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how install XEN in Centos [message #97227]

Fri, 30 March 2012 09:33

tempuser

Messages: 9
Registered: October 2009

Member

hello dears ,

i'm new to install Xen platform in my server , so What is the best division of HDD note that the hard disk space is 500 GB and what i tell the data center to do for lvm

i need advices

thanks

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Re: how install XEN in Centos [message #97228 is a reply to message #97227]

Fri, 30 March 2012 09:37

shazar

Messages: 1856
Registered: May 2011

Grandmaster
LxCenter Core Team Member
LxCenter Representative

The VG should be 500 GB.
The root LV should be about 30 to 50 GB
/home should be 50 GB to start with. This separation lets you easily expand it as it is an LV. /home is where all the backups go.
The unused space in the VG is used to create thick provisioned LVs for the guest machines.

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HyperVM Xen VPS hosting

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Re: how install XEN in Centos [message #97230 is a reply to message #97228]

Fri, 30 March 2012 10:10

tempuser

Messages: 9
Registered: October 2009

Member

hello shazar

thanks for your helping
but i need you to tell me waht i can say to the data center for the division on the right way

thanks again

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Re: how install XEN in Centos [message #97231 is a reply to message #97230]

Fri, 30 March 2012 10:22

shazar

Messages: 1856
Registered: May 2011

Grandmaster
LxCenter Core Team Member
LxCenter Representative

Well the DC should only need to set up the VG and the root LV. You can do the /home LV yourself afterwards. Sorry I don't know how I can better say this...

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Re: how install XEN in Centos [message #97232 is a reply to message #97231]

Fri, 30 March 2012 10:22

shazar

Messages: 1856
Registered: May 2011

Grandmaster
LxCenter Core Team Member
LxCenter Representative

Volume Group... Logical Volume...

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Re: how install XEN in Centos [message #97234 is a reply to message #97232]

Fri, 30 March 2012 10:39

tempuser

Messages: 9
Registered: October 2009

Member

the DC setup VG and the HDD with this configuration

[root@server2 ~]# df -h
Filesystem Size Used Avail Use% Mounted on
tmpfs 2.8G 0 2.8G 0% /dev/shm
/dev/sda1 146M 30M 108M 22% /boot
none 2.8G 104K 2.8G 1% /var/lib/xenstored
[root@server2 ~]# fdisk -l

Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sda1 * 1 20 153600 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 20 60802 488231960 8e Linux LVM
[root@server2 ~]#

so this it's right or what , I really appreciate your help

thanks

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Re: how install XEN in Centos [message #97236 is a reply to message #97234]

Fri, 30 March 2012 11:11

shazar

Messages: 1856
Registered: May 2011

Grandmaster
LxCenter Core Team Member
LxCenter Representative

I think lvdisplay might help more. I'd have to compare this evening against a test system.

https://www.mercuryvps.com
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Re: how install XEN in Centos [message #97240 is a reply to message #97236]

Fri, 30 March 2012 11:17

tempuser

Messages: 9
Registered: October 2009

Member

this is

[root@server2 ~]# lvdisplay
--- Logical volume ---
LV Name /dev/VolGroup00/swap
VG Name VolGroup00
LV UUID LC4F7X-8jtA-ynM3-u1Ei-00Ns-fC4f-fvnUZf
LV Write Access read/write
LV Status available
# open 1
LV Size 4.00 GB
Current LE 1024
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:0

--- Logical volume ---
LV Name /dev/VolGroup00/root
VG Name VolGroup00
LV UUID C7LQTd-ZdD3-rq56-seTp-vGZk-LHxC-GHE53R
LV Write Access read/write
LV Status available
# open 1
LV Size 461.61 GB
Current LE 118173
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 256
Block device 253:1

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Re: how install XEN in Centos [message #97241 is a reply to message #97240]

Fri, 30 March 2012 11:20

shazar

Messages: 1856
Registered: May 2011

Grandmaster
LxCenter Core Team Member
LxCenter Representative

Well it isn't set up correctly then. As you see the LV size is 461.61 GB. HyperVM will have nothing to allocate. The good new is that you can shrink the root filesystem and then you can shrink the logical volume.

https://www.mercuryvps.com
HyperVM Xen VPS hosting

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