Fedora Servers :: Virtual Machine Manager Won't Allow Memory Allocation Over 1024

Jan 26, 2010

I'm running Fedora 11 (2.6.30.10-105.2.4.fc11.i686.PAE) 8 GB memory on a AMD Phenom(tm) II X4 965 Processor, 4 core server I just built.The problem I have run into is any virtual machine that has >1024 MB memory assigned to it will not boot. As along as it has 1024 MB or less it boots fine.The symptom you see is a very quick message "Booting from hard disk" the screen then goes blank, you can't login through SSH, and can't ping the network address so I know it's not some crazy video problem hiding the boot process.The attachment are messages from a failed boot attempt.

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General :: Application Virtual Address Space Memory Allocation - Memory Does Not Get Free

Apr 20, 2010

I am using malloc and frees a lot in my program. It shows its allocated but when i remove it doesnt show as the memory is removed(I am using the top command to view VIRT memory usage). If this continously grows what would happen to my program (Will it go out of memory?)

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Fedora Servers :: NX And Virtual Machine Manager

Jan 22, 2010

I have an F12 installation on which I have installed NoMachine's NX server. I can remote in nicely when needed (try to do as much as possible via SSH) while not having to boot into and stay on Gnome on the server and run VNC.I noted that when I try to start the Virtual Machine Manager from an NX session, I get an error that VMM is "unable to open a connection to the libvirt management daemon". libvirtd is running, however. And, when I startx on the server and try there, VMM works fine.Is this an inherent problem with the use of VMM, or something correctable?

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Fedora :: Virtual Machine Manager

Jul 30, 2009

I'm having some issues with a windows virtual machine. The system is Fedora 11 and the virtual machine is Windows 2008 Server. If I start the virtual machine from the virtual machine manager, it only has a single cpu despite my setting it to eight. If I start the machine from the command line, I can get four cpus but not eight. In both cases windows seem to display the eight cpus in the device manager (or whatever program it is). It has been suggest that windows was imaged on a four core machine before being loaded on the eight core machine and that something in windows is maxing at four cores. But that doesn't explain why the virtual machine manager can only start one cpu. I just played around on my home machine with a fedora 10 live cd and it recognized the two cores on that machine and used them from the virtual machine manager without problem. Also upped it to three cpus without problem.

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Fedora :: Unable To Use Virtual Machine Manager On F11

Jul 13, 2009

I tried to yum install libvirt but it says it is the latest.I have also checked that i have the latest qemu-kvm virt-manager virt-viewer python-virtinst.I understand that the error msg says that it is unable to find that certain file, libvirt-sock, and i dun think i have it either.

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Fedora :: Virtual Machine Manager Does't Works

Oct 19, 2009

I have the virtual machine manager in fedora 11.On Dell Inspiron 1545 (dual core, 2GB RAM)I can not run any linux distribution virtualized Using Qemu as engine.The virtualized system boots but after not working.Try distributions of 32 and 64 bit.

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Fedora :: Virtual Machine Manager Cannot Start VM

Dec 11, 2009

I get errors when trying to manage my VM with Virtual Machine Manager.When adding the disk img, it complained that it didn't have search rights and tried to fix it but failed.It let me move on so I moved forward.I then built the VM and I couldn;t start it from within VMM.

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Fedora :: Virtual Machine Manager Error

Jan 31, 2010

i have fedora 11 installed on my laptop. i used to run another linux flavor through virtual machine manager but it is giving error. i have just tried it with different flavors. i tired it with BACKTRACK, UBUNTU AND MINT(live cd) each time it gives error. last time i tried with QEMU type connection as loca installation media(iso). with the MINT iso it gave the error.

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Red Hat / Fedora :: Virtual Machine Manager Not Working

Jul 5, 2010

I'm using fedora 13(x86_64).i installed windows xp in the virtual machine manager(which comes along with my distro).i installed it after creating the virtual hard disk,but after completing the installation of windows xp,the hard disk is not booting,it throws an error like the following picture.

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Fedora :: Virtual Machine Manager And Virtualbox Not Working

Jun 18, 2010

i want to run winxp really bad in virtual machine, but have yet to get the programs to open without error.

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Fedora :: Mount .img File Created By Virtual Machine Manager.

Jan 19, 2010

I have a file that was created in Virtual Machine Manager and I need to get it out of the virtual operating system(windowsXP). Writing to a USB would be ideal but that hasn't been working since I upgraded to Fedora12.Is there anyway I can mount the image to retrieve the file?wrong fs type, bad option, bad superblock on /dev/loop0, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so mounting as fvat doesn't work either.

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Fedora Installation :: Virtual Machine Manager Doesn't Want To Start

Sep 27, 2010

installed vmm, then when i tried mounting i get this error message;Unable to open a connection to the libvirt management daemon.

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Fedora :: FC13 Virtual Machine Manager Excrutiatingly Slow

Jul 26, 2011

I used my fc13's "Virtual Machine Manager" to install a FC14 vm image from a new iso.After a week of 8 hour days I got fc14 installed, I think that the "minimal" install option was bad. Now it takes yum 15 minutes to get warmed up. and about an hour for 1 simple package.(It was going in the background while working on other stuff, causing the cpu fan to roar with the extra load)It would be easier to install Fedora on an abacus or perhaps water clock.

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Red Hat / Fedora :: Virtual CPU Allocation - How Much Need To Retain For The The Host

Dec 13, 2010

I plan to use our RHEL6 server as a host for three virtual database servers. When allocating CPU and memory, how much do I need to retain for the the host?

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Fedora Servers :: Can't Create Virtual Machine

Jan 6, 2009

I used qemu sucesfully on F9 but I can't find it on F10. I can't create a virtual machine. I tried installing qemu from rpms that I found on their site without any luck. How can I create a virtual machine on F10?

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Fedora Servers :: Virtual XP Machine On F11 (Init 3)

Aug 27, 2009

We have a virtual XP machine on our fedora 11 install. I want to drop fedora 11 down to init3 (since its a server anyway) and everyone is worried about the windows virtual machine dying. What would happen to my windows virtual machine if I drop the host server to init 3?

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Fedora Servers :: VM Be Copied And Run On Another Virtual Machine?

Jan 28, 2010

host Fedora 12 64bit
KVM virtualization software

I have 8 VMs on this virtual machine running different OS. Can VMs be moved/copied to another PC of similar hardware config running Fedora 12 (64bit) as host and KVM

If Yes, whether copying following files,

e.g. copying following files and paste them on the same /path/to/directory

[root@fedora12 satimis]# ls -l /etc/libvirt/qemu/

Code:
total 52
...
-rw------- 1 root root 1293 2010-01-14 22:48 vm01.xml
-rw------- 1 root root 1293 2010-01-11 17:19 vm02.xml
-rw------- 1 root root 1302 2010-01-11 19:11 vm03_ub9164.xml

[Code]....

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Red Hat :: System Virtual Machine Not Recognizing Memory / Something Else I Need To Do?

Jan 7, 2010

I have a Red Hat 5.3 virtual machine that has 3GB memory. I just upgraded the memory to 4GB, however when I run free -m it still only recognizes 3GB. Is there something else I need to do?

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Fedora :: User Memory Allocation - Set A Maximum Limit On The Amount Of Ram A User Can Utilize?

Jul 24, 2009

I have a few multi-user servers in an academic laboratory. I am having a problem with some users maxing out the available RAM, causing such sever slowdowns the machine essentially crashes. My servers are Dell Power Edge's running Ubuntu 8.10 Server Edition (Not my choice). I would like to set a maximum limit on the amount of ram a user can utilize. This morning I experimented with setting limits via /etc/security/limits.conf and using ulimit. Neither of them prevented my test program, a simple infinite loop of mallocs, from crashing the server.

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Programming :: Process Memory Allocation

Apr 30, 2011

I have been assigned a school project on detecting memory leaks in linux processes. I am reading.. but have found it hard and inefficient to go through the very vast documentation not knowing what to really look for. Could you please give me some guidelines on this subject?

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Programming :: Memory Allocation For Struct In C++?

Mar 30, 2010

How do we allocate memory of struct? what i did was

Code:

int main()
struct amp
{

[code].....

cout <<"The size of 'struct' is"<< sizeof(struct amp)<<"and it is located at"<<struct amp*s = malloc(sizeof(struct amp))<<endl;
it gives me an error---
In funtion 'int main()':
error: expected primary-expression before 'struct'
error: expected ';' before 'struct'

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Fedora Servers :: Port Forward On The Fly Or At Startup With Virt Machine Manager And Kvm-qemu?

Jan 6, 2010

I'm running some vm's in FC12 with kvm-qemu and using virt machine manager. I'd like to have some ports automatically forward on startup and be able to add redirections on the fly. Redirection on the fly is talked about here, but I am getting lost on what should be basic instructions.[URL]

As far as startup, In the past I just ran qemu from the cli and manually specified redirection with redir. I can't figure out how to do it with The virt machine manager which I am using to start my VM's now. I do not want the guests to see the host. From cli startup without virt machine manager, it looked like this: qemu -m 256 -hda vm.img -redir tcp:5555::80 -redir tcp:5556::445 &

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General :: Make Virtual Machine Using Virt-manager?

Mar 31, 2011

Unable to complete install: 'Invalid install location: Mounting location nfs://192.168.1.12/var/ftp/pub/ failed' when i try to make virtual machine using virt-manager. i get this error.why this occur,please tell i take these steps for making virtual m/c.

1 change system ip into static and install virtualization group.

2 make one partition where i want to install vitual m/c

3 then vim /etc/exports, in which i give path where is data and give rw permission to all. then restart services of portmap and nfs.

4 then on login with xen kernel and on terminal i give virt-manager command and follow steps. at last i get above error. where i m wrong,clearify me so i make vir m/c .

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General :: Memory Allocation - How To Disable Overcommit

Oct 17, 2010

I've been looking into memory overcommitting in Linux using /proc/sys/vm/overcommit_memory, and I've read a few articles which don't say the same thing. This doc, under the heading "Going in the wrong direction", goes on to say, "values 1: do overcommit, and 0 (default): don't", but then in the next few lines, it mentions, amongst similar things, that this isn't actually true and that 0 means "guess about how much overcommitment is reasonable". That means that memory overcommit isn't disabled using value 0, right?

It also says that 1 indicates "never refuse any malloc()", with 2 meaning "be precise about the overcommit - never commit a virtual address space larger than swap space plus a fraction overcommit_ratio of the physical memory." The Red Hat magazine, on the other hand states, "if the value is 0, then the kernel checks to determine if there is enough memory free to grant a memory request to a malloc call from an application. If there is enough memory, then the request is granted. Otherwise, it is denied and an error code is returned to the application."

This sounds exactly like disabling overcommit. "If the value is set to 1, then the kernel grants allocations above the amount of physical RAM and swap in the system as defined by the overcommit_ratio value.... If the setting in this file is 2, the kernel allows all memory allocations, regardless of the current memory allocation state." In terms of values 1 and 2, that is the opposite of what the previous doc said, right? What is actually correct, and if it is possible to 'disable' overcommit?

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Programming :: Explorations In Memory Allocation In ANSI C?

Feb 8, 2011

I'm performing some explorations in terms of memory allocations in ANSI C, using the following compiler:

gcc version 4.1.2 20080704 (Red Hat 4.1.2-46)

and I started to try to make the compiler complain for a huge data structure, so I coded this:

[code]....

I mean, I can always read the man entry for gcc but I rather ask because I can then have interaction...

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OpenSUSE :: Virtual Machine Manager Vs. Qemu-kvm Commandline ( Tap Xor Snapshot )?

Mar 28, 2011

I want to experiment with pacemaker, and for that I'd like to start kvm virtual machines with the snapshot option, so that as soon as I stop the vm, all changes are gone and I can start over. Since I couldn't figure out how to setup networking (vm - vm and vm - public) with a kvm commandline without disturbing the Network Manager, I used the Virtual Machine Manager (VMM) for this.

It works now, but I cant see how to use the snapshot option with the VMM. On the other hand, I cant see how I start the resulting vm from the commandline. When I look at the process list, I see the command with these network options:

Code:
-netdev tap,fd=21,id=hostnet0
-device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:45:30:b0,bus=pci.0,addr=0x3
-netdev tap,fd=22,id=hostnet1
-device virtio-net-pci,netdev=hostnet1,id=net1,mac=52:54:00:84:5b:bc,bus=pci.0,addr=0x6

How would I go about these fd=nn things on the commandline? I guess I somehow have to start the tap devices before, but how?

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OpenSUSE :: Virtual Machine Manager - Can't Connect To Localhost Because Libvirtd Is Not Running

Sep 16, 2010

It complains that it can't connect to localhost because probably libvirtd is not running. Well it is running, so please share your wisdom with me. Here is error message:

[Code]....

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OpenSUSE :: Change The Resolution Of The OS Running Inside Virtual Machine Manager?

Jun 7, 2011

I am running Windows 7 inside Virtual Machine Manager - running on Cent OS 5.6. My problem is that the Windows 7 'Window', is only about half the size of the screen. Is there any to change the resolution of the OS running inside Virtual Machine Manager?

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Ubuntu :: Web Based Virtual Machine Manager For Server - Open Source

Feb 20, 2011

Are there any open source Virtual Machines which have web based administration. I am setting up Ubuntu 10.4 x64 and would really like to find a usable virtual machine manager. I really like Virtualbox but only the full version has web based administration. I have also tried VMware but it isn't open source.

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CentOS 5 Server :: Create Qcow2 Image In 5.5 Virtual Machine Manager?

May 18, 2010

I'm trying to set up a virtual machine environment in Centos5.5. My hardware fully supports virtualization, and I'm running qemu as the hypervisor with Virtual Machine Manager as the GUI to manage and create VMs. Host hardware is a Dell PowerEdge T710, with a quad core Xenon processor and four 1TB disks in a raid 6 array.

Within the Virtual Machine Manager when trying to create a new VM, there is the option to not "allocate entire virtual disk now". What format is created when you "allocate entire virtual disk now" and when you don't?

I want to create a qcow2 image format, but it doesn't look like it is supported. Does anybody know how to create a VM with a qcow2 image format?

When you create a blank disk with "qemu-img create -f qcow2 disk.qcow2 3700G", it indeed does create a qcow2 image. However, Virtual Machine Manager is unable to read these images, claiming that it is 15 megs or so in size (which is what it actually occupies in host disk space until you try and put a VM into it).

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