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 #   - 3.10.0 major revision 1062 (RHEL 7.7)
  22 #   - 4.4.x,  x >= 73           (SLES 12 SP3)
  23 #   - 4.12.x, x >= 14           (SLES 12 SP4).
  24 # It is packaged in the openvswitch kmod RPM and run in the post-install
  25 # scripts.
  26 #
  27 # For kernel 3.10.0-957,
  28 # due to some backward incompatible changes introduced in minor revision 12.1,
  29 # kernel modules built against kernels newer than 12.1 cannot be loaded on
  30 # system running kernels older than 12.1, vice versa.
  31 #
  32 # For kernel 3.10.0-693,
  33 # due to some backward incompatible changes introduced in minor revision 17.1,
  34 # kernel modules built against kernels newer than 17.1 cannot be loaded on
  35 # system running kernels older than 17.1, vice versa.
  36 #
  37 # For kernel 3.10.0-327,
  38 # due to some backward incompatible changes introduced in minor revision 41.3,
  39 # kernel modules built against kernels newer than 41.3 cannot be loaded on
  40 # system running kernels older than 41.3, vice versa.
  41 #
  42 # For kernel >= 4.4.73,
  43 # kernel modules built with 4.4.73 can run on systems with kernel versions from
  44 # 4.4.73 to 4.4.114; modules built against 4.4.120 can run on systems from
  45 # 4.4.120 onwards.
  46 #
  47 # For kernel 4.12.x, x>=14,
  48 # kernel modules built with the oldest compatible kernel 4.12.14-94.41.1 can
  49 # run on all versions onwards.
  50 #
  51 # This script checks the current running kernel version, and update symlinks
  52 # for the openvswitch kernel modules in the appropriate kernel directory,
  53 # provided the kmod RPM has installed kernel modules files built from both
  54 # minor revisions.
  55 #
  56 # In case of a kernel minor revision change after the openvswitch kmod package
  57 # is installed, this script shall be run manually after system reboots and
  58 # switches to a different kernel
  59 if [ -n "$(rpm -qa kmod-openvswitch)" ]; then
  60     rpmname="kmod-openvswitch"
  61 elif [ -n "$(rpm -qa openvswitch-kmod)" ]; then
  62     rpmname="openvswitch-kmod"
  63 else
  64     echo "openvswitch kmod package not installed, existing"
  65     exit 1
  66 fi
  67 #echo $rpmname
  68 script_name=$(basename -- "$0")
  69 current_kernel=$(uname -r)
  70 echo current kernel is $current_kernel
  71
  72 IFS='.\|-' read mainline_major mainline_minor mainline_patch major_rev \
  73     minor_rev _extra <<<"${current_kernel}"
  74 # echo mainline_major=$mainline_major mainline_minor=$mainline_minor \
  75 # mainline_patch=$mainline_patch major_rev=$major_rev minor_rev=$minor_rev
  76
  77 expected_rhel_base_minor="el7"
  78 if [ "$mainline_major" = "3" ] && [ "$mainline_minor" = "10" ]; then
  79     if [ "$major_rev" = "327" ]; then
  80 #        echo "rhel72"
  81         comp_ver=36
  82         ver_offset=4
  83         installed_ver="$minor_rev"
  84     elif [ "$major_rev" = "514" ]; then
  85 #        echo "rhel73"
  86         comp_ver=26
  87         ver_offset=4
  88         installed_ver="$minor_rev"
  89     elif [ "$major_rev" = "693" ]; then
  90 #        echo "rhel74"
  91         comp_ver=11
  92         ver_offset=4
  93         installed_ver="$minor_rev"
  94     elif [ "$major_rev" = "862" ]; then
  95 #        echo "rhel75"
  96         comp_ver=20
  97         ver_offset=4
  98         installed_ver="$minor_rev"
  99     elif [ "$major_rev" = "957" ]; then
 100 #        echo "rhel76"
 101         comp_ver=10
 102         ver_offset=4
 103         installed_ver="$minor_rev"
 104     elif [ "$major_rev" = "1062" ]; then
 105 #        echo "rhel77"
 106         comp_ver=10
 107         ver_offset=4
 108         installed_ver="$minor_rev"
 109     fi
 110 elif [ "$mainline_major" = "4" ] && [ "$mainline_minor" = "4" ]; then
 111     if [ "$mainline_patch" -ge "73" ]; then
 112 #        echo "sles12sp3"
 113         comp_ver=114
 114         ver_offset=2
 115         installed_ver="$mainline_patch"
 116     fi
 117 elif [ "$mainline_major" = "4" ] && [ "$mainline_minor" = "12" ]; then
 118     if [ "$mainline_patch" -ge "14" ]; then
 119 #        echo "sles12sp4"
 120         comp_ver=1
 121         ver_offset=2
 122         installed_ver="$mainline_patch"
 123     fi
 124 fi
 125
 126 if [ X"$ver_offset" = X ]; then
 127     echo "This script is not intended to run on kernel $(uname -r)"
 128     exit 1
 129 fi
 130
 131 #IFS='.\|-' read -r -a version_nums <<<"${current_kernel}"
 132 #echo ver_offset=$ver_offset
 133 #echo installed_ver="$installed_ver"
 134 #echo installed_ver="${version_nums[$ver_offset]}"
 135
 136 kmod_versions=()
 137 kversion=$(rpm -ql ${rpmname} | grep '\.ko$' | \
 138            sed -n -e 's/^\/lib\/modules\/\(.*\)\/extra\/.*$/\1/p' | \
 139            sort | uniq)
 140 for kv in $kversion; do
 141     IFS='.\|-' read -r -a kv_nums <<<"${kv}"
 142     kmod_versions+=(${kv_nums[$ver_offset]})
 143 done
 144 sorted_kmod_vers=$(printf "%s\n" "${kmod_versions[@]}" | \
 145                        sort -n)
 146 #echo "$sorted_kmod_vers"
 147
 148 if [ ! -n "$sorted_kmod_vers" ]; then
 149     echo "No kernel modules found from package $rpmname, exiting"
 150     exit 1
 151 else
 152     # first line for kmod_low_ver, last for kmod_high_ver
 153     kmod_low_ver=$(echo "$sorted_kmod_vers" | head -1)
 154     kmod_high_ver=$(echo "$sorted_kmod_vers" | tail -1)
 155 fi
 156 #echo "Installing KMOD with minor revisions $kmod_low_ver and \
 157 #$kmod_high_ver"
 158
 159 found_match=false
 160 for kname in `ls -d /lib/modules/*`
 161 do
 162     IFS='.\|-' read -r -a pkg_ver_nums <<<"${kname}"
 163     pkg_ver=${pkg_ver_nums[$ver_offset]}
 164     if [ "$installed_ver" = "$expected_rhel_base_minor" ] ||
 165        [ "$installed_ver" -le "$comp_ver" ]; then
 166         if [ "$pkg_ver" = "$kmod_low_ver" ]; then
 167             requested_kernel=$kname
 168             found_match="true"
 169             echo "Installing Openvswitch KMOD from kernel $kname"
 170             break
 171         fi
 172     else
 173         if [ "$pkg_ver" = "$kmod_high_ver" ]; then
 174             requested_kernel=$kname
 175             found_match="true"
 176             echo "Installing Openvswitch KMOD from kernel $kname"
 177             break
 178         fi
 179     fi
 180 done
 181
 182 if [ "$found_match" = "false" ]; then
 183     echo $script_name: Failed
 184     exit 1
 185 fi
 186
 187 if [ "$requested_kernel" != "/lib/modules/$current_kernel" ]; then
 188     if [ ! -d /lib/modules/$current_kernel/weak-updates/openvswitch ]; then
 189         mkdir -p /lib/modules/$current_kernel/weak-updates
 190         mkdir -p /lib/modules/$current_kernel/weak-updates/openvswitch
 191     fi
 192     for m in openvswitch vport-gre vport-stt vport-geneve \
 193         vport-lisp vport-vxlan; do
 194         ln -f -s $requested_kernel/extra/openvswitch/$m.ko \
 195             /lib/modules/$current_kernel/weak-updates/openvswitch/$m.ko
 196     done
 197 else
 198     echo Proper OVS kernel modules already configured
 199 fi
 200 # Always run depmod
 201 /sbin/depmod -a