diff options
Diffstat (limited to 'Command')
| -rw-r--r-- | Command/Migrate.hs | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/Command/Migrate.hs b/Command/Migrate.hs index 0b23c2a40..d486eeb09 100644 --- a/Command/Migrate.hs +++ b/Command/Migrate.hs @@ -11,6 +11,7 @@ import Common.Annex import Command import Backend import qualified Types.Key +import qualified Types.Backend import Types.KeySource import Annex.Content import qualified Command.ReKey @@ -26,7 +27,7 @@ start :: FilePath -> (Key, Backend) -> CommandStart start file (key, oldbackend) = do exists <- inAnnex key newbackend <- choosebackend =<< chooseBackend file - if (newbackend /= oldbackend || upgradableKey key) && exists + if (newbackend /= oldbackend || upgradableKey oldbackend key) && exists then do showStart "migrate" file next $ perform file key oldbackend newbackend @@ -35,10 +36,17 @@ start file (key, oldbackend) = do choosebackend Nothing = Prelude.head <$> orderedList choosebackend (Just backend) = return backend -{- Checks if a key is upgradable to a newer representation. -} -{- Ideally, all keys have file size metadata. Old keys may not. -} -upgradableKey :: Key -> Bool -upgradableKey key = isNothing $ Types.Key.keySize key +{- Checks if a key is upgradable to a newer representation. + - + - Reasons for migration: + - - Ideally, all keys have file size metadata. Old keys may not. + - - Something has changed in the backend, such as a bug fix. + -} +upgradableKey :: Backend -> Key -> Bool +upgradableKey backend key = isNothing (Types.Key.keySize key) || backendupgradable + where + backendupgradable = maybe False (\a -> a key) + (Types.Backend.canUpgradeKey backend) {- Store the old backend's key in the new backend - The old backend's key is not dropped from it, because there may |