* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2012, 2016, Intel Corporation.
+ * Copyright (c) 2012, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
*
- * lustre/osp/osp_sync.c
+ * lustre/osp/osp_precreate.c
*
* Lustre OST Proxy Device
*
* = import is disconnected =
*
* = import is inactive =
- * in this case osp_declare_object_create() returns an error
+ * in this case osp_declare_create() returns an error
*
*/
-/*
- **
+/**
* Check whether statfs data is expired
*
* OSP device caches statfs data for the target, the function checks
*/
static inline int osp_statfs_need_update(struct osp_device *d)
{
- return !cfs_time_before(cfs_time_current(),
- d->opd_statfs_fresh_till);
+ return !ktime_before(ktime_get(), d->opd_statfs_fresh_till);
}
/*
*
* each time OSP gets connected to OST, we should start from precreation cleanup
*/
-static inline bool osp_precreate_running(struct osp_device *d)
+static void osp_statfs_timer_cb(cfs_timer_cb_arg_t data)
{
- return !!(d->opd_pre_thread.t_flags & SVC_RUNNING);
+ struct osp_device *d = cfs_from_timer(d, data, opd_statfs_timer);
+
+ LASSERT(d);
+ if (d->opd_pre_task)
+ wake_up(&d->opd_pre_waitq);
}
-static inline bool osp_precreate_stopped(struct osp_device *d)
+static void osp_pre_update_msfs(struct osp_device *d, struct obd_statfs *msfs);
+
+/*
+ * The function updates current precreation status if broken, and
+ * updates that cached statfs state if functional, then wakes up waiters.
+ * We don't clear opd_pre_status directly here, but rather leave this
+ * to osp_pre_update_msfs() to do if everything is OK so that we don't
+ * have a race to clear opd_pre_status and then set it to -ENOSPC again.
+ *
+ * \param[in] d OSP device
+ * \param[in] msfs statfs data
+ * \param[in] rc new precreate status for device \a d
+ */
+static void osp_pre_update_status_msfs(struct osp_device *d,
+ struct obd_statfs *msfs, int rc)
{
- return !!(d->opd_pre_thread.t_flags & SVC_STOPPED);
+ if (rc)
+ d->opd_pre_status = rc;
+ else
+ osp_pre_update_msfs(d, msfs);
+
+ wake_up(&d->opd_pre_user_waitq);
}
-static void osp_statfs_timer_cb(unsigned long _d)
+/* Pass in the old statfs data in case the limits have changed */
+void osp_pre_update_status(struct osp_device *d, int rc)
{
- struct osp_device *d = (struct osp_device *) _d;
-
- LASSERT(d);
- if (d->opd_pre != NULL && osp_precreate_running(d))
- wake_up(&d->opd_pre_waitq);
+ osp_pre_update_status_msfs(d, &d->opd_statfs, rc);
}
+
/**
* RPC interpret callback for OST_STATFS RPC
*
* \retval negative negated errno on error
*/
static int osp_statfs_interpret(const struct lu_env *env,
- struct ptlrpc_request *req,
- union ptlrpc_async_args *aa, int rc)
+ struct ptlrpc_request *req, void *args, int rc)
{
- struct obd_import *imp = req->rq_import;
- struct obd_statfs *msfs;
- struct osp_device *d;
