lvm, lilo, swap, mount points

10 Jun 2002

      Hi,

I have the following partitioning configuration on 2 SCSI disks:

<partitioning config:type="list">
  <drive>
    <device>/dev/sda</device>
    <use>all</use>
    <partitions config:type="list">
      <partition>
      <filesystem config:type="symbol">swap</filesystem>
      <filesystem_id config:type="integer">130</filesystem_id>
      <format config:type="boolean">true</format>
      <mount/>
      <size>768M</size>
      <type>Linux swap</type>
    </partition>
    .... some other partitions
    <partition>
      <lvm_group>HomeVol</lvm_group>
      <size>14000M</size>
      <filesystem_id config:type="integer">142</filesystem_id>
      <type>Linux LVM</type>
    </partition>
    <partition>
      <filesystem config:type="symbol">ext3</filesystem>
      <filesystem_id config:type="integer">131</filesystem_id>
      <format config:type="boolean">true</format>
      <mount>/usr</mount>
      <size>max</size>
      <type>Linux native</type>
    </partition>
   </partitions>
  </drive>
  <drive>
    <device>/dev/sdb</device>
    <use>all</use>
    <partitions config:type="list">
   ... some other partitions
      <partition>
        <filesystem_id config:type="integer">142</filesystem_id>
        <type>Linux LVM</type>
        <lvm_group>HomeVol</lvm_group>
        <size>14000M</size>
      </partition>
    </partitions>
  </drive>

and lvm

  <lvm config:type="list">
    <lvm_group>
      <lvm_name>HomeVol</lvm_name>
      <pesize>4M</pesize>
      <logical_volumes config:type="list">
        <lv_name>LHomeVol</lv_name>
        <lv_size>29200mb</lv_size>
        <lv_fs>ext3</lv_fs>
        <lv_mount>/export/home</lv_mount>
      </logical_volumes>
    </lvm_group>
  </lvm>

i.e., what I want to have is a logical volume spanning 2 physical
volumes. What yast2 does is something else (unfortunately log files are
deleted):
- 1st it partitions /dev/sda
- 2nd it creates a volume group HomeVol consisting of the lvm partion on
  disk /dev/sda
- 3rd it partitions /dev/sdb
- 4th it cannot create another volume group HomeVol with the partition on
  /dev/sdb, because a volume group with this label does already exist
Afterwards I added the corresponding configuration manually and
encountered another problem: The size of the volume group was calculated
by yast to be 27.3G (in the screen where volumes are assigned to volume
groups), but on the next screen I was offered a maximum file system size
of 27.9G for formatting. This did not work out, for obvious reasons...

In addition, neither mount points are created for the swap partitions 
nor the swap partitions initialised.
In addition, I would like to be able to configure mount points that are
not assigned to devices at install time (like tmpfs, usb storage devices),
but I can not find a way to configure them outside the <partition>
sections.

Also, on this disk configuration, lilo did not install successfully
in automated mode. The initrd was created and contained the aic7xxx module
for the SCSI controller, but the root device entry in /etc/lilo.conf
pointed to "nil" instead of /dev/sda6. 

Yours,

Volkmar

--
Volkmar Glauche			E-Mail	glauche@uke.uni-hamburg.de
Department of Neurology		WWW	http://www.uni-jena.de/~nvg/
UKE Hamburg			Phone	49(0)40-42803-5781
Martinistr. 52			Fax	49(0)40-42803-5086
20246 Hamburg