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 #   - 3.10.0 major revision 1101 (RHEL 7.8)
  23 #   - 4.4.x,  x >= 73           (SLES 12 SP3)
  24 #   - 4.12.x, x >= 14           (SLES 12 SP4).
  25 # It is packaged in the openvswitch kmod RPM and run in the post-install
  26 # scripts.
  27 #
  28 # For kernel 3.10.0-957,
  29 # due to some backward incompatible changes introduced in minor revision 12.1,
  30 # kernel modules built against kernels newer than 12.1 cannot be loaded on
  31 # system running kernels older than 12.1, vice versa.
  32 #
  33 # For kernel 3.10.0-693,
  34 # due to some backward incompatible changes introduced in minor revision 17.1,
  35 # kernel modules built against kernels newer than 17.1 cannot be loaded on
  36 # system running kernels older than 17.1, vice versa.
  37 #
  38 # For kernel 3.10.0-327,
  39 # due to some backward incompatible changes introduced in minor revision 41.3,
  40 # kernel modules built against kernels newer than 41.3 cannot be loaded on
  41 # system running kernels older than 41.3, vice versa.
  42 #
  43 # For kernel >= 4.4.73,
  44 # kernel modules built with 4.4.73 can run on systems with kernel versions from
  45 # 4.4.73 to 4.4.114; modules built against 4.4.120 can run on systems from
  46 # 4.4.120 onwards.
  47 #
  48 # For kernel 4.12.x, x>=14,
  49 # kernel modules built with the oldest compatible kernel 4.12.14-94.41.1 can
  50 # run on all versions onwards.
  51 #
  52 # This script checks the current running kernel version, and update symlinks
  53 # for the openvswitch kernel modules in the appropriate kernel directory,
  54 # provided the kmod RPM has installed kernel modules files built from both
  55 # minor revisions.
  56 #
  57 # In case of a kernel minor revision change after the openvswitch kmod package
  58 # is installed, this script shall be run manually after system reboots and
  59 # switches to a different kernel
  60 if [ -n "$(rpm -qa kmod-openvswitch)" ]; then
  61     rpmname="kmod-openvswitch"
  62 elif [ -n "$(rpm -qa openvswitch-kmod)" ]; then
  63     rpmname="openvswitch-kmod"
  64 else
  65     echo "openvswitch kmod package not installed, existing"
  66     exit 1
  67 fi
  68 #echo $rpmname
  69 script_name=$(basename -- "$0")
  70 current_kernel=$(uname -r)
  71 echo current kernel is $current_kernel
  72
  73 IFS='.\|-' read mainline_major mainline_minor mainline_patch major_rev \
  74     minor_rev _extra <<<"${current_kernel}"
  75 # echo mainline_major=$mainline_major mainline_minor=$mainline_minor \
  76 # mainline_patch=$mainline_patch major_rev=$major_rev minor_rev=$minor_rev
  77
  78 expected_rhel_base_minor="el7"
  79 if [ "$mainline_major" = "3" ] && [ "$mainline_minor" = "10" ]; then
  80     if [ "$major_rev" = "327" ]; then
  81 #        echo "rhel72"
  82         comp_ver=36
  83         ver_offset=4
  84         installed_ver="$minor_rev"
  85     elif [ "$major_rev" = "514" ]; then
  86 #        echo "rhel73"
  87         comp_ver=26
  88         ver_offset=4
  89         installed_ver="$minor_rev"
  90     elif [ "$major_rev" = "693" ]; then
  91 #        echo "rhel74"
  92         comp_ver=11
  93         ver_offset=4
  94         installed_ver="$minor_rev"
  95     elif [ "$major_rev" = "862" ]; then
  96 #        echo "rhel75"
  97         comp_ver=20
  98         ver_offset=4
  99         installed_ver="$minor_rev"
 100     elif [ "$major_rev" = "957" ]; then
 101 #        echo "rhel76"
 102         comp_ver=10
 103         ver_offset=4
 104         installed_ver="$minor_rev"
 105     elif [ "$major_rev" = "1062" ]; then
 106 #        echo "rhel77"
