-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * GPL HEADER START
*
- * Copyright (C) 2001-2003 Cluster File Systems, Inc.
- * Author: Andreas Dilger <adilger@clusterfs.com>
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * This file is part of Lustre, http://www.lustre.org.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
*
- * Lustre is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
*
- * Lustre is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
*
- * You should have received a copy of the GNU General Public License
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
*
- * remote api for llog - server side
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2013, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * lustre/ptlrpc/llog_server.c
+ *
+ * remote api for llog - server side
*
+ * Author: Andreas Dilger <adilger@clusterfs.com>
*/
#define DEBUG_SUBSYSTEM S_LOG
-#ifndef EXPORT_SYMTAB
-#define EXPORT_SYMTAB
+#ifndef __KERNEL__
+#include <liblustre.h>
#endif
-#include <linux/fs.h>
-#include <linux/obd_class.h>
-#include <linux/lustre_log.h>
-#include <linux/lustre_net.h>
-#include <portals/list.h>
+#include <obd_class.h>
+#include <lu_target.h>
+#include <lustre_log.h>
+#include <lustre_net.h>
-int llog_origin_handle_create(struct ptlrpc_request *req)
+#if defined(__KERNEL__) && defined(LUSTRE_LOG_SERVER)
+static int llog_origin_close(const struct lu_env *env, struct llog_handle *lgh)
{
- struct obd_export *exp = req->rq_export;
- struct obd_device *obd = exp->exp_obd;
- struct obd_device *disk_obd;
- struct llog_handle *loghandle;
- struct llogd_body *body;
- struct obd_run_ctxt saved;
- struct llog_logid *logid = NULL;
- struct llog_ctxt *ctxt;
- char * name = NULL;
- int size = sizeof (*body);
- int rc, rc2;
- ENTRY;
-
- body = lustre_swab_reqbuf(req, 0, sizeof(*body),
- lustre_swab_llogd_body);
- if (body == NULL) {
- CERROR ("Can't unpack llogd_body\n");
- GOTO(out, rc =-EFAULT);
- }
-
- if (body->lgd_logid.lgl_oid > 0)
- logid = &body->lgd_logid;
-
- if (req->rq_reqmsg->bufcount > 1) {
- name = lustre_msg_string(req->rq_reqmsg, 1, 0);
- if (name == NULL) {
- CERROR("Can't unpack name\n");
- GOTO(out, rc = -EFAULT);
- }
- }
-
- ctxt = llog_get_context(obd, body->lgd_ctxt_idx);
- LASSERT(ctxt != NULL);
- disk_obd = ctxt->loc_exp->exp_obd;
- push_ctxt(&saved, &disk_obd->obd_ctxt, NULL);
-
- rc = llog_create(ctxt, &loghandle, logid, name);
- if (rc)
- GOTO(out_pop, rc);
-
- rc = lustre_pack_reply(req, 1, &size, NULL);
- if (rc)
- GOTO(out_close, rc = -ENOMEM);
-
- body = lustre_msg_buf(req->rq_repmsg, 0, sizeof (*body));
- body->lgd_logid = loghandle->lgh_id;
+ if (lgh->lgh_hdr != NULL && lgh->lgh_hdr->llh_flags & LLOG_F_IS_CAT)
+ return llog_cat_close(env, lgh);
+ else
+ return llog_close(env, lgh);
+}
-out_close:
- rc2 = llog_close(loghandle);
- if (!rc)
- rc = rc2;
-out_pop:
- pop_ctxt(&saved, &disk_obd->obd_ctxt, NULL);
-out:
- RETURN(rc);
+/* Only open is supported, no new llog can be created remotely */
+int llog_origin_handle_open(struct ptlrpc_request *req)
+{
+ struct obd_export *exp = req->rq_export;
+ struct obd_device *obd = exp->exp_obd;
+ struct llog_handle *loghandle;
+ struct llogd_body *body;
+ struct llog_logid *logid = NULL;
+ struct llog_ctxt *ctxt;
+ char *name = NULL;
+ int rc;
+
+ ENTRY;
+
+ body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_BODY);
+ if (body == NULL)
+ RETURN(err_serious(-EFAULT));
+
+ rc = req_capsule_server_pack(&req->rq_pill);
+ if (rc)
+ RETURN(err_serious(-ENOMEM));
+
+ if (ostid_id(&body->lgd_logid.lgl_oi) > 0)
+ logid = &body->lgd_logid;
+
+ if (req_capsule_field_present(&req->rq_pill, &RMF_NAME, RCL_CLIENT)) {
+ name = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
+ if (name == NULL)
+ RETURN(-EFAULT);
+ CDEBUG(D_INFO, "%s: opening log %s\n", obd->obd_name, name);
+ }
+
+ ctxt = llog_get_context(obd, body->lgd_ctxt_idx);
+ if (ctxt == NULL) {
+ CDEBUG(D_WARNING, "%s: no ctxt. group=%p idx=%d name=%s\n",
+ obd->obd_name, &obd->obd_olg, body->lgd_ctxt_idx, name);
+ RETURN(-ENODEV);
+ }
+
+ rc = llog_open(req->rq_svc_thread->t_env, ctxt, &loghandle, logid,
+ name, LLOG_OPEN_EXISTS);
+ if (rc)
+ GOTO(out_ctxt, rc);
+
+ body = req_capsule_server_get(&req->rq_pill, &RMF_LLOGD_BODY);
+ body->lgd_logid = loghandle->lgh_id;
+
+ llog_origin_close(req->rq_svc_thread->t_env, loghandle);
+ EXIT;
+out_ctxt:
+ llog_ctxt_put(ctxt);
+ return rc;
+}
+EXPORT_SYMBOL(llog_origin_handle_open);
+
+int llog_origin_handle_destroy(struct ptlrpc_request *req)
+{
+ struct llogd_body *body;
+ struct llog_logid *logid = NULL;
+ struct llog_ctxt *ctxt;
+ int rc;
+
+ ENTRY;
+
+ body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_BODY);
+ if (body == NULL)
+ RETURN(err_serious(-EFAULT));
+
+ rc = req_capsule_server_pack(&req->rq_pill);
+ if (rc < 0)
+ RETURN(err_serious(-ENOMEM));
+
+ if (ostid_id(&body->lgd_logid.lgl_oi) > 0)
+ logid = &body->lgd_logid;
+
+ if (!(body->lgd_llh_flags & LLOG_F_IS_PLAIN))
+ CERROR("%s: wrong llog flags %x\n",
+ req->rq_export->exp_obd->obd_name, body->lgd_llh_flags);
+
+ ctxt = llog_get_context(req->rq_export->exp_obd, body->lgd_ctxt_idx);
+ if (ctxt == NULL)
+ RETURN(-ENODEV);
+
+ rc = llog_erase(req->rq_svc_thread->t_env, ctxt, logid, NULL);
+ llog_ctxt_put(ctxt);
+ RETURN(rc);
}
+EXPORT_SYMBOL(llog_origin_handle_destroy);
int llog_origin_handle_next_block(struct ptlrpc_request *req)
{
- struct obd_export *exp = req->rq_export;
- struct obd_device *obd = exp->exp_obd;
- struct obd_device *disk_obd;
- struct llog_handle *loghandle;
- struct llogd_body *body;
- struct obd_run_ctxt saved;
- struct llog_ctxt *ctxt;
- __u32 flags;
- __u8 *buf;
- void * ptr;
- int size[] = {sizeof (*body),
- LLOG_CHUNK_SIZE};
- int rc, rc2;
- ENTRY;
-
- body = lustre_swab_reqbuf(req, 0, sizeof(*body),
