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



Hi

My main question was if it is possible to use a whole disk using LVM without creating a seperate LVM partition in kickstart?  If you create a partition on the disk you canĀ“t easily extend the disk by increasing the disk size in VMware. Then you have to add another disk and extend your volume group.
If you use the whole disk by initialize the disk using "pvcreate /dev/disk", it can easily be resized. I am not an expert on LVM so please correct me if I am wrong :)
Is it possible to use standard LVM commands in kickstart? As I understand you can just use part and logvol? By reading the manuls for theese commands I cannot find a solution for this.

I use the following commands in my kickstart file, and the partitioning script I presented in my first mail is included in the kickstart using the %include statement below.

zerombr
clearpart --all
bootloader --location=mbr --boot-drive=sda
%include /tmp/partitioning.cfg


By the way we are running Satellite 5.7.

Regards Jerry



From:        James Harrison <jamesaharrisonuk yahoo co uk>
To:        Discussion list about Kickstart <kickstart-list redhat com>,
Cc:        Anette Hagelin <anme06 handelsbanken se>
Date:        2015-03-09 16:29
Subject:        Re: Kickstart - Partitioning....possible to use whole disk for LVM        without        creating a LVM partition
Sent by:        kickstart-list-bounces redhat com




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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