CentOS 7 Virtual machine boot appears Permission denied

Os:centos 7

Using Virt-manager to add virtual machines under CentOS 7, after a successful configuration, when you start the virtual machine, a prompt appears:

QEMU-KVM:-drive file=/var/lib/libvirt/images/aloeccnode_v2.1.qcow2,if=none,id=drive-ide0-0-0,format=qcow2:could Not open disk image/var/lib/libvirt/images/aloeccnode_v2.1.qcow2:could not open file:permission denied

Causes the virtual machine to fail to create successfully.

To view the image file permissions:

[Email protected] log]# ll/var/lib/libvirt/images/
Total 30410756
-rw-r--r--. 1 qemu qemu 31132352512 16:02 aloeccnode_v2.1.qcow2

Discovery file Permissions Qemu is accessible.

To view LIBVIRTD log information:

2015-08-13 03:03:54.679+0000:starting up

Lc_all=c Path=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin Qemu_audio_drv=spice/usr/libexec/qemu-kvm-name Aloeccnode-s-machine pc-i440fx-rhel7.0.0,accel=kvm,usb=off-cpu haswell-m 8192-realtime mlock=off-smp 4,sockets=4,co Res=1,threads=1-uuid 078f6d2d-0cde-4e7c-956c-179bfd62993a-no-user-config-nodefaults-chardev socket,id= Charmonitor,path=/var/lib/libvirt/qemu/aloeccnode.monitor,server,nowait-mon Chardev=charmonitor,id=monitor,mode =CONTROL-RTC Base=utc,driftfix=slew-global Kvm-pit.lost_tick_policy=discard-no-hpet-no-reboot-global PIIX4_ Pm.disable_s3=1-global piix4_pm.disable_s4=1-boot Strict=on-device ich9-usb-ehci1,id=usb,bus=pci.0,addr=0x5.0x7- Device Ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pci.0,multifunction=on,addr=0x5-device Ich9-usb-uhci2, Masterbus=usb.0,firstport=2,bus=pci.0,addr=0x5.0x1-device ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pci.0, Addr=0x5.0x2-device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x6-drive file=/var/lib/liBvirt/images/aloeccnode_v2.1.qcow2,if=none,id=drive-ide0-0-0,format=qcow2-device ide-hd,bus=ide.0,unit=0,drive= Drive-ide0-0-0,id=ide0-0-0,bootindex=2-drive file=/var/lib/libvirt/images/aloeccnode_v2.1.qcow2,if=none,id= Drive-ide0-0-1,readonly=on,format=qcow2-device Ide-cd,bus=ide.0,unit=1,drive=drive-ide0-0-1,id=ide0-0-1, Bootindex=1-netdev Tap,fd=23,id=hostnet0-device rtl8139,netdev=hostnet0,id=net0,mac=52:54:00:9d:e0:20,bus=pci.0, Addr=0x3-chardev Pty,id=charserial0-device Isa-serial,chardev=charserial0,id=serial0-chardev spicevmc,id= Charchannel0,name=vdagent-device Virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name =com.redhat.spice.0-spice PORT=5900,ADDR=127.0.0.1,DISABLE-TICKETING,SEAMLESS-MIGRATION=ON-VGA Qxl-global Qxl-vga.ram_size=67108864-global Qxl-vga.vram_size=67108864-global Qxl-vga.vgamem_mb=16-device intel-hda,id= Sound0,bus=pci.0,addr=0x4-device Hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0-chardev Spicevmc,id=charredir0, Name=usbRedir-device Usb-redir,chardev=charredir0,id=redir0-chardev Spicevmc,id=charredir1,name=usbredir-device Usb-redir , Chardev=charredir1,id=redir1-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x7-msg Timestamp=on
Char Device redirected TO/DEV/PTS/3 (label charserial0)

2015-08-13t03:03:54.712819z QEMU-KVM:-drive file=/var/lib/libvirt/images/aloeccnode_v2.1.qcow2,if=none,id= Drive-ide0-0-0,format=qcow2:could not open disk image/var/lib/libvirt/images/aloeccnode_v2.1.qcow2:could not open File:permission denied

The SELinux control permission is caused by the network query discovery.

Turn off system SELinux and set it to disable.

# Setenforce 0

# sed-i '/^selinux/s/enforcing/disabled/'/etc/selinux/config

Restart the LIBVIRTD service.

Start the virtual machine again to start successfully.

Copyright NOTICE: This article for Bo Master original article, without Bo Master permission not reproduced.

CentOS 7 Virtual machine boot appears Permission denied