d266a41f8d
Ignore annex.numcopies set to 0 in gitattributes or git config, or by git-annex numcopies or by --numcopies, since that configuration would make git-annex easily lose data. Same for mincopies. This is a continuation of the work to make data only be able to be lost when --force is used. It earlier led to the --trust option being disabled, and similar reasoning applies here. Most numcopies configs had docs that strongly discouraged setting it to 0 anyway. And I can't imagine a use case for setting to 0. Not that there might not be one, but it's just so far from the intended use case of git-annex, of managing and storing your data, that it does not seem like it makes sense to cater to such a hypothetical use case, where any git-annex drop can lose your data at any time. Using a smart constructor makes sure every place avoids 0. Note that this does mean that NumCopies is for the configured desired values, and not the actual existing number of copies, which of course can be 0. The name configuredNumCopies is used to make that clear. Sponsored-by: Brock Spratlen on Patreon
707 lines
24 KiB
Haskell
707 lines
24 KiB
Haskell
{- git-annex command
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-
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- Copyright 2010-2021 Joey Hess <id@joeyh.name>
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-
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- Licensed under the GNU AGPL version 3 or higher.
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-}
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{-# LANGUAGE CPP #-}
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{-# LANGUAGE OverloadedStrings #-}
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module Command.Fsck where
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import Command
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import qualified Annex
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import qualified Remote
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import qualified Types.Backend
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import qualified Backend
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import Annex.Content
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import Annex.Content.Presence.LowLevel
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import Annex.Perms
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import Annex.Link
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import Logs.Location
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import Logs.Trust
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import Logs.Activity
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import Utility.TimeStamp
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import Logs.PreferredContent
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import Annex.NumCopies
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import Annex.UUID
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import Annex.ReplaceFile
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import Utility.DataUnits
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import Utility.HumanTime
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import Utility.CopyFile
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import Git.FilePath
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import Utility.PID
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import Utility.InodeCache
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import Annex.InodeSentinal
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import qualified Database.Keys
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import qualified Database.Fsck as FsckDb
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import Types.CleanupActions
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import Types.Key
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import Types.ActionItem
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import qualified Utility.RawFilePath as R
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import Data.Time.Clock.POSIX
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import System.Posix.Types (EpochTime)
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import qualified Data.Set as S
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import qualified Data.Map as M
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import Data.Either
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import qualified System.FilePath.ByteString as P
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cmd :: Command
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cmd = withGlobalOptions [jobsOption, jsonOptions, annexedMatchingOptions] $
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command "fsck" SectionMaintenance
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"find and fix problems"
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paramPaths (seek <$$> optParser)
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data FsckOptions = FsckOptions
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{ fsckFiles :: CmdParams
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, fsckFromOption :: Maybe (DeferredParse Remote)
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, incrementalOpt :: Maybe IncrementalOpt
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, keyOptions :: Maybe KeyOptions
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}
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data IncrementalOpt
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= StartIncrementalO
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| MoreIncrementalO
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| ScheduleIncrementalO Duration
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optParser :: CmdParamsDesc -> Parser FsckOptions
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optParser desc = FsckOptions
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<$> cmdParams desc
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<*> optional (parseRemoteOption <$> strOption
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( long "from" <> short 'f' <> metavar paramRemote
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<> help "check remote"
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<> completeRemotes
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))
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<*> optional parseincremental
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<*> optional parseKeyOptions
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where
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parseincremental =
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flag' StartIncrementalO
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( long "incremental" <> short 'S'
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<> help "start an incremental fsck"
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)
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<|> flag' MoreIncrementalO
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( long "more" <> short 'm'
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<> help "continue an incremental fsck"
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)
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<|> (ScheduleIncrementalO <$> option (eitherReader parseDuration)
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( long "incremental-schedule" <> metavar paramTime
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<> help "schedule incremental fscking"
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))
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seek :: FsckOptions -> CommandSeek
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seek o = startConcurrency commandStages $ do
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from <- maybe (pure Nothing) (Just <$$> getParsed) (fsckFromOption o)
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u <- maybe getUUID (pure . Remote.uuid) from
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checkDeadRepo u
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i <- prepIncremental u (incrementalOpt o)
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let seeker = AnnexedFileSeeker
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{ startAction = start from i
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, checkContentPresent = Nothing
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, usesLocationLog = True
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}
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withKeyOptions (keyOptions o) False seeker
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(\kai -> commandAction . startKey from i kai =<< getNumCopies)
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(withFilesInGitAnnex ww seeker)
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=<< workTreeItems ww (fsckFiles o)
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cleanupIncremental i
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void $ tryIO $ recordActivity Fsck u
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where
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ww = WarnUnmatchLsFiles
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checkDeadRepo :: UUID -> Annex ()
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checkDeadRepo u =
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whenM ((==) DeadTrusted <$> lookupTrust u) $
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earlyWarning "Warning: Fscking a repository that is currently marked as dead."
