Resuming and restarting scans in Klennet ZFS Recovery

Klennet ZFS Recovery will save intermediate result of the analysis as soon as pool layout is determined. This way, you can reuse previous analysis data instead of rescanning the entire disk set again if power fails or if you need to reboot for whatever reason.

ZFS Recovery analysis is in five stages

  1. Disk scan, two passes,
  2. disk order analysis,
  3. object set analysis,
  4. checksum verification.

The save file is automatically generated between disk order analysis and object set analysis, and stored into the same directory where ZFS Recovery is installed (in Program Files\Klennet\ZFS Recovery). The save file is named autosave.dat, and only one is stored. A new save file overwrites the previous one.

Using the save file

  1. Select exactly the same disks you used for the analysis.
    • Disk order does not matter. The save file contains enough data to figure out which disk is which. If your system shuffled disks on reboot, don't worry about it.
    • You can exchange physical disk for its disk image file and vice versa.
    • You can exchange physical disk for its clone, provided that the clone is the same size as the original.
  2. Click "Resume autosave".

Load may take a long time, especially when pool holds large number of files but only uses two or three physical disks. Load times of about an hour are not unheard of.

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