Remove GVFS.GVFlt and ESENT legacy disk layout upgrades#1939
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Remove the GVFlt compatibility shim project (legacy ProjFS predecessor) and all DiskLayout upgrade paths that depend on ManagedEsent (layouts 7→8, 8→9, 9→10, 10→11, 11→12, 12→12.1, 12→13, 13→14). These upgrades are 6+ years old and no longer needed. Raise minimum supported disk layout version from 7 to 14. The 14→15 upgrade (ModifiedPaths) is retained so v14 repos can still upgrade. Users on layouts below 14 must upgrade through an intermediate GVFS version first. Removes ManagedEsent, Microsoft.Database.Collections.Generic, and Microsoft.Database.Isam NuGet packages entirely. Assisted-by: Claude Opus 4.6 Signed-off-by: Tyrie Vella <tyrielv@gmail.com>
KeithIsSleeping
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Apr 10, 2026
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Remove GVFS.GVFlt and ESENT legacy disk layout upgrades
Summary
Remove the GVFlt compatibility shim project (legacy ProjFS predecessor) and all DiskLayout upgrade paths that depend on ManagedEsent (layouts 7→8, 8→9, 9→10, 13→14). These upgrades are 6+ years old and no longer needed.
Raises minimum supported disk layout version from 7 to 15. Users on ancient layouts must upgrade through an intermediate GVFS version first.
Removes ManagedEsent, Microsoft.Database.Collections.Generic, and Microsoft.Database.Isam NuGet packages entirely — eliminates a .NET Framework-only dependency that has no .NET 5+ target and would block the TFM retarget.
What was removed
Review guide
WindowsDiskLayoutUpgradeData.cs— key file: verify minimum version raised to 15, ESENT code path removed, 4 upgrade registrations removedGVFSHelpers.cs— functional test minimum version matches (15)GVFS.Platform.Windows.csproj— GVFlt project ref + 3 ESENT packages removedPayload.csproj/FastFetch.csproj— GVFS.GVFlt.dll removed from signing listsVerification
Context
Phase 2C+2E of .NET 10 NativeAOT migration. Stacked on #1937 (central packages).