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start :: Maybe Remote -> Incremental -> SeekInput -> RawFilePath -> Key -> CommandStart
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start from inc si file key = Backend.getBackend (fromRawFilePath file) key >>= \case
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Nothing -> stop
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Just backend -> do
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(numcopies, _mincopies) <- getFileNumMinCopies file
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case from of
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Nothing -> go $ perform key file backend numcopies
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Just r -> go $ performRemote key afile backend numcopies r
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where
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go = runFsck inc si (mkActionItem (key, afile)) key
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afile = AssociatedFile (Just file)
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perform :: Key -> RawFilePath -> Backend -> NumCopies -> Annex Bool
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perform key file backend numcopies = do
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keystatus <- getKeyFileStatus key (fromRawFilePath file)
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check
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-- order matters
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[ fixLink key file
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, verifyLocationLog key keystatus ai
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, verifyRequiredContent key ai
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, verifyAssociatedFiles key keystatus file
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, verifyWorkTree key file
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, checkKeySize key keystatus ai
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, checkBackend backend key keystatus afile
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, checkKeyUpgrade backend key ai afile
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, checkKeyNumCopies key afile numcopies
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]
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where
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afile = AssociatedFile (Just file)
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ai = mkActionItem (key, afile)
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{- To fsck a remote, the content is retrieved to a tmp file,
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- and checked locally. -}
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performRemote :: Key -> AssociatedFile -> Backend -> NumCopies -> Remote -> Annex Bool
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performRemote key afile backend numcopies remote =
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dispatch =<< Remote.hasKey remote key
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where
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dispatch (Left err) = do
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showNote err
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return False
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dispatch (Right True) = withtmp $ \tmpfile ->
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getfile tmpfile >>= \case
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Nothing -> go True Nothing
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Just (Right verification) -> go True (Just (tmpfile, verification))
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Just (Left _) -> do
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warning "failed to download file from remote"
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void $ go True Nothing
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return False
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dispatch (Right False) = go False Nothing
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go present lv = check
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[ verifyLocationLogRemote key ai remote present
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, verifyRequiredContent key ai
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, withLocalCopy (fmap fst lv) $ checkKeySizeRemote key remote ai
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, case fmap snd lv of
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Just Verified -> return True
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_ -> withLocalCopy (fmap fst lv) $
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checkBackendRemote backend key remote ai
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, checkKeyNumCopies key afile numcopies
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]
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ai = mkActionItem (key, afile)
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withtmp a = do
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-- Put it in the gitAnnexTmpObjectDir since that's on a
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-- filesystem where object temp files are normally
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-- stored. The pid prevents multiple fsck processes
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-- contending over the same file. (Multiple threads cannot,
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-- because OnlyActionOn is used.)
