LU-9771 clio: no glimpse for data immutable file

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

diff --git a/lustre/include/uapi/linux/lustre/lustre_user.h b/lustre/include/uapi/linux/lustre/lustre_user.h
index bb18450..314cb97 100644 (file)
--- a/lustre/include/uapi/linux/lustre/lustre_user.h
+++ b/lustre/include/uapi/linux/lustre/lustre_user.h
@@ -274,6 +274,17 @@ struct lustre_ost_attrs {
  */
 #define LMA_OLD_SIZE (sizeof(struct lustre_mdt_attrs) + 5 * sizeof(__u64))
 
+enum {
+       LSOM_FL_VALID = 1 << 0,
+};
+
+struct lustre_som_attrs {
+       __u16   lsa_valid;
+       __u16   lsa_reserved[3];
+       __u64   lsa_size;
+       __u64   lsa_blocks;
+};
+
 /**
  * OST object IDentifier.
  */
@@ -432,7 +443,7 @@ enum ll_lease_type {
 #define LOV_PATTERN_NONE       0x000
 #define LOV_PATTERN_RAID0      0x001
 #define LOV_PATTERN_RAID1      0x002
-#define LOV_PATTERN_FIRST      0x100
+#define LOV_PATTERN_MDT                0x100
 #define LOV_PATTERN_CMOBD      0x200
 
 #define LOV_PATTERN_F_MASK     0xffff0000
@@ -443,6 +454,7 @@ enum ll_lease_type {
 static inline bool lov_pattern_supported(__u32 pattern)
 {
        return pattern == LOV_PATTERN_RAID0 ||
+              pattern == LOV_PATTERN_MDT ||
               pattern == (LOV_PATTERN_RAID0 | LOV_PATTERN_F_RELEASED);
 }
 
@@ -521,6 +533,11 @@ static inline bool lu_extent_is_overlapped(struct lu_extent *e1,
        return e1->e_start < e2->e_end && e2->e_start < e1->e_end;
 }
 
+static inline bool lu_extent_is_whole(struct lu_extent *e)
+{
+       return e->e_start == 0 && e->e_end == LUSTRE_EOF;
+}
+
 enum lov_comp_md_entry_flags {
        LCME_FL_PRIMARY = 0x00000001,   /* Not used */
        LCME_FL_STALE   = 0x00000002,   /* Not used */
@@ -556,7 +573,33 @@ struct lov_comp_md_entry_v1 {
        __u64                   lcme_padding[2];
 } __attribute__((packed));
 
-enum lov_comp_md_flags;
+#define SEQ_ID_MAX             0x0000FFFF
+#define SEQ_ID_MASK            SEQ_ID_MAX
+/* bit 30:16 of lcme_id is used to store mirror id */
+#define MIRROR_ID_MASK         0x7FFF0000
+#define MIRROR_ID_SHIFT                16
+
+static inline __u32 pflr_id(__u16 mirror_id, __u16 seqid)
+{
+       return ((mirror_id << MIRROR_ID_SHIFT) & MIRROR_ID_MASK) | seqid;
+}
+
+static inline __u16 mirror_id_of(__u32 id)
+{
+       return (id & MIRROR_ID_MASK) >> MIRROR_ID_SHIFT;
+}
+
+/**
+ * on-disk data for lcm_flags. Valid if lcm_magic is LOV_MAGIC_COMP_V1.
+ */
+enum lov_comp_md_flags {
+       /* the least 2 bits are used by FLR to record file state */
+       LCM_FL_NOT_FLR          = 0,
+       LCM_FL_RDONLY           = 1,
+       LCM_FL_WRITE_PENDING    = 2,
+       LCM_FL_SYNC_PENDING     = 3,
+       LCM_FL_FLR_MASK         = 0x3,
+};
 
 struct lov_comp_md_v1 {
        __u32   lcm_magic;      /* LOV_USER_MAGIC_COMP_V1 */
@@ -564,11 +607,19 @@ struct lov_comp_md_v1 {
        __u32   lcm_layout_gen;
        __u16   lcm_flags;
        __u16   lcm_entry_count;
-       __u64   lcm_padding1;
+       /* lcm_mirror_count stores the number of actual mirrors minus 1,
+        * so that non-flr files will have value 0 meaning 1 mirror. */
+       __u16   lcm_mirror_count;
+       __u16   lcm_padding1[3];
        __u64   lcm_padding2;
        struct lov_comp_md_entry_v1 lcm_entries[0];
 } __attribute__((packed));
 
+/*
+ * Maximum number of mirrors Lustre can support.
+ */
+#define LUSTRE_MIRROR_COUNT_MAX                16
+
 static inline __u32 lov_user_md_size(__u16 stripes, __u32 lmm_magic)
 {
        if (stripes == (__u16)-1)
@@ -856,6 +907,8 @@ struct if_quotactl {
 #define SWAP_LAYOUTS_KEEP_MTIME                (1 << 2)
 #define SWAP_LAYOUTS_KEEP_ATIME                (1 << 3)
 #define SWAP_LAYOUTS_CLOSE             (1 << 4)
+#define MERGE_LAYOUTS_CLOSE            (1 << 5)
+#define INTENT_LAYOUTS_CLOSE   (SWAP_LAYOUTS_CLOSE | MERGE_LAYOUTS_CLOSE)
 
 /* Swap XATTR_NAME_HSM as well, only on the MDT so far */
 #define SWAP_LAYOUTS_MDS_HSM           (1 << 31)