 107         comp_ver=10
 108         ver_offset=4
 109         installed_ver="$minor_rev"
 110     elif [ "$major_rev" = "1101" ]; then
 111 #        echo "rhel78"
 112         comp_ver=10
 113         ver_offset=4
 114         installed_ver="$minor_rev"
 115     fi
 116 elif [ "$mainline_major" = "4" ] && [ "$mainline_minor" = "4" ]; then
 117     if [ "$mainline_patch" -ge "73" ]; then
 118 #        echo "sles12sp3"
 119         comp_ver=114
 120         ver_offset=2
 121         installed_ver="$mainline_patch"
 122     fi
 123 elif [ "$mainline_major" = "4" ] && [ "$mainline_minor" = "12" ]; then
 124     if [ "$mainline_patch" -ge "14" ]; then
 125 #        echo "sles12sp4"
 126         comp_ver=1
 127         ver_offset=2
 128         installed_ver="$mainline_patch"
 129     fi
 130 fi
 131
 132 if [ X"$ver_offset" = X ]; then
 133     echo "This script is not intended to run on kernel $(uname -r)"
 134     exit 1
 135 fi
 136
 137 #IFS='.\|-' read -r -a version_nums <<<"${current_kernel}"
 138 #echo ver_offset=$ver_offset
 139 #echo installed_ver="$installed_ver"
 140 #echo installed_ver="${version_nums[$ver_offset]}"
 141
 142 kmod_versions=()
 143 kversion=$(rpm -ql ${rpmname} | grep '\.ko$' | \
 144            sed -n -e 's/^\/lib\/modules\/\(.*\)\/extra\/.*$/\1/p' | \
 145            sort | uniq)
 146 for kv in $kversion; do
 147     IFS='.\|-' read -r -a kv_nums <<<"${kv}"
 148     kmod_versions+=(${kv_nums[$ver_offset]})
 149 done
 150 sorted_kmod_vers=$(printf "%s\n" "${kmod_versions[@]}" | \
 151                        sort -n)
 152 #echo "$sorted_kmod_vers"
 153
 154 if [ ! -n "$sorted_kmod_vers" ]; then
 155     echo "No kernel modules found from package $rpmname, exiting"
 156     exit 1
 157 else
 158     # first line for kmod_low_ver, last for kmod_high_ver
 159     kmod_low_ver=$(echo "$sorted_kmod_vers" | head -1)
 160     kmod_high_ver=$(echo "$sorted_kmod_vers" | tail -1)
 161 fi
 162 #echo "Installing KMOD with minor revisions $kmod_low_ver and \
 163 #$kmod_high_ver"
 164
 165 found_match=false
 166 for kname in $kversion;
 167 do
 168     IFS='.\|-' read -r -a pkg_ver_nums <<<"${kname}"
 169     pkg_ver=${pkg_ver_nums[$ver_offset]}
 170     if [ "$installed_ver" = "$expected_rhel_base_minor" ] ||
 171        [ "$installed_ver" -le "$comp_ver" ]; then
 172         if [ "$pkg_ver" = "$kmod_low_ver" ]; then
 173             requested_kernel=$kname
 174             found_match="true"
 175             echo "Installing Openvswitch KMOD from kernel $kname"
 176             break
 177         fi
 178     else
 179         if [ "$pkg_ver" = "$kmod_high_ver" ]; then
 180             requested_kernel=$kname
 181             found_match="true"
 182             echo "Installing Openvswitch KMOD from kernel $kname"
 183             break
 184         fi
 185     fi
 186 done
 187
 188 if [ "$found_match" = "false" ]; then
 189     echo $script_name: Failed
 190     exit 1
 191 fi
 192
 193 if [ "$requested_kernel" != "$current_kernel" ]; then
 194     if [ ! -d /lib/modules/$current_kernel/weak-updates/openvswitch ]; then
 195         mkdir -p /lib/modules/$current_kernel/weak-updates
 196         mkdir -p /lib/modules/$current_kernel/weak-updates/openvswitch
 197     fi
 198     for m in openvswitch vport-gre vport-stt vport-geneve \
 199         vport-lisp vport-vxlan; do
 200         ln -f -s /lib/modules/$requested_kernel/extra/openvswitch/$m.ko \
 201             /lib/modules/$current_kernel/weak-updates/openvswitch/$m.ko
 202     done
 203 else
 204     echo Proper OVS kernel modules already configured
 205 fi
 206 # Always run depmod
 207 /sbin/depmod -a