LU-8998 pfl: enhance PFID EA for PFL

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

diff --git a/lustre/include/lustre/lustre_user.h b/lustre/include/lustre/lustre_user.h
index 31ea745..5d64f05 100644 (file)
--- a/lustre/include/lustre/lustre_user.h
+++ b/lustre/include/lustre/lustre_user.h
@@ -159,9 +159,13 @@ static inline bool fid_is_zero(const struct lu_fid *fid)
  * parent MDT-object's layout EA. */
 #define f_stripe_idx f_ver
 
-struct filter_fid {
-       struct lu_fid   ff_parent;  /* ff_parent.f_ver == file stripe number */
-};
+struct ost_layout {
+       __u32   ol_stripe_size;
+       __u32   ol_stripe_count;
+       __u64   ol_comp_start;
+       __u64   ol_comp_end;
+       __u32   ol_comp_id;
+} __attribute__((packed));
 
 /* keep this one for compatibility */
 struct filter_fid_old {
@@ -170,11 +174,43 @@ struct filter_fid_old {
        __u64           ff_seq;
 };
 
+struct filter_fid {
+       struct lu_fid           ff_parent;
+       struct ost_layout       ff_layout;
+} __attribute__((packed));
+
 /* Userspace should treat lu_fid as opaque, and only use the following methods
  * to print or parse them.  Other functions (e.g. compare, swab) could be moved
  * here from lustre_idl.h if needed. */
 typedef struct lu_fid lustre_fid;
 
+enum lma_compat {
+       LMAC_HSM         = 0x00000001,
+/*     LMAC_SOM         = 0x00000002, obsolete since 2.8.0 */
+       LMAC_NOT_IN_OI   = 0x00000004, /* the object does NOT need OI mapping */
+       LMAC_FID_ON_OST  = 0x00000008, /* For OST-object, its OI mapping is
+                                      * under /O/<seq>/d<x>. */
+       LMAC_STRIPE_INFO = 0x00000010, /* stripe info in the LMA EA. */
+       LMAC_COMP_INFO   = 0x00000020, /* Component info in the LMA EA. */
+};
+
+/**
+ * Masks for all features that should be supported by a Lustre version to
+ * access a specific file.
+ * This information is stored in lustre_mdt_attrs::lma_incompat.
+ */
+enum lma_incompat {
+       LMAI_RELEASED           = 0x00000001, /* file is released */
+       LMAI_AGENT              = 0x00000002, /* agent inode */
+       LMAI_REMOTE_PARENT      = 0x00000004, /* the parent of the object
+                                                is on the remote MDT */
+       LMAI_STRIPED            = 0x00000008, /* striped directory inode */
+       LMAI_ORPHAN             = 0x00000010, /* inode is orphan */
+       LMA_INCOMPAT_SUPP       = (LMAI_AGENT | LMAI_REMOTE_PARENT | \
+                                  LMAI_STRIPED | LMAI_ORPHAN)
+};
+
+
 /**
  * Following struct for object attributes, that will be kept inode's EA.
  * Introduced in 2.0 release (please see b15993, for details)
@@ -196,6 +232,25 @@ struct lustre_mdt_attrs {
        struct lu_fid  lma_self_fid;
 };
 
+struct lustre_ost_attrs {
+       /* Use lustre_mdt_attrs directly for now, need a common header
+        * structure if want to change lustre_mdt_attrs in future. */
+       struct lustre_mdt_attrs loa_lma;
+
+       /* Below five elements are for OST-object's PFID EA, the
+        * lma_parent_fid::f_ver is composed of the stripe_count (high 16 bits)
+        * and the stripe_index (low 16 bits), the size should not exceed
+        * 5 * sizeof(__u64)) to be accessable by old Lustre. If the flag
+        * LMAC_STRIPE_INFO is set, then loa_parent_fid and loa_stripe_size
+        * are valid; if the flag LMAC_COMP_INFO is set, then the next three
+        * loa_comp_* elements are valid. */
+       struct lu_fid   loa_parent_fid;
+       __u32           loa_stripe_size;
+       __u32           loa_comp_id;
+       __u64           loa_comp_start;
+       __u64           loa_comp_end;
+};
+
 /**
  * Prior to 2.4, the LMA structure also included SOM attributes which has since
  * been moved to a dedicated xattr