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pid <- liftIO getPID
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t <- fromRepo gitAnnexTmpObjectDir
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createAnnexDirectory t
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let tmp = t P.</> "fsck" <> toRawFilePath (show pid) <> "." <> keyFile key
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let cleanup = liftIO $ catchIO (R.removeLink tmp) (const noop)
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cleanup
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cleanup `after` a tmp
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getfile tmp = ifM (checkDiskSpace (Just (P.takeDirectory tmp)) key 0 True)
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( ifM (getcheap tmp)
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( return (Just (Right UnVerified))
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, ifM (Annex.getState Annex.fast)
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( return Nothing
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, Just <$> tryNonAsync (getfile' tmp)
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)
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)
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, return Nothing
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)
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getfile' tmp = Remote.retrieveKeyFile remote key (AssociatedFile Nothing) (fromRawFilePath tmp) dummymeter (RemoteVerify remote)
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dummymeter _ = noop
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getcheap tmp = case Remote.retrieveKeyFileCheap remote of
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Just a -> isRight <$> tryNonAsync (a key afile (fromRawFilePath tmp))
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Nothing -> return False
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startKey :: Maybe Remote -> Incremental -> (SeekInput, Key, ActionItem) -> NumCopies -> CommandStart
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startKey from inc (si, key, ai) numcopies =
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Backend.maybeLookupBackendVariety (fromKey keyVariety key) >>= \case
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Nothing -> stop
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Just backend -> runFsck inc si ai key $
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case from of
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Nothing -> performKey key backend numcopies
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Just r -> performRemote key (AssociatedFile Nothing) backend numcopies r
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performKey :: Key -> Backend -> NumCopies -> Annex Bool
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performKey key backend numcopies = do
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keystatus <- getKeyStatus key
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check
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[ verifyLocationLog key keystatus (mkActionItem key)
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, checkKeySize key keystatus (mkActionItem key)
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, checkBackend backend key keystatus (AssociatedFile Nothing)
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, checkKeyNumCopies key (AssociatedFile Nothing) numcopies
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]
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check :: [Annex Bool] -> Annex Bool
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check cs = and <$> sequence cs
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{- Checks that symlinks points correctly to the annexed content. -}
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fixLink :: Key -> RawFilePath -> Annex Bool
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fixLink key file = do
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want <- calcRepo $ gitAnnexLink file key
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have <- getAnnexLinkTarget file
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maybe noop (go want) have
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return True
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where
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go want have
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| want /= fromInternalGitPath have = do
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showNote "fixing link"
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createWorkTreeDirectory (parentDir file)
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liftIO $ R.removeLink file
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addAnnexLink want file
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| otherwise = noop
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{- Checks that the location log reflects the current status of the key,
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- in this repository only. -}
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verifyLocationLog :: Key -> KeyStatus -> ActionItem -> Annex Bool
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verifyLocationLog key keystatus ai = do
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obj <- calcRepo (gitAnnexLocation key)
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present <- if isKeyUnlockedThin keystatus
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then liftIO (doesFileExist (fromRawFilePath obj))
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else inAnnex key
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u <- getUUID
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{- Since we're checking that a key's object file is present, throw
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- in a permission fixup here too. -}
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when present $ do
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void $ tryIO $ case keystatus of
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KeyUnlockedThin -> thawContent obj
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KeyLockedThin -> thawContent obj
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_ -> freezeContent obj
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checkContentWritePerm obj >>= \case
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Nothing -> warning $ "** Unable to set correct write mode for " ++ fromRawFilePath obj ++ " ; perhaps you don't own that file, or perhaps it has an xattr or ACL set"
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_ -> return ()
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whenM (liftIO $ R.doesPathExist $ parentDir obj) $
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freezeContentDir obj
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{- Warn when annex.securehashesonly is set and content using an
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- insecure hash is present. This should only be able to happen
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- if the repository already contained the content before the
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- config was set. -}
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whenM (pure present <&&> (not <$> Backend.isCryptographicallySecure key)) $
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whenM (annexSecureHashesOnly <$> Annex.getGitConfig) $
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warning $ "** Despite annex.securehashesonly being set, " ++ fromRawFilePath obj ++ " has content present in the annex using an insecure " ++ decodeBS (formatKeyVariety (fromKey keyVariety key)) ++ " key"
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verifyLocationLog' key ai present u (logChange key u)
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verifyLocationLogRemote :: Key -> ActionItem -> Remote -> Bool -> Annex Bool
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verifyLocationLogRemote key ai remote present =
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verifyLocationLog' key ai present (Remote.uuid remote)
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(Remote.logStatus remote key)
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verifyLocationLog' :: Key -> ActionItem -> Bool -> UUID -> (LogStatus -> Annex ()) -> Annex Bool
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verifyLocationLog' key ai present u updatestatus = do
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uuids <- loggedLocations key
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case (present, u `elem` uuids) of
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(True, False) -> do
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fix InfoPresent
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-- There is no data loss, so do not fail.
