URL:
<https://savannah.gnu.org/bugs/?55656>
Summary: grub fails to read LVM LV with qemu sata drive on
some LVM layouts
Project: GNU GRUB
Submitted by: bain
Submitted on: Wed 06 Feb 2019 05:52:36 PM UTC
Category: Filesystem
Severity: Major
Priority: 5 - Normal
Item Group: Software Error
Status: None
Privacy: Public
Assigned to: None
Originator Name:
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Release:
Release: 2.02
Reproducibility: Every Time
Planned Release: None
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Details:
Run attached "go" script. This creates a VM with:
qemu-img create -q -f qcow2 -o preallocation=metadata ${vm}.qcow2 80G
virt-install --name test --ram 2048 --disk path=test.qcow2,bus=sata \
--vcpus 1 --os-type linux --os-variant centos7.0 \
--location http://mirror.bytemark.co.uk/centos/7.6.1810/os/x86_64 \
--extra-args "ks=file:/test.ks console=ttyS0" \
--console pty,target_type=serial --initrd-inject test.ks --graphics none \
--check disk_size=off
After kickstart install, anaconda will reboot, and then grub will fail to load
the kernel from LVM LV. The issue appears to be the "bus=sata" which causes
virt-install to run qemu like:
qemu-system-x86_64 -enable-kvm -cpu host -m 2G -nographic \
-device ahci,id=sata0,bus=pci.0,addr=0x5 \
-drive file=~/test.qcow2,format=qcow2,if=none,id=drive-sata0-0-0 \
-device ide-hd,bus=sata0.0,drive=drive-sata0-0-0,id=sata0-0-0,bootindex=1
Manually running qemu with "... -hda test.qcow2" (instead of the above) works
ok (sda appears as SCSI drive).
Using "virt-install --disk path=test.qcow2,bus=virtio" also works ok (vda
appears as virtio drive).
This seems to be sensitive to the particular LVM layout - not creating the
extra 2 logical volumes works ok. Maybe the changes in LVM layout causes grub
to attempt reading bytes beyond some limit, which fails.
The easy workaround appears to be to remove "virt-install ... bus=sata"
argument (and use default SCSI) or use "bus=virtio".
_______________________________________________________
File Attachments:
-------------------------------------------------------
Date: Wed 06 Feb 2019 05:52:36 PM UTC Name: test.ks Size: 2KiB By: bain
<http://savannah.gnu.org/bugs/download.php?file_id=46192>
-------------------------------------------------------
Date: Wed 06 Feb 2019 05:52:36 PM UTC Name: go Size: 496B By: bain
<http://savannah.gnu.org/bugs/download.php?file_id=46193>
_______________________________________________________
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<https://savannah.gnu.org/bugs/?55656>
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