[PATCH proxmox 3/3] pbs-api-types: add reserved space to datastore tuning options

[Robert Obkircher <r.obkircher@proxmox.com>]

This is a tuning option because the optimal value depends on the
number and speed of concurrent writers.

Signed-off-by: Robert Obkircher <r.obkircher@proxmox.com>
---
 pbs-api-types/src/datastore.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/pbs-api-types/src/datastore.rs b/pbs-api-types/src/datastore.rs
index 47ae1819..36474f31 100644
--- a/pbs-api-types/src/datastore.rs
+++ b/pbs-api-types/src/datastore.rs
@@ -260,6 +260,10 @@ pub const GC_CACHE_CAPACITY_SCHEMA: Schema =
             type: ChunkOrder,
             optional: true,
         },
+        "reserved-space": {
+            type: HumanByte,
+            optional: true,
+        },
         "gc-atime-safety-check": {
             description:
                 "Check filesystem atime updates are honored during store creation and garbage \
@@ -295,6 +299,9 @@ pub struct DatastoreTuning {
     pub chunk_order: Option<ChunkOrder>,
     #[serde(skip_serializing_if = "Option::is_none")]
     pub sync_level: Option<DatastoreFSyncLevel>,
+    /// Amount of reserved space used to prevent the file system from becoming completely full.
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub reserved_space: Option<HumanByte>,
     #[serde(skip_serializing_if = "Option::is_none")]
     pub gc_atime_safety_check: Option<bool>,
     #[serde(skip_serializing_if = "Option::is_none")]
-- 
2.47.3