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return True
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(False, True) -> do
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fix InfoMissing
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warning $
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"** Based on the location log, " ++
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decodeBS (actionItemDesc ai) ++
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"\n** was expected to be present, " ++
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"but its content is missing."
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return False
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(False, False) -> do
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-- When the location log for the key is not present,
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-- create it, so that the key will be known.
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when (null uuids) $
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whenM (not <$> isKnownKey key) $
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updatestatus InfoMissing
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return True
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(True, True) -> return True
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where
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fix s = do
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showNote "fixing location log"
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updatestatus s
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{- Verifies that all repos that are required to contain the content do,
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- checking against the location log. -}
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verifyRequiredContent :: Key -> ActionItem -> Annex Bool
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verifyRequiredContent key ai@(ActionItemAssociatedFile afile _) = case afile of
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-- Can't be checked if there's no associated file.
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AssociatedFile Nothing -> return True
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AssociatedFile (Just _) -> do
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requiredlocs <- S.fromList . M.keys <$> requiredContentMap
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if S.null requiredlocs
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then return True
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else go requiredlocs
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where
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go requiredlocs = do
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presentlocs <- S.fromList <$> loggedLocations key
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missinglocs <- filterM
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(\u -> isRequiredContent (Just u) S.empty (Just key) afile False)
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(S.toList $ S.difference requiredlocs presentlocs)
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if null missinglocs
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then return True
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else do
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missingrequired <- Remote.prettyPrintUUIDs "missingrequired" missinglocs
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warning $
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"** Required content " ++
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decodeBS (actionItemDesc ai) ++
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" is missing from these repositories:\n" ++
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missingrequired
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return False
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verifyRequiredContent _ _ = return True
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{- Verifies the associated file records. -}
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verifyAssociatedFiles :: Key -> KeyStatus -> RawFilePath -> Annex Bool
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verifyAssociatedFiles key keystatus file = do
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when (isKeyUnlockedThin keystatus) $ do
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f <- inRepo $ toTopFilePath file
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afs <- Database.Keys.getAssociatedFiles key
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unless (getTopFilePath f `elem` map getTopFilePath afs) $
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Database.Keys.addAssociatedFile key f
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return True
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verifyWorkTree :: Key -> RawFilePath -> Annex Bool
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verifyWorkTree key file = do
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{- Make sure that a pointer file is replaced with its content,
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- when the content is available. -}
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mk <- liftIO $ isPointerFile file
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case mk of
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Just k | k == key -> whenM (inAnnex key) $ do
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showNote "fixing worktree content"
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replaceWorkTreeFile (fromRawFilePath file) $ \tmp -> do
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let tmp' = toRawFilePath tmp
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mode <- liftIO $ catchMaybeIO $ fileMode <$> R.getFileStatus file
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ifM (annexThin <$> Annex.getGitConfig)
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( void $ linkFromAnnex' key tmp' mode
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, do
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obj <- calcRepo (gitAnnexLocation key)
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void $ checkedCopyFile key obj tmp' mode
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thawContent tmp'
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)
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Database.Keys.storeInodeCaches key [tmp']
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_ -> return ()
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return True
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{- The size of the data for a key is checked against the size encoded in
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- the key's metadata, if available.
