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Description of problem:
Package scriptlets are trying to create/write/remove files under /var (see [specfile](https://gitlab.com/redhat/centos-stream/rpms/kmod-kvdo/-/blob/c9s/kmod-kvdo.spec#L68-80)):
```
%post
modules=( $(find /lib/modules/%{kmod_headers_version}/extra/kmod-%{kmod_name} | grep '\.ko$') )
printf '%s\n' "${modules[@]}" >> /var/lib/rpm-kmod-posttrans-weak-modules-add
%pretrans -p <lua>
posix.unlink("/var/lib/rpm-kmod-posttrans-weak-modules-add")
```
/var does not belong to packages, but should write to their own /usr location.
Ultimately this fails installation in R/O operating systems such as ostree.
Version-Release number of selected component (if applicable): 9
How reproducible: 100%
Steps to Reproduce:
1. rpm-ostree -A install kmod-kvdo
Actual results:
error: Running %post for kmod-kvdo: bwrap(/bin/sh): Child process killed by signal 1; run `journalctl -t 'rpm-ostree(kmod-kvdo.post)'` for more information
Jul 01 15:25:47 localhost.localdomain rpm-ostree(kmod-kvdo.post)[12991]: /proc/self/fd/5: line 2: /var/lib/rpm-kmod-posttrans-weak-modules-add: Read-only file system
Expected results:
# rpm-ostree install kvdo
...
Success!
Additional info:
This blocks CKI gating against RHIVOS and AutoSD images
Comment 2Susan LeGendre-McGhee
2022-09-21 12:44:25 UTC
kmod-kvdo 8.2.0.18-47.el9_2 corrects this issue and has been merged to CentOS 9 Stream.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (kmod-kvdo bug fix and enhancement update), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHBA-2023:2461