Add error message for preallocate failure on linux instead of a crash.

PoC-Consortium / engraver

PoCC Burstcoin Reference Plotter

MIT License

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Add error message for preallocate failure on linux instead of a crash. #55

Closed silverscania closed 5 years ago

silverscania commented 5 years ago

The cause of my preallocate failure on linux was because I was using an ext2 filesystem. It has lower storage overhead, but preallocation support wasn't added to ext2 or ext3.