651 lines
20 KiB
C
651 lines
20 KiB
C
/*
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* ceph_fs.h - Ceph constants and data types to share between kernel and
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* user space.
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*
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* Most types in this file are defined as little-endian, and are
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* primarily intended to describe data structures that pass over the
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* wire or that are stored on disk.
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*
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* LGPL2
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*/
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#ifndef _FS_CEPH_CEPH_FS_H
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#define _FS_CEPH_CEPH_FS_H
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#include "msgr.h"
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#include "rados.h"
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/*
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* Ceph release version
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*/
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#define CEPH_VERSION_MAJOR 0
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#define CEPH_VERSION_MINOR 18
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#define CEPH_VERSION_PATCH 0
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#define _CEPH_STRINGIFY(x) #x
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#define CEPH_STRINGIFY(x) _CEPH_STRINGIFY(x)
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#define CEPH_MAKE_VERSION(x, y, z) CEPH_STRINGIFY(x) "." CEPH_STRINGIFY(y) \
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"." CEPH_STRINGIFY(z)
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#define CEPH_VERSION CEPH_MAKE_VERSION(CEPH_VERSION_MAJOR, \
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CEPH_VERSION_MINOR, CEPH_VERSION_PATCH)
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/*
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* subprotocol versions. when specific messages types or high-level
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* protocols change, bump the affected components. we keep rev
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* internal cluster protocols separately from the public,
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* client-facing protocol.
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*/
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#define CEPH_OSD_PROTOCOL 8 /* cluster internal */
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#define CEPH_MDS_PROTOCOL 9 /* cluster internal */
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#define CEPH_MON_PROTOCOL 5 /* cluster internal */
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#define CEPH_OSDC_PROTOCOL 23 /* server/client */
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#define CEPH_MDSC_PROTOCOL 32 /* server/client */
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#define CEPH_MONC_PROTOCOL 15 /* server/client */
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#define CEPH_INO_ROOT 1
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#define CEPH_INO_CEPH 2 /* hidden .ceph dir */
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/* arbitrary limit on max # of monitors (cluster of 3 is typical) */
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#define CEPH_MAX_MON 31
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/*
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* feature bits
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*/
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#define CEPH_FEATURE_SUPPORTED 0
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#define CEPH_FEATURE_REQUIRED 0
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/*
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* ceph_file_layout - describe data layout for a file/inode
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*/
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struct ceph_file_layout {
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/* file -> object mapping */
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__le32 fl_stripe_unit; /* stripe unit, in bytes. must be multiple
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of page size. */
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__le32 fl_stripe_count; /* over this many objects */
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__le32 fl_object_size; /* until objects are this big, then move to
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new objects */
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__le32 fl_cas_hash; /* 0 = none; 1 = sha256 */
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/* pg -> disk layout */
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__le32 fl_object_stripe_unit; /* for per-object parity, if any */
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/* object -> pg layout */
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__le32 fl_pg_preferred; /* preferred primary for pg (-1 for none) */
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__le32 fl_pg_pool; /* namespace, crush ruleset, rep level */
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} __attribute__ ((packed));
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#define CEPH_MIN_STRIPE_UNIT 65536
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int ceph_file_layout_is_valid(const struct ceph_file_layout *layout);
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/* crypto algorithms */
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#define CEPH_CRYPTO_NONE 0x0
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#define CEPH_CRYPTO_AES 0x1
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/* security/authentication protocols */
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#define CEPH_AUTH_UNKNOWN 0x0
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#define CEPH_AUTH_NONE 0x1
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#define CEPH_AUTH_CEPHX 0x2
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/*********************************************
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* message layer
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*/
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/*
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* message types
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*/
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/* misc */
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#define CEPH_MSG_SHUTDOWN 1
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#define CEPH_MSG_PING 2
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/* client <-> monitor */
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#define CEPH_MSG_MON_MAP 4
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#define CEPH_MSG_MON_GET_MAP 5
