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Atomic overlay file application in wwclient

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Update wwclient such that each file in the runtime overlay is applied
atomically, and only if modified.

- Closes: #1307
- Closes: #1975
- Closes: #1226

Also adds --once flag to allow wwclient to be run one time.

Signed-off-by: Jonathon Anderson <janderson@ciq.com>
This commit is contained in:
Jonathon Anderson
2025-08-12 15:57:15 -06:00
parent dd38e739e5
commit 32ca0a9170
5 changed files with 417 additions and 46 deletions
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userdocs/nodes/disks.rst
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@@ -130,7 +130,7 @@ mounted. If partitions or file systems already exist on the disk, ``ignition``
tries to reuse existing file systems by default.
To ignore existing file systems and provision fresh file systems on each boot,
specify the ``--fswipe``` flag for that filesystem, and ``--diskwipe`` for the
specify the ``--fswipe`` flag for that filesystem, and ``--diskwipe`` for the
disk, as necessary.
If you would like to re-use existing partitions but want to replace existing