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Diffstat (limited to 'results/classifier/gemma3:12b/device/613529')
| -rw-r--r-- | results/classifier/gemma3:12b/device/613529 | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/results/classifier/gemma3:12b/device/613529 b/results/classifier/gemma3:12b/device/613529 new file mode 100644 index 000000000..d6c2b8162 --- /dev/null +++ b/results/classifier/gemma3:12b/device/613529 @@ -0,0 +1,14 @@ + +qemu does not accept regular disk geometry + +Hi, + +I am currently hunting a strange bug in qemu/kvm: + +I am using an lvm logical volume as a virtual hard disk for a virtual machine. + +I use fdisk or parted to create a partition table and partitions, kpartx to generate the device entries for the partitions, then install linux on ext3/ext4 with grub or msdos filesystem with syslinux. + +But then, in most cases even the boot process fails or behaves strangely, sometimes even mounting the file system in the virtual machine fails. It seems as if there is a problem with the virtual disk geometry. The problem does not seem to occur if I reboot the host system after creating the partition table on the logical volume. I guess the linux kernel needs to learn the disk geometry by reboot. A blkdev --rereadpt does not work on lvm volumes. + +The first approach to test/fix the problem would be to pass the disk geometry to qemu/lvm with the -drive option. Unfortunately, qemu/kvm does not accept the default geometry with 255 heads and 63 sectors. Seems to limit the number of heads to 16, thus limiting the disk size. \ No newline at end of file |