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#define CEPH_MSG_STATFS 13
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#define CEPH_MSG_STATFS_REPLY 14
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#define CEPH_MSG_MON_SUBSCRIBE 15
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#define CEPH_MSG_MON_SUBSCRIBE_ACK 16
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#define CEPH_MSG_AUTH 17
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#define CEPH_MSG_AUTH_REPLY 18
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/* client <-> mds */
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#define CEPH_MSG_MDS_MAP 21
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#define CEPH_MSG_CLIENT_SESSION 22
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#define CEPH_MSG_CLIENT_RECONNECT 23
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#define CEPH_MSG_CLIENT_REQUEST 24
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#define CEPH_MSG_CLIENT_REQUEST_FORWARD 25
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#define CEPH_MSG_CLIENT_REPLY 26
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#define CEPH_MSG_CLIENT_CAPS 0x310
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#define CEPH_MSG_CLIENT_LEASE 0x311
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#define CEPH_MSG_CLIENT_SNAP 0x312
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#define CEPH_MSG_CLIENT_CAPRELEASE 0x313
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/* osd */
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#define CEPH_MSG_OSD_MAP 41
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#define CEPH_MSG_OSD_OP 42
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#define CEPH_MSG_OSD_OPREPLY 43
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struct ceph_mon_request_header {
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__le64 have_version;
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__le16 session_mon;
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__le64 session_mon_tid;
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} __attribute__ ((packed));
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struct ceph_mon_statfs {
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struct ceph_mon_request_header monhdr;
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struct ceph_fsid fsid;
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} __attribute__ ((packed));
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struct ceph_statfs {
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__le64 kb, kb_used, kb_avail;
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__le64 num_objects;
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} __attribute__ ((packed));
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struct ceph_mon_statfs_reply {
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struct ceph_fsid fsid;
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__le64 version;
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struct ceph_statfs st;
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} __attribute__ ((packed));
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struct ceph_osd_getmap {
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struct ceph_mon_request_header monhdr;
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struct ceph_fsid fsid;
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__le32 start;
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} __attribute__ ((packed));
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struct ceph_mds_getmap {
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struct ceph_mon_request_header monhdr;
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struct ceph_fsid fsid;
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} __attribute__ ((packed));
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struct ceph_client_mount {
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struct ceph_mon_request_header monhdr;
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} __attribute__ ((packed));
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struct ceph_mon_subscribe_item {
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__le64 have_version; __le64 have;
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__u8 onetime;
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} __attribute__ ((packed));
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struct ceph_mon_subscribe_ack {
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__le32 duration; /* seconds */
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struct ceph_fsid fsid;
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} __attribute__ ((packed));
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/*
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* mds states
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* > 0 -> in
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* <= 0 -> out
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*/
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#define CEPH_MDS_STATE_DNE 0 /* down, does not exist. */
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#define CEPH_MDS_STATE_STOPPED -1 /* down, once existed, but no subtrees.
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empty log. */
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#define CEPH_MDS_STATE_BOOT -4 /* up, boot announcement. */
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#define CEPH_MDS_STATE_STANDBY -5 /* up, idle. waiting for assignment. */
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#define CEPH_MDS_STATE_CREATING -6 /* up, creating MDS instance. */
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#define CEPH_MDS_STATE_STARTING -7 /* up, starting previously stopped mds */
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#define CEPH_MDS_STATE_STANDBY_REPLAY -8 /* up, tailing active node's journal */
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#define CEPH_MDS_STATE_REPLAY 8 /* up, replaying journal. */
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#define CEPH_MDS_STATE_RESOLVE 9 /* up, disambiguating distributed
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operations (import, rename, etc.) */
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#define CEPH_MDS_STATE_RECONNECT 10 /* up, reconnect to clients */
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#define CEPH_MDS_STATE_REJOIN 11 /* up, rejoining distributed cache */
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#define CEPH_MDS_STATE_CLIENTREPLAY 12 /* up, replaying client operations */
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#define CEPH_MDS_STATE_ACTIVE 13 /* up, active */
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#define CEPH_MDS_STATE_STOPPING 14 /* up, but exporting metadata */
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extern const char *ceph_mds_state_name(int s);
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/*
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* metadata lock types.