- lustre_swab_llogd_body);
- if (body == NULL) {
- CERROR ("Can't unpack llogd_body\n");
- GOTO(out, rc =-EFAULT);
- }
-
- OBD_ALLOC(buf, LLOG_CHUNK_SIZE);
- if (!buf)
- GOTO(out, rc = -ENOMEM);
-
- ctxt = llog_get_context(obd, body->lgd_ctxt_idx);
- LASSERT(ctxt != NULL);
- disk_obd = ctxt->loc_exp->exp_obd;
- push_ctxt(&saved, &disk_obd->obd_ctxt, NULL);
-
- rc = llog_create(ctxt, &loghandle, &body->lgd_logid, NULL);
- if (rc)
- GOTO(out_pop, rc);
-
- flags = body->lgd_llh_flags;
- rc = llog_init_handle(loghandle, flags, NULL);
- if (rc)
- GOTO(out_close, rc);
-
- memset(buf, 0, LLOG_CHUNK_SIZE);
- rc = llog_next_block(loghandle, &body->lgd_saved_index,
- body->lgd_index,
- &body->lgd_cur_offset, buf, LLOG_CHUNK_SIZE);
- if (rc)
- GOTO(out_close, rc);
-
-
- rc = lustre_pack_reply(req, 2, size, NULL);
- if (rc)
- GOTO(out_close, rc = -ENOMEM);
-
- ptr = lustre_msg_buf(req->rq_repmsg, 0, sizeof (body));
- memcpy(ptr, body, sizeof(*body));
-
- ptr = lustre_msg_buf(req->rq_repmsg, 1, LLOG_CHUNK_SIZE);
- memcpy(ptr, buf, LLOG_CHUNK_SIZE);
+ struct llog_handle *loghandle;
+ struct llogd_body *body;
+ struct llogd_body *repbody;
+ struct llog_ctxt *ctxt;
+ __u32 flags;
+ void *ptr;
+ int rc;
+
+ ENTRY;
+
+ body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_BODY);
+ if (body == NULL)
+ RETURN(err_serious(-EFAULT));
+
+ req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_SERVER,
+ LLOG_CHUNK_SIZE);
+ rc = req_capsule_server_pack(&req->rq_pill);
+ if (rc)
+ RETURN(err_serious(-ENOMEM));
+
+ ctxt = llog_get_context(req->rq_export->exp_obd, body->lgd_ctxt_idx);
+ if (ctxt == NULL)
+ RETURN(-ENODEV);
+
+ rc = llog_open(req->rq_svc_thread->t_env, ctxt, &loghandle,
+ &body->lgd_logid, NULL, LLOG_OPEN_EXISTS);
+ if (rc)
+ GOTO(out_ctxt, rc);
+
+ flags = body->lgd_llh_flags;
+ rc = llog_init_handle(req->rq_svc_thread->t_env, loghandle, flags,
+ NULL);
+ if (rc)
+ GOTO(out_close, rc);
+
+ repbody = req_capsule_server_get(&req->rq_pill, &RMF_LLOGD_BODY);
+ *repbody = *body;
+
+ ptr = req_capsule_server_get(&req->rq_pill, &RMF_EADATA);
+ rc = llog_next_block(req->rq_svc_thread->t_env, loghandle,
+ &repbody->lgd_saved_index, repbody->lgd_index,
+ &repbody->lgd_cur_offset, ptr, LLOG_CHUNK_SIZE);
+ if (rc)
+ GOTO(out_close, rc);
+ EXIT;
+out_close:
+ llog_origin_close(req->rq_svc_thread->t_env, loghandle);
+out_ctxt:
+ llog_ctxt_put(ctxt);
+ return rc;
+}
+EXPORT_SYMBOL(llog_origin_handle_next_block);
+int llog_origin_handle_prev_block(struct ptlrpc_request *req)
+{
+ struct llog_handle *loghandle;
+ struct llogd_body *body;
+ struct llogd_body *repbody;
+ struct llog_ctxt *ctxt;
+ __u32 flags;
+ void *ptr;
+ int rc;
+
+ ENTRY;
+
+ body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_BODY);
+ if (body == NULL)
+ RETURN(err_serious(-EFAULT));
+
+ req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_SERVER,
+ LLOG_CHUNK_SIZE);
