Displaying 20 results from an estimated 3000 matches similar to: "qemu-xen qdisk performance"
2012 May 20
2
Remus network buffering problem
Hi all,
I have a following problem:
- Remus network buffering doesn''t work. It seems to be because of no vif is
reported by the function server.xend.domain on line 29 of
/usr/local/lib/python2.7/dist-packages/xen/remus/vm.py (seen using pdb) :
27 if domid:
28 try:
29 self.dominfo = server.xend.domain(domid, ''all'')
>
2013 Apr 26
7
BUG 4.2.2: xl cd-insert corrupts xenstore state
$ git checkout RELEASE-4.2.2
$ git clean -ffdx
[do a build, install, reboot]
$ xl create a0
$ xl cd-eject a0 hdc
[However, the guest OS still sees the CD inserted]
$ xl block-list a0
Segmentation fault
$ xl cd-insert a0 hdc file:/images/xs-tools-6.0.0.iso
Segmentation fault
The problem seems to be that xl cd-eject is writing corrupt values to
xenstore. Note that vbd/1/5632 is still there
2012 Apr 24
21
no console when using xl toolstack xen 4.1.2
Hello!
I was asking for help on the Freenode channel, and I was pointed here.
I have a situation where, using xl, I can create a functional PV domU, with or without pv-grub, but I cannot access the console. Firing up xend and using xm works without trouble. Since xend and company is being deprecated, I would like to transition to using the xl toolstack.
The system is an Arch Linux system
2014 Dec 15
2
Reminder: CentOS Virt SIG meeting tomorrow
Hey all! Just a reminder, the CentOS Virt SIG meeting is tomorrow,
2pm, on #centos-devel (freenode IRC).
Agenda items I've got:
* Xen 4.4.1 for C6 update (finally)
- Got xen 4.4.1 w/ updated XenServer blktap working, + libvirt
- Other changes to consider: xend off by default, revert "favor qdisk" change
* oVirt joining SIG?
* Meetings over Christmas
- proposal: Cancel phone
2015 May 06
3
The future of blktap in Xen4CentOS
On Tue, May 5, 2015 at 2:07 PM, Johnny Hughes <johnny at centos.org> wrote:
> WRT a new kernel .. the 3.18.x kernel has been selected to be maintained
> as an LTS until Jan 2017. I think we should start work on rebuilding
> this kernel and using it in the x4c projects.
>
> https://lwn.net/Articles/636289/
>
> Thoughts?
>
> I will grab this kernel and try to roll
2013 Oct 10
0
Xen Security Advisory 71 (CVE-2013-4375) - qemu disk backend (qdisk) resource leak
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Xen Security Advisory CVE-2013-4375 / XSA-71
version 2
qemu disk backend (qdisk) resource leak
UPDATES IN VERSION 2
====================
Public release
Fix patch header corruption in xsa71-qemu-xen-unstable.patch.
ISSUE DESCRIPTION
=================
The qdisk PV disk backend in the
2011 Jun 24
9
[PATCH] xen_disk: cope with missing xenstore "params" node
From: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
When disk is a cdrom and the drive is empty the "params" node in
xenstore might be missing completely: cope with it instead of
segfaulting.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
---
hw/xen_disk.c | 16 +++++++++++-----
1 files changed, 11 insertions(+), 5 deletions(-)
diff --git
2013 Jun 12
9
Test report for xen-unstable and qemu-xen
Dom0:
Wheezy 64 bit with kernel from package linux-image-3.2.0-4-amd64 version
3.2.41-2+deb7u2, package blktap-dkms and all dependency packages for
xen, spice and usb redirection.
Seabios 1.7.2-3 and latest spice and usbredir compiled from debian
unstable sources.
-------------------------
/etc/modules
------------
loop max_loop=64
xenfs
xen-evtchn
blktap
-------------------------
git clone
2008 Jan 29
2
Using Predict and GLM
Dear R Help,
I read through the archives pretty extensively before sending this
email, as it seemed there were several threads on using predict with
GLM. However, while my issue is similar to previous posts (cannot
get it to predict using new data), none of the suggested fixes are
working.
The important bits of my code:
set.seed(644)
n0=200 #number of observations
2012 Apr 03
3
regression for poisson distributed data
Hello all,
I would like to get parameter estimates for different models. For one of
them I give the code in example. I am estimating the parameters (i,j and
k) with the nls function, which sees the error distribution as normal, I
would however like to do the same as nls with the assumption that the
errors are poisson distributed.