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* - these are bitmasks.. we can compose them
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* - they also define the lock ordering by the MDS
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* - a few of these are internal to the mds
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*/
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#define CEPH_LOCK_DN 1
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#define CEPH_LOCK_ISNAP 2
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#define CEPH_LOCK_IVERSION 4 /* mds internal */
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#define CEPH_LOCK_IFILE 8 /* mds internal */
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#define CEPH_LOCK_IAUTH 32
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#define CEPH_LOCK_ILINK 64
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#define CEPH_LOCK_IDFT 128 /* dir frag tree */
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#define CEPH_LOCK_INEST 256 /* mds internal */
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#define CEPH_LOCK_IXATTR 512
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#define CEPH_LOCK_INO 2048 /* immutable inode bits; not a lock */
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/* client_session ops */
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enum {
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CEPH_SESSION_REQUEST_OPEN,
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CEPH_SESSION_OPEN,
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CEPH_SESSION_REQUEST_CLOSE,
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CEPH_SESSION_CLOSE,
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CEPH_SESSION_REQUEST_RENEWCAPS,
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CEPH_SESSION_RENEWCAPS,
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CEPH_SESSION_STALE,
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CEPH_SESSION_RECALL_STATE,
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};
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extern const char *ceph_session_op_name(int op);
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struct ceph_mds_session_head {
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__le32 op;
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__le64 seq;
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struct ceph_timespec stamp;
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__le32 max_caps, max_leases;
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} __attribute__ ((packed));
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/* client_request */
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/*
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* metadata ops.
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* & 0x001000 -> write op
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* & 0x010000 -> follow symlink (e.g. stat(), not lstat()).
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& & 0x100000 -> use weird ino/path trace
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*/
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#define CEPH_MDS_OP_WRITE 0x001000
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enum {
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CEPH_MDS_OP_LOOKUP = 0x00100,
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CEPH_MDS_OP_GETATTR = 0x00101,
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CEPH_MDS_OP_LOOKUPHASH = 0x00102,
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CEPH_MDS_OP_LOOKUPPARENT = 0x00103,
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CEPH_MDS_OP_SETXATTR = 0x01105,
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CEPH_MDS_OP_RMXATTR = 0x01106,
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CEPH_MDS_OP_SETLAYOUT = 0x01107,
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CEPH_MDS_OP_SETATTR = 0x01108,
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CEPH_MDS_OP_MKNOD = 0x01201,
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CEPH_MDS_OP_LINK = 0x01202,
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CEPH_MDS_OP_UNLINK = 0x01203,
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CEPH_MDS_OP_RENAME = 0x01204,
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CEPH_MDS_OP_MKDIR = 0x01220,
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CEPH_MDS_OP_RMDIR = 0x01221,
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CEPH_MDS_OP_SYMLINK = 0x01222,
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CEPH_MDS_OP_CREATE = 0x01301,
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CEPH_MDS_OP_OPEN = 0x00302,
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CEPH_MDS_OP_READDIR = 0x00305,
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CEPH_MDS_OP_LOOKUPSNAP = 0x00400,
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CEPH_MDS_OP_MKSNAP = 0x01400,
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CEPH_MDS_OP_RMSNAP = 0x01401,
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CEPH_MDS_OP_LSSNAP = 0x00402,
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};
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extern const char *ceph_mds_op_name(int op);
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#define CEPH_SETATTR_MODE 1
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#define CEPH_SETATTR_UID 2
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#define CEPH_SETATTR_GID 4
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#define CEPH_SETATTR_MTIME 8
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#define CEPH_SETATTR_ATIME 16
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#define CEPH_SETATTR_SIZE 32
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#define CEPH_SETATTR_CTIME 64
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union ceph_mds_request_args {
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struct {
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__le32 mask; /* CEPH_CAP_* */
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} __attribute__ ((packed)) getattr;
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struct {
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__le32 mode;
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__le32 uid;
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__le32 gid;
