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[Qemu-devel] [Bug 1428958] Re: random IO errors / data corruption in VMs


From: Kevin Wolf
Subject: [Qemu-devel] [Bug 1428958] Re: random IO errors / data corruption in VMs (created and executed via virt-manager)
Date: Wed, 11 Mar 2015 12:11:57 -0000

Can you please retry with current qemu.git master? I suspect that this
is a duplicate of https://bugs.launchpad.net/qemu/+bug/1422307 and fixed
in commit f0ab6f10 (a bug in the code handling VirtualBox's VDI image
format).

In general, running VMs with image formats of other hypervisors is not
recommended, both for reliability and performance reasons. You may want
to consider using qcow2 or raw instead.

-- 
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

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