Partition extras are exported incorrectly when using --output-name #2737

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1. supakeen

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   bugSomething isn't workingSomething isn't working

   on Oct 2, 2026
2. supakeen commented on Oct 2, 2026

   

   supakeen

   on Oct 2, 2026

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   Going to mark this as a bug though I don't really have a good idea on how to solve it. We can't change the semantics of --output-name for the primary artifact because it's pretty load bearing and integrated in many pipelines. There's two issues here:

   1. Duplicate --output-name for extras.
   2. Non-handling of the default extension of extras.

   For the primary artifact we compare the --output-name extension with the 'default' extension of the artifact and drop them if they are the same, we could probably apply the same to extras but that would still be kinda funky because say --output-name disk.raw would produce a disk.raw.erofs in certain cases as well.

   Now we do have an escape hatch; --output-name accepts Go templates so you can conditionally include the name of the extra. For example --output-name 'disk{{- if .Extra.Name -}}-{{- .Extra.Name -}}{{- end }}' (note; don't set the .raw; it'll be added automatically). You'd get disk.raw, disk-esp.raw, disk-root.raw.

   Do you have any ideas how this should work when passing a literal --output-name?
3. onesaladleaf commented on Oct 9, 2026

   

   onesaladleaf

   on Oct 9, 2026

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   Now we do have an escape hatch; --output-name accepts Go templates so you can conditionally include the name of the extra. For example --output-name 'disk{{- if .Extra.Name -}}-{{- .Extra.Name -}}{{- end }}' (note; don't set the .raw; it'll be added automatically). You'd get disk.raw, disk-esp.raw, disk-root.raw.

   Thanks, I'll try that

   Do you have any ideas how this should work when passing a literal --output-name?

   Maybe the extra names could automatically default to e.g. <output-name>-<extra-name>.raw or <extra-name>-<output-name>.raw when --output-name is provided?