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struct ceph_timespec mtime;
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struct ceph_timespec atime;
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__le64 size, old_size; /* old_size needed by truncate */
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__le32 mask; /* CEPH_SETATTR_* */
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} __attribute__ ((packed)) setattr;
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struct {
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__le32 frag; /* which dir fragment */
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__le32 max_entries; /* how many dentries to grab */
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} __attribute__ ((packed)) readdir;
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struct {
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__le32 mode;
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__le32 rdev;
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} __attribute__ ((packed)) mknod;
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struct {
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__le32 mode;
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} __attribute__ ((packed)) mkdir;
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struct {
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__le32 flags;
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__le32 mode;
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__le32 stripe_unit; /* layout for newly created file */
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__le32 stripe_count; /* ... */
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__le32 object_size;
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__le32 file_replication;
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__le32 preferred;
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} __attribute__ ((packed)) open;
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struct {
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__le32 flags;
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} __attribute__ ((packed)) setxattr;
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struct {
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struct ceph_file_layout layout;
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} __attribute__ ((packed)) setlayout;
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} __attribute__ ((packed));
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#define CEPH_MDS_FLAG_REPLAY 1 /* this is a replayed op */
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#define CEPH_MDS_FLAG_WANT_DENTRY 2 /* want dentry in reply */
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struct ceph_mds_request_head {
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__le64 oldest_client_tid;
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__le32 mdsmap_epoch; /* on client */
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__le32 flags; /* CEPH_MDS_FLAG_* */
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__u8 num_retry, num_fwd; /* count retry, fwd attempts */
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__le16 num_releases; /* # include cap/lease release records */
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__le32 op; /* mds op code */
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__le32 caller_uid, caller_gid;
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__le64 ino; /* use this ino for openc, mkdir, mknod,
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etc. (if replaying) */
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union ceph_mds_request_args args;
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} __attribute__ ((packed));
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/* cap/lease release record */
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struct ceph_mds_request_release {
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__le64 ino, cap_id; /* ino and unique cap id */
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__le32 caps, wanted; /* new issued, wanted */
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__le32 seq, issue_seq, mseq;
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__le32 dname_seq; /* if releasing a dentry lease, a */
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__le32 dname_len; /* string follows. */
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} __attribute__ ((packed));
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/* client reply */
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struct ceph_mds_reply_head {
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__le32 op;
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__le32 result;
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__le32 mdsmap_epoch;
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__u8 safe; /* true if committed to disk */
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__u8 is_dentry, is_target; /* true if dentry, target inode records
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are included with reply */
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} __attribute__ ((packed));
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/* one for each node split */
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struct ceph_frag_tree_split {
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__le32 frag; /* this frag splits... */
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__le32 by; /* ...by this many bits */
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} __attribute__ ((packed));
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struct ceph_frag_tree_head {
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__le32 nsplits; /* num ceph_frag_tree_split records */
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struct ceph_frag_tree_split splits[];
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} __attribute__ ((packed));
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/* capability issue, for bundling with mds reply */
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struct ceph_mds_reply_cap {
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__le32 caps, wanted; /* caps issued, wanted */
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__le64 cap_id;
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__le32 seq, mseq;