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-
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- Not checked when a file is unlocked.
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-}
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checkKeySize :: Key -> KeyStatus -> ActionItem -> Annex Bool
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checkKeySize _ KeyUnlockedThin _ = return True
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checkKeySize key _ ai = do
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file <- calcRepo $ gitAnnexLocation key
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ifM (liftIO $ R.doesPathExist file)
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( checkKeySizeOr badContent key file ai
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, return True
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)
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withLocalCopy :: Maybe RawFilePath -> (RawFilePath -> Annex Bool) -> Annex Bool
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withLocalCopy Nothing _ = return True
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withLocalCopy (Just localcopy) f = f localcopy
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checkKeySizeRemote :: Key -> Remote -> ActionItem -> RawFilePath -> Annex Bool
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checkKeySizeRemote key remote ai localcopy =
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checkKeySizeOr (badContentRemote remote localcopy) key localcopy ai
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checkKeySizeOr :: (Key -> Annex String) -> Key -> RawFilePath -> ActionItem -> Annex Bool
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checkKeySizeOr bad key file ai = case fromKey keySize key of
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Nothing -> return True
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Just size -> do
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size' <- liftIO $ getFileSize file
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comparesizes size size'
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where
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comparesizes a b = do
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let same = a == b
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unless same $ badsize a b
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return same
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badsize a b = do
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msg <- bad key
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warning $ concat
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[ decodeBS (actionItemDesc ai)
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, ": Bad file size ("
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, compareSizes storageUnits True a b
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, "); "
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, msg
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]
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{- Check for keys that are upgradable.
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-
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- Warns and suggests the user migrate, but does not migrate itself,
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- because migration can cause more disk space to be used, and makes
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- worktree changes that need to be committed.
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-}
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checkKeyUpgrade :: Backend -> Key -> ActionItem -> AssociatedFile -> Annex Bool
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checkKeyUpgrade backend key ai (AssociatedFile (Just file)) =
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case Types.Backend.canUpgradeKey backend of
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Just a | a key -> do
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warning $ concat
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[ decodeBS (actionItemDesc ai)
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, ": Can be upgraded to an improved key format. "
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, "You can do so by running: git annex migrate --backend="
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, decodeBS (formatKeyVariety (fromKey keyVariety key)) ++ " "
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, decodeBS file
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]
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return True
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_ -> return True
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checkKeyUpgrade _ _ _ (AssociatedFile Nothing) =
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-- Don't suggest migrating without a filename, because
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-- while possible to do, there is no actual benefit from
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-- doing that in this situation.
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return True
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{- Runs the backend specific check on a key's content object.
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-
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- When a annex.this is set, an unlocked file may be a hard link to the object.
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- Thus when the user modifies the file, the object will be modified and
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- not pass the check, and we don't want to find an error in this case.
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-}
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checkBackend :: Backend -> Key -> KeyStatus -> AssociatedFile -> Annex Bool
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checkBackend backend key keystatus afile = do
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content <- calcRepo (gitAnnexLocation key)
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ifM (pure (isKeyUnlockedThin keystatus) <&&> (not <$> isUnmodified key content))
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( nocheck
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, do
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mic <- withTSDelta (liftIO . genInodeCache content)
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ifM (checkBackendOr badContent backend key content ai)
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( do
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checkInodeCache key content mic ai
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return True
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, return False
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)
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)
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where
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nocheck = return True
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ai = mkActionItem (key, afile)
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checkBackendRemote :: Backend -> Key -> Remote -> ActionItem -> RawFilePath -> Annex Bool
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checkBackendRemote backend key remote ai localcopy =
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checkBackendOr (badContentRemote remote localcopy) backend key localcopy ai
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checkBackendOr :: (Key -> Annex String) -> Backend -> Key -> RawFilePath -> ActionItem -> Annex Bool
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checkBackendOr bad backend key file ai =
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case Types.Backend.verifyKeyContent backend of
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Just verifier -> do
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ok <- verifier key file
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unless ok $ do
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msg <- bad key
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warning $ concat
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[ decodeBS (actionItemDesc ai)
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, ": Bad file content; "
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, msg
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]
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return ok
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Nothing -> return True
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{- Check, if there are InodeCaches recorded for a key, that one of them
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- matches the object file. There are situations where the InodeCache
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- of the object file does not get recorded, including a v8 upgrade.
