On 11.01.19 09:33, Michael Hinton wrote:
Hello,
I'm trying to increase the size of an existing jailhouse QEMU image. So far,
I've been going through this guide: https://gist.github.com/larsks/3933980
I am able to increase the image size with `qemu-img resize <image> +10G`, and
once inside the image, running `fdisk /dev/sda` and then `p` shows that the disk
indeed increased in size. Interestingly, though, the `disklabel` is `dos`, not `gpt`,
and no devices show up. It seems that there are no partitions (at least that fdisk
recognizes).
After I create a partition by walking through the defaults to the `n` command, I write
with the `w` command and see a "rereading the partition table failed: " error.
But when I do the `p` command, I can see a partition that takes up the entire disk.
However, when I reboot, it fails with the following errors:
"mount: No such file or directory"
"run-init: current directory on the same filesystem as root: error 0"
"Target filesystem doesn't have requested /sbin/init"
"no init found. Try passing init= bootarg"
I realize that blindly creating a partition like this likely overwrites
whatever boot partition there was. But I'm not familiar enough with partitions
to know where to go from here, or why the original partition isn't showing up
in the first place.
Any help is appreciated.
I suppose you are referring to a QEMU image created by jailhouse-images,
correct? Those images consist of a plain rootfs image, no partitioning involved
there. So you can simply run "resizefs <image-file>" after the "qemu-img resize".
Jan
--
Siemens AG, Corporate Technology, CT RDA IOT SES-DE
Corporate Competence Center Embedded Linux
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