error injecting data into image when launching from volume

[Wenhao Xu]

branch: master
commit: ae251b99a3fb6aa99ec8898152d79dfa2c026a92

I launch the instance from a sheepdog volume without specifying an image when launching.

The following error occurred:

2013-03-16 01:20:52,245.245 WARNING nova.virt.disk.mount.api [req-851e9cfb-dd90-467c-ba6d-bc12fab96cd5 a41f168874b747249e32e4913e548a27 3433737bbc8b40d385c9cb5d29891804] Device allocation failed after repeated retries.
2013-03-16 01:20:52,245.245 WARNING nova.virt.disk.mount.api [req-851e9cfb-dd90-467c-ba6d-bc12fab96cd5 a41f168874b747249e32e4913e548a27 3433737bbc8b40d385c9cb5d29891804] Device allocation failed after repeated retries.
2013-03-16 01:20:52,246.246 WARNING nova.virt.disk.api [req-851e9cfb-dd90-467c-ba6d-bc12fab96cd5 a41f168874b747249e32e4913e548a27 3433737bbc8b40d385c9cb5d29891804] Ignoring error injecting data into image (Could not attach image to loopback: Unexpected error while running command.
Command: losetup --find --show /var/lib/nova/instances/552cc662-2d98-421d-9f59-50e92915f960/disk
Exit code: 1
Stdout: ''
Stderr: '/var/lib/nova/instances/552cc662-2d98-421d-9f59-50e92915f960/disk: No such file or directory\n')
2013-03-16 01:20:52,246.246 WARNING nova.virt.disk.api [req-851e9cfb-dd90-467c-ba6d-bc12fab96cd5 a41f168874b747249e32e4913e548a27 3433737bbc8b40d385c9cb5d29891804] Ignoring error injecting data into image (Could not attach image to loopback: Unexpected error while running command.
Command: losetup --find --show /var/lib/nova/instances/552cc662-2d98-421d-9f59-50e92915f960/disk
Exit code: 1
Stdout: ''
Stderr: '/var/lib/nova/instances/552cc662-2d98-421d-9f59-50e92915f960/disk: No such file or directory\n')

Clearly, nova tries to inject to an image file that doesn't exist on disk. We may need to skip injecting the data when launching from a volume.

[Wenhao Xu (wenhao-x)]

Does this mean the keypair cannot be injected?

[Chuck Short (zulcss)]

Which version of sheep dog and which os?

[Wenhao Xu (wenhao-x)]

sheepdog 0.5.x branch
os: ubuntu 12.04

[Chuck Short (zulcss)]

can you explain how to reproduce this?

thanks
chuck

[Wenhao Xu (wenhao-x)]

Here are steps to reproduce the bug:

1. install sheepdog from sheepdog's git 0.5.x branch

2. configure cinder to use sheepdog driver
volume_driver=cinder.volume.drivers.sheepdog.SheepdogDriver

3. create a bootable volume in cinder

4. boot from volume
 nova boot --block-device-mapping vda=<volume id> --flavor 1 my-test-instance

[Ray Chen (chenrano2002)]

I can't see this issue on following version. look like it has been fixed.

cinder: 2014.2.dev139.g52b6401,
nova: 2014.2.dev448.g399166b,
sheepdog: 0.8.0_179_g3711bcb

[Ray Chen (chenrano2002)]

https://bugs.launchpad.net/nova/+bug/1190583 looks like related issue