1. Download ubuntu-19.04-live-server-amd64.iso from
https://ubuntu.com/#download
2. Confirm I have the same sha1sum as published from
http://releases.ubuntu.com/19.04/SHA1SUMS
3. Boot the ISO in a qemu kvm VM using virt-manager
4. Choose 'check disk for defects' option - disk passes
5. Boot again, switch to tty2
6. dmesg | grep SQUASHFS
Actual result:
Multiple squashfs related read errors
[ 4.769520] SQUASHFS error: squashfs_read_data failed to read block 0x6261746d79732e
[ 4.769548] SQUASHFS error: Unable to read metadata cache entry [6261746d79732e]
Expected result:
squashfs shouldn't complaint about errors in the image
Additional information:
The block address reported is different each time I boot. There are always five errors, but the block addresses differ each boot.
Complete qemu command for the VM
/usr/bin/qemu-system-x86_64 -name guest=uefivm,debug-threads=on -S -object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-5-uefivm/master-key.aes -machine pc-q35-4.0,accel=kvm,usb=off,vmport=off,dump-guest-core=off -cpu SandyBridge-IBRS,vme=on,ss=on,vmx=on,pcid=on,hypervisor=on,arat=on,tsc-adjust=on,umip=on,md-clear=on,stibp=on,arch-capabilities=on,ssbd=on,xsaveopt=on,skip-l1dfl-vmentry=on -drive file=/usr/share/edk2/ovmf/OVMF_CODE.fd,if=pflash,format=raw,unit=0,readonly=on -drive file=/var/lib/libvirt/qemu/nvram/uefivm_VARS.fd,if=pflash,format=raw,unit=1 -m 3072 -overcommit mem-lock=off -smp 4,sockets=4,cores=1,threads=1 -uuid 05d0a9c8-6a0e-4bbc-b36c-5e0082b987ee -no-user-config -nodefaults -chardev socket,id=charmonitor,fd=37,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc,driftfix=slew -global kvm-pit.lost_tick_policy=delay -no-hpet -no-shutdown -global ICH9-LPC.disable_s3=1 -global ICH9-LPC.disable_s4=1 -boot strict=on -device pcie-root-port,port=0x10,chassis=1,id=pci.1,bus=pcie.0,multifunction=on,addr=0x2 -device pcie-root-port,port=0x11,chassis=2,id=pci.2,bus=pcie.0,addr=0x2.0x1 -device pcie-root-port,port=0x12,chassis=3,id=pci.3,bus=pcie.0,addr=0x2.0x2 -device pcie-root-port,port=0x13,chassis=4,id=pci.4,bus=pcie.0,addr=0x2.0x3 -device pcie-root-port,port=0x14,chassis=5,id=pci.5,bus=pcie.0,addr=0x2.0x4 -device pcie-root-port,port=0x15,chassis=6,id=pci.6,bus=pcie.0,addr=0x2.0x5 -device pcie-root-port,port=0x16,chassis=7,id=pci.7,bus=pcie.0,addr=0x2.0x6 -device qemu-xhci,p2=15,p3=15,id=usb,bus=pci.2,addr=0x0 -device virtio-serial-pci,id=virtio-serial0,bus=pci.3,addr=0x0 -drive file=/var/lib/libvirt/images/untitled.qcow2,format=qcow2,if=none,id=drive-virtio-disk0,cache=unsafe,aio=threads -device virtio-blk-pci,scsi=off,bus=pci.4,addr=0x0,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=2,write-cache=on -drive file=/var/lib/libvirt/images/ubuntu-19.04-live-server-amd64.iso,format=raw,if=none,id=drive-sata0-0-0,readonly=on -device ide-cd,bus=ide.0,drive=drive-sata0-0-0,id=sata0-0-0,bootindex=1 -netdev tap,fd=39,id=hostnet0,vhost=on,vhostfd=40 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:7c:25:f9,bus=pci.1,addr=0x0 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -chardev socket,id=charchannel0,fd=41,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,bus=usb.0,port=1 -spice port=5900,addr=127.0.0.1,disable-ticketing,image-compression=off,seamless-migration=on -device qxl-vga,id=video0,ram_size=67108864,vram_size=67108864,vram64_size_mb=0,vgamem_mb=16,max_outputs=1,bus=pcie.0,addr=0x1 -device ich9-intel-hda,id=sound0,bus=pcie.0,addr=0x1b -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -chardev spicevmc,id=charredir0,name=usbredir -device usb-redir,chardev=charredir0,id=redir0,bus=usb.0,port=2 -chardev spicevmc,id=charredir1,name=usbredir -device usb-redir,chardev=charredir1,id=redir1,bus=usb.0,port=3 -device virtio-balloon-pci,id=balloon0,bus=pci.5,addr=0x0 -object rng-random,id=objrng0,filename=/dev/urandom -device virtio-rng-pci,rng=objrng0,id=rng0,bus=pci.6,addr=0x0 -sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny -msg timestamp=on
host info:
CPU i7-2820QM
8GiB RAM, 8GiB swap on ZRAM
kernel 5.2.11-200.fc30.x86_64
qemu-kvm-4.1.0-1.fc31.x86_64
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