[Qemu-devel] [Bug 1428958] [NEW] random IO errors / data corruption in VMs (created and executed via virt-manager)

[Dmitry Sutyagin <dsutyagin@mirantis.com>]

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

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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

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