*
* 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
- *
- * 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.
+ * http://www.gnu.org/licenses/gpl-2.0.html
*
* GPL HEADER END
*/
* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2012, 2014, Intel Corporation.
+ * Copyright (c) 2012, 2015, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#define DEBUG_SUBSYSTEM S_LOG
+#include <linux/list.h>
#include <libcfs/libcfs.h>
#include <obd_class.h>
#include <lustre_log.h>
#include <lustre_net.h>
-#include <libcfs/list.h>
#define LLOG_CLIENT_ENTRY(ctxt, imp) do { \
- mutex_lock(&ctxt->loc_mutex); \
- if (ctxt->loc_imp) { \
- imp = class_import_get(ctxt->loc_imp); \
- } else { \
- CERROR("ctxt->loc_imp == NULL for context idx %d." \
- "Unable to complete MDS/OSS recovery," \
- "but I'll try again next time. Not fatal.\n", \
- ctxt->loc_idx); \
- imp = NULL; \
- mutex_unlock(&ctxt->loc_mutex); \
- return (-EINVAL); \
- } \
- mutex_unlock(&ctxt->loc_mutex); \
-} while(0)
+ mutex_lock(&ctxt->loc_mutex); \
+ if (ctxt->loc_imp) { \
+ imp = class_import_get(ctxt->loc_imp); \
+ } else { \
+ CERROR("ctxt->loc_imp == NULL for context idx %d." \
+ "Unable to complete MDS/OSS recovery," \
+ "but I'll try again next time. Not fatal.\n", \
+ ctxt->loc_idx); \
+ imp = NULL; \
+ mutex_unlock(&ctxt->loc_mutex); \
+ return -EINVAL; \
+ } \
+ mutex_unlock(&ctxt->loc_mutex); \
+} while (0)
#define LLOG_CLIENT_EXIT(ctxt, imp) do { \
- mutex_lock(&ctxt->loc_mutex); \
- if (ctxt->loc_imp != imp) \
- CWARN("loc_imp has changed from %p to %p\n", \
- ctxt->loc_imp, imp); \
- class_import_put(imp); \
- mutex_unlock(&ctxt->loc_mutex); \
-} while(0)
-
-/* This is a callback from the llog_* functions.
- * Assumes caller has already pushed us into the kernel context. */
+ mutex_lock(&ctxt->loc_mutex); \
+ if (ctxt->loc_imp != imp) \
+ CWARN("loc_imp has changed from %p to %p\n", \
+ ctxt->loc_imp, imp); \
+ class_import_put(imp); \
+ mutex_unlock(&ctxt->loc_mutex); \
+} while (0)
+
+/*
+ * This is a callback from the llog_* functions.
+ * Assumes caller has already pushed us into the kernel context.
+ */
static int llog_client_open(const struct lu_env *env,
struct llog_handle *lgh, struct llog_logid *logid,
char *name, enum llog_open_param open_param)
{
- struct obd_import *imp;
- struct llogd_body *body;
- struct llog_ctxt *ctxt = lgh->lgh_ctxt;
- struct ptlrpc_request *req = NULL;
- int rc;
- ENTRY;
+ struct obd_import *imp;
+ struct llogd_body *body;
+ struct llog_ctxt *ctxt = lgh->lgh_ctxt;
+ struct ptlrpc_request *req = NULL;
+ int rc;
+
+ ENTRY;
- LLOG_CLIENT_ENTRY(ctxt, imp);
+ LLOG_CLIENT_ENTRY(ctxt, imp);
/* client cannot create llog */
LASSERTF(open_param != LLOG_OPEN_NEW, "%#x\n", open_param);
LASSERT(lgh);
req = ptlrpc_request_alloc(imp, &RQF_LLOG_ORIGIN_HANDLE_CREATE);
- if (req == NULL)
+ if (!req)
GOTO(out, rc = -ENOMEM);
- if (name)
- req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
- strlen(name) + 1);
+ if (name)
+ req_capsule_set_size(&req->rq_pill, &RMF_NAME, RCL_CLIENT,
+ strlen(name) + 1);
- rc = ptlrpc_request_pack(req, LUSTRE_LOG_VERSION,
- LLOG_ORIGIN_HANDLE_CREATE);
- if (rc) {
- ptlrpc_request_free(req);
- req = NULL;
+ rc = ptlrpc_request_pack(req, LUSTRE_LOG_VERSION,
+ LLOG_ORIGIN_HANDLE_CREATE);
+ if (rc) {
+ ptlrpc_request_free(req);
+ req = NULL;
GOTO(out, rc);
- }
- ptlrpc_request_set_replen(req);
-
- body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_BODY);
- if (logid)
- body->lgd_logid = *logid;
- body->lgd_ctxt_idx = ctxt->loc_idx - 1;
-
- if (name) {
- char *tmp;
- tmp = req_capsule_client_sized_get(&req->rq_pill, &RMF_NAME,
- strlen(name) + 1);
- LASSERT(tmp);
- strcpy(tmp, name);
- }
-
- rc = ptlrpc_queue_wait(req);
- if (rc)
+ }
+ ptlrpc_request_set_replen(req);
+
+ body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_BODY);
+ if (logid)
+ body->lgd_logid = *logid;
+ body->lgd_ctxt_idx = ctxt->loc_idx - 1;
+
+ if (name) {
+ char *tmp;
+
+ tmp = req_capsule_client_sized_get(&req->rq_pill, &RMF_NAME,
+ strlen(name) + 1);
+ LASSERT(tmp);
+ strcpy(tmp, name);
+ }
+
+ rc = ptlrpc_queue_wait(req);
+ if (rc)
GOTO(out, rc);
body = req_capsule_server_get(&req->rq_pill, &RMF_LLOGD_BODY);
- if (body == NULL)
+ if (!body)
GOTO(out, rc = -EFAULT);
lgh->lgh_id = body->lgd_logid;
return rc;
}
-static int llog_client_destroy(const struct lu_env *env,
- struct llog_handle *loghandle)
-{
- struct obd_import *imp;
- struct ptlrpc_request *req = NULL;
- struct llogd_body *body;
- int rc;
- ENTRY;
-
- LLOG_CLIENT_ENTRY(loghandle->lgh_ctxt, imp);
- req = ptlrpc_request_alloc_pack(imp, &RQF_LLOG_ORIGIN_HANDLE_DESTROY,
- LUSTRE_LOG_VERSION,
- LLOG_ORIGIN_HANDLE_DESTROY);
- if (req == NULL)
- GOTO(err_exit, rc =-ENOMEM);
-
- body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_BODY);
- body->lgd_logid = loghandle->lgh_id;
- body->lgd_llh_flags = loghandle->lgh_hdr->llh_flags;
-
- if (!(body->lgd_llh_flags & LLOG_F_IS_PLAIN))
- CERROR("%s: wrong llog flags %x\n", imp->imp_obd->obd_name,
- body->lgd_llh_flags);
-
- ptlrpc_request_set_replen(req);
- rc = ptlrpc_queue_wait(req);
-
- ptlrpc_req_finished(req);
-err_exit:
- LLOG_CLIENT_EXIT(loghandle->lgh_ctxt, imp);
- RETURN(rc);
-}
-
-
static int llog_client_next_block(const struct lu_env *env,
struct llog_handle *loghandle,
int *cur_idx, int next_idx,
__u64 *cur_offset, void *buf, int len)
{
- struct obd_import *imp;
- struct ptlrpc_request *req = NULL;
- struct llogd_body *body;
- void *ptr;
- int rc;
- ENTRY;
-
- LLOG_CLIENT_ENTRY(loghandle->lgh_ctxt, imp);
- req = ptlrpc_request_alloc_pack(imp, &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK,
- LUSTRE_LOG_VERSION,
- LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
- if (req == NULL)
- GOTO(err_exit, rc =-ENOMEM);
-
- body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_BODY);
- body->lgd_logid = loghandle->lgh_id;
- body->lgd_ctxt_idx = loghandle->lgh_ctxt->loc_idx - 1;
- body->lgd_llh_flags = loghandle->lgh_hdr->llh_flags;
- body->lgd_index = next_idx;
- body->lgd_saved_index = *cur_idx;
- body->lgd_len = len;
- body->lgd_cur_offset = *cur_offset;
-
- req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_SERVER, len);
- ptlrpc_request_set_replen(req);
- rc = ptlrpc_queue_wait(req);
- if (rc)
- GOTO(out, rc);
-
- body = req_capsule_server_get(&req->rq_pill, &RMF_LLOGD_BODY);
- if (body == NULL)
- GOTO(out, rc =-EFAULT);
-
- /* The log records are swabbed as they are processed */
- ptr = req_capsule_server_get(&req->rq_pill, &RMF_EADATA);
- if (ptr == NULL)
- GOTO(out, rc =-EFAULT);
-
- *cur_idx = body->lgd_saved_index;
- *cur_offset = body->lgd_cur_offset;
-
- memcpy(buf, ptr, len);
- EXIT;
+ struct obd_import *imp;
+ struct ptlrpc_request *req = NULL;
+ struct llogd_body *body;
+ void *ptr;
+ int rc;
+
+ ENTRY;
+
+ LLOG_CLIENT_ENTRY(loghandle->lgh_ctxt, imp);
+ req = ptlrpc_request_alloc_pack(imp, &RQF_LLOG_ORIGIN_HANDLE_NEXT_BLOCK,
+ LUSTRE_LOG_VERSION,
+ LLOG_ORIGIN_HANDLE_NEXT_BLOCK);
+ if (!req)
+ GOTO(err_exit, rc = -ENOMEM);
+
+ body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_BODY);
+ body->lgd_logid = loghandle->lgh_id;
+ body->lgd_ctxt_idx = loghandle->lgh_ctxt->loc_idx - 1;
+ body->lgd_llh_flags = loghandle->lgh_hdr->llh_flags;
+ body->lgd_index = next_idx;
+ body->lgd_saved_index = *cur_idx;
+ body->lgd_len = len;
+ body->lgd_cur_offset = *cur_offset;
+
+ req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_SERVER, len);
+ ptlrpc_request_set_replen(req);
+ rc = ptlrpc_queue_wait(req);
+ /*
+ * -EIO has a special meaning here. If llog_osd_next_block()
+ * reaches the end of the log without finding the desired
+ * record then it updates *cur_offset and *cur_idx and returns
+ * -EIO. In llog_process_thread() we use this to detect
+ * EOF. But we must be careful to distinguish between -EIO
+ * coming from llog_osd_next_block() and -EIO coming from
+ * ptlrpc or below.
+ */
+ if (rc == -EIO) {
+ if (!req->rq_repmsg ||
+ lustre_msg_get_status(req->rq_repmsg) != -EIO)
+ GOTO(out, rc);
+ } else if (rc < 0) {
+ GOTO(out, rc);
+ }
+
+ body = req_capsule_server_get(&req->rq_pill, &RMF_LLOGD_BODY);
+ if (!body)
+ GOTO(out, rc = -EFAULT);
+
+ *cur_idx = body->lgd_saved_index;
+ *cur_offset = body->lgd_cur_offset;
+
+ if (rc < 0)
+ GOTO(out, rc);
+
+ /* The log records are swabbed as they are processed */
+ ptr = req_capsule_server_get(&req->rq_pill, &RMF_EADATA);
+ if (!ptr)
+ GOTO(out, rc = -EFAULT);
+
+ memcpy(buf, ptr, len);
+ EXIT;
out:
- ptlrpc_req_finished(req);
+ ptlrpc_req_finished(req);
err_exit:
- LLOG_CLIENT_EXIT(loghandle->lgh_ctxt, imp);
- return rc;
+ LLOG_CLIENT_EXIT(loghandle->lgh_ctxt, imp);
+ return rc;
}
static int llog_client_prev_block(const struct lu_env *env,
struct llog_handle *loghandle,
int prev_idx, void *buf, int len)
{
- struct obd_import *imp;
- struct ptlrpc_request *req = NULL;
- struct llogd_body *body;
- void *ptr;
- int rc;
- ENTRY;
-
- LLOG_CLIENT_ENTRY(loghandle->lgh_ctxt, imp);
- req = ptlrpc_request_alloc_pack(imp, &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK,
- LUSTRE_LOG_VERSION,
- LLOG_ORIGIN_HANDLE_PREV_BLOCK);
- if (req == NULL)
- GOTO(err_exit, rc = -ENOMEM);
-
- body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_BODY);
- body->lgd_logid = loghandle->lgh_id;
- body->lgd_ctxt_idx = loghandle->lgh_ctxt->loc_idx - 1;
- body->lgd_llh_flags = loghandle->lgh_hdr->llh_flags;
- body->lgd_index = prev_idx;
- body->lgd_len = len;
-
- req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_SERVER, len);
- ptlrpc_request_set_replen(req);
-
- rc = ptlrpc_queue_wait(req);
- if (rc)
- GOTO(out, rc);
-
- body = req_capsule_server_get(&req->rq_pill, &RMF_LLOGD_BODY);
- if (body == NULL)
- GOTO(out, rc =-EFAULT);
-
- ptr = req_capsule_server_get(&req->rq_pill, &RMF_EADATA);
- if (ptr == NULL)
- GOTO(out, rc =-EFAULT);
-
- memcpy(buf, ptr, len);
- EXIT;
+ struct obd_import *imp;
+ struct ptlrpc_request *req = NULL;
+ struct llogd_body *body;
+ void *ptr;
+ int rc;
+
+ ENTRY;
+
+ LLOG_CLIENT_ENTRY(loghandle->lgh_ctxt, imp);
+ req = ptlrpc_request_alloc_pack(imp, &RQF_LLOG_ORIGIN_HANDLE_PREV_BLOCK,
+ LUSTRE_LOG_VERSION,
+ LLOG_ORIGIN_HANDLE_PREV_BLOCK);
+ if (!req)
+ GOTO(err_exit, rc = -ENOMEM);
+
+ body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_BODY);
+ body->lgd_logid = loghandle->lgh_id;
+ body->lgd_ctxt_idx = loghandle->lgh_ctxt->loc_idx - 1;
+ body->lgd_llh_flags = loghandle->lgh_hdr->llh_flags;
+ body->lgd_index = prev_idx;
+ body->lgd_len = len;
+
+ req_capsule_set_size(&req->rq_pill, &RMF_EADATA, RCL_SERVER, len);
+ ptlrpc_request_set_replen(req);
+
+ rc = ptlrpc_queue_wait(req);
+ if (rc)
+ GOTO(out, rc);
+
+ body = req_capsule_server_get(&req->rq_pill, &RMF_LLOGD_BODY);
+ if (!body)
+ GOTO(out, rc = -EFAULT);
+
+ ptr = req_capsule_server_get(&req->rq_pill, &RMF_EADATA);
+ if (!ptr)
+ GOTO(out, rc = -EFAULT);
+
+ memcpy(buf, ptr, len);
+ EXIT;
out:
- ptlrpc_req_finished(req);
+ ptlrpc_req_finished(req);
err_exit:
- LLOG_CLIENT_EXIT(loghandle->lgh_ctxt, imp);
- return rc;
+ LLOG_CLIENT_EXIT(loghandle->lgh_ctxt, imp);
+ return rc;
}
static int llog_client_read_header(const struct lu_env *env,
struct llog_handle *handle)
{
- struct obd_import *imp;
- struct ptlrpc_request *req = NULL;
- struct llogd_body *body;
- struct llog_log_hdr *hdr;
- struct llog_rec_hdr *llh_hdr;
- int rc;
- ENTRY;
-
- LLOG_CLIENT_ENTRY(handle->lgh_ctxt, imp);
- req = ptlrpc_request_alloc_pack(imp,&RQF_LLOG_ORIGIN_HANDLE_READ_HEADER,
- LUSTRE_LOG_VERSION,
- LLOG_ORIGIN_HANDLE_READ_HEADER);
- if (req == NULL)
- GOTO(err_exit, rc = -ENOMEM);
-
- body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_BODY);
- body->lgd_logid = handle->lgh_id;
- body->lgd_ctxt_idx = handle->lgh_ctxt->loc_idx - 1;
- body->lgd_llh_flags = handle->lgh_hdr->llh_flags;
-
- ptlrpc_request_set_replen(req);
- rc = ptlrpc_queue_wait(req);
- if (rc)
- GOTO(out, rc);
-
- hdr = req_capsule_server_get(&req->rq_pill, &RMF_LLOG_LOG_HDR);
- if (hdr == NULL)
- GOTO(out, rc =-EFAULT);
+ struct obd_import *imp;
+ struct ptlrpc_request *req = NULL;
+ struct llogd_body *body;
+ struct llog_log_hdr *hdr;
+ struct llog_rec_hdr *llh_hdr;
+ int rc;
+
+ ENTRY;
+
+ LLOG_CLIENT_ENTRY(handle->lgh_ctxt, imp);
+ req = ptlrpc_request_alloc_pack(imp,
+ &RQF_LLOG_ORIGIN_HANDLE_READ_HEADER,
+ LUSTRE_LOG_VERSION,
+ LLOG_ORIGIN_HANDLE_READ_HEADER);
+ if (!req)
+ GOTO(err_exit, rc = -ENOMEM);
+
+ body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_BODY);
+ body->lgd_logid = handle->lgh_id;
+ body->lgd_ctxt_idx = handle->lgh_ctxt->loc_idx - 1;
+ body->lgd_llh_flags = handle->lgh_hdr->llh_flags;
+
+ ptlrpc_request_set_replen(req);
+ rc = ptlrpc_queue_wait(req);
+ if (rc)
+ GOTO(out, rc);
+
+ hdr = req_capsule_server_get(&req->rq_pill, &RMF_LLOG_LOG_HDR);
+ if (!hdr)
+ GOTO(out, rc = -EFAULT);
if (handle->lgh_hdr_size < hdr->llh_hdr.lrh_len)
GOTO(out, rc = -EFAULT);
(llh_hdr->lrh_len & (llh_hdr->lrh_len - 1)) != 0 ||
llh_hdr->lrh_len < LLOG_MIN_CHUNK_SIZE ||
llh_hdr->lrh_len > handle->lgh_hdr_size) {
- CERROR("incorrectly sized log header: %#x, "
- "expecting %#x (power of two > 8192)\n",
+ CERROR("incorrectly sized log header: %#x, expecting %#x (power of two > 8192)\n",
llh_hdr->lrh_len,
LLOG_HDR_TAIL(handle->lgh_hdr)->lrt_len);
CERROR("you may need to re-run lconf --write_conf.\n");
}
EXIT;
out:
- ptlrpc_req_finished(req);
+ ptlrpc_req_finished(req);
err_exit:
- LLOG_CLIENT_EXIT(handle->lgh_ctxt, imp);
- return rc;
+ LLOG_CLIENT_EXIT(handle->lgh_ctxt, imp);
+ return rc;
}
static int llog_client_close(const struct lu_env *env,
struct llog_handle *handle)
{
- /* this doesn't call LLOG_ORIGIN_HANDLE_CLOSE because
- the servers all close the file at the end of every
- other LLOG_ RPC. */
- return(0);
+ /*
+ * this doesn't call LLOG_ORIGIN_HANDLE_CLOSE because
+ * the servers all close the file at the end of every
+ * other LLOG_ RPC.
+ */
+ return 0;
}
struct llog_operations llog_client_ops = {
.lop_prev_block = llog_client_prev_block,
.lop_read_header = llog_client_read_header,
.lop_open = llog_client_open,
- .lop_destroy = llog_client_destroy,
.lop_close = llog_client_close,
};
EXPORT_SYMBOL(llog_client_ops);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff