_ver" = "$kmod_high_ver" ]; then
 158             requested_kernel=$kname
 159             found_match="true"
 160             echo "Installing Openvswitch KMOD from kernel $kname"
 161             break
 162         fi
 163     fi
 164 done
 165
 166 if [ "$found_match" = "false" ]; then
 167     echo $script_name: Failed
 168     exit 1
 169 fi
 170
 171 if [ "$requested_kernel" != "/lib/modules/$current_kernel" ]; then
 172     if [ ! -d /lib/modules/$current_kernel/weak-updates/openvswitch ]; then
 173         mkdir -p /lib/modules/$current_kernel/weak-updates
 174         mkdir -p /lib/modules/$current_kernel/weak-updates/openvswitch
 175     fi
 176     for m in openvswitch vport-gre vport-stt vport-geneve \
 177         vport-lisp vport-vxlan; do
 178         ln -f -s $requested_kernel/extra/openvswitch/$m.ko \
 179             /lib/modules/$current_kernel/weak-updates/openvswitch/$m.ko
 180     done
 181 else
 182     echo Proper OVS kernel modules already configured
 183 fi
 184 # Always run depmod
 185 /sbin/depmod -a