|
|
- There may also be situations where the wrong InodeCache is recorded,
|
|
- if inodes are not stable.
|
|
-
|
|
- This must be called after the content of the object file has been
|
|
- verified to be correct. The InodeCache is generated again to detect if
|
|
- the object file was changed while the content was being verified.
|
|
-}
|
|
checkInodeCache :: Key -> RawFilePath -> Maybe InodeCache -> ActionItem -> Annex ()
|
|
checkInodeCache key content mic ai = case mic of
|
|
Nothing -> noop
|
|
Just ic -> do
|
|
ics <- Database.Keys.getInodeCaches key
|
|
unless (null ics) $
|
|
unlessM (isUnmodifiedCheapLowLevel ic ics) $ do
|
|
withTSDelta (liftIO . genInodeCache content) >>= \case
|
|
Nothing -> noop
|
|
Just ic' -> whenM (compareInodeCaches ic ic') $ do
|
|
warning $ concat
|
|
[ decodeBS (actionItemDesc ai)
|
|
, ": Stale or missing inode cache; updating."
|
|
]
|
|
Database.Keys.addInodeCaches key [ic]
|
|
|
|
checkKeyNumCopies :: Key -> AssociatedFile -> NumCopies -> Annex Bool
|
|
checkKeyNumCopies key afile numcopies = do
|
|
let (desc, hasafile) = case afile of
|
|
AssociatedFile Nothing -> (serializeKey key, False)
|
|
AssociatedFile (Just af) -> (fromRawFilePath af, True)
|
|
locs <- loggedLocations key
|
|
(untrustedlocations, otherlocations) <- trustPartition UnTrusted locs
|
|
(deadlocations, safelocations) <- trustPartition DeadTrusted otherlocations
|
|
let present = length safelocations
|
|
if present < fromNumCopies numcopies
|
|
then ifM (pure (not hasafile) <&&> checkDead key)
|
|
( do
|
|
showLongNote $ "This key is dead, skipping."
|
|
return True
|
|
, do
|
|
untrusted <- Remote.prettyPrintUUIDs "untrusted" untrustedlocations
|
|
dead <- Remote.prettyPrintUUIDs "dead" deadlocations
|
|
warning $ missingNote desc present numcopies untrusted dead
|
|
when (present == 0 && not hasafile) $
|
|
showLongNote "(Avoid this check by running: git annex dead --key )"
|
|
return False
|
|
)
|
|
else return True
|
|
|
|
missingNote :: String -> Int -> NumCopies -> String -> String -> String
|
|
missingNote file 0 _ [] dead =
|
|
"** No known copies exist of " ++ file ++ honorDead dead
|
|
missingNote file 0 _ untrusted dead =
|
|
"Only these untrusted locations may have copies of " ++ file ++
|
|
"\n" ++ untrusted ++
|
|
"Back it up to trusted locations with git-annex copy." ++ honorDead dead
|
|
missingNote file present needed [] _ =
|
|
"Only " ++ show present ++ " of " ++ show (fromNumCopies needed) ++
|
|
" trustworthy copies exist of " ++ file ++
|
|
"\nBack it up with git-annex copy."
