diff options
| author | George Amanakis <[email protected]> | 2020-04-10 13:33:35 -0400 |
|---|---|---|
| committer | GitHub <[email protected]> | 2020-04-10 10:33:35 -0700 |
| commit | 77f6826b83b7e27f0996f6d192202c36f65e41fd (patch) | |
| tree | b9946c99348bf6742cc41739aeff1a2b952d9d2f /include/sys/fs | |
| parent | 36a6e2335c45212f2609269bcee3004908ac6bcb (diff) | |
Persistent L2ARC
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
Diffstat (limited to 'include/sys/fs')
| -rw-r--r-- | include/sys/fs/zfs.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/sys/fs/zfs.h b/include/sys/fs/zfs.h index 477356aa7..f5aced0da 100644 --- a/include/sys/fs/zfs.h +++ b/include/sys/fs/zfs.h @@ -573,6 +573,11 @@ typedef enum zfs_key_location { #define ZPL_VERSION_USERSPACE ZPL_VERSION_4 #define ZPL_VERSION_SA ZPL_VERSION_5 +/* Persistent L2ARC version */ +#define L2ARC_PERSISTENT_VERSION_1 1ULL +#define L2ARC_PERSISTENT_VERSION L2ARC_PERSISTENT_VERSION_1 +#define L2ARC_PERSISTENT_VERSION_STRING "1" + /* Rewind policy information */ #define ZPOOL_NO_REWIND 1 /* No policy - default behavior */ #define ZPOOL_NEVER_REWIND 2 /* Do not search for best txg or rewind */ |