LU-9771 flr: mirror read and write

[fs/lustre-release.git] / lustre / include / lustre / lustreapi.h

diff --git a/lustre/include/lustre/lustreapi.h b/lustre/include/lustre/lustreapi.h
index cc50d5d..2a62a4e 100644 (file)
--- a/lustre/include/lustre/lustreapi.h
+++ b/lustre/include/lustre/lustreapi.h
@@ -771,6 +771,10 @@ int llapi_layout_comp_flags_clear(struct llapi_layout *layout, uint32_t flags);
  */
 int llapi_layout_comp_id_get(const struct llapi_layout *layout, uint32_t *id);
 /**
+ * Fetches the mirror ID of the current layout component.
+ */
+int llapi_layout_mirror_id_get(const struct llapi_layout *layout, uint32_t *id);
+/**
  * Adds one component to the existing composite or plain layout.
  */
 int llapi_layout_comp_add(struct llapi_layout *layout);
@@ -818,6 +822,17 @@ int llapi_layout_file_comp_set(const char *path,
  */
 bool llapi_layout_is_composite(struct llapi_layout *layout);
 
+/**
+ * FLR: mirror operation APIs
+ */
+int llapi_mirror_set(int fd, unsigned int id);
+int llapi_mirror_clear(int fd);
+ssize_t llapi_mirror_read(int fd, unsigned int id,
+                          void *buf, size_t count, off_t pos);
+ssize_t llapi_mirror_copy_many(int fd, unsigned int src,
+                               unsigned int *dst, size_t count);
+int llapi_mirror_copy(int fd, unsigned int src, unsigned int dst);
+
 /** @} llapi */
 
 #endif