Max size of image

[muhmud]

Is there a maximum size for a kernel+initrd format image?

I'm having problems creating an image larger than 4GB, and was interested to know whether this was a limitation.

[deitch]

Not that I am aware of. What error messages are you getting?

[muhmud]

So, using version 0.8, the image builds OK, and also boots OK, but has files missing.

I inspected the image by running gunzip, and then cpio on the decompressed image, which then gave me messages about garbage data at the start of the file. The type of cpio image is SVR4, which has a maximum size of 4GB. I'm thinking maybe this is the problem?

I'm planning to try this with the latest version of linuxkit in the next few days.

[muhmud]

I tried using the latest version of linuxkit and got the same issue.

[polarroyo]

I have been able to reproduce the same issue with v1.0.1. I build with formats:

• kernel+initrd (size: 432MB)
  kernel loads, but one of my container service (docker image is ~900MB) errors that can not start because can not mount folder because it does not exist on host fs.
  I checked with command lz4cat [initrd.img] | cpio -tiv | grep [missing_folder] and the folder and files are present in the host fs.
  The files are injected as per sshd example

• iso-bios (size: 1,2GB)
  all works fine.

Lowering my container service (~150MB) and thus reducing the final image of the build to:

• kernel+initrd (size: 132MB)
• iso-bios (size: 403MB)
  Fixed my issue and both outputs works fine.