when i send a reboot command to libvirtd to reboot a domain, it does not receive and print
the following warn:2013-04-10 06:01:39.080+0000: 2908: warning : qemuDomainObjTaint:1311 :
Domain id=56 name='69751ca7-3198-4f3c-8265-cb8cb70ad750'
uuid=69751ca7-3198-4f3c-8265-cb8cb70ad750 is tainted: high-privileges
what's the problem???
thanks a lot.
From: libvirt-users-request(a)redhat.com
Subject: libvirt-users Digest, Vol 40, Issue 24
To: libvirt-users(a)redhat.com
Date: Wed, 10 Apr 2013 12:00:18 -0400
Send libvirt-users mailing list submissions to
libvirt-users(a)redhat.com
To subscribe or unsubscribe via the World Wide Web, visit
https://www.redhat.com/mailman/listinfo/libvirt-users
or, via email, send a message with subject or body 'help' to
libvirt-users-request(a)redhat.com
You can reach the person managing the list at
libvirt-users-owner(a)redhat.com
When replying, please edit your Subject line so it is more specific
than "Re: Contents of libvirt-users digest..."
Today's Topics:
1. performance tradeoffs/penalty (lejeczek)
2. Re: performance tradeoffs/penalty (Felicitus)
----------------------------------------------------------------------
Message: 1
Date: Wed, 10 Apr 2013 13:02:19 +0100
From: lejeczek <peljasz(a)yahoo.co.uk>
To: libvirt-users(a)redhat.com
Subject: [libvirt-users] performance tradeoffs/penalty
Message-ID: <516554CB.2000703(a)yahoo.co.uk>
Content-Type: text/plain; charset="utf-8"; Format="flowed"
hi everybody
a newbie here, hoping some experienced users/expert can
honestly answer this one question,
and I think I realize all other advantages libvirtoffer but
simply performance,
does libvirt make a user pay penalty, even if only a small
amount, for using it when compared to raw qemu-kvm command line?
if it does where the overhead goes? quest or host, or maybe
both?
lastly
if overall performance is slower then how small it is
comparing to all the advantages it offers?
many thanks
and apologies if this subject was answered already in the past
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<
https://www.redhat.com/archives/libvirt-users/attachments/20130410/6183c3...
------------------------------
Message: 2
Date: Wed, 10 Apr 2013 14:45:02 +0200
From: Felicitus <felicitus(a)felicitus.org>
To: libvirt-users(a)redhat.com
Subject: Re: [libvirt-users] performance tradeoffs/penalty
Message-ID: <51655ECE.20503(a)felicitus.org>
Content-Type: text/plain; charset=ISO-8859-1
> does libvirt make a user pay penalty, even if only a small amount, for
> using it when compared to raw qemu-kvm command line?
Not that I know of, except that the libvirt daemon uses a few additional
CPU cycles. Technically yes, in the spirit of the question no. Have a
look at your process tree; you'll see command lines in the same way as
you'd expect them to be when you start machines manually.
> if it does where the overhead goes? quest or host, or maybe both?
No additional CPU cycles for the guest, a few additional CPU cycles for
the host to get status information and expose it via the daemon.
> if overall performance is slower then how small it is comparing to all
> the advantages it offers?
It is completely negligible.
Felicitus
------------------------------
_______________________________________________
libvirt-users mailing list
libvirt-users(a)redhat.com
https://www.redhat.com/mailman/listinfo/libvirt-users
End of libvirt-users Digest, Vol 40, Issue 24
*********************************************