Use a fixed directory in `/run/...` as lower dir

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#66 2 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
35/100
Issue type
Feature
Clarity
Needs clarification
Activity status
Stale
Tech stack
rust
Domain
operating-systems

Research direction

Start by searching the repository for the temporary lower-directory setup described in issue 66 and review how the mount configuration is assembled. Compare the result with the composefs/ostree example, then validate completion by checking that findmnt reports a fixed lower directory under /run rather than a temporary path under /tmp.

Written by the indexing model from the issue text.

Description

Until we start using and relying on loop less mounting / direct file/fd mounting, we should use a fixed directory in /run/... as lower dir instead of a temporary one in /tmp.

[root@fedora ~]# findmnt /
TARGET SOURCE FSTYPE  OPTIONS
/      none   overlay ro,relatime,seclabel,lowerdir+=/tmp/.tmpvKg9Y9,datadir+=/sysroot/composefs/objects,redirect_dir=on,metacopy=on,verity=require

composefs/ostree:

coreos@fcos$ findmnt /
TARGET SOURCE    FSTYPE  OPTIONS
/      composefs overlay ro,relatime,seclabel,lowerdir+=/run/ostree/.private/cfsroot-lower,datadir+=/sysroot/ostree/repo/objects,redirect_dir=on,metacopy=on
Dominant language
Rust
Stars
93
Forks
30
Avg merge
2d 10h
Merged PRs (30d)
13

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