Images file format 1.1¶
images.json files provide details about images included in composes.
Changes from 1.0¶
- Added ‘type’ field to ‘header’, “productmd.images” required
- Added ‘subvariant’ field to image
File Format¶
Compose images metadata is stored as a JSON serialized dictionary. It’s recommended to sort keys alphabetically and use 4 spaces for indentation in order to read and diff images.json files easily.
{
"header": {
"type": "productmd.images", # metadata type; "productmd.images" required; [new in 1.1]
"version": "1.1" # metadata version; format: $major<int>.$minor<int>
},
"payload": {
"compose": { # see composeinfo for details
"date": <str>,
"id": <str>,
"respin": <int>,
"type": <str>
},
"images": {
variant_uid<str>: { # compose variant UID
arch<str>: [ # compose variant arch
{
"arch": <str>, # image arch
"bootable": <bool>, # can the image be booted?
"checksums": {
type<str>: <str> #
},
"disc_count": <int>, # number of discs in media set
"disc_number": <int>, # disc number
"format": <str>, # see productmd.images.SUPPORTED_IMAGE_FORMATS
"implant_md5": <str|null>, # md5 checksum implanted directly on media (see implantisomd5 and checkisomd5 commands)
"mtime": <int>, # mtime of the image stored as a decimal unix timestamp
"path": <str>, # relative path to the image
"subvariant": <str>, # image content (e.g. 'Workstation' or 'KDE'); [new in 1.1]
"size": <int>, # file size of the image
"type": <str>, # see productmd.images.SUPPORTED_IMAGE_TYPES
"volume_id": <str|null> # volume ID; null if not available/applicable
}
]
}
}
}
}