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__le64 realm; /* snap realm */
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__u8 flags; /* CEPH_CAP_FLAG_* */
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} __attribute__ ((packed));
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#define CEPH_CAP_FLAG_AUTH 1 /* cap is issued by auth mds */
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/* inode record, for bundling with mds reply */
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struct ceph_mds_reply_inode {
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__le64 ino;
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__le64 snapid;
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__le32 rdev;
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__le64 version; /* inode version */
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__le64 xattr_version; /* version for xattr blob */
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struct ceph_mds_reply_cap cap; /* caps issued for this inode */
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struct ceph_file_layout layout;
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struct ceph_timespec ctime, mtime, atime;
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__le32 time_warp_seq;
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__le64 size, max_size, truncate_size;
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__le32 truncate_seq;
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__le32 mode, uid, gid;
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__le32 nlink;
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__le64 files, subdirs, rbytes, rfiles, rsubdirs; /* dir stats */
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struct ceph_timespec rctime;
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struct ceph_frag_tree_head fragtree; /* (must be at end of struct) */
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} __attribute__ ((packed));
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/* followed by frag array, then symlink string, then xattr blob */
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/* reply_lease follows dname, and reply_inode */
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struct ceph_mds_reply_lease {
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__le16 mask; /* lease type(s) */
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__le32 duration_ms; /* lease duration */
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__le32 seq;
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} __attribute__ ((packed));
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struct ceph_mds_reply_dirfrag {
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__le32 frag; /* fragment */
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__le32 auth; /* auth mds, if this is a delegation point */
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__le32 ndist; /* number of mds' this is replicated on */
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__le32 dist[];
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} __attribute__ ((packed));
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/* file access modes */
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#define CEPH_FILE_MODE_PIN 0
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#define CEPH_FILE_MODE_RD 1
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#define CEPH_FILE_MODE_WR 2
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#define CEPH_FILE_MODE_RDWR 3 /* RD | WR */
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#define CEPH_FILE_MODE_LAZY 4 /* lazy io */
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#define CEPH_FILE_MODE_NUM 8 /* bc these are bit fields.. mostly */
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int ceph_flags_to_mode(int flags);
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/* capability bits */
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#define CEPH_CAP_PIN 1 /* no specific capabilities beyond the pin */
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/* generic cap bits */
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#define CEPH_CAP_GSHARED 1 /* client can reads */
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#define CEPH_CAP_GEXCL 2 /* client can read and update */
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#define CEPH_CAP_GCACHE 4 /* (file) client can cache reads */
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#define CEPH_CAP_GRD 8 /* (file) client can read */
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#define CEPH_CAP_GWR 16 /* (file) client can write */
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#define CEPH_CAP_GBUFFER 32 /* (file) client can buffer writes */
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#define CEPH_CAP_GWREXTEND 64 /* (file) client can extend EOF */
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#define CEPH_CAP_GLAZYIO 128 /* (file) client can perform lazy io */
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/* per-lock shift */
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#define CEPH_CAP_SAUTH 2
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#define CEPH_CAP_SLINK 4
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#define CEPH_CAP_SXATTR 6
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#define CEPH_CAP_SFILE 8 /* goes at the end (uses >2 cap bits) */
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#define CEPH_CAP_BITS 16
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/* composed values */
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#define CEPH_CAP_AUTH_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SAUTH)
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#define CEPH_CAP_AUTH_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SAUTH)
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#define CEPH_CAP_LINK_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SLINK)
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#define CEPH_CAP_LINK_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SLINK)
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#define CEPH_CAP_XATTR_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SXATTR)
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#define CEPH_CAP_XATTR_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SXATTR)
