Cannot check QEMU binary /usr/bin/qemu-kvm: No such file or directory

[rbaumgar]

crc_libvirt.sh create does not run on my RHEL 7.6 CSB

$ ./crc_libvirt.sh create
/dev/kvm
Loaded plugins: changelog, fs-snapshot, priorities, product-id, refresh-packagekit, rhnplugin, rpm-warm-cache, search-disabled-repos, subscription-manager, verify
This system is receiving updates from RHN Classic or Red Hat Satellite.
Repository google-chrome is listed more than once in the configuration
Repository google-talkplugin is listed more than once in the configuration
12935 packages excluded due to repository priority protections
Package libvirt-4.5.0-10.el7_6.3.x86_64 already installed and latest version
Package libvirt-devel-4.5.0-10.el7_6.3.x86_64 already installed and latest version
Package 10:qemu-kvm-1.5.3-160.el7.x86_64 is obsoleted by 10:qemu-kvm-rhev-2.9.0-16.el7_4.13.x86_64 which is already installed
Resolving Dependencies
--> Running transaction check
---> Package libvirt-daemon-kvm.x86_64 0:4.5.0-10.el7_6.3 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

==============================================================================================================================================================================================
Package Arch Version Repository Size

Installing:
libvirt-daemon-kvm x86_64 4.5.0-10.el7_6.3 production-rhel-x86_64-workstation-7.6 181 k

Transaction Summary

Install 1 Package

Total download size: 181 k
Installed size: 0
Downloading packages:
libvirt-daemon-kvm-4.5.0-10.el7_6.3.x86_64.rpm | 181 kB 00:00:00
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Installing : libvirt-daemon-kvm-4.5.0-10.el7_6.3.x86_64 1/1
Verifying : libvirt-daemon-kvm-4.5.0-10.el7_6.3.x86_64 1/1

Installed:
libvirt-daemon-kvm.x86_64 0:4.5.0-10.el7_6.3

Complete!
net.ipv4.ip_forward = 1
active
Warning: ZONE_ALREADY_SET: '192.168.126.0/24' already bound to 'public'
success
Warning: ALREADY_ENABLED: '16509:tcp' already in 'public'
success
Network test1 defined from ./network.xml

Network test1 started

Vol test1-base created

Vol test1-master-0 created

Vol test1-worker-0-98nsr created

error: Failed to define domain from ./master-0.xml
error: Cannot check QEMU binary /usr/bin/qemu-kvm: No such file or directory

error: Failed to define domain from ./test1-worker-0-98nsr.xml
error: Cannot check QEMU binary /usr/bin/qemu-system-x86_64: No such file or directory

Cluster created successfully use './crc_libvirt.sh start' to start it

[praveenkumar]

@rbaumgar looks like we have a missing package to be installed in the script but can you install qemu-system and then run, make sure use ./crc_libvirt.sh delete first?

]$ sudo dnf whatprovides "/usr/bin/qemu-kvm"
[sudo] password for prkumar: 
Last metadata expiration check: 4:47:04 ago on Mon 04 Feb 2019 11:37:13 AM IST.
qemu-system-x86-core-2:2.11.2-4.fc28.x86_64 : QEMU system emulator for x86
Repo        : @System
Matched from:
Filename    : /usr/bin/qemu-kvm

qemu-system-x86-core-2:2.11.2-4.fc28.x86_64 : QEMU system emulator for x86
Repo        : updates
Matched from:
Filename    : /usr/bin/qemu-kvm

qemu-system-x86-core-2:2.11.1-2.fc28.x86_64 : QEMU system emulator for x86
Repo        : fedora
Matched from:
Filename    : /usr/bin/qemu-kvm

[rbaumgar]

I had to fix multiple issues...

• the required package on RHEL is "qemu-system-x86". In my case I got qemu-system-x86-2.0.0-1.el7.6.x86_64.

• the package qemu-system-x86-2.0.0-1.el7.6.x86_64 does not contain the shell "/usr/bin/qemu-kvm". need to update the master-0.xml: from "/usr/bin/qemu-kvm" to "/usr/bin/qemu-system-x86_64"

• when I try to start

$ ./crc_libvirt.sh start
error: Failed to start domain test1-master-0
error: Cannot access backing file '/var/lib/libvirt/images/test1-base' of storage file '/home/rbaumgar/VirtualMachines/test1-master-0' (as uid:107, gid:107): No such file or directory

error: Failed to start domain test1-worker-0-98nsr
error: Cannot access storage file '/var/lib/libvirt/images/test1-worker-0-98nsr' (as uid:107, gid:107): No such file or directory

The "virsh vol-create-as..." creates the files in my home under VirtualMachines. At start qemu searches at
/var/lib/libvirt/images/... Copy test1-base and test1-worker-0-98nsr into /var/lib/libvirt/images/

• then the machine does not fit to the environment. " hvm" change to "hvm"

After all this changes my OpenShift 4 is up and running and I was able to do things like

oc get nodes --config=kubeconfig
oc get pod --all-namespaces `--config=kubeconfig

[gbraad]

These are RHEL7 related issues. To be honest, we might have to do some further testing around this... at the moment we have only targeted Fedora.

[cfergeau]

On RHEL, qemu-kvm is installed in /usr/libexec/qemu-kvm
But you don't need to add an tag at all in your domain definition, libvirt will add it itself.