Re: [libvirt] Host OS, Storage Info

["Ainsworth, Thomas" <tainsworth@xxxxxxxxxxxx>]

Martin, et al,

Sorry for the lag in response.

So I started playing with the various virsh commands.  Awesome. 

Been doing some reading and I believe I have some things configured not so well.

As I stated earlier in the thread, we have all of the VM image files on one RAID5.  Very fast machine.

When using top, the load average is a stable "5.xx".  No I/O wait. GB's of free memory.  Swap has not been touched.
Using vmstat, I am writing to the RAID5 volume at a constant 150MB/s and reading at a constant 275MB/s. 

With all of that said, here are some results from virsh commands:

# virsh pool-list --all
Name                 State      Autostart
------------------------------------------------------
default              active     yes     


# virsh pool-info default
Name:           default
UUID:            xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
State:          running
Persistent:     yes
Autostart:      yes
Capacity:       30.76 GiB
Allocation:     2.10 GiB
Available:      28.66 GiB

Now, is that ok to have all of the VM's using a default pool? 
Or should a pool be created for each VM instance.

I honestly am not even sure what a pool references...?...

The more I read, the more I am moving away from thinking something in the OS is the cause of my sluggishness.

Suggestions?

Many thanks in advance,

Tom

 

On Thu, May 22, 2014 at 9:16 AM, Martin Kletzander <mkletzan@xxxxxxxxxx> wrote:

On Thu, May 22, 2014 at 12:16:17PM +0530, Sijo Jose wrote:

Hi,
Is there any way to get host OS information and host Storage in formations
using libvirt API...?
Rgds
-Sijo

Check virsh help (most of the commands you probably want start with
'node' or 'vol'/'pool') or have a look at our hvsupport page [1] for
virNode* and virStorage* functions.

If this isn't what you're looking for, specify your question in a
better way.

Martin

[1] http://libvirt.org/hvsupport.html

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