|
|
missingNote file present needed untrusted dead =
|
|
missingNote file present needed [] dead ++
|
|
"\nThe following untrusted locations may also have copies: " ++
|
|
"\n" ++ untrusted
|
|
|
|
honorDead :: String -> String
|
|
honorDead dead
|
|
| null dead = ""
|
|
| otherwise = "\nThese dead repositories used to have copies\n" ++ dead
|
|
|
|
{- Bad content is moved aside. -}
|
|
badContent :: Key -> Annex String
|
|
badContent key = do
|
|
dest <- moveBad key
|
|
return $ "moved to " ++ dest
|
|
|
|
{- Bad content is dropped from the remote. We have downloaded a copy
|
|
- from the remote to a temp file already (in some cases, it's just a
|
|
- symlink to a file in the remote). To avoid any further data loss,
|
|
- that temp file is moved to the bad content directory unless
|
|
- the local annex has a copy of the content. -}
|
|
badContentRemote :: Remote -> RawFilePath -> Key -> Annex String
|
|
badContentRemote remote localcopy key = do
|
|
bad <- fromRepo gitAnnexBadDir
|
|
let destbad = bad P.</> keyFile key
|
|
let destbad' = fromRawFilePath destbad
|
|
movedbad <- ifM (inAnnex key <||> liftIO (doesFileExist destbad'))
|
|
( return False
|
|
, do
|
|
createAnnexDirectory (parentDir destbad)
|
|
liftIO $ catchDefaultIO False $
|
|
ifM (isSymbolicLink <$> R.getSymbolicLinkStatus localcopy)
|
|
( copyFileExternal CopyTimeStamps (fromRawFilePath localcopy) destbad'
|
|
, do
|
|
moveFile (fromRawFilePath localcopy) destbad'
|
|
return True
|
|
)
|
|
)
|
|
|
|
dropped <- tryNonAsync (Remote.removeKey remote key)
|
|
when (isRight dropped) $
|
|
Remote.logStatus remote key InfoMissing
|
|
return $ case (movedbad, dropped) of
|
|
(True, Right ()) -> "moved from " ++ Remote.name remote ++
|
|
" to " ++ fromRawFilePath destbad
|
|
(False, Right ()) -> "dropped from " ++ Remote.name remote
|
|
(_, Left e) -> "failed to drop from" ++ Remote.name remote ++ ": " ++ show e
|
|
|
|
runFsck :: Incremental -> SeekInput -> ActionItem -> Key -> Annex Bool -> CommandStart
|
|
runFsck inc si ai key a = stopUnless (needFsck inc key) $
|
|
starting "fsck" (OnlyActionOn key ai) si $ do
|
|
ok <- a
|
|
when ok $
|
|
recordFsckTime inc key
|
|
next $ return ok
|
|
|
|
{- Check if a key needs to be fscked, with support for incremental fscks. -}
|
|
needFsck :: Incremental -> Key -> Annex Bool
|
|
needFsck (ScheduleIncremental _ _ i) k = needFsck i k
|
|
needFsck (ContIncremental h) key = liftIO $ not <$> FsckDb.inDb h key
|
|
needFsck _ _ = return True
|
|
|
|
recordFsckTime :: Incremental -> Key -> Annex ()
|
|
recordFsckTime inc key = withFsckDb inc $ \h -> liftIO $ FsckDb.addDb h key
|
|
|
|
{- Records the start time of an incremental fsck.
|
|
-
|
|
- To guard against time stamp damange (for example, if an annex directory
|
|
- is copied without -a), the fsckstate file contains a time that should
|
|
- be identical to its modification time.
|
|
- (This is not possible to do on Windows, and so the timestamp in
|
|
- the file will only be equal or greater than the modification time.)
