/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=8:tabstop=8:
*
- * Copyright (C) 2001-2003 Cluster File Systems, Inc.
- * Author Peter Braam <braam@clusterfs.com>
+ * GPL HEADER START
*
- * This file is part of Lustre, http://www.lustre.org.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * 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 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 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.
+ * 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).
*
- * 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.
+ * 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
*
- * For testing and management it is treated as an obd_device,
- * although * it does not export a full OBD method table (the
- * requests are coming * in over the wire, so object target modules
- * do not have a full * method table.)
+ * 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.
*
+ * GPL HEADER END
+ */
+/*
+ * Copyright 2008 Sun Microsystems, Inc. All rights reserved
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * lustre/osc/osc_create.c
+ * For testing and management it is treated as an obd_device,
+ * although * it does not export a full OBD method table (the
+ * requests are coming * in over the wire, so object target modules
+ * do not have a full * method table.)
+ *
+ * Author: Peter Braam <braam@clusterfs.com>
*/
#ifndef EXPORT_SYMTAB
#define DEBUG_SUBSYSTEM S_OSC
#ifdef __KERNEL__
-# include <linux/version.h>
-# include <linux/module.h>
-# include <linux/mm.h>
-# include <linux/highmem.h>
-# include <linux/ctype.h>
-# include <linux/init.h>
-# if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0))
-# include <linux/workqueue.h>
-# include <linux/smp_lock.h>
-# else
-# include <linux/locks.h>
-# endif
+# include <libcfs/libcfs.h>
#else /* __KERNEL__ */
# include <liblustre.h>
#endif
# include <ctype.h>
#endif
-# include <linux/lustre_dlm.h>
-#include <linux/obd_class.h>
+# include <lustre_dlm.h>
+#include <obd_class.h>
#include "osc_internal.h"
+static int osc_interpret_create(struct ptlrpc_request *req, void *data, int rc)
+{
+ struct osc_creator *oscc;
+ struct ost_body *body = NULL;
+ ENTRY;
+
+ if (req->rq_repmsg) {
+ body = lustre_swab_repbuf(req, REPLY_REC_OFF, sizeof(*body),
+ lustre_swab_ost_body);
+ if (body == NULL && rc == 0)
+ rc = -EPROTO;
+ }
+
+ oscc = req->rq_async_args.pointer_arg[0];
+ LASSERT(oscc && (oscc->oscc_obd != LP_POISON));
+
+ spin_lock(&oscc->oscc_lock);
+ oscc->oscc_flags &= ~OSCC_FLAG_CREATING;
+ switch (rc) {
+ case 0: {
+ if (body) {
+ int diff = body->oa.o_id - oscc->oscc_last_id;
+
+ if (diff < oscc->oscc_grow_count)
+ oscc->oscc_grow_count =
+ max(diff/3, OST_MIN_PRECREATE);
+ else
+ oscc->oscc_flags &= ~OSCC_FLAG_LOW;
+ oscc->oscc_last_id = body->oa.o_id;
+ }
+ spin_unlock(&oscc->oscc_lock);
+ break;
+ }
+ case -EAGAIN:
