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Storage: Can end up with duplicate files #1801

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gfwilliams opened this issue Apr 16, 2020 · 1 comment
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Storage: Can end up with duplicate files #1801

gfwilliams opened this issue Apr 16, 2020 · 1 comment
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@gfwilliams
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On page size: 4k

s=require("Storage");
s.eraseAll();
s.write("a",new Uint8Array(4000));
s.write("b",new Uint8Array(100));
s.write("b",new Uint8Array(10));
s.list()

Noticed at:

http://forum.espruino.com/conversations/344259/?offset=25#15211494
http://forum.espruino.com/conversations/345948
@gfwilliams
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So what actually happens is the flash memory is paged. Espruino tries to write stuff so it's not straddling page boundaries if it thinks it can. If you write something big and then something small (or the flash area changes) it can find a free area to write into before it finds the old file to erase.

@nebbishhacker nebbishhacker mentioned this issue May 12, 2020
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@gfwilliams