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LU-1302 llog: introduce llog_open
[fs/lustre-release.git] / lustre / ptlrpc / llog_server.c
index 27042a7..a4ea3f1 100644 (file)
@@ -1,6 +1,4 @@
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
  * GPL HEADER START
  *
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 
 #define DEBUG_SUBSYSTEM S_LOG
 
-#ifndef EXPORT_SYMTAB
-#define EXPORT_SYMTAB
-#endif
-
 #ifndef __KERNEL__
 #include <liblustre.h>
 #endif
 #include <obd_class.h>
 #include <lustre_log.h>
 #include <lustre_net.h>
-#include <libcfs/list.h>
 #include <lustre_fsfilt.h>
 
 #if defined(__KERNEL__) && defined(LUSTRE_LOG_SERVER)
+static int llog_origin_close(const struct lu_env *env, struct llog_handle *lgh)
+{
+       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);
+}
 
-int llog_origin_handle_create(struct ptlrpc_request *req)
+/* 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 obd_device    *disk_obd;
-        struct llog_handle   *loghandle;
-        struct llogd_body    *body;
-        struct lvfs_run_ctxt  saved;
-        struct llog_logid    *logid = NULL;
-        struct llog_ctxt     *ctxt;
-        char                 *name = NULL;
-        int                   rc, rc2;
-        ENTRY;
+       struct obd_export       *exp = req->rq_export;
+       struct obd_device       *obd = exp->exp_obd;
+       struct obd_device       *disk_obd;
+       struct lvfs_run_ctxt     saved;
+       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)
@@ -97,7 +99,8 @@ int llog_origin_handle_create(struct ptlrpc_request *req)
         disk_obd = ctxt->loc_exp->exp_obd;
         push_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
 
-        rc = llog_create(ctxt, &loghandle, logid, name);
+       rc = llog_open(req->rq_svc_thread->t_env, ctxt, &loghandle, logid,
+                      name, LLOG_OPEN_EXISTS);
         if (rc)
                 GOTO(out_pop, rc);
 
@@ -108,29 +111,26 @@ int llog_origin_handle_create(struct ptlrpc_request *req)
         body = req_capsule_server_get(&req->rq_pill, &RMF_LLOGD_BODY);
         body->lgd_logid = loghandle->lgh_id;
 
-        GOTO(out_close, rc);
+       EXIT;
 out_close:
-        rc2 = llog_close(loghandle);
-        if (!rc)
-                rc = rc2;
+       llog_origin_close(req->rq_svc_thread->t_env, loghandle);
 out_pop:
-        pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
-        llog_ctxt_put(ctxt);
-        return rc;
+       pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
+       llog_ctxt_put(ctxt);
+       return rc;
 }
+EXPORT_SYMBOL(llog_origin_handle_open);
 
 int llog_origin_handle_destroy(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 lvfs_run_ctxt  saved;
-        struct llog_logid    *logid = NULL;
-        struct llog_ctxt     *ctxt;
-        int                   rc;
-        ENTRY;
+       struct obd_device       *disk_obd;
+       struct lvfs_run_ctxt     saved;
+       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)
@@ -139,44 +139,29 @@ int llog_origin_handle_destroy(struct ptlrpc_request *req)
         if (body->lgd_logid.lgl_oid > 0)
                 logid = &body->lgd_logid;
 
-        ctxt = llog_get_context(obd, body->lgd_ctxt_idx);
-        if (ctxt == NULL)
-                RETURN(-ENODEV);
+       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);
 
-        disk_obd = ctxt->loc_exp->exp_obd;
-        push_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
+       ctxt = llog_get_context(req->rq_export->exp_obd, body->lgd_ctxt_idx);
+       if (ctxt == NULL)
+               RETURN(-ENODEV);
 
-        rc = llog_create(ctxt, &loghandle, logid, NULL);
-        if (rc)
-                GOTO(out_pop, rc);
+       disk_obd = ctxt->loc_exp->exp_obd;
+       push_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
 
-        rc = req_capsule_server_pack(&req->rq_pill);
-        if (rc)
-                GOTO(out_close, rc = -ENOMEM);
-
-        body = req_capsule_server_get(&req->rq_pill, &RMF_LLOGD_BODY);
-        body->lgd_logid = loghandle->lgh_id;
-        rc = llog_init_handle(loghandle, LLOG_F_IS_PLAIN, NULL);
-        if (rc)
-                GOTO(out_close, rc);
-        rc = llog_destroy(loghandle);
-        if (rc)
-                GOTO(out_close, rc);
-        llog_free_handle(loghandle);
-        GOTO(out_close, rc);
-out_close:
-        if (rc)
-                llog_close(loghandle);
-out_pop:
-        pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
-        llog_ctxt_put(ctxt);
-        return rc;
+       rc = req_capsule_server_pack(&req->rq_pill);
+       /* erase only if no error and logid is valid */
+       if (rc == 0)
+               rc = llog_erase(req->rq_svc_thread->t_env, ctxt, logid, NULL);
+       pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, 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;
@@ -184,38 +169,30 @@ int llog_origin_handle_next_block(struct ptlrpc_request *req)
         struct lvfs_run_ctxt saved;
         struct llog_ctxt    *ctxt;
         __u32                flags;
-        __u8                *buf;
         void                *ptr;
-        int                  rc, rc2;
+       int                  rc;
+
         ENTRY;
 
         body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_BODY);
         if (body == NULL)
                 RETURN(-EFAULT);
 
-        OBD_ALLOC(buf, LLOG_CHUNK_SIZE);
-        if (!buf)
-                RETURN(-ENOMEM);
-
-        ctxt = llog_get_context(obd, body->lgd_ctxt_idx);
-        if (ctxt == NULL)
-                GOTO(out_free, rc = -ENODEV);
-        disk_obd = ctxt->loc_exp->exp_obd;
-        push_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
+       ctxt = llog_get_context(req->rq_export->exp_obd, body->lgd_ctxt_idx);
+       if (ctxt == NULL)
+               RETURN(-ENODEV);
 
-        rc = llog_create(ctxt, &loghandle, &body->lgd_logid, NULL);
-        if (rc)
-                GOTO(out_pop, rc);
+       disk_obd = ctxt->loc_exp->exp_obd;
+       push_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
 
-        flags = body->lgd_llh_flags;
-        rc = llog_init_handle(loghandle, flags, NULL);
-        if (rc)
-                GOTO(out_close, rc);
+       rc = llog_open(req->rq_svc_thread->t_env, ctxt, &loghandle,
+                      &body->lgd_logid, NULL, LLOG_OPEN_EXISTS);
+       if (rc)
+               GOTO(out_pop, 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);
+       flags = body->lgd_llh_flags;
+       rc = llog_init_handle(req->rq_svc_thread->t_env, loghandle, flags,
+                             NULL);
         if (rc)
                 GOTO(out_close, rc);
 
@@ -229,24 +206,23 @@ int llog_origin_handle_next_block(struct ptlrpc_request *req)
         *repbody = *body;
 
         ptr = req_capsule_server_get(&req->rq_pill, &RMF_EADATA);
-        memcpy(ptr, buf, LLOG_CHUNK_SIZE);
-        GOTO(out_close, rc);
+       rc = llog_next_block(req->rq_svc_thread->t_env, loghandle,
+                            &body->lgd_saved_index, body->lgd_index,
+                            &body->lgd_cur_offset, ptr, LLOG_CHUNK_SIZE);
+       if (rc)
+               GOTO(out_close, rc);
+       EXIT;
 out_close:
-        rc2 = llog_close(loghandle);
-        if (!rc)
-                rc = rc2;
+       llog_origin_close(req->rq_svc_thread->t_env, loghandle);
 out_pop:
-        pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
-        llog_ctxt_put(ctxt);
-out_free:
-        OBD_FREE(buf, LLOG_CHUNK_SIZE);
-        return rc;
+       pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
+       llog_ctxt_put(ctxt);
+       return rc;
 }
+EXPORT_SYMBOL(llog_origin_handle_next_block);
 
 int llog_origin_handle_prev_block(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 llogd_body    *repbody;
@@ -254,38 +230,30 @@ int llog_origin_handle_prev_block(struct ptlrpc_request *req)
         struct lvfs_run_ctxt  saved;
         struct llog_ctxt     *ctxt;
         __u32                 flags;
-        __u8                 *buf;
         void                 *ptr;
-        int                   rc, rc2;
+       int                   rc;
+
         ENTRY;
 
         body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_BODY);
         if (body == NULL)
                 RETURN(-EFAULT);
 
-        OBD_ALLOC(buf, LLOG_CHUNK_SIZE);
-        if (!buf)
-                RETURN(-ENOMEM);
-
-        ctxt = llog_get_context(obd, body->lgd_ctxt_idx);
-        if (ctxt == NULL)
-                GOTO(out_free, rc = -ENODEV);
+       ctxt = llog_get_context(req->rq_export->exp_obd, body->lgd_ctxt_idx);
+       if (ctxt == NULL)
+               RETURN(-ENODEV);
 
         disk_obd = ctxt->loc_exp->exp_obd;
         push_ctxt(&saved, &disk_obd->obd_lvfs_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);
+       rc = llog_open(req->rq_svc_thread->t_env, ctxt, &loghandle,
+                        &body->lgd_logid, NULL, LLOG_OPEN_EXISTS);
+       if (rc)
+               GOTO(out_pop, rc);
 
-        memset(buf, 0, LLOG_CHUNK_SIZE);
-        rc = llog_prev_block(loghandle, body->lgd_index,
-                             buf, LLOG_CHUNK_SIZE);
+       flags = body->lgd_llh_flags;
+       rc = llog_init_handle(req->rq_svc_thread->t_env, loghandle, flags,
+                             NULL);
         if (rc)
                 GOTO(out_close, rc);
 
@@ -299,25 +267,23 @@ int llog_origin_handle_prev_block(struct ptlrpc_request *req)
         *repbody = *body;
 
         ptr = req_capsule_server_get(&req->rq_pill, &RMF_EADATA);
-        memcpy(ptr, buf, LLOG_CHUNK_SIZE);
-        GOTO(out_close, rc);
-out_close:
-        rc2 = llog_close(loghandle);
-        if (!rc)
-                rc = rc2;
+       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:
+       llog_origin_close(req->rq_svc_thread->t_env, loghandle);
 out_pop:
-        pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
-        llog_ctxt_put(ctxt);
-out_free:
-        OBD_FREE(buf, LLOG_CHUNK_SIZE);
-        return rc;
+       pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
+       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;
@@ -325,31 +291,35 @@ int llog_origin_handle_read_header(struct ptlrpc_request *req)
         struct lvfs_run_ctxt  saved;
         struct llog_ctxt     *ctxt;
         __u32                 flags;
-        int                   rc, rc2;
+       int                   rc;
+
         ENTRY;
 
         body = req_capsule_client_get(&req->rq_pill, &RMF_LLOGD_BODY);
         if (body == NULL)
                 RETURN(-EFAULT);
 
-        ctxt = llog_get_context(obd, body->lgd_ctxt_idx);
-        if (ctxt == NULL)
-                RETURN(-ENODEV);
+       ctxt = llog_get_context(req->rq_export->exp_obd, body->lgd_ctxt_idx);
+       if (ctxt == NULL)
+               RETURN(-ENODEV);
 
         disk_obd = ctxt->loc_exp->exp_obd;
         push_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
 
-        rc = llog_create(ctxt, &loghandle, &body->lgd_logid, NULL);
-        if (rc)
-                GOTO(out_pop, rc);
-
-        /*
-         * llog_init_handle() reads the llog header
-         */
-        flags = body->lgd_llh_flags;
-        rc = llog_init_handle(loghandle, flags, NULL);
-        if (rc)
-                GOTO(out_close, rc);
+       rc = llog_open(req->rq_svc_thread->t_env, ctxt, &loghandle,
+                      &body->lgd_logid, NULL, LLOG_OPEN_EXISTS);
+       if (rc)
+               GOTO(out_pop, 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;
 
         rc = req_capsule_server_pack(&req->rq_pill);
         if (rc)
@@ -357,16 +327,15 @@ int llog_origin_handle_read_header(struct ptlrpc_request *req)
 
         hdr = req_capsule_server_get(&req->rq_pill, &RMF_LLOG_LOG_HDR);
         *hdr = *loghandle->lgh_hdr;
-        GOTO(out_close, rc);
+        EXIT;
 out_close:
-        rc2 = llog_close(loghandle);
-        if (!rc)
-                rc = rc2;
+       llog_origin_close(req->rq_svc_thread->t_env, loghandle);
 out_pop:
-        pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
-        llog_ctxt_put(ctxt);
-        return rc;
+       pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
+       llog_ctxt_put(ctxt);
+       return rc;
 }
+EXPORT_SYMBOL(llog_origin_handle_read_header);
 
 int llog_origin_handle_close(struct ptlrpc_request *req)
 {
@@ -374,10 +343,10 @@ int llog_origin_handle_close(struct ptlrpc_request *req)
         /* Nothing to do */
         RETURN(0);
 }
+EXPORT_SYMBOL(llog_origin_handle_close);
 
 int llog_origin_handle_cancel(struct ptlrpc_request *req)
 {
-        struct obd_device *obd = req->rq_export->exp_obd;
         int num_cookies, rc = 0, err, i, failed = 0;
         struct obd_device *disk_obd;
         struct llog_cookie *logcookies;
@@ -396,7 +365,8 @@ int llog_origin_handle_cancel(struct ptlrpc_request *req)
                 RETURN(-EFAULT);
         }
 
-        ctxt = llog_get_context(obd, logcookies->lgc_subsys);
+       ctxt = llog_get_context(req->rq_export->exp_obd,
+                               logcookies->lgc_subsys);
         if (ctxt == NULL)
                 RETURN(-ENODEV);
 
@@ -415,7 +385,8 @@ int llog_origin_handle_cancel(struct ptlrpc_request *req)
                         GOTO(pop_ctxt, rc = PTR_ERR(handle));
                 }
 
-                rc = llog_cat_cancel_records(cathandle, 1, logcookies);
+               rc = llog_cat_cancel_records(req->rq_svc_thread->t_env,
+                                            cathandle, 1, logcookies);
 
                 /*
                  * Do not raise -ENOENT errors for resent rpcs. This rec already
@@ -457,255 +428,8 @@ pop_ctxt:
 }
 EXPORT_SYMBOL(llog_origin_handle_cancel);
 
-static int llog_catinfo_config(struct obd_device *obd, char *buf, int buf_len,
-                               char *client)
-{
-        struct mds_obd       *mds = &obd->u.mds;
-        struct llog_ctxt     *ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
-        struct lvfs_run_ctxt  saved;
-        struct llog_handle   *handle = NULL;
-        char                  name[4][64];
-        int                   rc, i, l, remains = buf_len;
-        char                 *out = buf;
-        ENTRY;
-
-        if (ctxt == NULL || mds == NULL)
-                GOTO(release_ctxt, rc = -ENODEV);
-
-        push_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_lvfs_ctxt, NULL);
-
-        sprintf(name[0], "%s", mds->mds_profile);
-        sprintf(name[1], "%s-clean", mds->mds_profile);
-        sprintf(name[2], "%s", client);
-        sprintf(name[3], "%s-clean", client);
-
-        for (i = 0; i < 4; i++) {
-                int index, uncanceled = 0;
-                rc = llog_create(ctxt, &handle, NULL, name[i]);
-                if (rc)
-                        GOTO(out_pop, rc);
-                rc = llog_init_handle(handle, 0, NULL);
-                if (rc) {
-                        llog_close(handle);
-                        GOTO(out_pop, rc = -ENOENT);
-                }
-
-                for (index = 1; index < (LLOG_BITMAP_BYTES * 8); index ++) {
-                        if (ext2_test_bit(index, handle->lgh_hdr->llh_bitmap))
-                                uncanceled++;
-                }
-
-                l = snprintf(out, remains, "[Log Name]: %s\nLog Size: %llu\n"
-                             "Last Index: %d\nUncanceled Records: %d\n\n",
-                             name[i],
-                             i_size_read(handle->lgh_file->f_dentry->d_inode),
-                             handle->lgh_last_idx, uncanceled);
-                out += l;
-                remains -= l;
-
-                llog_close(handle);
-                if (remains <= 0)
-                        break;
-        }
-        GOTO(out_pop, rc);
-out_pop:
-        pop_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_lvfs_ctxt, NULL);
-release_ctxt:
-        llog_ctxt_put(ctxt);
-        return rc;
-}
-
-struct cb_data {
-        struct llog_ctxt *ctxt;
-        char *out;
-        int  remains;
-        int  init;
-};
-
-static int llog_catinfo_cb(struct llog_handle *cat,
-                           struct llog_rec_hdr *rec, void *data)
-{
-        static char *out = NULL;
-        static int remains = 0;
-        struct llog_ctxt *ctxt = NULL;
-        struct llog_handle *handle = NULL;
-        struct llog_logid *logid;
-        struct llog_logid_rec *lir;
-        int l, rc, index, count = 0;
-        struct cb_data *cbd = (struct cb_data*)data;
-        ENTRY;
-
-        if (cbd->init) {
-                out = cbd->out;
-                remains = cbd->remains;
-                cbd->init = 0;
-        }
-
-        if (!(cat->lgh_hdr->llh_flags & LLOG_F_IS_CAT))
-                RETURN(-EINVAL);
-
-        if (!cbd->ctxt)
-                RETURN(-ENODEV);
-
-        lir = (struct llog_logid_rec *)rec;
-        logid = &lir->lid_id;
-        rc = llog_create(ctxt, &handle, logid, NULL);
-        if (rc)
-                RETURN(-EINVAL);
-        rc = llog_init_handle(handle, 0, NULL);
-        if (rc)
-                GOTO(out_close, rc);
-
-        for (index = 1; index < (LLOG_BITMAP_BYTES * 8); index++) {
-                if (ext2_test_bit(index, handle->lgh_hdr->llh_bitmap))
-                        count++;
-        }
-
-        l = snprintf(out, remains, "\t[Log ID]: #"LPX64"#"LPX64"#%08x\n"
-                     "\tLog Size: %llu\n\tLast Index: %d\n"
-                     "\tUncanceled Records: %d\n",
-                     logid->lgl_oid, logid->lgl_oseq, logid->lgl_ogen,
-                     i_size_read(handle->lgh_file->f_dentry->d_inode),
-                     handle->lgh_last_idx, count);
-        out += l;
-        remains -= l;
-        cbd->out = out;
-        cbd->remains = remains;
-        if (remains <= 0) {
-                CWARN("Not enough memory\n");
-                rc = -ENOMEM;
-        }
-        EXIT;
-out_close:
-        llog_close(handle);
-        return rc;
-}
-
-static int llog_catinfo_deletions(struct obd_device *obd, char *buf,
-                                  int buf_len)
-{
-        struct mds_obd *mds = &obd->u.mds;
-        struct llog_handle *handle;
-        struct lvfs_run_ctxt saved;
-        int size, i, count;
-        struct llog_catid *idarray;
-        char name[32] = CATLIST;
-        struct cb_data data;
-        struct llog_ctxt *ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
-        int rc;
-        ENTRY;
-
-        if (ctxt == NULL || mds == NULL)
-                GOTO(release_ctxt, rc = -ENODEV);
-
-        count = mds->mds_lov_desc.ld_tgt_count;
-        size = sizeof(*idarray) * count;
-
-        OBD_ALLOC_LARGE(idarray, size);
-        if (!idarray)
-                GOTO(release_ctxt, rc = -ENOMEM);
-
-        cfs_mutex_down(&obd->obd_olg.olg_cat_processing);
-        rc = llog_get_cat_list(obd, name, 0, count, idarray);
-        if (rc)
-                GOTO(out_free, rc);
-
-        push_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_lvfs_ctxt, NULL);
-
-        data.ctxt = ctxt;
-        data.out = buf;
-        data.remains = buf_len;
-        for (i = 0; i < count; i++) {
-                int l, index, uncanceled = 0;
-
-                rc = llog_create(ctxt, &handle, &idarray[i].lci_logid, NULL);
-                if (rc)
-                        GOTO(out_pop, rc);
-                rc = llog_init_handle(handle, 0, NULL);
-                if (rc) {
-                        llog_close(handle);
-                        GOTO(out_pop, rc = -ENOENT);
-                }
-                for (index = 1; index < (LLOG_BITMAP_BYTES * 8); index++) {
-                        if (ext2_test_bit(index, handle->lgh_hdr->llh_bitmap))
-                                uncanceled++;
-                }
-                l = snprintf(data.out, data.remains,
-                             "\n[Catlog ID]: #"LPX64"#"LPX64"#%08x  "
-                             "[Log Count]: %d\n",
-                             idarray[i].lci_logid.lgl_oid,
-                             idarray[i].lci_logid.lgl_oseq,
-                             idarray[i].lci_logid.lgl_ogen, uncanceled);
-
-                data.out += l;
-                data.remains -= l;
-                data.init = 1;
-
-                llog_process(handle, llog_catinfo_cb, &data, NULL);
-                llog_close(handle);
-
-                if (data.remains <= 0)
-                        break;
-        }
-        EXIT;
-out_pop:
-        pop_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_lvfs_ctxt, NULL);
-out_free:
-        cfs_mutex_up(&obd->obd_olg.olg_cat_processing);
-        OBD_FREE_LARGE(idarray, size);
-release_ctxt:
-        llog_ctxt_put(ctxt);
-        return rc;
-}
-
-int llog_catinfo(struct ptlrpc_request *req)
-{
-        struct obd_export *exp = req->rq_export;
-        struct obd_device *obd = exp->exp_obd;
-        char              *keyword;
-        char              *buf, *reply;
-        int                rc;
-        ENTRY;
-
-        OBD_ALLOC(buf, LLOG_CHUNK_SIZE);
-        if (buf == NULL)
-                RETURN(-ENOMEM);
-
-        memset(buf, 0, LLOG_CHUNK_SIZE);
-
-        keyword = req_capsule_client_get(&req->rq_pill, &RMF_NAME);
-        LASSERT(keyword);
-
-        if (strcmp(keyword, "config") == 0) {
-                char *client = req_capsule_client_get(&req->rq_pill,
-                                                      &RMF_STRING);
-
-                LASSERT(client);
-                rc = llog_catinfo_config(obd, buf, LLOG_CHUNK_SIZE, client);
-        } else if (strcmp(keyword, "deletions") == 0) {
-                rc = llog_catinfo_deletions(obd, buf, LLOG_CHUNK_SIZE);
-        } else {
-                rc = -EOPNOTSUPP;
-        }
-
-        req_capsule_set_size(&req->rq_pill, &RMF_STRING, RCL_SERVER,
-                             LLOG_CHUNK_SIZE);
-        rc = req_capsule_server_pack(&req->rq_pill);
-        if (rc)
-                GOTO(out_free, rc = -ENOMEM);
-
-        reply = req_capsule_server_get(&req->rq_pill, &RMF_STRING);
-        if (strlen(buf) == 0)
-                sprintf(buf, "%s", "No log informations\n");
-        memcpy(reply, buf, LLOG_CHUNK_SIZE);
-        EXIT;
-out_free:
-        OBD_FREE(buf, LLOG_CHUNK_SIZE);
-        return rc;
-}
-
 #else /* !__KERNEL__ */
-int llog_origin_handle_create(struct ptlrpc_request *req)
+int llog_origin_handle_open(struct ptlrpc_request *req)
 {
         LBUG();
         return 0;