+ union ptlrpc_async_args *aa = args;
+ struct obd_import *imp = req->rq_import;
+ struct obd_statfs *msfs;
+ struct obd_statfs *sfs;
+ struct osp_device *d;
+ u64 maxage_ns;
ENTRY;
- aa = ptlrpc_req_async_args(req);
+ aa = ptlrpc_req_async_args(aa, req);
d = aa->pointer_arg[0];
LASSERT(d);
if (msfs == NULL)
GOTO(out, rc = -EPROTO);
- d->opd_statfs = *msfs;
-
- osp_pre_update_status(d, rc);
+ if (d->opd_pre)
+ osp_pre_update_status_msfs(d, msfs, 0);
+ else
+ d->opd_statfs = *msfs;
/* schedule next update */
- d->opd_statfs_fresh_till = cfs_time_shift(d->opd_statfs_maxage);
- mod_timer(&d->opd_statfs_timer, d->opd_statfs_fresh_till);
+ maxage_ns = d->opd_statfs_maxage * NSEC_PER_SEC;
+ d->opd_statfs_fresh_till = ktime_add_ns(ktime_get(), maxage_ns);
+ mod_timer(&d->opd_statfs_timer,
+ jiffies + cfs_time_seconds(d->opd_statfs_maxage));
d->opd_statfs_update_in_progress = 0;
- CDEBUG(D_CACHE, "updated statfs %p\n", d);
+ sfs = &d->opd_statfs;
+ CDEBUG(D_CACHE, "%s (%p): %llu blocks, %llu free, %llu avail, "
+ "%u bsize, %u reserved mb low, %u reserved mb high,"
+ "%llu files, %llu free files\n", d->opd_obd->obd_name, d,
+ sfs->os_blocks, sfs->os_bfree, sfs->os_bavail, sfs->os_bsize,
+ d->opd_reserved_mb_low, d->opd_reserved_mb_high,
+ sfs->os_files, sfs->os_ffree);
RETURN(0);
out:
- /* couldn't update statfs, try again as soon as possible */
- if (d->opd_pre != NULL && osp_precreate_running(d))
+ /* couldn't update statfs, try again with a small delay */
+ d->opd_statfs_fresh_till = ktime_add_ns(ktime_get(), 10 * NSEC_PER_SEC);
+ d->opd_statfs_update_in_progress = 0;
+ if (d->opd_pre && d->opd_pre_task)
wake_up(&d->opd_pre_waitq);
if (req->rq_import_generation == imp->imp_generation)
*
* \param[in] d OSP device
*/
-static int osp_statfs_update(struct osp_device *d)
+static int osp_statfs_update(const struct lu_env *env, struct osp_device *d)
{
+ u64 expire = obd_timeout * 1000 * NSEC_PER_SEC;
struct ptlrpc_request *req;
struct obd_import *imp;
union ptlrpc_async_args *aa;
- int rc;
+ int rc;
ENTRY;
imp = d->opd_obd->u.cli.cl_import;
LASSERT(imp);
- req = ptlrpc_request_alloc(imp, &RQF_OST_STATFS);
+ req = ptlrpc_request_alloc(imp,
+ d->opd_pre ? &RQF_OST_STATFS : &RQF_MDS_STATFS);
if (req == NULL)
RETURN(-ENOMEM);
- rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_STATFS);
+ rc = ptlrpc_request_pack(req,
+ d->opd_pre ? LUSTRE_OST_VERSION : LUSTRE_MDS_VERSION,
+ d->opd_pre ? OST_STATFS : MDS_STATFS);
if (rc) {
ptlrpc_request_free(req);
RETURN(rc);
}
ptlrpc_request_set_replen(req);
- req->rq_request_portal = OST_CREATE_PORTAL;
+ if (d->opd_pre)
+ req->rq_request_portal = OST_CREATE_PORTAL;
ptlrpc_at_set_req_timeout(req);
- req->rq_interpret_reply = (ptlrpc_interpterer_t)osp_statfs_interpret;
- aa = ptlrpc_req_async_args(req);
+ req->rq_interpret_reply = osp_statfs_interpret;
+ aa = ptlrpc_req_async_args(aa, req);
