#ifndef _LUSTRE_MDS_H
#define _LUSTRE_MDS_H
+#ifdef __KERNEL__
-#include <linux/obd_support.h>
+#include <linux/obd_class.h>
#include <linux/lustre_idl.h>
#include <linux/lustre_net.h>
+#include <linux/lustre_dlm.h>
+#include <linux/obd_lov.h> /* for lov_md */
-static inline void l_dput(struct dentry *de)
-{
- if (!de || IS_ERR(de))
- return;
- dput(de);
-}
-
-struct mds_run_ctxt {
- struct vfsmount *pwdmnt;
- struct dentry *pwd;
- mm_segment_t fs;
-};
-
-#define MDS_STOPPING 1
-#define MDS_RUNNING 2
#define LUSTRE_MDS_NAME "mds"
-
-struct mds_obd {
- char *mds_fstype;
- struct task_struct *mds_thread;
- __u32 mds_remote_nid;
- wait_queue_head_t mds_waitq;
- wait_queue_head_t mds_done_waitq;
- struct timer_list *mds_timer;
- int mds_interval;
- int mds_flags;
- struct list_head mds_reqs;
- struct super_block * mds_sb;
- struct vfsmount *mds_vfsmnt;
- struct mds_run_ctxt mds_ctxt;
- spinlock_t mds_lock;
- __u64 mds_lastino;
- struct file_operations *mds_fop;
- struct inode_operations *mds_iop;
- struct address_space_operations *mds_aops;
-
- struct ptlrpc_service *mds_service;
-};
-
+#define LUSTRE_MDC_NAME "mdc"
struct mds_update_record {
- __u32 ur_reclen;
__u32 ur_opcode;
struct ll_fid *ur_fid1;
struct ll_fid *ur_fid2;
int ur_tgtlen;
char *ur_tgt;
struct iattr ur_iattr;
- __u64 ur_id;
+ __u64 ur_rdev;
__u32 ur_mode;
__u32 ur_uid;
__u32 ur_gid;
__u64 ur_time;
-};
+};
+
+#define MDS_LR_CLIENT 8192
+#define MDS_LR_SIZE 128
+
+#define MDS_CLIENT_SLOTS 17
+
+#define MDS_MOUNT_RECOV 2
+
+/* Data stored per server at the head of the last_rcvd file. In le32 order. */
+struct mds_server_data {
+ __u8 msd_uuid[37]; /* server UUID */
+ __u8 uuid_padding[3]; /* unused */
+ __u64 msd_last_rcvd; /* last completed transaction ID */
+ __u64 msd_mount_count; /* MDS incarnation number */
+ __u8 padding[512 - 56];
+};
-/* mds/mds_pack.c */
-void *mds_req_tgt(struct mds_req *req);
-int mds_pack_req(char *name, int namelen, char *tgt, int tgtlen, struct ptlreq_hdr **hdr, union ptl_req *req, int *len, char **buf);
-int mds_unpack_req(char *buf, int len, struct ptlreq_hdr **hdr, union ptl_req *);
-int mds_pack_rep(char *name, int namelen, char *tgt, int tgtlen, struct ptlrep_hdr **hdr, union ptl_rep *rep, int *len, char **buf);
-int mds_unpack_rep(char *buf, int len, struct ptlrep_hdr **hdr, union ptl_rep *rep);
+/* Data stored per client in the last_rcvd file. In le32 order. */
+struct mds_client_data {
+ __u8 mcd_uuid[37]; /* client UUID */
+ __u8 uuid_padding[3]; /* unused */
+ __u64 mcd_last_rcvd; /* last completed transaction ID */
+ __u64 mcd_mount_count; /* MDS incarnation number */
+ __u32 mcd_last_xid; /* client RPC xid for the last transaction */
+ __u8 padding[MDS_LR_SIZE - 60];
+};
+
+/* In-memory access to client data from MDS struct */
+struct mds_client_info {
+ struct list_head mci_list;
+ struct list_head mci_open_head;
+ struct mds_client_data *mci_mcd;
+ int mci_off;
+};
+
+/* file data for open files on MDS */
+struct mds_file_data {
+ struct list_head mfd_list;
+ struct file * mfd_file;
+ __u64 mfd_clientfd;
+ __u32 mfd_clientcookie;
+};
/* mds/mds_reint.c */
-int mds_reint_rec(struct mds_update_record *r, struct ptlrpc_request *req);
+int mds_reint_rec(struct mds_update_record *r, int offset,
+ struct ptlrpc_request *req);
+struct mds_client_info *mds_uuid_to_mci(struct mds_obd *mds, __u8 *uuid);
/* lib/mds_updates.c */
-int mds_update_unpack(char *buf, int len, struct mds_update_record *r);
+void mds_unpack_body(struct mds_body *b);
+void mds_pack_req_body(struct ptlrpc_request *);
+void mds_pack_rep_body(struct ptlrpc_request *);
+int mds_update_unpack(struct ptlrpc_request *, int offset,
+ struct mds_update_record *);
-void mds_setattr_pack(struct mds_rec_setattr *rec, struct inode *inode, struct iattr *iattr);
-void mds_create_pack(struct mds_rec_create *rec, struct inode *inode, const char *name, int namelen, __u32 mode, __u64 id, __u32 uid, __u32 gid, __u64 time, const char *tgt, int tgtlen);
-void mds_unlink_pack(struct mds_rec_unlink *rec, struct inode *inode, const char *name, int namelen);
-void mds_link_pack(struct mds_rec_link *rec, struct inode *inode, struct inode *dir, const char *name, int namelen);
-void mds_rename_pack(struct mds_rec_rename *rec, struct inode *srcdir, struct inode *tgtdir, const char *name, int namelen, const char *tgt, int tgtlen);
+void mds_getattr_pack(struct ptlrpc_request *req, int offset,
+ struct inode *inode, const char *name, int namelen);
+void mds_setattr_pack(struct ptlrpc_request *, int offset, struct inode *,
+ struct iattr *, const char *name, int namelen);
+void mds_create_pack(struct ptlrpc_request *, int offset, struct inode *,
+ __u32 mode, __u64 id, __u32 uid, __u32 gid, __u64 time,
+ const char *name, int namelen, const char *tgt,
+ int tgtlen);
+void mds_unlink_pack(struct ptlrpc_request *, int offset, struct inode *inode,
+ struct inode *child, const char *name, int namelen);
+void mds_link_pack(struct ptlrpc_request *, int offset, struct inode *ino,
+ struct inode *dir, const char *name, int namelen);
+void mds_rename_pack(struct ptlrpc_request *, int offset, struct inode *srcdir,
+ struct inode *tgtdir, const char *name, int namelen,
+ const char *tgt, int tgtlen);
+void mds_pack_inode2fid(struct ll_fid *fid, struct inode *inode);
+void mds_pack_inode2body(struct mds_body *body, struct inode *inode);
/* mds/handler.c */
-struct dentry *mds_fid2dentry(struct mds_obd *mds, struct ll_fid *fid, struct vfsmount **mnt);
-
-/* llight/request.c */
-int mdc_getattr(struct ptlrpc_client *peer, ino_t ino, int type, int valid,
- struct mds_rep **mds_reply, struct ptlrep_hdr **hdr);
-int mdc_setattr(struct ptlrpc_client *peer, struct inode *inode,
- struct iattr *iattr, struct mds_rep **mds_reply,
- struct ptlrep_hdr **hdr);
-int mdc_readpage(struct ptlrpc_client *peer, ino_t ino, int type, __u64 offset,
- char *addr, struct mds_rep **rep, struct ptlrep_hdr **hdr);
-int mdc_create(struct ptlrpc_client *peer,
- struct inode *dir, const char *name, int namelen,
- const char *tgt, int tgtlen,
- int mode, __u64 id, __u32 uid, __u32 gid, __u64 time,
- struct mds_rep **rep, struct ptlrep_hdr **hdr);
-int mdc_unlink(struct ptlrpc_client *peer,
- struct inode *dir, const char *name, int namelen,
- struct mds_rep **rep, struct ptlrep_hdr **hdr);
-int mdc_link(struct ptlrpc_client *peer, struct dentry *src,
- struct inode *dir, const char *name, int namelen,
- struct mds_rep **rep, struct ptlrep_hdr **hdr);
-int mdc_rename(struct ptlrpc_client *peer, struct inode *src,
- struct inode *tgt, const char *old, int oldlen,
- const char *new, int newlen,
- struct mds_rep **rep, struct ptlrep_hdr **hdr);
+struct dentry *mds_name2locked_dentry(struct mds_obd *mds, struct dentry *dir,
+ struct vfsmount **mnt, char *name,
+ int namelen, int lock_mode,
+ struct lustre_handle *lockh,
+ int dir_lock_mode);
+struct dentry *mds_fid2locked_dentry(struct mds_obd *mds, struct ll_fid *fid,
+ struct vfsmount **mnt, int lock_mode,
+ struct lustre_handle *lockh);
+struct dentry *mds_fid2dentry(struct mds_obd *mds, struct ll_fid *fid,
+ struct vfsmount **mnt);
+int mds_lock_callback(struct lustre_handle *lockh, struct ldlm_lock_desc *desc,
+ void *data, int data_len, struct ptlrpc_request **req);
+int mds_reint(int offset, struct ptlrpc_request *req);
+
+/* mdc/mdc_request.c */
+extern int mdc_con2cl(struct lustre_handle *conn, struct ptlrpc_client **cl,
+ struct ptlrpc_connection **connection,
+ struct lustre_handle **rconn);
+
+int mdc_enqueue(struct lustre_handle *conn, int lock_type,
+ struct lookup_intent *it, int lock_mode, struct inode *dir,
+ struct dentry *de, struct lustre_handle *h, __u64 id,
+ char *tgt, int tgtlen, void *data, int datalen);
+int mdc_getlovinfo(struct obd_device *obd, struct lustre_handle *mdc_connh,
+ uuid_t **uuids, struct ptlrpc_request **request);
+int mdc_getstatus(struct lustre_handle *conn,
+ struct ll_fid *rootfid, __u64 *last_committed, __u64 *last_rcvd,
+ __u32 *last_xid, struct ptlrpc_request **);
+int mdc_getattr(struct lustre_handle *conn,
+ obd_id ino, int type, unsigned long valid, size_t ea_size,
+ struct ptlrpc_request **request);
+int mdc_statfs(struct lustre_handle *conn,
+ struct statfs *sfs, struct ptlrpc_request **request);
+int mdc_setattr(struct lustre_handle *conn,
+ struct inode *, struct iattr *iattr, struct ptlrpc_request **);
+int mdc_open(struct lustre_handle *conn,
+ obd_id ino, int type, int flags, struct lov_stripe_md *md, __u64 cookie, __u64 *fh, struct ptlrpc_request **request);
+int mdc_close(struct lustre_handle *conn,
+ obd_id ino, int type, __u64 fh, struct ptlrpc_request **req);
+int mdc_readpage(struct lustre_handle *conn, obd_id ino,
+ int type, __u64 offset, char *addr, struct ptlrpc_request **);
+int mdc_create(struct lustre_handle *conn,
+ struct inode *dir, const char *name, int namelen,
+ const char *tgt, int tgtlen, int mode, __u32 uid, __u32 gid,
+ __u64 time, __u64 rdev, struct lov_stripe_md *md,
+ struct ptlrpc_request **);
+int mdc_unlink(struct lustre_handle *conn,
+ struct inode *dir, struct inode *child, const char *name,
+ int namelen, struct ptlrpc_request **);
+int mdc_link(struct lustre_handle *conn,
+ struct dentry *src, struct inode *dir, const char *name,
+ int namelen, struct ptlrpc_request **);
+int mdc_rename(struct lustre_handle *conn,
+ struct inode *src, struct inode *tgt, const char *old,
+ int oldlen, const char *new, int newlen,
+ struct ptlrpc_request **);
int mdc_create_client(char *uuid, struct ptlrpc_client *cl);
+extern int mds_client_add(struct mds_obd *mds, struct mds_client_data *mcd,
+ int cl_off);
+
+/* mds/mds_fs.c */
+struct mds_fs_operations {
+ void *(* fs_start)(struct inode *inode, int op);
+ int (* fs_commit)(struct inode *inode, void *handle);
+ int (* fs_setattr)(struct dentry *dentry, void *handle,
+ struct iattr *iattr);
+ int (* fs_set_md)(struct inode *inode, void *handle,
+ struct lov_stripe_md *md);
+ int (* fs_get_md)(struct inode *inode,
+ struct lov_stripe_md *md);
+ ssize_t (* fs_readpage)(struct file *file, char *buf, size_t count,
+ loff_t *offset);
+ void (* fs_delete_inode)(struct inode *inode);
+ void (* cl_delete_inode)(struct inode *inode);
+ int (* fs_journal_data)(struct file *file);
+ int (* fs_set_last_rcvd)(struct mds_obd *mds, void *handle);
+ int (* fs_statfs)(struct super_block *sb, struct statfs *sfs);
+};
+
+extern int mds_register_fs_type(struct mds_fs_operations *op, const char *name);
+extern void mds_unregister_fs_type(const char *name);
+extern int mds_fs_setup(struct mds_obd *mds, struct vfsmount *mnt);
+extern void mds_fs_cleanup(struct mds_obd *mds);
+
+static inline void *mds_fs_start(struct mds_obd *mds, struct inode *inode,
+ int op)
+{
+ return mds->mds_fsops->fs_start(inode, op);
+}
+
+static inline int mds_fs_commit(struct mds_obd *mds, struct inode *inode,
+ void *handle)
+{
+ return mds->mds_fsops->fs_commit(inode, handle);
+}
+
+static inline int mds_fs_setattr(struct mds_obd *mds, struct dentry *dentry,
+ void *handle, struct iattr *iattr)
+{
+ /*
+ * NOTE: we probably don't need to take i_sem here when changing
+ * ATTR_SIZE because the MDS never needs to truncate a file.
+ * The ext2/ext3 code never truncates a directory, and files
+ * stored on the MDS are entirely sparse (no data blocks).
+ * If we do need to get it, we can do it here.
+ */
+ return mds->mds_fsops->fs_setattr(dentry, handle, iattr);
+}
+
+static inline int mds_fs_set_md(struct mds_obd *mds, struct inode *inode,
+ void *handle, struct lov_stripe_md *md)
+{
+ return mds->mds_fsops->fs_set_md(inode, handle, md);
+}
+
+static inline int mds_fs_get_md(struct mds_obd *mds, struct inode *inode,
+ struct lov_stripe_md *md)
+{
+ return mds->mds_fsops->fs_get_md(inode, md);
+}
+
+static inline ssize_t mds_fs_readpage(struct mds_obd *mds, struct file *file,
+ char *buf, size_t count, loff_t *offset)
+{
+ return mds->mds_fsops->fs_readpage(file, buf, count, offset);
+}
+
+/* Set up callback to update mds->mds_last_committed with the current
+ * value of mds->mds_last_recieved when this transaction is on disk.
+ */
+static inline int mds_fs_set_last_rcvd(struct mds_obd *mds, void *handle)
+{
+ return mds->mds_fsops->fs_set_last_rcvd(mds, handle);
+}
+
+/* Enable data journaling on the given file */
+static inline ssize_t mds_fs_journal_data(struct mds_obd *mds,
+ struct file *file)
+{
+ return mds->mds_fsops->fs_journal_data(file);
+}
+
+static inline int mds_fs_statfs(struct mds_obd *mds, struct statfs *sfs)
+{
+ if (mds->mds_fsops->fs_statfs)
+ return mds->mds_fsops->fs_statfs(mds->mds_sb, sfs);
+
+ return vfs_statfs(mds->mds_sb, sfs);
+}
+
+#define MDS_FSOP_UNLINK 1
+#define MDS_FSOP_RMDIR 2
+#define MDS_FSOP_RENAME 3
+#define MDS_FSOP_CREATE 4
+#define MDS_FSOP_MKDIR 5
+#define MDS_FSOP_SYMLINK 6
+#define MDS_FSOP_MKNOD 7
+#define MDS_FSOP_SETATTR 8
+#define MDS_FSOP_LINK 9
+
+#endif /* __KERNEL__ */
+
/* ioctls for trying requests */
#define IOC_REQUEST_TYPE 'f'
#define IOC_REQUEST_MIN_NR 30
-#define IOC_REQUEST_GETATTR _IOWR('f', 30, long)
-#define IOC_REQUEST_READPAGE _IOWR('f', 31, long)
-#define IOC_REQUEST_SETATTR _IOWR('f', 32, long)
-#define IOC_REQUEST_CREATE _IOWR('f', 33, long)
-#define IOC_REQUEST_MAX_NR 33
+#define IOC_REQUEST_GETATTR _IOWR('f', 30, long)
+#define IOC_REQUEST_READPAGE _IOWR('f', 31, long)
+#define IOC_REQUEST_SETATTR _IOWR('f', 32, long)
+#define IOC_REQUEST_CREATE _IOWR('f', 33, long)
+#define IOC_REQUEST_OPEN _IOWR('f', 34, long)
+#define IOC_REQUEST_CLOSE _IOWR('f', 35, long)
+#define IOC_REQUEST_MAX_NR 35
#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff