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Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/admin-guide/xfs.rst | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/Documentation/admin-guide/xfs.rst b/Documentation/admin-guide/xfs.rst index b67772cf36d6..7b0811d650f9 100644 --- a/Documentation/admin-guide/xfs.rst +++ b/Documentation/admin-guide/xfs.rst @@ -542,3 +542,24 @@ The interesting knobs for XFS workqueues are as follows: nice Relative priority of scheduling the threads. These are the same nice levels that can be applied to userspace processes. ============ =========== + +Zoned Filesystems +================= + +For zoned file systems, the following attributes are exposed in: + + /sys/fs/xfs/<dev>/zoned/ + + max_open_zones (Min: 1 Default: Varies Max: UINTMAX) + This read-only attribute exposes the maximum number of open zones + available for data placement. The value is determined at mount time and + is limited by the capabilities of the backing zoned device, file system + size and the max_open_zones mount option. + + zonegc_low_space (Min: 0 Default: 0 Max: 100) + Define a percentage for how much of the unused space that GC should keep + available for writing. A high value will reclaim more of the space + occupied by unused blocks, creating a larger buffer against write + bursts at the cost of increased write amplification. Regardless + of this value, garbage collection will always aim to free a minimum + amount of blocks to keep max_open_zones open for data placement purposes. |