[atomic-devel] atomic scan unable to unmount image under /run/atomic/

[Dharmit Shah <dharmit redhat com>]

Hi,

We've been using this [1] scanner for some time now. So far, we've never
faced any issue with it.

Recently we started seeing an issue wherin once atomic scan mounts the
container image under `/run/atomic`, the unmount doesn't happen
successfully. It errors out with read-only file system message [2]. The
entry is visible in `df -h` output in the same pastebin.

Other scanners we're using [3] don't seem to be facing this issue and I
can see mount point at `/run/atomic` getting free. This particular
scanner is different from others in that it first uses atomic mount to
mount the container image in read-write mode at certain location. No
other scanner has this read-write requirement. However, this was never
an issue so far.

I'm not certain if this is an issue with atomic or device-mapper or my
code. I'm using CentOS 7.3 and atomic-1.17.2-9.git2760e30.el7.x86_64.
Let me know if I need to provide additional info.

Regards,
Dharmit

[1]
https://github.com/CentOS/container-pipeline-service/tree/master/atomic_scanners/pipeline-scanner
[2] http://pastebin.centos.org/123896/
[3]
https://github.com/CentOS/container-pipeline-service/tree/master/atomic_scanners/

-- 
Dharmit Shah
Red Hat Developer Tools (https://developers.redhat.com/)