aa->pointer_arg[0] = d;
/*
* no updates till reply
*/
del_timer(&d->opd_statfs_timer);
- d->opd_statfs_fresh_till = cfs_time_shift(obd_timeout * 1000);
+ d->opd_statfs_fresh_till = ktime_add_ns(ktime_get(), expire);
d->opd_statfs_update_in_progress = 1;
ptlrpcd_add_req(req);
+ /* we still want to sync changes if no new changes are coming */
+ if (ktime_before(ktime_get(), d->opd_sync_next_commit_cb))
+ GOTO(out, rc);
+
+ if (atomic_read(&d->opd_sync_changes)) {
+ struct thandle *th;
+
+ th = dt_trans_create(env, d->opd_storage);
+ if (IS_ERR(th)) {
+ CERROR("%s: can't sync\n", d->opd_obd->obd_name);
+ GOTO(out, rc);
+ }
+ rc = dt_trans_start_local(env, d->opd_storage, th);
+ if (rc == 0) {
+ CDEBUG(D_OTHER, "%s: sync forced, %d changes\n",
+ d->opd_obd->obd_name,
+ atomic_read(&d->opd_sync_changes));
+ osp_sync_add_commit_cb_1s(env, d, th);
+ }
+ dt_trans_stop(env, d->opd_storage, th);
+ }
+
+out:
RETURN(0);
}
* then we should poll OST immediately once object destroy
* is replied
*/
- d->opd_statfs_fresh_till = cfs_time_shift(-1);
+ d->opd_statfs_fresh_till = ktime_sub_ns(ktime_get(), NSEC_PER_SEC);
del_timer(&d->opd_statfs_timer);
wake_up(&d->opd_pre_waitq);
}
{
int rc;
+ if (d->opd_pre == NULL)
+ return 0;
+
/* XXX: do we really need locking here? */
spin_lock(&d->opd_pre_lock);
rc = osp_precreate_near_empty_nolock(env, d);
struct lu_buf *lb_oid = &oti->osi_lb;
struct lu_buf *lb_oseq = &oti->osi_lb2;
loff_t oid_off;
+ u64 oid;
loff_t oseq_off;
struct thandle *th;
int rc;
/* Note: through f_oid is only 32 bits, it will also write 64 bits
* for oid to keep compatibility with the previous version. */
- lb_oid->lb_buf = &fid->f_oid;
- lb_oid->lb_len = sizeof(u64);
- oid_off = sizeof(u64) * osp->opd_index;
+ oid = fid->f_oid;
+ osp_objid_buf_prep(lb_oid, &oid_off,
+ &oid, osp->opd_index);
- lb_oseq->lb_buf = &fid->f_seq;
- lb_oseq->lb_len = sizeof(u64);
- oseq_off = sizeof(u64) * osp->opd_index;
+ osp_objseq_buf_prep(lb_oseq, &oseq_off,
+ &fid->f_seq, osp->opd_index);
th = dt_trans_create(env, osp->opd_storage);
if (IS_ERR(th))
/* Update last_xxx to the new seq */
spin_lock(&osp->opd_pre_lock);
osp->opd_last_used_fid = *fid;
+ osp_fid_to_obdid(fid, &osp->opd_last_id);
osp->opd_gap_start_fid = *fid;
osp->opd_pre_used_fid = *fid;
osp->opd_pre_last_created_fid = *fid;
*
* The function finds how many objects should be precreated. Then allocates,
* prepares and schedules precreate RPC synchronously. Upon reply the function
- * wake ups the threads waiting for the new objects on this target. If the
+ * wakes up the threads waiting for the new objects on this target. If the
* target wasn't able to create all the objects requested, then the next
- * precreate will be asking less objects (i.e. slow precreate down).
+ * precreate will be asking for fewer objects (i.e. slow precreate down).
