Whamcloud - gitweb
- documentation update for MDS recovery
[fs/lustre-release.git] / lustre / mdc / mdc_request.c
index bf8b402..2e18b6d 100644 (file)
 
 #define EXPORT_SYMTAB
 
-#include <linux/config.h>
 #include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/string.h>
-#include <linux/stat.h>
-#include <linux/errno.h>
-#include <linux/locks.h>
-#include <linux/unistd.h>
-
-#include <asm/system.h>
-#include <asm/uaccess.h>
-#include <linux/module.h>
-
-#include <linux/fs.h>
-#include <linux/stat.h>
-#include <asm/uaccess.h>
-#include <asm/segment.h>
 #include <linux/miscdevice.h>
 
 #define DEBUG_SUBSYSTEM S_MDC
 
-#include <linux/obd_support.h>
-#include <linux/obd_class.h>
-#include <linux/lustre_lib.h>
-#include <linux/lustre_idl.h>
 #include <linux/lustre_mds.h>
+#include <linux/lustre_lite.h>
 
 #define REQUEST_MINOR 244
 
 extern int mds_queue_req(struct ptlrpc_request *);
 
-
-int mdc_getattr(struct ptlrpc_client *cl, ino_t ino, int type, int valid,
-                struct ptlrpc_request **req)
+int mdc_connect(struct ptlrpc_client *cl, struct ptlrpc_connection *conn,
+                struct ll_fid *rootfid, __u64 *last_committed, __u64 *last_rcvd,
+                __u32 *last_xid, struct ptlrpc_request **request)
 {
-        int rc;
-        struct ptlrpc_request *request;
-
+        struct ptlrpc_request *req;
+        struct mds_body *body;
+        int rc, size = sizeof(*body);
         ENTRY;
 
-        request = ptlrpc_prep_req(cl, MDS_GETATTR, 0, NULL, 0, NULL);
-        if (!request) {
-                CERROR("llight request: cannot pack\n");
+        req = ptlrpc_prep_req(cl, conn, MDS_CONNECT, 1, &size, NULL);
+        if (!req)
                 GOTO(out, rc = -ENOMEM);
+
+        body = lustre_msg_buf(req->rq_reqmsg, 0);
+        req->rq_replen = lustre_msg_size(1, &size);
+
+        mds_pack_req_body(req);
+        rc = ptlrpc_queue_wait(req);
+        rc = ptlrpc_check_status(req, rc);
+
+        if (!rc) {
+                mds_unpack_rep_body(req);
+                body = lustre_msg_buf(req->rq_repmsg, 0);
+                memcpy(rootfid, &body->fid1, sizeof(*rootfid));
+                *last_committed = req->rq_repmsg->last_committed;
+                *last_rcvd = req->rq_repmsg->last_rcvd;
+                *last_xid = body->last_xid;
+
+                CDEBUG(D_NET, "root ino=%ld, last_committed=%Lu, last_rcvd=%Lu,"
+                       " last_xid=%d\n",
+                       (unsigned long)rootfid->id,
+                       (unsigned long long)*last_committed,
+                       (unsigned long long)*last_rcvd,
+                       body->last_xid);
         }
 
-        ll_ino2fid(&request->rq_req.mds->fid1, ino, 0, type);
+        EXIT;
+ out:
+        ptlrpc_free_req(req); 
+        return rc;
+}
+
+
+int mdc_getattr(struct ptlrpc_client *cl, struct ptlrpc_connection *conn,
+                ino_t ino, int type, unsigned long valid,
+                struct ptlrpc_request **request)
+{
+        struct ptlrpc_request *req;
+        struct mds_body *body;
+        int rc, size = sizeof(*body);
+        ENTRY;
+
+        req = ptlrpc_prep_req(cl, conn, MDS_GETATTR, 1, &size, NULL);
+        if (!req)
+                GOTO(out, rc = -ENOMEM);
+
+        body = lustre_msg_buf(req->rq_reqmsg, 0);
+        ll_ino2fid(&body->fid1, ino, 0, type);
+        body->valid = valid;
 
-        request->rq_req.mds->valid = valid;
-        request->rq_replen =
-                sizeof(struct ptlrep_hdr) + sizeof(struct mds_rep);
+        req->rq_replen = lustre_msg_size(1, &size);
 
-        rc = ptlrpc_queue_wait(cl, request);
-        rc = ptlrpc_check_status(request, rc);
+        rc = ptlrpc_queue_wait(req);
+        rc = ptlrpc_check_status(req, rc);
 
-        if (!rc)
-                CDEBUG(D_NET, "mode: %o\n", request->rq_rep.mds->mode);
+        if (!rc) {
+                mds_unpack_rep_body(req);
+                body = lustre_msg_buf(req->rq_repmsg, 0);
+                CDEBUG(D_NET, "mode: %o\n", body->mode);
+        }
 
-        GOTO(out, rc);
+        EXIT;
  out:
-        *req = request;
+        *request = req;
         return rc;
 }
 
-int mdc_open(struct ptlrpc_client *cl, ino_t ino, int type, int flags,
-             __u64 *fh, struct ptlrpc_request **req)
+int mdc_open(struct ptlrpc_client *cl, struct ptlrpc_connection *conn,
+             ino_t ino, int type, int flags, __u64 *fh,
+             struct ptlrpc_request **request)
 {
-        struct ptlrpc_request *request;
-        int rc;
+        struct mds_body *body;
+        int rc, size = sizeof(*body);
+        struct ptlrpc_request *req;
 
-        request = ptlrpc_prep_req(cl, MDS_OPEN, 0, NULL, 0, NULL);
-        if (!request) {
-                CERROR("llight request: cannot pack\n");
-                rc = -ENOMEM;
-                goto out;
-        }
+        req = ptlrpc_prep_req(cl, conn, MDS_OPEN, 1, &size, NULL);
+        if (!req)
+                GOTO(out, rc = -ENOMEM);
 
-        ll_ino2fid(&request->rq_req.mds->fid1, ino, 0, type);
-        request->rq_req.mds->flags = HTON__u32(flags);
-        request->rq_replen =
-                sizeof(struct ptlrep_hdr) + sizeof(struct mds_rep);
+        req->rq_flags |= PTL_RPC_FL_RETAIN;
+        body = lustre_msg_buf(req->rq_reqmsg, 0);
+        ll_ino2fid(&body->fid1, ino, 0, type);
+        body->flags = HTON__u32(flags);
 
-        rc = ptlrpc_queue_wait(cl, request);
-        rc = ptlrpc_check_status(request, rc);
+        req->rq_replen = lustre_msg_size(1, &size);
 
-        if (rc) {
-                CERROR("llight request: error in handling %d\n", rc);
-                goto out;
+        rc = ptlrpc_queue_wait(req);
+        rc = ptlrpc_check_status(req, rc);
+
+        if (!rc) {
+                mds_unpack_rep_body(req);
+                body = lustre_msg_buf(req->rq_repmsg, 0);
+                *fh = body->objid;
         }
 
-        *fh = request->rq_rep.mds->objid;
+        EXIT;
  out:
-        *req = request;
+        *request = req;
         return rc;
 }
 
-
-int mdc_close(struct ptlrpc_client *cl, ino_t ino, int type, __u64 fh,
-              struct ptlrpc_request **req)
+int mdc_close(struct ptlrpc_client *cl, struct ptlrpc_connection *conn,
+              ino_t ino, int type, __u64 fh, struct ptlrpc_request **request)
 {
-        struct ptlrpc_request *request;
-        int rc;
+        struct mds_body *body;
+        int rc, size = sizeof(*body);
+        struct ptlrpc_request *req;
 
-        request = ptlrpc_prep_req(cl, MDS_CLOSE, 0, NULL, 0, NULL);
-        if (!request) {
-                CERROR("llight request: cannot pack\n");
-                rc = -ENOMEM;
-                goto out;
-        }
+        req = ptlrpc_prep_req(cl, conn, MDS_CLOSE, 1, &size, NULL);
+        if (!req)
+                GOTO(out, rc = -ENOMEM);
 
-        ll_ino2fid(&request->rq_req.mds->fid1, ino, 0, type);
-        request->rq_req.mds->objid = fh;
-        request->rq_replen =
-                sizeof(struct ptlrep_hdr) + sizeof(struct mds_rep);
+        body = lustre_msg_buf(req->rq_reqmsg, 0);
+        ll_ino2fid(&body->fid1, ino, 0, type);
+        body->objid = fh;
 
-        rc = ptlrpc_queue_wait(cl, request);
-        rc = ptlrpc_check_status(request, rc);
+        req->rq_replen = lustre_msg_size(0, NULL);
 
-        if (rc) {
-                CERROR("llight request: error in handling %d\n", rc);
-                goto out;
-        }
+        rc = ptlrpc_queue_wait(req);
+        rc = ptlrpc_check_status(req, rc);
 
+        EXIT;
  out:
-        *req = request;
+        *request = req;
         return rc;
 }
 
-int mdc_readpage(struct ptlrpc_client *cl, ino_t ino, int type, __u64 offset,
-                 char *addr, struct ptlrpc_request **req)
+int mdc_readpage(struct ptlrpc_client *cl, struct ptlrpc_connection *conn,
+                 ino_t ino, int type, __u64 offset, char *addr,
+                 struct ptlrpc_request **request)
 {
-        struct ptlrpc_request *request = NULL;
+        struct ptlrpc_request *req = NULL;
         struct ptlrpc_bulk_desc *bulk = NULL;
         struct niobuf niobuf;
-        int rc;
+        struct mds_body *body;
+        int rc, size[2] = {sizeof(*body), sizeof(struct niobuf)};
+        char *bufs[2] = {NULL, (char *)&niobuf};
 
         niobuf.addr = (__u64) (long) addr;
 
-        CDEBUG(D_INODE, "inode: %ld\n", ino);
+        CDEBUG(D_INODE, "inode: %ld\n", (long)ino);
 
-        bulk = ptlrpc_prep_bulk(&cl->cli_server);
+        bulk = ptlrpc_prep_bulk(conn);
         if (bulk == NULL) {
                 CERROR("%s: cannot init bulk desc\n", __FUNCTION__);
                 rc = -ENOMEM;
                 goto out;
         }
 
-        request = ptlrpc_prep_req(cl, MDS_READPAGE, 0, NULL,
-                                  sizeof(struct niobuf), (char *)&niobuf);
-        if (!request) {
-                CERROR("%s: cannot pack\n", __FUNCTION__);
-                rc = -ENOMEM;
-                goto out;
-        }
+        req = ptlrpc_prep_req(cl, conn, MDS_READPAGE, 2, size, bufs);
+        if (!req)
+                GOTO(out, rc = -ENOMEM);
 
         bulk->b_buflen = PAGE_SIZE;
         bulk->b_buf = (void *)(long)niobuf.addr;
         bulk->b_portal = MDS_BULK_PORTAL;
-        bulk->b_xid = request->rq_xid;
+        bulk->b_xid = req->rq_reqmsg->xid;
 
         rc = ptlrpc_register_bulk(bulk);
         if (rc) {
-                CERROR("%s: couldn't setup bulk sink: error %d.\n",
-                       __FUNCTION__, rc);
-                goto out;
+                CERROR("couldn't setup bulk sink: error %d.\n", rc);
+                GOTO(out, rc);
         }
 
-        request->rq_req.mds->fid1.id = ino;
-        request->rq_req.mds->fid1.f_type = type;
-        request->rq_req.mds->size = offset;
-        request->rq_req.mds->tgtlen = sizeof(niobuf);
-        request->rq_replen = sizeof(struct ptlrep_hdr) + sizeof(struct mds_rep);
+        body = lustre_msg_buf(req->rq_reqmsg, 0);
+        body->fid1.id = ino;
+        body->fid1.f_type = type;
+        body->size = offset;
 
-        rc = ptlrpc_queue_wait(cl, request);
+        req->rq_replen = lustre_msg_size(1, size);
+
+        rc = ptlrpc_queue_wait(req);
         if (rc) {
-                CERROR("mdc request: error in handling %d\n", rc);
+                CERROR("error in handling %d\n", rc);
                 ptlrpc_abort_bulk(bulk);
-                goto out;
+                GOTO(out, rc);
         }
 
-        CDEBUG(D_INODE, "mode: %o\n", request->rq_rep.mds->mode);
+        mds_unpack_rep_body(req);
+        EXIT;
 
  out:
-        *req = request;
-        if (bulk != NULL)
-                OBD_FREE(bulk, sizeof(*bulk));
+        *request = req;
+        ptlrpc_free_bulk(bulk);
         return rc;
 }
 
 static int request_ioctl(struct inode *inode, struct file *file,
                          unsigned int cmd, unsigned long arg)
 {
-        int err;
+        int err = 0;
         struct ptlrpc_client cl;
+        struct ptlrpc_connection *conn;
         struct ptlrpc_request *request;
 
         ENTRY;
@@ -232,10 +252,10 @@ static int request_ioctl(struct inode *inode, struct file *file,
                 RETURN(-EINVAL);
         }
 
-        err = ptlrpc_connect_client(-1, "mds",
-                                    MDS_REQUEST_PORTAL, MDC_REPLY_PORTAL,
-                                    mds_pack_req, mds_unpack_rep, &cl);
-        if (err) {
+        ptlrpc_init_client(NULL, NULL, 
+                           MDS_REQUEST_PORTAL, MDC_REPLY_PORTAL, &cl);
+        conn = ptlrpc_uuid_to_connection("mds");
+        if (!conn) {
                 CERROR("cannot create client\n");
                 RETURN(-EINVAL);
         }
@@ -243,7 +263,7 @@ static int request_ioctl(struct inode *inode, struct file *file,
         switch (cmd) {
         case IOC_REQUEST_GETATTR: {
                 CERROR("-- getting attr for ino %lu\n", arg);
-                err = mdc_getattr(&cl, arg, S_IFDIR, ~0, &request);
+                err = mdc_getattr(&cl, conn, arg, S_IFDIR, ~0, &request);
                 CERROR("-- done err %d\n", err);
 
                 GOTO(out, err);
@@ -254,10 +274,10 @@ static int request_ioctl(struct inode *inode, struct file *file,
                 OBD_ALLOC(buf, PAGE_SIZE);
                 if (!buf) {
                         err = -ENOMEM;
-                        break;
+                        GOTO(out, err);
                 }
                 CERROR("-- readpage 0 for ino %lu\n", arg);
-                err = mdc_readpage(&cl, arg, S_IFDIR, 0, buf, &request);
+                err = mdc_readpage(&cl, conn, arg, S_IFDIR, 0, buf, &request);
                 CERROR("-- done err %d\n", err);
                 OBD_FREE(buf, PAGE_SIZE);
 
@@ -274,7 +294,7 @@ static int request_ioctl(struct inode *inode, struct file *file,
                 iattr.ia_atime = 0;
                 iattr.ia_valid = ATTR_MODE | ATTR_ATIME;
 
-                err = mdc_setattr(&cl, &inode, &iattr, &request);
+                err = mdc_setattr(&cl, conn, &inode, &iattr, &request);
                 CERROR("-- done err %d\n", err);
 
                 GOTO(out, err);
@@ -290,7 +310,7 @@ static int request_ioctl(struct inode *inode, struct file *file,
                 iattr.ia_atime = 0;
                 iattr.ia_valid = ATTR_MODE | ATTR_ATIME;
 
-                err = mdc_create(&cl, &inode,
+                err = mdc_create(&cl, conn, &inode,
                                  "foofile", strlen("foofile"),
                                  NULL, 0, 0100707, 47114711,
                                  11, 47, 0, &request);
@@ -302,28 +322,32 @@ static int request_ioctl(struct inode *inode, struct file *file,
         case IOC_REQUEST_OPEN: {
                 __u64 fh, ino;
                 copy_from_user(&ino, (__u64 *)arg, sizeof(ino));
-                CERROR("-- opening ino %llu\n", ino);
-                err = mdc_open(&cl, ino, S_IFDIR, O_RDONLY, &fh, &request);
+                CERROR("-- opening ino %llu\n", (unsigned long long)ino);
+                err = mdc_open(&cl, conn, ino, S_IFDIR, O_RDONLY, &fh,
+                               &request);
                 copy_to_user((__u64 *)arg, &fh, sizeof(fh));
-                CERROR("-- done err %d (fh=%Lu)\n", err, fh);
+                CERROR("-- done err %d (fh=%Lu)\n", err,
+                       (unsigned long long)fh);
 
                 GOTO(out, err);
         }
 
         case IOC_REQUEST_CLOSE: {
                 CERROR("-- closing ino 2, filehandle %lu\n", arg);
-                err = mdc_close(&cl, 2, S_IFDIR, arg, &request);
+                err = mdc_close(&cl, conn, 2, S_IFDIR, arg, &request);
                 CERROR("-- done err %d\n", err);
 
                 GOTO(out, err);
         }
 
         default:
-                RETURN(-EINVAL);
+                GOTO(out, err = -EINVAL);
         }
 
  out:
         ptlrpc_free_req(request);
+        ptlrpc_put_connection(conn);
+        ptlrpc_cleanup_client(&cl);
 
         RETURN(err);
 }
@@ -354,11 +378,12 @@ MODULE_AUTHOR("Peter J. Braam <braam@clusterfs.com>");
 MODULE_DESCRIPTION("Lustre MDS Request Tester v1.0");
 MODULE_LICENSE("GPL");
 
+EXPORT_SYMBOL(mdc_connect);
+EXPORT_SYMBOL(mdc_getattr);
 EXPORT_SYMBOL(mdc_create);
 EXPORT_SYMBOL(mdc_unlink);
 EXPORT_SYMBOL(mdc_rename);
 EXPORT_SYMBOL(mdc_link);
-EXPORT_SYMBOL(mdc_getattr);
 EXPORT_SYMBOL(mdc_readpage);
 EXPORT_SYMBOL(mdc_setattr);
 EXPORT_SYMBOL(mdc_close);