|
Am Dienstag 17 April 2012, 18:56:14 schrieb Simon Hobson:
> Henning Ryll wrote:
> >I have setup xen with "Citrix Xen Server 6.0" using one hard disk with
> >only 80 GB. Everything is running fine so far.
> >
> >Now I have added two 1TB SATA disks.
> >
> >Since Xen uses LVM it should be possible to use these 2 disks as lvm
> >stripe for performace reasons.
> >But how to create local storage on these disks?
> >
> >I am looking around but I can not find any samples to build al lvm stripe
> >with 'xe sr-create'. All samples are using just 1 device.
> >
> >How to create local storage using a lvm stipe ?
>
> You use the LVM commands to do it - this is absolutely and completely
> nothing to do with Xen. When you have created the LVM stripe (volume
> group ?) you can create logical volumes (LVs) within it - either
> using LVM commands, or any management tool that might handle it for
> you.
>
> Just bear in mind that striping two disks together doubles the risk
> of failure casing data loss - you now have two disks, and failure of
> either of them will render the whole set unusable.
Ok.
I know that striping will double the risk of failure. So I have to make sure to have usable backup's.
I have done these steps with LVM now.
1. created 2 physical volumes (i.e. pv_c, pv_d) with pvcreate
2. created a volume group (i.e. vg_c_and_d) with both PV's
3. created al logical volume (i.e. lv_stripe) on top of the VG
But how's the correct syntax of 'xe sr-create' now?
xe sr-create content-type="local SR" type=lvm device-config:device=/dev/vg_c_and_d/lv_stripe shared=true name-label="Local SR"
Doing this I get a second volume group vg_xen..... !
I'm still confused. | 