|
|
-}
|
|
recordStartTime :: UUID -> Annex ()
|
|
recordStartTime u = do
|
|
f <- fromRepo (gitAnnexFsckState u)
|
|
createAnnexDirectory $ parentDir f
|
|
liftIO $ removeWhenExistsWith R.removeLink f
|
|
liftIO $ withFile (fromRawFilePath f) WriteMode $ \h -> do
|
|
#ifndef mingw32_HOST_OS
|
|
t <- modificationTime <$> R.getFileStatus f
|
|
#else
|
|
t <- getPOSIXTime
|
|
#endif
|
|
hPutStr h $ showTime $ realToFrac t
|
|
setAnnexFilePerm f
|
|
where
|
|
showTime :: POSIXTime -> String
|
|
showTime = show
|
|
|
|
resetStartTime :: UUID -> Annex ()
|
|
resetStartTime u = liftIO . removeWhenExistsWith R.removeLink
|
|
=<< fromRepo (gitAnnexFsckState u)
|
|
|
|
{- Gets the incremental fsck start time. -}
|
|
getStartTime :: UUID -> Annex (Maybe EpochTime)
|
|
getStartTime u = do
|
|
f <- fromRepo (gitAnnexFsckState u)
|
|
liftIO $ catchDefaultIO Nothing $ do
|
|
timestamp <- modificationTime <$> R.getFileStatus f
|
|
let fromstatus = Just (realToFrac timestamp)
|
|
fromfile <- parsePOSIXTime <$> readFile (fromRawFilePath f)
|
|
return $ if matchingtimestamp fromfile fromstatus
|
|
then Just timestamp
|
|
else Nothing
|
|
where
|
|
matchingtimestamp fromfile fromstatus =
|
|
#ifndef mingw32_HOST_OS
|
|
fromfile == fromstatus
|
|
#else
|
|
fromfile >= fromstatus
|
|
#endif
|
|
|
|
data Incremental
|
|
= NonIncremental
|
|
| ScheduleIncremental Duration UUID Incremental
|
|
| StartIncremental FsckDb.FsckHandle
|
|
| ContIncremental FsckDb.FsckHandle
|
|
|
|
prepIncremental :: UUID -> Maybe IncrementalOpt -> Annex Incremental
|
|
prepIncremental _ Nothing = pure NonIncremental
|
|
prepIncremental u (Just StartIncrementalO) = do
|
|
recordStartTime u
|
|
ifM (FsckDb.newPass u)
|
|
( StartIncremental <$> openFsckDb u
|
|
, giveup "Cannot start a new --incremental fsck pass; another fsck process is already running."
|
|
)
|
|
prepIncremental u (Just MoreIncrementalO) =
|
|
ContIncremental <$> openFsckDb u
|
|
prepIncremental u (Just (ScheduleIncrementalO delta)) = do
|
|
started <- getStartTime u
|
|
i <- prepIncremental u $ Just $ case started of
|
|
Nothing -> StartIncrementalO
|
|
Just _ -> MoreIncrementalO
|
|
return (ScheduleIncremental delta u i)
|
|
|
|
cleanupIncremental :: Incremental -> Annex ()
|
|
cleanupIncremental (ScheduleIncremental delta u i) = do
|
|
v <- getStartTime u
|
|
case v of
|
|
Nothing -> noop
|
|
Just started -> do
|
|
now <- liftIO getPOSIXTime
|
|
when (now - realToFrac started >= durationToPOSIXTime delta) $
|
|
resetStartTime u
|
|
cleanupIncremental i
|
|
cleanupIncremental _ = return ()
|
|
|
|
openFsckDb :: UUID -> Annex FsckDb.FsckHandle
|
|
openFsckDb u = do
|
|
h <- FsckDb.openDb u
|
|
Annex.addCleanupAction FsckCleanup $
|
|
FsckDb.closeDb h
|
|
return h
|
|
|
|
withFsckDb :: Incremental -> (FsckDb.FsckHandle -> Annex ()) -> Annex ()
|
|
withFsckDb (ContIncremental h) a = a h
|
|
withFsckDb (StartIncremental h) a = a h
|
|
withFsckDb NonIncremental _ = noop
|
|
withFsckDb (ScheduleIncremental _ _ i) a = withFsckDb i a
|
|
|