* Copyright (C) 2001-2003 Cluster File Systems, Inc.
* Author Peter Braam <braam@clusterfs.com>
*
- * This file is part of Lustre, http://www.lustre.org.
+ * This file is part of the Lustre file system, http://www.lustre.org
+ * Lustre is a trademark of Cluster File Systems, Inc.
*
- * 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.
+ * You may have signed or agreed to another license before downloading
+ * this software. If so, you are bound by the terms and conditions
+ * of that agreement, and the following does not apply to you. See the
+ * LICENSE file included with this distribution for more information.
*
- * 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.
+ * If you did not agree to a different license, then this copy of Lustre
+ * is open source 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.
*
- * 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.
+ * In either case, 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
+ * license text for more details.
*
* For testing and management it is treated as an obd_device,
* although * it does not export a full OBD method table (the
#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;
+ if (rc == -ENOSPC || rc == -EROFS) {
+ 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");
+ } else if (rc != 0 && rc != -EIO) {
+ 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));
+ } else {
+ if (rc == 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;
+ }
+ } else {
+ /* 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);
+
+ }
+
+ 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;
+ int size[] = { sizeof(struct ptlrpc_body), sizeof(*body) };
+ ENTRY;
+
+ spin_lock(&oscc->oscc_lock);
+ if (oscc->oscc_grow_count < OST_MAX_PRECREATE &&
+ !(oscc->oscc_flags & (OSCC_FLAG_LOW | OSCC_FLAG_RECOVERING)) &&
+ (__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 > OST_MAX_PRECREATE / 2)
+ oscc->oscc_grow_count = OST_MAX_PRECREATE / 2;
+
+ if (oscc->oscc_flags & OSCC_FLAG_CREATING ||
+ oscc->oscc_flags & OSCC_FLAG_RECOVERING) {
+ spin_unlock(&oscc->oscc_lock);
+ RETURN(0);
+ }
+ 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; //XXX FIXME bug 249
+ 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_valid |= OBD_MD_FLID;
+ spin_unlock(&oscc->oscc_lock);
+ CDEBUG(D_HA, "preallocating 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);
+ spin_unlock(&oscc->oscc_lock);
+
+ if (!have_objs)
+ oscc_internal_create(oscc);
+
+ 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 */
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 lov_stripe_md *lsm;
struct osc_creator *oscc = &exp->exp_obd->u.cli.cl_oscc;
- int rc = 0, try_again = 1;
+ 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 (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
- if (current->journal_info != NULL)
- CWARN("calling osc_create() with an "
- "open transaction isn't a good idea\n");
-#endif
- if (oa->o_gr == FILTER_GROUP_LLOG || oa->o_gr == FILTER_GROUP_ECHO)
+ if ((oa->o_valid & OBD_MD_FLGROUP) && (oa->o_gr != 0))
RETURN(osc_real_create(exp, oa, ea, oti));
+ if ((oa->o_valid & OBD_MD_FLFLAGS) &&
+ oa->o_flags == OBD_FL_RECREATE_OBJS) {
+ RETURN(osc_real_create(exp, oa, ea, oti));
+ }
+
/* this is the special case where create removes orphans */
if ((oa->o_valid & OBD_MD_FLFLAGS) &&
oa->o_flags == OBD_FL_DELORPHAN) {
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;
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\n",
+ oscc->oscc_obd->obd_name);
+
+ /* delete from next_id on up */
+ oa->o_valid |= OBD_MD_FLID;
+ oa->o_id = oscc->oscc_next_id - 1;
CDEBUG(D_HA, "%s: deleting to next_id: "LPU64"\n",
oscc->oscc_obd->obd_name, oa->o_id);
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);
}
+ lsm = *ea;
+ if (lsm == NULL) {
+ rc = obd_alloc_memmd(exp, &lsm);
+ if (rc < 0)
+ RETURN(rc);
+ }
+
while (try_again) {
/* If orphans are being recovered, then we must wait until
it is finished before we can continue with create. */
CDEBUG(D_HA,"%p: oscc recovery in progress, waiting\n",
oscc);
- 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",
+ CDEBUG(D_HA,"%p: timeout waiting on recovery\n",
oscc);
- portals_debug_dumplog();
RETURN(rc);
}
CDEBUG(D_HA, "%p: oscc recovery over, waking up\n",
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_HA, "%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_HA, "%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_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