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LỖI HYPER-V “FAILED TO CHANGE CURRENT STATE”


LỖI “FAILED TO CHANGE CURRENT STATE”
Hôm nay mình có thao tác mount cái disk máy ảo (VHDX) rồi copy và create file trực tiếp trong cái disk ảo đó (mounted-disk)
Dẫn đến là sau khi start lại VM thì báo lỗi “Failed to change current state”. Nguyên nhân là do việc copy & tạo file trực tiếp trong mounted-disk làm cho disk không còn đúng trạng thái ban đầu.
Image result for failed to change current state
Máy ảo này có 2 disk: disk 1 làm OS, disk 2 làm Data.Tìm hiểu kỹ hơn bằng tính nằng “Inspect disk” thì phát hiện disk 1 bị lỗi “Property ‘MaxinternalSize’ does not exist in class ‘Msvm_VirtualHardDiskSettingData’.”



Nguyên nhân như đã nói ở trên, nó làm cho các bản Checkpoint (Snapshot) mất link với Disk gốc (Parent disk)
Để khắc phục, chúng ta cần dùng lệnh Set-VHD để link Checkpoint với Parent Disk
·        Cần chạy lệnh với quyền Administrator “Run as administrator”
·        set-vhd "D:\Hyper-V-Replica\Virtual Hard Disks\XXX-disk1_66FBC729-1B9D-411E-BF3E-3F704A1343B0.avhdx"-ParentPath "D:\Hyper-V-Replica\Virtual Hard Disks\XXX-disk1_3EC8B1CA-590D-465A-870B-94E745064622.avhdx"
·        Làm tuần tự từng checkpoint, vd: Check3 -> Check2 -> Check1 -> ParentDisk
Nếu gặp lỗi “ID Mismatch” thì thêm “-IgnoreMismatch”
Sau khi link toàn bộ checkpoint thành công thì có thể start lại máy VM bình thường


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