Is there a way to do this with R? Are there packages designed
2012 Apr 19
1
non-numeric argument in mle2
Hi all,
I have some problems with the mle2 function
> RogersIIbinom <- function(N0,attackR3_B,Th3_B)
{N0-lambertW(attackR3_B*Th3_B*N0*exp(-attackR3_B*(24-Th3_B*N0)))/(attackR3_B*Th3_B)}
> RogersII_B <-
mle2(FR~dbinom(size=N0,prob=RogersIIbinom(N0,attackR3_B,Th3_B)/N0),start=list(attackR3_B=1.5,Th3_B=0.04),method="Nelder-Mead",data=dat)
Error in dbinom(x, size, prob, log)
2012 Dec 10
0
using iso file as cdrom for pv domU is not working on xl toolstack (qdisk)
I have an issue on Xen 4.2+ (now on yesterday''s tip) where when I try to
use an iso image as cdrom for a pv domU, it appears that the devices is
an unusable state on the domU side.
DomU kernel output: http://bpaste.net/show/63482/
xen logs: http://bpaste.net/show/63490/
udevadm monitor output: http://bpaste.net/show/63481/
I can work around this issue easily by creating a loop back
2009 Dec 28
2
Modified R Code
Dear R helpers,
I have following input files. (Actually they are more than 10 rates but here i am considering only 2 rates to write my problem)
rate1.csv
min1 max1 min2 max2 min3 max3
1.05 1.30 1.30 1.65 1.65 1.99
rate2.csv
min1 max1 min2 max2 min3
2006 Jul 03
2
help a newbie with a loop
Hi,
I am new in R and stumbled on a problem my (more experienced) friends
can not help with with. Why isnt this code working?
The function is working, also with the loop and the graph appears,
only when I build another loop around it (for different values of p) ,
R stays in a loop?
Can't it take more then 2 loops in one program?
powerb<-function(x,sp2,a,b,b1,m)
{
2019 Mar 13
2
llvm combines "ADD frameindex, constant" to OR
Hi all,
I've been working on a backend of our architecture and noticed llvm performs
following combining although one of operands is FrameIndex.
Combining: t114: i64 = add FrameIndex:i64<0>, Constant:i64<56>
Creating new node: t121: i64 = or FrameIndex:i64<0>, Constant:i64<56>
... into: t121: i64 = or FrameIndex:i64<0>, Constant:i64<56>
This
2010 Aug 10
4
Function to Define a Function
I am trying to define a general R function that has a function as the output that depends on the user's input arguments (this may make more sense by looking at the toy example below). My real use for this type of code is to allow a user to choose from many parameterizations of the same general model.
My "issue" is that when I compile a package with this type of code in it I get a
2012 Apr 18
1
error estimating parameters with mle2
Hi all,
When I try to estimate the functional response of the Rogers type I
equation (for the mle2 you need the package bbmle):
> RogersIbinom <- function(N0,attackR2_B,u_B) {attackR2_B+u_B*N0}
> RogersI_B <-
mle2(FR~dbinom(size=N0,prob=RogersIbinom(N0,attackR2_B,u_B)/N0),start=list(attackR2_B=4.5,u_B=0.16),method="Nelder-Mead",data=data5)
I get following error message
2008 Oct 29
2
Help using tapply with multiple variables
Dear list,
I have the function (as a simple example, which is actually part of a
larger function)
pres.test<-function(N0=N0, N1=N1)
{
dt<-5
r<-log(N1/N0)/dt
r
}
which calculates the annual growth rates in a population
Where N0 is the population classified into age intervals, say 5
years, at time=1995, and N1 is the population by 5 year age classes
at time=2000.
2010 Oct 21
4
data.frame query
Hi All,
Apologies for the simplicity of my question, but I would be grateful for any
advice. Thanks
I'm trying to put the output from a for loop into a data frame, however I
have not been successful.
The steps I have taken are:
*R-code:*
>for (k in 1:(nt-1-n0) ){
> n<- n0-1+k
> lam=n/nt
> Q=x[n]
> output1<-data.frame(cbind(k,n,lam,Q))
> output1
> }
2002 Aug 07
2
indexing matrices with dimnames?
I've got a covariance matrix that I'd like to index using the
dimnames:
> vcov1
n0 x0 s n1 n2
n0 82.43824759 1.839505e-02 -4.975196e-01 2.882394e+03 -2.615986e-01
x0 0.01839505 6.134010e-03 -7.695922e-04 -6.373946e+01 6.086321e-03
s -0.49751964 -7.695922e-04 9.638943e-03 3.406594e+02 -3.173671e-02
n1 2882.39407745