+ /* valid race delorphan vs create, or somthing after resend */
+ spin_unlock(&oscc->oscc_lock);
+ DEBUG_REQ(D_INODE, req, "Got EGAIN - resend \n");
+ break;
+ case -ENOSPC:
+ case -EROFS:
+ case -EFBIG: {
+ oscc->oscc_flags |= OSCC_FLAG_NOSPC;
+ if (body && rc == -ENOSPC) {
+ oscc->oscc_grow_count = OST_MIN_PRECREATE;
+ oscc->oscc_last_id = body->oa.o_id;
+ }
+ spin_unlock(&oscc->oscc_lock);
+ DEBUG_REQ(D_INODE, req, "OST out of space, flagging");
+ break;
+ }
+ case -EIO: {
+ /* filter always set body->oa.o_id as the last_id
+ * of filter (see filter_handle_precreate for detail)*/
+ if (body && body->oa.o_id > oscc->oscc_last_id)
+ oscc->oscc_last_id = body->oa.o_id;
+ spin_unlock(&oscc->oscc_lock);
+ break;
+ }
+ default: {
+ oscc->oscc_flags |= OSCC_FLAG_RECOVERING;
+ oscc->oscc_grow_count = OST_MIN_PRECREATE;
+ spin_unlock(&oscc->oscc_lock);
+ DEBUG_REQ(D_ERROR, req,
+ "Unknown rc %d from async create: failing oscc", rc);
+ ptlrpc_fail_import(req->rq_import,
+ lustre_msg_get_conn_cnt(req->rq_reqmsg));
+ }
+ }
+
+ CDEBUG(D_HA, "preallocated through id "LPU64" (next to use "LPU64")\n",
+ oscc->oscc_last_id, oscc->oscc_next_id);
+
+ cfs_waitq_signal(&oscc->oscc_waitq);
+ RETURN(rc);
+}
+
+static int oscc_internal_create(struct osc_creator *oscc)
+{
+ struct ptlrpc_request *request;
+ struct ost_body *body;
+ __u32 size[] = { sizeof(struct ptlrpc_body), sizeof(*body) };
+ ENTRY;
+
+ LASSERT_SPIN_LOCKED(&oscc->oscc_lock);
+
+ if (oscc->oscc_flags & OSCC_FLAG_CREATING ||
+ oscc->oscc_flags & OSCC_FLAG_RECOVERING) {
+ spin_unlock(&oscc->oscc_lock);
+ RETURN(0);
+ }
+
+ if (oscc->oscc_grow_count < oscc->oscc_max_grow_count &&
+ ((oscc->oscc_flags & OSCC_FLAG_LOW) == 0) &&
+ (__s64)(oscc->oscc_last_id - oscc->oscc_next_id) <=
+ (oscc->oscc_grow_count / 4 + 1)) {
+ oscc->oscc_flags |= OSCC_FLAG_LOW;
+ oscc->oscc_grow_count *= 2;
+ }
+
+ if (oscc->oscc_grow_count > oscc->oscc_max_grow_count / 2)
+ oscc->oscc_grow_count = oscc->oscc_max_grow_count / 2;
+
+ oscc->oscc_flags |= OSCC_FLAG_CREATING;
+ spin_unlock(&oscc->oscc_lock);
+
+ request = ptlrpc_prep_req(oscc->oscc_obd->u.cli.cl_import,
+ LUSTRE_OST_VERSION, OST_CREATE, 2,
+ size, NULL);
+ if (request == NULL) {
+ spin_lock(&oscc->oscc_lock);
+ oscc->oscc_flags &= ~OSCC_FLAG_CREATING;
+ spin_unlock(&oscc->oscc_lock);
+ RETURN(-ENOMEM);
+ }
+
+ request->rq_request_portal = OST_CREATE_PORTAL;
+ ptlrpc_at_set_req_timeout(request);
+ body = lustre_msg_buf(request->rq_reqmsg, REQ_REC_OFF, sizeof(*body));
+
+ spin_lock(&oscc->oscc_lock);
+ body->oa.o_id = oscc->oscc_last_id + oscc->oscc_grow_count;
+ body->oa.o_gr = oscc->oscc_oa.o_gr;
+ LASSERT(body->oa.o_gr > 0);
+ body->oa.o_valid |= OBD_MD_FLID | OBD_MD_FLGROUP;
+ spin_unlock(&oscc->oscc_lock);
+ CDEBUG(D_RPCTRACE, "prealloc through id "LPU64" (last seen "LPU64")\n",
+ body->oa.o_id, oscc->oscc_last_id);
+
+ ptlrpc_req_set_repsize(request, 2, size);
+
+ request->rq_async_args.pointer_arg[0] = oscc;
+ request->rq_interpret_reply = osc_interpret_create;
+ ptlrpcd_add_req(request);
+
+ RETURN(0);
+}
+
+static int oscc_has_objects(struct osc_creator *oscc, int count)
+{
+ int have_objs;
+ spin_lock(&oscc->oscc_lock);
+ have_objs = ((__s64)(oscc->oscc_last_id - oscc->oscc_next_id) >= count);
+
+ if (!have_objs) {
+ oscc_internal_create(oscc);
+ } else {
+ spin_unlock(&oscc->oscc_lock);
+ }
+
+ return have_objs;
+}
+
+static int oscc_wait_for_objects(struct osc_creator *oscc, int count)
+{
+ int have_objs;
+ int ost_full;
+ int osc_invalid;
+
+ have_objs = oscc_has_objects(oscc, count);
+
+ spin_lock(&oscc->oscc_lock);
+ ost_full = (oscc->oscc_flags & OSCC_FLAG_NOSPC);
+ spin_unlock(&oscc->oscc_lock);
+
+ osc_invalid = oscc->oscc_obd->u.cli.cl_import->imp_invalid;
+
+ return have_objs || ost_full || osc_invalid;
+}
+
+static int oscc_precreate(struct osc_creator *oscc, int wait)
+{
+ struct l_wait_info lwi = { 0 };
+ int rc = 0;
+ ENTRY;
+
+ if (oscc_has_objects(oscc, oscc->oscc_grow_count / 2))
+ RETURN(0);
+
+ if (!wait)
+ RETURN(0);
+
+ /* no rc check -- a no-INTR, no-TIMEOUT wait can't fail */
+ l_wait_event(oscc->oscc_waitq, oscc_wait_for_objects(oscc, 1), &lwi);
+
+ if (!oscc_has_objects(oscc, 1) && (oscc->oscc_flags & OSCC_FLAG_NOSPC))
+ rc = -ENOSPC;
+
+ if (oscc->oscc_obd->u.cli.cl_import->imp_invalid)
+ rc = -EIO;
+
+ RETURN(rc);
+}
+
int oscc_recovering(struct osc_creator *oscc)
{
int recov = 0;
return recov;
}
-/* this only is used now for deleting orphanes */
+/* decide if the OST has remaining object, return value :
+ 0 : the OST has remaining object, and don't need to do precreate.
+ 1 : the OST has no remaining object, and will send a RPC for precreate.
+ 2 : the OST has no remaining object, and will not get any for
+ a potentially very long time
+ 1000 : unusable
+ */
+int osc_precreate(struct obd_export *exp)
+{
+ struct osc_creator *oscc = &exp->exp_obd->u.cli.cl_oscc;
+ struct obd_import *imp = exp->exp_imp_reverse;
+ ENTRY;
+
+ LASSERT(oscc != NULL);
+ if (imp != NULL && imp->imp_deactive)
+ RETURN(1000);
+
+ if (oscc->oscc_last_id < oscc->oscc_next_id) {
+ spin_lock(&oscc->oscc_lock);
+ if (oscc->oscc_flags & OSCC_FLAG_NOSPC) {
+ spin_unlock(&oscc->oscc_lock);
+ RETURN(1000);
+ }
+ if (oscc->oscc_flags & OSCC_FLAG_SYNC_IN_PROGRESS) {
+ spin_unlock(&oscc->oscc_lock);
+ RETURN(1);
+ }
+ if (oscc->oscc_flags & OSCC_FLAG_RECOVERING) {
+ spin_unlock(&oscc->oscc_lock);
+ RETURN(2);
+ }
+
+ if (oscc->oscc_flags & OSCC_FLAG_CREATING) {
+ spin_unlock(&oscc->oscc_lock);
+ RETURN(1);
+ }
+
+ oscc_internal_create(oscc);
+ RETURN(1);
+ }
+ RETURN(0);
+}
+
int osc_create(struct obd_export *exp, struct obdo *oa,
- void *acl, int acl_size, struct lov_stripe_md **ea,
- struct obd_trans_info *oti)
+ struct lov_stripe_md **ea, struct obd_trans_info *oti)
{
struct osc_creator *oscc = &exp->exp_obd->u.cli.cl_oscc;