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#define CEPH_CAP_FILE(x) (x << CEPH_CAP_SFILE)
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#define CEPH_CAP_FILE_SHARED (CEPH_CAP_GSHARED << CEPH_CAP_SFILE)
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#define CEPH_CAP_FILE_EXCL (CEPH_CAP_GEXCL << CEPH_CAP_SFILE)
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#define CEPH_CAP_FILE_CACHE (CEPH_CAP_GCACHE << CEPH_CAP_SFILE)
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#define CEPH_CAP_FILE_RD (CEPH_CAP_GRD << CEPH_CAP_SFILE)
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#define CEPH_CAP_FILE_WR (CEPH_CAP_GWR << CEPH_CAP_SFILE)
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#define CEPH_CAP_FILE_BUFFER (CEPH_CAP_GBUFFER << CEPH_CAP_SFILE)
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#define CEPH_CAP_FILE_WREXTEND (CEPH_CAP_GWREXTEND << CEPH_CAP_SFILE)
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#define CEPH_CAP_FILE_LAZYIO (CEPH_CAP_GLAZYIO << CEPH_CAP_SFILE)
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/* cap masks (for getattr) */
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#define CEPH_STAT_CAP_INODE CEPH_CAP_PIN
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#define CEPH_STAT_CAP_TYPE CEPH_CAP_PIN /* mode >> 12 */
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#define CEPH_STAT_CAP_SYMLINK CEPH_CAP_PIN
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#define CEPH_STAT_CAP_UID CEPH_CAP_AUTH_SHARED
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#define CEPH_STAT_CAP_GID CEPH_CAP_AUTH_SHARED
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#define CEPH_STAT_CAP_MODE CEPH_CAP_AUTH_SHARED
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#define CEPH_STAT_CAP_NLINK CEPH_CAP_LINK_SHARED
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#define CEPH_STAT_CAP_LAYOUT CEPH_CAP_FILE_SHARED
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#define CEPH_STAT_CAP_MTIME CEPH_CAP_FILE_SHARED
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#define CEPH_STAT_CAP_SIZE CEPH_CAP_FILE_SHARED
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#define CEPH_STAT_CAP_ATIME CEPH_CAP_FILE_SHARED /* fixme */
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#define CEPH_STAT_CAP_XATTR CEPH_CAP_XATTR_SHARED
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#define CEPH_STAT_CAP_INODE_ALL (CEPH_CAP_PIN | \
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CEPH_CAP_AUTH_SHARED | \
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CEPH_CAP_LINK_SHARED | \
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CEPH_CAP_FILE_SHARED | \
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CEPH_CAP_XATTR_SHARED)
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#define CEPH_CAP_ANY_SHARED (CEPH_CAP_AUTH_SHARED | \
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CEPH_CAP_LINK_SHARED | \
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CEPH_CAP_XATTR_SHARED | \
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CEPH_CAP_FILE_SHARED)
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#define CEPH_CAP_ANY_RD (CEPH_CAP_ANY_SHARED | CEPH_CAP_FILE_RD | \
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CEPH_CAP_FILE_CACHE)
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|
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#define CEPH_CAP_ANY_EXCL (CEPH_CAP_AUTH_EXCL | \
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CEPH_CAP_LINK_EXCL | \
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CEPH_CAP_XATTR_EXCL | \
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CEPH_CAP_FILE_EXCL)
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#define CEPH_CAP_ANY_FILE_WR (CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER | \
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CEPH_CAP_FILE_EXCL)
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#define CEPH_CAP_ANY_WR (CEPH_CAP_ANY_EXCL | CEPH_CAP_ANY_FILE_WR)
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#define CEPH_CAP_ANY (CEPH_CAP_ANY_RD | CEPH_CAP_ANY_EXCL | \
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CEPH_CAP_ANY_FILE_WR | CEPH_CAP_PIN)
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|
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#define CEPH_CAP_LOCKS (CEPH_LOCK_IFILE | CEPH_LOCK_IAUTH | CEPH_LOCK_ILINK | \
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|
CEPH_LOCK_IXATTR)
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int ceph_caps_for_mode(int mode);
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enum {
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CEPH_CAP_OP_GRANT, /* mds->client grant */
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CEPH_CAP_OP_REVOKE, /* mds->client revoke */
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CEPH_CAP_OP_TRUNC, /* mds->client trunc notify */
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CEPH_CAP_OP_EXPORT, /* mds has exported the cap */
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|
CEPH_CAP_OP_IMPORT, /* mds has imported the cap */
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CEPH_CAP_OP_UPDATE, /* client->mds update */
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|
CEPH_CAP_OP_DROP, /* client->mds drop cap bits */
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|
CEPH_CAP_OP_FLUSH, /* client->mds cap writeback */
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|
CEPH_CAP_OP_FLUSH_ACK, /* mds->client flushed */
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|
CEPH_CAP_OP_FLUSHSNAP, /* client->mds flush snapped metadata */
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|
CEPH_CAP_OP_FLUSHSNAP_ACK, /* mds->client flushed snapped metadata */
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|
CEPH_CAP_OP_RELEASE, /* client->mds release (clean) cap */
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|
CEPH_CAP_OP_RENEW, /* client->mds renewal request */
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|
};
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|
|
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extern const char *ceph_cap_op_name(int op);
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|
|
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/*
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|
* caps message, used for capability callbacks, acks, requests, etc.
