Oracle KVM qemu-kvm: unable to map backing store for guest RAM: Cannot allocate memory"

Oracle KVM Service fails to start with following error:

#virsh start db-node1

error: Failed to start domain 'db-node1'

error: internal error: QEMU unexpectedly closed the monitor (vm='db-node1'): 2024-04-08Tqemu-kvm: unable to map backing store for guest RAM: Cannot allocate memory

This issue is happening due to the wrong version of the packages:

# rpm -qa | grep qemu

qemu-img-8.0.0-16.el9_3.1.x86_64

libvirt-daemon-driver-qemu-9.5.0-7.0.1.el9_3.x86_64

qemu-kvm-tools-8.0.0-16.el9_3.1.x86_64

qemu-pr-helper-8.0.0-16.el9_3.1.x86_64

qemu-kvm-docs-8.0.0-16.el9_3.1.x86_64

ipxe-roms-qemu-20200823-9.git4bd064de.el9_0.noarch

qemu-kvm-common-8.0.0-16.el9_3.1.x86_64

qemu-kvm-device-display-virtio-gpu-8.0.0-16.el9_3.1.x86_64

qemu-kvm-ui-opengl-8.0.0-16.el9_3.1.x86_64

qemu-kvm-ui-egl-headless-8.0.0-16.el9_3.1.x86_64

qemu-kvm-device-display-virtio-gpu-pci-8.0.0-16.el9_3.1.x86_64

qemu-kvm-block-blkio-8.0.0-16.el9_3.1.x86_64

qemu-kvm-block-rbd-8.0.0-16.el9_3.1.x86_64

qemu-kvm-device-display-virtio-vga-8.0.0-16.el9_3.1.x86_64

qemu-kvm-device-usb-host-8.0.0-16.el9_3.1.x86_64

qemu-kvm-device-usb-redirect-8.0.0-16.el9_3.1.x86_64

qemu-kvm-audio-pa-8.0.0-16.el9_3.1.x86_64

qemu-kvm-core-8.0.0-16.el9_3.1.x86_64

qemu-kvm-8.0.0-16.el9_3.1.x86_64

Solution:

Remove all wrong version of rpms and install new rpms using the correct version of repository:

$ cat etc/yum.repos.d/virt-ol9.repo

[ol9_kvm_utils]

name=Oracle Linux 9 KVM Utilities ($basearch)

baseurl=https://yum$ociregion.$ocidomain/repo/OracleLinux/OL9/kvm/utils/$basearch/

gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle

gpgcheck=1

Now you should be able to start the problematic VM without any issues.

Hope it helps :)

regards,

ZAHEER

Comments

Disable Firewall on Oracle Linux 8

In this blogpost we will see how we can stop/disable the firewall on Oracle Linux 8, the firewall command is same in both linux 7 an linux 8. The below listed is the procedure for stopping and disabling the firewall on Oracle Linux 8. - Here we can see the firewall deamon in active state - Here when we stop the firewall in previous command, now the firewall daemon is dead - For permanent disabling the firewall on server, we can use "disable" option The following commands will be helpful: #systemctl status firewalld #systemctl stop firewalld #systemctl disable firewalld #systemctl enable firewalld #systemctl start firewalld Hope it helps !! Thanks for reading :) regards, X A H E E R

Enable Desktop on Oracle Solaris 11.4

Oracle Solaris 11 installation has multiple options to choose for installation of an Operating Environment, but mostly Oracle Solaris text install media is used and this installation media doesn't offer the GUI Desktop Environment by default after the installation. This blog post will explain how we can enable the desktop for Oracle Solaris 11.4 operating system, after the completion of installation. We have to install "solaris-desktop" package and reboot the machine and GUI desktop will be enabled for the Operating System. In this blog post my virtual machine is connected to the internet and hence I am able to use available pupblic repository for package installation, if in case internet is not available for the server/machine then we have configure the local/Server repository for the installation. Follow the below steps for desktop package installation: After installation of dekstop package we are now able to login with GUI desktop environment...

Oracle AVDF Installation and Setup Document

This blogpost will provide you detailed information about Oracle Audit Vault and Database Firewall (Oracle AVDF) setup. Oracle AVDF is a comprehensive Database Activity Monitoring (DAM) solution that integrates with native audit data. Environment Setup: [oracrp@ebs-dev2-db01 ~]$ mkdir -pv /oradb/oracle/avcli mkdir: created directory ‘/oradb/oracle/avcli’ [oracrp@ebs-dev2-db01 ~]$ mkdir -pv /oradb/oracle/avagent mkdir: created directory ‘/oradb/oracle/avagent’ [oracrp@ebs-dev2-db01 ~]$ - Add these variables to the environment file vi DEV2CDB.env # AVS export AVCLI_HOME="/oradb/oracle/avcli" export AV_HOME="/oradb/oracle/avagent" export PATH="$PATH:$AV_HOME/bin" Download the JAR files: AVDF installation requires one network interface card on respective hosts. IP assigned to AV server NIC will communicate with target databases and IP assigned to DF server will connect to AV Download - Agent jar file: Login to AV console as avadmin user - Go t...

Apps DBA Workshop

Search This Blog