Re: [opensuse-autoinstall] autoyast , create / keep existing LVM configuration

4 Sep 2012

      On Tue, Sep 04, Hans-Joachim Ehlers wrote:
...
Given : SLES 11 SP1
Task:
Create a LVM partition on /dev/sdb. In case the partition already exist just mount/import the LV.
Problem:
I am able to create the LVM partition but i do not know how "import" a already existing partition nor how to prevent autoyast to overwrite the existing one.
Ny current thoughts are using a pre-script or rule to check if there is a already configured /dev/sdb with lvm .
In case none exist the following config will be applied , in case a LVM partiton already exist a post script will import these partition from /dev/sdb
Still i would like to let autoyast do this but i do not know how ?
Any tips or already working config ?
It works with a pre-script and some sed trickery. I have a non-destructive default
in partitioning section and change it when no lvm vg is detected in pre-script.
I expect volume group rootvg on disk /dev/sdb

I have the following partitioning section:

<partitioning config:type="list">
    <drive>
      <device>/dev/rootvg</device>
      <lvm2 config:type="boolean">true</lvm2>
      <partitions config:type="list">
        <partition>
          <create config:type="boolean">false</create>
          <filesystem config:type="symbol">ext3</filesystem>
          <format config:type="boolean">true</format>
          <lv_name>home</lv_name>
          <mount>/home</mount>
          <mountby config:type="symbol">device</mountby>
          <size>1G</size>
        </partition>
        <partition>
          <create config:type="boolean">false</create>
          <filesystem config:type="symbol">ext3</filesystem>
          <format config:type="boolean">true</format>
          <lv_name>opt</lv_name>
          <mount>/opt</mount>
          <mountby config:type="symbol">device</mountby>
          <size>1G</size>
        </partition>
        <partition>
          <create config:type="boolean">false</create>
          <filesystem config:type="symbol">ext3</filesystem>
          <format config:type="boolean">true</format>
          <lv_name>root</lv_name>
          <mount>/</mount>
          <mountby config:type="symbol">device</mountby>
          <size>2G</size>
        </partition>
        <partition>
          <create config:type="boolean">false</create>
          <filesystem config:type="symbol">swap</filesystem>
          <format config:type="boolean">true</format>
          <lv_name>swap</lv_name>
          <mount>swap</mount>
          <mountby config:type="symbol">device</mountby>
          <size>500M</size>
        </partition>
        <partition>
          <create config:type="boolean">false</create>
          <filesystem config:type="symbol">ext3</filesystem>
          <format config:type="boolean">true</format>
          <lv_name>tmp</lv_name>
          <mount>/tmp</mount>
          <mountby config:type="symbol">device</mountby>
          <size>200M</size>
        </partition>
        <partition>
          <create config:type="boolean">false</create>
          <filesystem config:type="symbol">ext3</filesystem>
          <format config:type="boolean">true</format>
          <lv_name>usr</lv_name>
          <mount>/usr</mount>
          <mountby config:type="symbol">device</mountby>
          <size>2G</size>
        </partition>
        <partition>
          <create config:type="boolean">false</create>
          <filesystem config:type="symbol">ext3</filesystem>
          <format config:type="boolean">true</format>
          <lv_name>var</lv_name>
          <mount>/var</mount>
          <mountby config:type="symbol">device</mountby>
          <size>1G</size>
        </partition>
      </partitions>
      <pesize>32M</pesize>
      <type config:type="symbol">CT_LVM</type>
      <use>all</use>
    </drive>
    <drive>
      <device>/dev/sdb</device>
      <initialize config:type="boolean">false</initialize>"
      <partitions config:type="list">
        <partition>
          <create config:type="boolean">false</create>
          <filesystem config:type="symbol">ext3</filesystem>
          <format config:type="boolean">true</format>
          <mount>/boot</mount>
          <mountby config:type="symbol">device</mountby>
          <partition_id config:type="integer">131</partition_id>
          <partition_nr config:type="integer">1</partition_nr>
          <partition_type>primary</partition_type>
          <size>500M</size>
        </partition>
        <partition>
          <create config:type="boolean">false</create>
          <format config:type="boolean">false</format>
          <lvm_group>rootvg</lvm_group>
          <partition_id config:type="integer">142</partition_id>
          <partition_nr config:type="integer">2</partition_nr>
          <partition_type>primary</partition_type>
          <size>max</size>
        </partition>
      </partitions>
      <use>all</use>
    </drive>
</partitioning>

and the following script section:

<scripts>
  <pre-scripts config:type="list">
     <script>
     <debug config:type="boolean">true</debug>
     <filename>pre_script</filename>
     <interpreter>shell</interpreter>
     <source><![CDATA[
if [ `pvs | grep sdb.*rootvg | wc -l` -eq 0 ]
then
    cp -av /tmp/profile/autoinst.xml /tmp/profile/modified.xml
    sed -i "/device.*rootvg/,/<\/drive>/{/create/s/false/true/}" /tmp/profile/modified.xml 
    sed -i "/device.*sdb/,/<\/drive>/{/initialize/s/false/true/}" /tmp/profile/modified.xml
    sed -i "/device.*sdb/,/<\/drive>/{/create/s/false/true/}" /tmp/profile/modified.xml
fi      
]]></source>
     </script>
  </pre-scripts>
</scripts>

Tschuess, 
	Thomas Fehr
-- 
  Thomas Fehr, SuSE Linux Products GmbH, Maxfeldstr. 5, 90409 Nuernberg, Germany
  GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer, HRB 16746 (AG Nürnberg)
  Tel: +49-911-74053-0,  Fax: +49-911-74053-482,  Email: fehr@suse.de
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