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|
*/
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|
struct ceph_mds_caps {
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|
__le32 op; /* CEPH_CAP_OP_* */
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|
__le64 ino, realm;
|
|
__le64 cap_id;
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|
__le32 seq, issue_seq;
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|
__le32 caps, wanted, dirty; /* latest issued/wanted/dirty */
|
|
__le32 migrate_seq;
|
|
__le64 snap_follows;
|
|
__le32 snap_trace_len;
|
|
|
|
/* authlock */
|
|
__le32 uid, gid, mode;
|
|
|
|
/* linklock */
|
|
__le32 nlink;
|
|
|
|
/* xattrlock */
|
|
__le32 xattr_len;
|
|
__le64 xattr_version;
|
|
|
|
/* filelock */
|
|
__le64 size, max_size, truncate_size;
|
|
__le32 truncate_seq;
|
|
struct ceph_timespec mtime, atime, ctime;
|
|
struct ceph_file_layout layout;
|
|
__le32 time_warp_seq;
|
|
} __attribute__ ((packed));
|
|
|
|
/* cap release msg head */
|
|
struct ceph_mds_cap_release {
|
|
__le32 num; /* number of cap_items that follow */
|
|
} __attribute__ ((packed));
|
|
|
|
struct ceph_mds_cap_item {
|
|
__le64 ino;
|
|
__le64 cap_id;
|
|
__le32 migrate_seq, seq;
|
|
} __attribute__ ((packed));
|
|
|
|
#define CEPH_MDS_LEASE_REVOKE 1 /* mds -> client */
|
|
#define CEPH_MDS_LEASE_RELEASE 2 /* client -> mds */
|
|
#define CEPH_MDS_LEASE_RENEW 3 /* client <-> mds */
|
|
#define CEPH_MDS_LEASE_REVOKE_ACK 4 /* client -> mds */
|
|
|
|
extern const char *ceph_lease_op_name(int o);
|
|
|
|
/* lease msg header */
|
|
struct ceph_mds_lease {
|
|
__u8 action; /* CEPH_MDS_LEASE_* */
|
|
__le16 mask; /* which lease */
|
|
__le64 ino;
|
|
__le64 first, last; /* snap range */
|
|
__le32 seq;
|
|
__le32 duration_ms; /* duration of renewal */
|
|
} __attribute__ ((packed));
|
|
/* followed by a __le32+string for dname */
|
|
|
|
/* client reconnect */
|
|
struct ceph_mds_cap_reconnect {
|
|
__le64 cap_id;
|
|
__le32 wanted;
|
|
__le32 issued;
|
|
__le64 size;
|
|
struct ceph_timespec mtime, atime;
|
|
__le64 snaprealm;
|
|
__le64 pathbase; /* base ino for our path to this ino */
|
|
} __attribute__ ((packed));
|
|
/* followed by encoded string */
|
|
|
|
struct ceph_mds_snaprealm_reconnect {
|
|
__le64 ino; /* snap realm base */
|
|
__le64 seq; /* snap seq for this snap realm */
|
|
__le64 parent; /* parent realm */
|
|
} __attribute__ ((packed));
|
|
|
|
/*
|
|
* snaps
|
|
*/
|
|
enum {
|
|
CEPH_SNAP_OP_UPDATE, /* CREATE or DESTROY */
|
|
CEPH_SNAP_OP_CREATE,
|
|
CEPH_SNAP_OP_DESTROY,
|
|
CEPH_SNAP_OP_SPLIT,
|
|
};
|
|
|
|
extern const char *ceph_snap_op_name(int o);
|
|
|
|
/* snap msg header */
|
|
struct ceph_mds_snap_head {
|
|
__le32 op; /* CEPH_SNAP_OP_* */
|
|
__le64 split; /* ino to split off, if any */
|
|
__le32 num_split_inos; /* # inos belonging to new child realm */
|
|
__le32 num_split_realms; /* # child realms udner new child realm */
|
|
__le32 trace_len; /* size of snap trace blob */
|
|
} __attribute__ ((packed));
|
|
/* followed by split ino list, then split realms, then the trace blob */
|
|
|
|
/*
|
|
* encode info about a snaprealm, as viewed by a client
|
|
*/
|
|
struct ceph_mds_snap_realm {
|
|
__le64 ino; /* ino */
|
|
__le64 created; /* snap: when created */
|
|
__le64 parent; /* ino: parent realm */
|
|
__le64 parent_since; /* snap: same parent since */
|
|
__le64 seq; /* snap: version */
|
|
__le32 num_snaps;
|
|
__le32 num_prior_parent_snaps;
|
|
} __attribute__ ((packed));
|
|
/* followed by my snap list, then prior parent snap list */
|
|
|
|
#endif
|