- int rc = 0, try_again = 1;
+ struct lov_stripe_md *lsm;
+ int try_again = 1, rc = 0;
ENTRY;
LASSERT(oa);
LASSERT(ea);
LASSERT(oa->o_gr > 0);
LASSERT(oa->o_valid & OBD_MD_FLGROUP);
- LASSERT(acl == NULL && acl_size == 0);
+
+ if ((oa->o_valid & OBD_MD_FLFLAGS) &&
+ oa->o_flags == OBD_FL_RECREATE_OBJS) {
+ RETURN(osc_real_create(exp, oa, ea, oti));
+ }
if (oa->o_gr == FILTER_GROUP_LLOG || oa->o_gr == FILTER_GROUP_ECHO)
RETURN(osc_real_create(exp, oa, ea, oti));
spin_lock(&oscc->oscc_lock);
if (oscc->oscc_flags & OSCC_FLAG_SYNC_IN_PROGRESS) {
spin_unlock(&oscc->oscc_lock);
- return -EBUSY;
+ RETURN(-EBUSY);
}
if (!(oscc->oscc_flags & OSCC_FLAG_RECOVERING)) {
spin_unlock(&oscc->oscc_lock);
- return 0;
+ RETURN(0);
}
oscc->oscc_flags |= OSCC_FLAG_SYNC_IN_PROGRESS;
+ /* seting flag LOW we prevent extra grow precreate size
+ * and enforce use last assigned size */
+ oscc->oscc_flags |= OSCC_FLAG_LOW;
spin_unlock(&oscc->oscc_lock);
- CDEBUG(D_HA, "%s; oscc recovery started\n",
- exp->exp_obd->obd_name);
- LASSERT(oscc->oscc_flags & OSCC_FLAG_RECOVERING);
+ CDEBUG(D_HA, "%s: oscc recovery started - delete to "LPU64"\n",
+ oscc->oscc_obd->obd_name, oscc->oscc_next_id - 1);
- CDEBUG(D_HA, "%s: deleting to next_id: "LPU64"\n",
- oscc->oscc_obd->obd_name, oa->o_id);
+ /* delete from next_id on up */
+ oa->o_valid |= OBD_MD_FLID;
+ oa->o_id = oscc->oscc_next_id - 1;
rc = osc_real_create(exp, oa, ea, NULL);
- if (oscc->oscc_obd == NULL) {
- CWARN("the obd for oscc %p has been freed\n", oscc);
- RETURN(rc);
- }
spin_lock(&oscc->oscc_lock);
oscc->oscc_flags &= ~OSCC_FLAG_SYNC_IN_PROGRESS;
if (rc == -ENOSPC)
oscc->oscc_flags |= OSCC_FLAG_NOSPC;
oscc->oscc_flags &= ~OSCC_FLAG_RECOVERING;
- CDEBUG(D_HA, "%s: oscc recovery finished: %d\n",
- oscc->oscc_obd->obd_name, rc);
- wake_up(&oscc->oscc_waitq);
+ oscc->oscc_last_id = oa->o_id;
+ CDEBUG(D_HA, "%s: oscc recovery finished, last_id: "
+ LPU64", rc: %d\n", oscc->oscc_obd->obd_name,
+ oscc->oscc_last_id, rc);
+ cfs_waitq_signal(&oscc->oscc_waitq);
} else {
CDEBUG(D_ERROR, "%s: oscc recovery failed: %d\n",
oscc->oscc_obd->obd_name, rc);
}
spin_unlock(&oscc->oscc_lock);
- RETURN(rc);
- }
- while (try_again) {
- /* If orphans are being recovered, then we must wait until
- it is finished before we can continue with create. */
- if (oscc_recovering(oscc)) {
- struct l_wait_info lwi;
- CDEBUG(D_HA,"%p: oscc recovery in progress, waiting\n",
- oscc);
- lwi = LWI_TIMEOUT(MAX(obd_timeout*HZ/4, 1), NULL, NULL);
- rc = l_wait_event(oscc->oscc_waitq,
- !oscc_recovering(oscc), &lwi);
- LASSERT(rc == 0 || rc == -ETIMEDOUT);
- if (rc == -ETIMEDOUT) {
- CDEBUG(D_ERROR,"%p: timeout waiting on recovery\n",
- oscc);
- RETURN(rc);
- }
- CDEBUG(D_HA, "%p: oscc recovery over, waking up\n",
- oscc);
- }
-
- spin_lock(&oscc->oscc_lock);
- if (oscc->oscc_flags & OSCC_FLAG_EXITING) {
- spin_unlock(&oscc->oscc_lock);
- break;
- }
-
- if (oscc->oscc_flags & OSCC_FLAG_NOSPC) {
- rc = -ENOSPC;
- spin_unlock(&oscc->oscc_lock);
- break;
- }
-
- oscc->oscc_next_id++;
- oa->o_id = oscc->oscc_next_id;
- try_again = 0;
- spin_unlock(&oscc->oscc_lock);
+ RETURN(rc);
+ }
- CDEBUG(D_HA, "%s: returning objid "LPU64"\n",
- oscc->oscc_obd->u.cli.cl_import->imp_target_uuid.uuid,
- oa->o_id);
+ lsm = *ea;
+ if (lsm == NULL) {
+ rc = obd_alloc_memmd(exp, &lsm);
+ if (rc < 0)
+ RETURN(rc);
}
while (try_again) {
if (oscc_recovering(oscc)) {
struct l_wait_info lwi;
- CDEBUG(D_HA,"%p: oscc recovery in progress, waiting\n",
- oscc);
+ CDEBUG(D_HA,"%s: oscc recovery in progress, waiting\n",
+ oscc->oscc_obd->obd_name);
- lwi = LWI_TIMEOUT(MAX(obd_timeout*HZ/4, 1), NULL, NULL);
+ lwi = LWI_TIMEOUT(cfs_timeout_cap(cfs_time_seconds(
+ obd_timeout / 4)), NULL, NULL);
rc = l_wait_event(oscc->oscc_waitq,
!oscc_recovering(oscc), &lwi);
LASSERT(rc == 0 || rc == -ETIMEDOUT);
if (rc == -ETIMEDOUT) {
- CDEBUG(D_ERROR,"%p: timeout waiting on recovery\n",
- oscc);
+ CDEBUG(D_HA,"%s: timeout waiting on recovery\n",
+ oscc->oscc_obd->obd_name);
RETURN(rc);
}
- CDEBUG(D_HA, "%p: oscc recovery over, waking up\n",
- oscc);
+ CDEBUG(D_HA, "%s: oscc recovery over, waking up\n",
+ oscc->oscc_obd->obd_name);
}
spin_lock(&oscc->oscc_lock);
break;
}
- if (oscc->oscc_flags & OSCC_FLAG_NOSPC) {
+ if (oscc->oscc_last_id >= oscc->oscc_next_id) {
+ memcpy(oa, &oscc->oscc_oa, sizeof(*oa));
+ oa->o_id = oscc->oscc_next_id;
+ lsm->lsm_object_id = oscc->oscc_next_id;
+ *ea = lsm;
+ oscc->oscc_next_id++;
+ try_again = 0;
+
+ CDEBUG(D_RPCTRACE, "%s: set oscc_next_id = "LPU64"\n",
+ exp->exp_obd->obd_name, oscc->oscc_next_id);
+ } else if (oscc->oscc_flags & OSCC_FLAG_NOSPC) {
rc = -ENOSPC;
spin_unlock(&oscc->oscc_lock);
break;
}
-
- oscc->oscc_next_id++;
- oa->o_id = oscc->oscc_next_id;
- try_again = 0;
spin_unlock(&oscc->oscc_lock);
-
- CDEBUG(D_HA, "%s: returning objid "LPU64"\n",
- oscc->oscc_obd->u.cli.cl_import->imp_target_uuid.uuid,
- oa->o_id);
+ rc = oscc_precreate(oscc, try_again);
+ if (rc)
+ break;
}
+ if (rc == 0)
+ CDEBUG(D_INFO, "%s: returning objid "LPU64"\n",
+ obd2cli_tgt(oscc->oscc_obd), lsm->lsm_object_id);
+ else if (*ea == NULL)
+ obd_free_memmd(exp, &lsm);
RETURN(rc);
}
return;
oscc = &obd->u.cli.cl_oscc;
- memset(oscc, 0, sizeof(*oscc));
- oscc->oscc_obd = obd;
+ memset(oscc, 0, sizeof(*oscc));
+ CFS_INIT_LIST_HEAD(&oscc->oscc_list);
+ cfs_waitq_init(&oscc->oscc_waitq);
spin_lock_init(&oscc->oscc_lock);
+ oscc->oscc_obd = obd;
+ oscc->oscc_grow_count = OST_MIN_PRECREATE;
+ oscc->oscc_max_grow_count = OST_MAX_PRECREATE;
+
+ oscc->oscc_next_id = 2;
+ oscc->oscc_last_id = 1;
oscc->oscc_flags |= OSCC_FLAG_RECOVERING;
- init_waitqueue_head(&oscc->oscc_waitq);
+ /* XXX the export handle should give the oscc the last object */
+ /* oed->oed_oscc.oscc_last_id = exph->....; */
}
git://git.whamcloud.com / fs / lustre-release.git / blobdiff