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Persistent L2ARC might be coming to ZFS on Linux

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Linux

Enlarge / Intel's Optane persistent memory is widely considered the best choice for ZFS write buffer devices. But L2ARC is more forgiving than SLOG, and larger, slower devices like standard consumer M.2 SSDs should work well for it, too.

Today, a request for code review came across the ZFS developers' mailing list. Developer George Amanakis has ported and revised code improvement that makes the L2ARC—OpenZFS's read cache device feature—persistent across reboots. Amanakis explains...

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