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Re: Kickstart - Partitioning....possible to use whole disk for LVM without creating a LVM partition



Hi,
From what I remember,it depends on the use of the disk. If its a boot disk, you have to have one DOS boot partition to start the system. However, if the disk is a second disk, then the whole disk can be folded into LVM.

Thanks
James


On Monday, 9 March 2015, 14:18, Jerry Billing <jebi01 handelsbanken se> wrote:


Hi

For virtual servers it is nice to use the whole disk for LVM instead of creating a LVM partition on the disk. Then you can just increase the size of the disk in VMware and later extend the file system instead of having to add another disk and extend.
Is it possible to use this setup in the kickstart? What syntax do one use if it is possible?

If I have done it manually it whould have been like this:
pvcreate /dev/sdb (instead of using a LVM partition called /dev/sdb1)
vgcreate DataVG /dev/sdb
lvcreate -n DataLV -l 100%FREE DataVG DataLV

At the moment I have the following partitioning script in my kickstart file for RHEL6/7 as a pre script:

DISK_TYPE=$(parted -s /dev/sda print |grep Model | awk '{print $2}')
echo "Disk type = $DISK_TYPE"

if [ "$DISK_TYPE" = "VMware" ]

then
echo "This is a VMware server, disk type=$DISK_TYPE"
cat > /tmp/partitioning.cfg <<EOF
part /boot --fstype="xfs" --size=1024 -->
part pv.01 --size=10240 --grow -->
volgroup VGos pv.01
logvol / --vgname=VGos --name=LVroot --size=10240 --grow
logvol swap --vgname=VGos --name=LVswap --recommended
part pv.02 --size=1000 --grow -->
volgroup VGdata pv.02
logvol /usr/users --vgname=VGdata --name=LVhome --size=20480
logvol /app --vgname=VGdata --name=LVapp --size=1000 --grow
EOF

else
echo "This is a Physical server, disk type=$DISK_TYPE"
cat > /tmp/partitioning.cfg <<EOF
part /boot --fstype="xfs" --size=1024 -->
part pv.01 --size=10240 --grow -->
volgroup VGos pv.01
logvol / --vgname=VGos --name=LVroot --size=10240 --grow
logvol swap --vgname=VGos --name=LVswap --recommended
logvol /var --vgname=VGos --name=LVvar --size=20480
EOF

fi


Regards Jerry

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