docs: Document that systemd-confext and sysext are unsupported - #2436
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Thank you for writing this! |
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| A key reason is that bootc systems commonly use composefs for the root filesystem, | ||
| and may also enable [transient root](#enabling-transient-root) and/or | ||
| [transient `/etc`](#enabling-transient-etc). Each of these features uses overlayfs | ||
| stacking. The Linux kernel limits filesystem stacking depth |
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Hmm, I think this is fixable by using etc = none in current composefs backend, which doesn't have a corresponding ostree knob (but should).
Then confext could take over /etc.
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should we file an issue for this?
State explicitly that bootc has not validated systemd-confext or systemd-sysext on deployed systems. Split the rationale into bootc-specific overlay conflicts (composefs and transient /etc stacking depth) and OS-specific integration concerns (e.g. SELinux), note the etc = none composefs backend option that frees /etc for confext, and point readers to supported per-host configuration alternatives. Assisted-by: AI Signed-off-by: mohan-shash <mokumar@redhat.com>
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I think we'll be following up on this
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Summary
systemd-confext and systemd-sysextsection under/etcinfilesystem.md/etcThis addresses recurring questions where the presence of
systemd-confext/systemd-sysextin the OS image is mistaken for bootc support.Assisted-by: AI - Cursor