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portable: add support for confext

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Support confexts for portable services
This commit is contained in:
Maanya Goenka
2023-11-03 16:59:58 +00:00
committed by Luca Boccassi
parent f0304df6e4
commit db776f6935
8 changed files with 113 additions and 51 deletions
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docs/PORTABLE_SERVICES.md
+9 -7
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@@ -277,12 +277,14 @@ following must be also be observed:
2. The upper extension images must contain an extension-release file in
`/usr/lib/extension-release.d/`, with an `ID=` and `SYSEXT_LEVEL=`/`VERSION_ID=`
matching the base image.
matching the base image for sysexts, or `/etc/extension-release.d/`, with an
`ID=` and `CONFEXT_LEVEL=`/`VERSION_ID=` matching the base image for confexts.
3. The base/OS image does not need to have any unit files.
4. The upper extension images must contain at least one matching unit file
each, with the right name prefix and suffix (see above).
4. The upper sysext images must contain at least one matching unit file each,
with the right name prefix and suffix (see above). Confext images do not have
to contain units.
5. As with the base/OS image, each upper extension image must be a plain
sub-directory, btrfs subvolume, or a raw disk image.
@@ -354,10 +356,10 @@ underscore (`_`) as separator. If only either one is found, it will be used by i
The field will be named `PORTABLE_NAME_AND_VERSION=`.
In case extensions are used, the same fields in the same order are, but prefixed by
`SYSEXT_`, are parsed from each `extension-release` file, and are appended to the
journal as log entries, using `PORTABLE_EXTENSION_NAME_AND_VERSION=` as the field
name. The base layer's field will be named `PORTABLE_ROOT_NAME_AND_VERSION=` instead
of `PORTABLE_NAME_AND_VERSION=` in this case.
`SYSEXT_`/`CONFEXT_`, are parsed from each `extension-release` file, and are appended
to the journal as log entries, using `PORTABLE_EXTENSION_NAME_AND_VERSION=` as the
field name. The base layer's field will be named `PORTABLE_ROOT_NAME_AND_VERSION=`
instead of `PORTABLE_NAME_AND_VERSION=` in this case.
For example, a portable service `app0` using two extensions `app0.raw` and
`app1.raw` (with `SYSEXT_ID=app`, and `SYSEXT_VERSION_ID=` `0` and `1` in their