+ rc = req_capsule_server_pack(&req->rq_pill);
+ if (rc)
+ RETURN(err_serious(-ENOMEM));
+
+ ctxt = llog_get_context(req->rq_export->exp_obd, body->lgd_ctxt_idx);
+ if (ctxt == NULL)
+ RETURN(-ENODEV);
+
+ rc = llog_open(req->rq_svc_thread->t_env, ctxt, &loghandle,
+ &body->lgd_logid, NULL, LLOG_OPEN_EXISTS);
+ if (rc)
+ GOTO(out_ctxt, rc);
+
+ flags = body->lgd_llh_flags;
+ rc = llog_init_handle(req->rq_svc_thread->t_env, loghandle, flags,
+ NULL);
+ if (rc)
+ GOTO(out_close, rc);
+
+ repbody = req_capsule_server_get(&req->rq_pill, &RMF_LLOGD_BODY);
+ *repbody = *body;
+
+ ptr = req_capsule_server_get(&req->rq_pill, &RMF_EADATA);
+ rc = llog_prev_block(req->rq_svc_thread->t_env, loghandle,
+ body->lgd_index, ptr, LLOG_CHUNK_SIZE);
+ if (rc)
+ GOTO(out_close, rc);
+
+ EXIT;
out_close:
- rc2 = llog_close(loghandle);
- if (!rc)
- rc = rc2;
-
-out_pop:
- pop_ctxt(&saved, &disk_obd->obd_ctxt, NULL);
- OBD_FREE(buf, LLOG_CHUNK_SIZE);
-out:
- RETURN(rc);
+ llog_origin_close(req->rq_svc_thread->t_env, loghandle);
+out_ctxt:
+ llog_ctxt_put(ctxt);
+ return rc;
}
+EXPORT_SYMBOL(llog_origin_handle_prev_block);
int llog_origin_handle_read_header(struct ptlrpc_request *req)
{
- struct obd_export *exp = req->rq_export;
- struct obd_device *obd = exp->exp_obd;
- struct obd_device *disk_obd;
- struct llog_handle *loghandle;
- struct llogd_body *body;
- struct llog_log_hdr *hdr;
- struct obd_run_ctxt saved;
- struct llog_ctxt *ctxt;
- __u32 flags;
- __u8 *buf;
- int size[] = {sizeof (*hdr)};
- int rc, rc2;
- ENTRY;
-
- body = lustre_swab_reqbuf(req, 0, sizeof(*body),
- lustre_swab_llogd_body);
- if (body == NULL) {
- CERROR ("Can't unpack llogd_body\n");
- GOTO(out, rc =-EFAULT);
- }
-
- OBD_ALLOC(buf, LLOG_CHUNK_SIZE);
- if (!buf)
- GOTO(out, rc = -ENOMEM);
-
- ctxt = llog_get_context(obd, body->lgd_ctxt_idx);
- LASSERT(ctxt != NULL);
- disk_obd = ctxt->loc_exp->exp_obd;
- push_ctxt(&saved, &disk_obd->obd_ctxt, NULL);
-
- rc = llog_create(ctxt, &loghandle, &body->lgd_logid, NULL);
- if (rc)
- GOTO(out_pop, rc);
-
- /* init_handle reads the header */
- flags = body->lgd_llh_flags;
- rc = llog_init_handle(loghandle, flags, NULL);
- if (rc)
- GOTO(out_close, rc);
-
-
- rc = lustre_pack_reply(req, 1, size, NULL);
- if (rc)
- GOTO(out_close, rc = -ENOMEM);
-
- hdr = lustre_msg_buf(req->rq_repmsg, 0, sizeof (*hdr));
- memcpy(hdr, loghandle->lgh_hdr, sizeof(*hdr));
-
+ struct llog_handle *loghandle;
+ struct llogd_body *body;
+ struct llog_log_hdr *hdr;
+ struct llog_ctxt *ctxt;
+ __u32 flags;
+ int rc;
+
+ ENTRY;
+
+ body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_BODY);
+ if (body == NULL)
+ RETURN(err_serious(-EFAULT));
+
+ rc = req_capsule_server_pack(&req->rq_pill);
+ if (rc)
+ RETURN(err_serious(-ENOMEM));
+
+ ctxt = llog_get_context(req->rq_export->exp_obd, body->lgd_ctxt_idx);
+ if (ctxt == NULL)
+ RETURN(-ENODEV);
+
+ rc = llog_open(req->rq_svc_thread->t_env, ctxt, &loghandle,
+ &body->lgd_logid, NULL, LLOG_OPEN_EXISTS);
+ if (rc)
+ GOTO(out_ctxt, rc);
+
+ /*
+ * llog_init_handle() reads the llog header
+ */
+ flags = body->lgd_llh_flags;
+ rc = llog_init_handle(req->rq_svc_thread->t_env, loghandle, flags,
+ NULL);
+ if (rc)
+ GOTO(out_close, rc);
+ flags = loghandle->lgh_hdr->llh_flags;
+
+ hdr = req_capsule_server_get(&req->rq_pill, &RMF_LLOG_LOG_HDR);
+ *hdr = *loghandle->lgh_hdr;
+ EXIT;
out_close:
- rc2 = llog_close(loghandle);
- if (!rc)
- rc = rc2;
-
-out_pop:
- pop_ctxt(&saved, &disk_obd->obd_ctxt, NULL);
- OBD_FREE(buf, LLOG_CHUNK_SIZE);
-
-out:
- RETURN(rc);
+ llog_origin_close(req->rq_svc_thread->t_env, loghandle);
+out_ctxt:
+ llog_ctxt_put(ctxt);
+ return rc;
}
+EXPORT_SYMBOL(llog_origin_handle_read_header);
int llog_origin_handle_close(struct ptlrpc_request *req)
{
- int rc;
+ int rc;
+
+ ENTRY;
- rc = 0;
+ rc = req_capsule_server_pack(&req->rq_pill);
+ if (rc)
+ RETURN(err_serious(-ENOMEM));
+ RETURN(0);
+}
+EXPORT_SYMBOL(llog_origin_handle_close);
- RETURN(rc);
+#else /* !__KERNEL__ */
+int llog_origin_handle_open(struct ptlrpc_request *req)
+{
+ LBUG();
+ return 0;
+}
+
+int llog_origin_handle_destroy(struct ptlrpc_request *req)
+{
+ LBUG();
+ return 0;
}
-#ifdef ENABLE_ORPHANS
-int llog_origin_handle_cancel(struct ptlrpc_request *req)
+int llog_origin_handle_next_block(struct ptlrpc_request *req)
+{
+ LBUG();
+ return 0;
+}
+int llog_origin_handle_prev_block(struct ptlrpc_request *req)
+{
+ LBUG();
+ return 0;
+}
+int llog_origin_handle_read_header(struct ptlrpc_request *req)
+{
+ LBUG();
+ return 0;
+}
+int llog_origin_handle_close(struct ptlrpc_request *req)
{
- struct obd_device *obd = req->rq_export->exp_obd;
- struct obd_device *disk_obd;
- struct llog_cookie *logcookies;
- struct llog_ctxt *ctxt;
- int num_cookies, rc = 0;
- struct obd_run_ctxt saved;
- struct llog_handle *cathandle;
- ENTRY;
-
- logcookies = lustre_msg_buf(req->rq_reqmsg, 0, sizeof(*logcookies));
- num_cookies = req->rq_reqmsg->buflens[0]/sizeof(*logcookies);
- if (logcookies == NULL || num_cookies == 0) {
- DEBUG_REQ(D_HA, req, "no cookies sent");
- RETURN(-EFAULT);
- }
-
- ctxt = llog_get_context(obd, logcookies->lgc_subsys);
- if (ctxt == NULL) {
- CWARN("llog subsys not setup or already cleanup\n");
- RETURN(-ENOENT);
- }
- down(&ctxt->loc_sem);
- disk_obd = ctxt->loc_exp->exp_obd;
- cathandle = ctxt->loc_handle;
- LASSERT(cathandle);
-
- push_ctxt(&saved, &disk_obd->obd_ctxt, NULL);
- rc = llog_cat_cancel_records(cathandle, num_cookies, logcookies);
- if (rc)
- CERROR("cancel %d llog-records failed: %d\n", num_cookies, rc);
- else
- CWARN("cancel %d llog-records\n", num_cookies);
-
- pop_ctxt(&saved, &disk_obd->obd_ctxt, NULL);
- up(&ctxt->loc_sem);
-
- RETURN(rc);
+ LBUG();
+ return 0;
}
-EXPORT_SYMBOL(llog_origin_handle_cancel);
#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff