LU-16479 utils: Add option to manage degraded ZFS OST

[fs/lustre-release.git] / lustre / include / uapi / linux / lustre / lustre_disk.h

diff --git a/lustre/include/uapi/linux/lustre/lustre_disk.h b/lustre/include/uapi/linux/lustre/lustre_disk.h
index 8bbd2bd..674abed 100644 (file)
--- a/lustre/include/uapi/linux/lustre/lustre_disk.h
+++ b/lustre/include/uapi/linux/lustre/lustre_disk.h
@@ -209,7 +209,15 @@ struct lsd_client_data {
  * The lrd_client_gen field is assigned with lcd_generation value
  * to allow identify which client the reply data belongs to.
  */
-struct lsd_reply_data {
+struct lsd_reply_data_v1 {
+       __u64 lrd_transno;      /* transaction number */
+       __u64 lrd_xid;          /* transmission id */
+       __u64 lrd_data;         /* per-operation data */
+       __u32 lrd_result;       /* request result */
+       __u32 lrd_client_gen;   /* client generation */
+};
+
+struct lsd_reply_data_v2 {
        __u64 lrd_transno;      /* transaction number */
        __u64 lrd_xid;          /* transmission id */
        __u64 lrd_data;         /* per-operation data */
@@ -219,13 +227,19 @@ struct lsd_reply_data {
        __u32 lrd_padding[7];   /* unused fields, total size is 8X __u64 */
 };
 
+#define lsd_reply_data lsd_reply_data_v2
+
 /* Header of the reply_data file */
-#define LRH_MAGIC 0xbdabda01
+#define LRH_MAGIC_V1           0xbdabda01
+#define LRH_MAGIC_V2           0xbdabda02
+#define LRH_MAGIC              LRH_MAGIC_V2
+
+/* Don't change the header size for compatibility. */
 struct lsd_reply_header {
        __u32   lrh_magic;
        __u32   lrh_header_size;
        __u32   lrh_reply_size;
-       __u8    lrh_pad[sizeof(struct lsd_reply_data) - 12];
+       __u8    lrh_pad[sizeof(struct lsd_reply_data_v1) - 12];
 };
 
 /** @} disk */