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This commit makes the L2ARC persistent across reboots. We implement
a light-weight persistent L2ARC metadata structure that allows L2ARC
contents to be recovered after a reboot. This significantly eases the
impact a reboot has on read performance on systems with large caches.
Reviewed-by: Matthew Ahrens <[email protected]>
Reviewed-by: George Wilson <[email protected]>
Reviewed-by: Ryan Moeller <[email protected]>
Reviewed-by: Brian Behlendorf <[email protected]>
Co-authored-by: Saso Kiselkov <[email protected]>
Co-authored-by: Jorgen Lundman <[email protected]>
Co-authored-by: George Amanakis <[email protected]>
Ported-by: Yuxuan Shui <[email protected]>
Signed-off-by: George Amanakis <[email protected]>
Closes #925
Closes #1823
Closes #2672
Closes #3744
Closes #9582
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