Migration can fail to copy files from old location

Describe the bug: Osu crashed during song select and produced this stacktrace below

Some background, I had migrated a near empty osu lazer install into a new location (lets call it external1). Then loaded a few thousand songs. Some time later I started osu lazer again and it seemed to have no songs so i loaded a 1000 of the same set of songs again. After playing for an hour I remembered that I had migrated the directory before so I migrated osu again to external1. Then when I was selecting a song after the migration finished it crashed. I dont know if this is related to the crash but thats the history.

Screenshots or videos showing encountered issue:

Unhandled exception. System.IO.DirectoryNotFoundException: Could not find a part of the path '/home/kk/external-data/geimu/osu_lazer/osu-lazer/cache/fonts'.
   at System.IO.Enumeration.FileSystemEnumerator`1.CreateDirectoryHandle(String path, Boolean ignoreNotFound)
   at System.IO.Enumeration.FileSystemEnumerator`1.Init()
   at System.IO.Enumeration.FileSystemEnumerable`1..ctor(String directory, FindTransform transform, EnumerationOptions options, Boolean isNormalized)
   at System.IO.Enumeration.FileSystemEnumerableFactory.UserFiles(String directory, String expression, EnumerationOptions options)
   at System.IO.Directory.InternalEnumeratePaths(String path, String searchPattern, SearchTarget searchTarget, EnumerationOptions options)
   at osu.Framework.Platform.NativeStorage.GetFiles(String path, String pattern)
   at osu.Game.IO.WrappedStorage.GetFiles(String path, String pattern) in /var/lib/buildkite-agent/builds/debian-gnu-linux-vm-2/ppy/osu/osu.Game/IO/WrappedStorage.cs:line 62
   at osu.Game.IO.WrappedStorage.GetFiles(String path, String pattern) in /var/lib/buildkite-agent/builds/debian-gnu-linux-vm-2/ppy/osu/osu.Game/IO/WrappedStorage.cs:line 62
   at osu.Framework.IO.Stores.RawCachingGlyphStore.createCachedPageInfo(Int32 page)
   at osu.Framework.IO.Stores.RawCachingGlyphStore.LoadCharacter(Character character)
   at osu.Framework.IO.Stores.GlyphStore.Get(String name)
   at osu.Framework.IO.Stores.ResourceStore`1.Get(String name)
   at osu.Framework.Graphics.Textures.TextureStore.Get(String name, WrapMode wrapModeS, WrapMode wrapModeT)
   at osu.Framework.IO.Stores.FontStore.Get(String name)
   at osu.Framework.IO.Stores.FontStore.Get(String fontName, Char character)
   at osu.Framework.Graphics.Sprites.SpriteText.load(ShaderManager shaders)
--- End of stack trace from previous location where exception was thrown ---
   at osu.Framework.Allocation.BackgroundDependencyLoaderAttribute.<>c__DisplayClass6_0.<CreateActivator>b__4(Object target, IReadOnlyDependencyContainer dc)
   at osu.Framework.Allocation.DependencyActivator.activate(Object obj, IReadOnlyDependencyContainer dependencies)
   at osu.Framework.Allocation.DependencyActivator.activate(Object obj, IReadOnlyDependencyContainer dependencies)
   at osu.Framework.Graphics.Drawable.load(IFrameBasedClock clock, IReadOnlyDependencyContainer dependencies)
   at osu.Framework.Graphics.Drawable.Load(IFrameBasedClock clock, IReadOnlyDependencyContainer dependencies, Boolean isDirectAsyncContext)
   at osu.Framework.Graphics.Containers.CompositeDrawable.loadChild(Drawable child)
   at osu.Framework.Graphics.Containers.CompositeDrawable.load(ShaderManager shaders, Nullable`1 cancellation)
--- End of stack trace from previous location where exception was thrown ---
   at osu.Framework.Allocation.BackgroundDependencyLoaderAttribute.<>c__DisplayClass6_0.<CreateActivator>b__4(Object target, IReadOnlyDependencyContainer dc)
   at osu.Framework.Allocation.DependencyActivator.activate(Object obj, IReadOnlyDependencyContainer dependencies)
