Public bug reported: I have recurring problems with VM installation and usage - data on VM disk gets corrupted at some point and it causes all sorts of problems - sometimes I cannot even install base system, other times some .so files are corrupt after isntallation, etc - totally random. I use virt-manager to create and run VMs. I have also tried creating VMs via virt-install, result is identical. If I use VirtualBox I have no such problems. My OS is Fedora 20 upgraded to 21, qemu and libvirt are installed from Fedora official repos.
Here's an example qemu command-line: /usr/bin/qemu-system-x86_64 -machine accel=kvm -name fuel -S -machine pc-i440fx-2.1,accel=kvm,usb=off -cpu SandyBridge,+invpcid,+erms,+bmi2,+smep,+avx2,+bmi1,+fsgsbase,+abm,+pdpe1gb,+rdrand,+f16c,+osxsave,+movbe,+pcid,+pdcm,+xtpr,+fma,+tm2,+est,+smx,+vmx,+ds_cpl,+monitor,+dtes64,+pbe,+tm,+ht,+ss,+acpi,+ds,+vme -m 3142 -realtime mlock=off -smp 2,sockets=2,cores=1,threads=1 -uuid 27693a46-7a50-4a3c-bcaf-bf061ba469ed -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/fuel.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-shutdown -boot menu=on,strict=on -device ich9-usb-ehci1,id=usb,bus=pci.0,addr=0x6.0x7 -device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pci.0,multifunction=on,addr=0x6 -device ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pci.0,addr=0x6.0x1 -device ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pci.0,addr=0x6.0x2 -device lsi,id=scsi0,bus=pci.0,addr=0xa -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x7 -drive file=/home/virtual-disks/fuel.vdi,if=none,id=drive-virtio-disk0,format=vdi -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x8,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -drive file=/home/dsutyagin/Downloads/iso/MirantisOpenStack-6.0.iso,if=none,id=drive-scsi0-0-0,readonly=on,format=raw -device scsi-cd,bus=scsi0.0,scsi-id=0,drive=drive-scsi0-0-0,id=scsi0-0-0,bootindex=2 -netdev tap,fd=23,id=hostnet0,vhost=on,vhostfd=24 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:0d:42:2d,bus=pci.0,addr=0x3 -netdev tap,fd=25,id=hostnet1,vhost=on,vhostfd=26 -device virtio-net-pci,netdev=hostnet1,id=net1,mac=52:54:00:a4:8c:ef,bus=pci.0,addr=0x4 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -chardev socket,id=charchannel0,path=/var/lib/libvirt/qemu/channel/target/fuel.org.qemu.guest_agent.0,server,nowait -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=org.qemu.guest_agent.0 -chardev spicevmc,id=charchannel1,name=vdagent -device virtserialport,bus=virtio-serial0.0,nr=2,chardev=charchannel1,id=channel1,name=com.redhat.spice.0 -device usb-tablet,id=input0 -spice port=5900,addr=127.0.0.1,disable-ticketing,seamless-migration=on -device qxl-vga,id=video0,ram_size=67108864,vram_size=67108864,bus=pci.0,addr=0x2 -device intel-hda,id=sound0,bus=pci.0,addr=0x5 -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=0x9 -msg timestamp=on If this is not a bug, I'd be happy if you help me fix this problem. I am sorry if this is not the proper place to post such a problem. qemu-system-x86_64 --version QEMU emulator version 2.1.3 (qemu-2.1.3-2.fc21), Copyright (c) 2003-2008 Fabrice Bellard qemu-kvm --version QEMU emulator version 2.1.3 (qemu-2.1.3-2.fc21), Copyright (c) 2003-2008 Fabrice Bellard ** Affects: qemu Importance: Undecided Status: New -- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1428958 Title: random IO errors / data corruption in VMs (created and executed via virt-manager) Status in QEMU: New Bug description: I have recurring problems with VM installation and usage - data on VM disk gets corrupted at some point and it causes all sorts of problems - sometimes I cannot even install base system, other times some .so files are corrupt after isntallation, etc - totally random. I use virt-manager to create and run VMs. I have also tried creating VMs via virt-install, result is identical. If I use VirtualBox I have no such problems. My OS is Fedora 20 upgraded to 21, qemu and libvirt are installed from Fedora official repos. Here's an example qemu command-line: /usr/bin/qemu-system-x86_64 -machine accel=kvm -name fuel -S -machine pc-i440fx-2.1,accel=kvm,usb=off -cpu SandyBridge,+invpcid,+erms,+bmi2,+smep,+avx2,+bmi1,+fsgsbase,+abm,+pdpe1gb,+rdrand,+f16c,+osxsave,+movbe,+pcid,+pdcm,+xtpr,+fma,+tm2,+est,+smx,+vmx,+ds_cpl,+monitor,+dtes64,+pbe,+tm,+ht,+ss,+acpi,+ds,+vme -m 3142 -realtime mlock=off -smp 2,sockets=2,cores=1,threads=1 -uuid 27693a46-7a50-4a3c-bcaf-bf061ba469ed -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/fuel.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-shutdown -boot menu=on,strict=on -device ich9-usb-ehci1,id=usb,bus=pci.0,addr=0x6.0x7 -device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pci.0,multifunction=on,addr=0x6 -device ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pci.0,addr=0x6.0x1 -device ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pci.0,addr=0x6.0x2 -device lsi,id=scsi0,bus=pci.0,addr=0xa -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x7 -drive file=/home/virtual-disks/fuel.vdi,if=none,id=drive-virtio-disk0,format=vdi -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x8,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -drive file=/home/dsutyagin/Downloads/iso/MirantisOpenStack-6.0.iso,if=none,id=drive-scsi0-0-0,readonly=on,format=raw -device scsi-cd,bus=scsi0.0,scsi-id=0,drive=drive-scsi0-0-0,id=scsi0-0-0,bootindex=2 -netdev tap,fd=23,id=hostnet0,vhost=on,vhostfd=24 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:0d:42:2d,bus=pci.0,addr=0x3 -netdev tap,fd=25,id=hostnet1,vhost=on,vhostfd=26 -device virtio-net-pci,netdev=hostnet1,id=net1,mac=52:54:00:a4:8c:ef,bus=pci.0,addr=0x4 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -chardev socket,id=charchannel0,path=/var/lib/libvirt/qemu/channel/target/fuel.org.qemu.guest_agent.0,server,nowait -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=org.qemu.guest_agent.0 -chardev spicevmc,id=charchannel1,name=vdagent -device virtserialport,bus=virtio-serial0.0,nr=2,chardev=charchannel1,id=channel1,name=com.redhat.spice.0 -device usb-tablet,id=input0 -spice port=5900,addr=127.0.0.1,disable-ticketing,seamless-migration=on -device qxl-vga,id=video0,ram_size=67108864,vram_size=67108864,bus=pci.0,addr=0x2 -device intel-hda,id=sound0,bus=pci.0,addr=0x5 -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=0x9 -msg timestamp=on If this is not a bug, I'd be happy if you help me fix this problem. I am sorry if this is not the proper place to post such a problem. qemu-system-x86_64 --version QEMU emulator version 2.1.3 (qemu-2.1.3-2.fc21), Copyright (c) 2003-2008 Fabrice Bellard qemu-kvm --version QEMU emulator version 2.1.3 (qemu-2.1.3-2.fc21), Copyright (c) 2003-2008 Fabrice Bellard To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1428958/+subscriptions