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[Bug 1847793] Re: qemu 4.1.0 - Corrupt guest filesystem after new vm ins
From: |
Max Reitz |
Subject: |
[Bug 1847793] Re: qemu 4.1.0 - Corrupt guest filesystem after new vm install |
Date: |
Tue, 05 Nov 2019 11:41:57 -0000 |
Hi Claus,
Thanks for the info! By now we know that the XFS bug can only be
triggered with aio=native (for -drive), and since you aren’t using that,
you won’t hit that.
I suppose using git master works in the meantime, but in general of
course it isn’t advisable for stability. (Yes, yes, I know, right now
the released version is the broken one... :()
4.1.1 and 4.2.0 will be released soon, which fix the qemu bug.
Hi Wayne,
It applies only to XFS. There are two bugs, one in qemu 4.1.0 (will be
fixed in 4.1.1 and 4.2.0), and one in XFS (we will have a workaround in
4.2.0, and I hope in 4.1.1, too).
Max
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https://bugs.launchpad.net/bugs/1847793
Title:
qemu 4.1.0 - Corrupt guest filesystem after new vm install
Status in QEMU:
New
Bug description:
When I install a new vm with qemu 4.1.0 all the guest filesystems are
corrupt. The first boot from the install dvd iso is ok and the
installer work fine. But the guest system hangs after the installer
finishes and I reboot the guest. I can see the grub boot menue but the
system cannot load the initramfs.
Testet with:
- RedHat Enterprise Linux 7.5, 7.6 and 7.7 (RedHat uses xfs for the /boot and
/ partition)
Guided install with the graphical installer, no lvm selected.
- Debian Stable/Buster (Debian uses ext4 for / and /home partition)
Guidet install with the graphical installer and default options.
Used commandline to create the vm disk image:
qemu-img create -f qcow2 /volumes/disk2-part2/vmdisks/vmtest10-1.qcow2 20G
Used qemu commandline for vm installation:
#!/bin/sh
# vmtest10 Installation
#
/usr/bin/qemu-system-x86_64 -cpu SandyBridge-IBRS \
-soundhw hda \
-M q35 \
-k de \
-vga qxl \
-machine accel=kvm \
-m 4096 \
-display gtk \
-drive
file=/volumes/disk2-part2/images/debian-10.0.0-amd64-DVD-1.iso,if=ide,media=cdrom
\
-drive
file=/volumes/disk2-part2/images/vmtest10-1.qcow2,if=virtio,media=disk,cache=writeback
\
-boot once=d,menu=off \
-device virtio-net-pci,mac=52:54:00:2c:02:6c,netdev=vlan0 \
-netdev bridge,br=br0,id=vlan0 \
-rtc base=localtime \
-name "vmtest10" \
-usb -device usb-tablet \
-spice disable-ticketing \
-device virtio-serial-pci \
-device virtserialport,chardev=spicechannel0,name=com.redhat.spice.0 \
-chardev spicevmc,id=spicechannel0,name=vdagent $*
Host OS:
Archlinux (last updated at 10.10.2019)
Linux testing 5.3.5-arch1-1-ARCH #1 SMP PREEMPT Mon Oct 7 19:03:08 UTC 2019
x86_64 GNU/Linux
No libvirt in use.
With qemu 4.0.0 it works fine without any errors.
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