   at osu.Framework.Allocation.DependencyActivator.activate(Object obj, IReadOnlyDependencyContainer dependencies)
   at osu.Framework.Allocation.DependencyActivator.activate(Object obj, IReadOnlyDependencyContainer dependencies)
   at osu.Framework.Allocation.DependencyActivator.activate(Object obj, IReadOnlyDependencyContainer dependencies)
   at osu.Framework.Allocation.DependencyActivator.activate(Object obj, IReadOnlyDependencyContainer dependencies)
   at osu.Framework.Allocation.DependencyActivator.activate(Object obj, IReadOnlyDependencyContainer dependencies)
   at osu.Framework.Allocation.DependencyActivator.activate(Object obj, IReadOnlyDependencyContainer dependencies)
   at osu.Framework.Graphics.Drawable.load(IFrameBasedClock clock, IReadOnlyDependencyContainer dependencies)
   at osu.Framework.Graphics.Drawable.Load(IFrameBasedClock clock, IReadOnlyDependencyContainer dependencies, Boolean isDirectAsyncContext)
   at osu.Framework.Graphics.Drawable.LoadFromAsync(IFrameBasedClock clock, IReadOnlyDependencyContainer dependencies, Boolean isDirectAsyncContext)
   at osu.Framework.Graphics.Containers.CompositeDrawable.loadComponents[TLoadable](IEnumerable`1& components, IReadOnlyDependencyContainer dependencies, Boolean isDirectAsyncContext, CancellationToken cancellation)
   at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state)
--- End of stack trace from previous location where exception was thrown ---
   at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread)
--- End of stack trace from previous location where exception was thrown ---
   at osu.Framework.Graphics.Containers.CompositeDrawable.<>c__DisplayClass17_2`1.<LoadComponentsAsync>b__4()
   at osu.Framework.Threading.ScheduledDelegate.RunTaskInternal()
   at osu.Framework.Threading.Scheduler.Update()
   at osu.Framework.Graphics.Drawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Graphics.Containers.CompositeDrawable.UpdateSubTree()
   at osu.Framework.Platform.GameHost.UpdateFrame()
   at osu.Framework.Threading.GameThread.ProcessFrame()
--- End of stack trace from previous location where exception was thrown ---
   at osu.Framework.Platform.GameHost.<>c__DisplayClass96_0.<handleException>b__0()
   at osu.Framework.Threading.ScheduledDelegate.RunTaskInternal()
   at osu.Framework.Threading.Scheduler.Update()
   at osu.Framework.Threading.GameThread.ProcessFrame()
   at osu.Framework.Platform.ThreadRunner.RunMainLoop()
   at osu.Framework.Platform.GameHost.windowUpdate()
   at osuTK.GameWindow.RaiseUpdateFrame(Stopwatch watch, Double elapsed, Double& timestamp)
   at osuTK.GameWindow.DispatchUpdateFrame(Stopwatch watch)
   at osuTK.GameWindow.Run(Double updates_per_second, Double frames_per_second)
   at osuTK.GameWindow.Run()
   at osu.Framework.Platform.GameWindow.Run()
   at osu.Framework.Platform.GameHost.Run(Game game)
   at osu.Desktop.Program.Main(String[] args) in /var/lib/buildkite-agent/builds/debian-gnu-linux-vm-2/ppy/osu/osu.Desktop/Program.cs:line 55

osu!lazer version: 2020.725.0 linux appimage

Logs:

[bdach]

The migration process is somewhat best-effort. EF/sqlite will sometimes play up when trying to migrate. We’re not likely to do much work in this regard as the current database setup is somewhat temporary/will possibly be replaced at some point.

[Jordan-Jay]

On a brief look into this issue this seems to be working perfectly fine on the latest version of Lazer with importing files from my personal wine osu-stable to Lazer. I think i can guess what is causing this error. This seems like an issue where Linux can’t access the media as it’s being used by Windows (Since Windows is in Hibernation). This will be a common issue i suspect since a lot of Linux users keep their windows drives around for transferring data to Linux. I’ll look into this myself at a later date.