*
* \param[in] env LU environment provided by the caller
* \param[in] d OSP device
*fid = d->opd_pre_last_created_fid;
rc = osp_precreate_fids(env, d, fid, &grow);
- if (rc == 1) {
+ if (rc == 1)
/* Current seq has been used up*/
- if (!osp_is_fid_client(d)) {
- osp_pre_update_status(d, -ENOSPC);
- rc = -ENOSPC;
- }
- wake_up(&d->opd_pre_waitq);
- GOTO(out_req, rc);
- }
+ GOTO(out_req, rc = -ENOSPC);
if (!osp_is_fid_client(d)) {
/* Non-FID client will always send seq 0 because of
if (rc) {
CERROR("%s: can't precreate: rc = %d\n", d->opd_obd->obd_name,
rc);
+ if (req->rq_net_err)
+ /* have osp_precreate_reserve() to wait for repeat */
+ rc = -ENOTCONN;
GOTO(out_req, rc);
}
LASSERT(req->rq_transno == 0);
ready:
if (osp_fid_diff(fid, &d->opd_pre_used_fid) <= 0) {
- CERROR("%s: precreate fid "DFID" < local used fid "DFID
+ CERROR("%s: precreate fid "DFID" <= local used fid "DFID
": rc = %d\n", d->opd_obd->obd_name,
PFID(fid), PFID(&d->opd_pre_used_fid), -ESTALE);
GOTO(out_req, rc = -ESTALE);
osp_pre_update_status(d, rc);
wake_up(&d->opd_pre_user_waitq);
+ /* pause to let osp_precreate_reserve to go first */
+ CFS_FAIL_TIMEOUT(OBD_FAIL_OSP_PRECREATE_PAUSE, 2);
+
ptlrpc_req_finished(req);
RETURN(rc);
}
struct ptlrpc_request *req = NULL;
struct obd_import *imp;
struct ost_body *body;
- struct l_wait_info lwi = { 0 };
int update_status = 0;
int rc;
int diff;
* catch all osp_precreate_reserve() calls who find
* "!opd_pre_recovering".
*/
- l_wait_event(d->opd_pre_waitq,
- (!d->opd_pre_reserved && d->opd_recovery_completed) ||
- !osp_precreate_running(d) || d->opd_got_disconnected,
- &lwi);
- if (!osp_precreate_running(d) || d->opd_got_disconnected)
+ wait_event_idle(d->opd_pre_waitq,
+ (!d->opd_pre_reserved && d->opd_recovery_completed) ||
+ !d->opd_pre_task || d->opd_got_disconnected);
+ if (!d->opd_pre_task || d->opd_got_disconnected)
GOTO(out, rc = -EAGAIN);
CDEBUG(D_HA, "%s: going to cleanup orphans since "DFID"\n",
* data is used to make this decision. If the latest result of statfs
* request (rc argument) is not success, then just mark OSP unavailable
* right away.
-
- * Add a bit of hysteresis so this flag isn't continually flapping,
- * and ensure that new files don't get extremely fragmented due to
- * only a small amount of available space in the filesystem.
- * We want to set the ENOSPC when there is less than reserved size
- * free and clear it when there is at least 2*reserved size free space.
- * the function updates current precreation status used: functional or not
*
- * \param[in] d OSP device
- * \param[in] rc new precreate status for device \a d
+ * The new statfs data is passed in \a msfs and needs to be stored into
+ * opd_statfs, but only after the various flags in os_state are set, so
+ * that the new statfs data is not visible without appropriate flags set.
+ * As such, there is no need to clear the flags here, since this is called
+ * with new statfs data, and they should not be cleared if sent from OST.
*
- * \retval 0 on success
- * \retval negative negated errno on error
+ * Add a bit of hysteresis so this flag isn't continually flapping, and
+ * ensure that new files don't get extremely fragmented due to only a
+ * small amount of available space in the filesystem. We want to set
+ * the ENOSPC/ENOINO flags unconditionally when there is less than the
+ * reserved size free, and still copy them from the old state when there
+ * is less than 2*reserved size free space or inodes.
+ *
+ * \param[in] d OSP device
+ * \param[in] msfs statfs data
*/
-void osp_pre_update_status(struct osp_device *d, int rc)
+static void osp_pre_update_msfs(struct osp_device *d, struct obd_statfs *msfs)
{
- struct obd_statfs *msfs = &d->opd_statfs;
- int old = d->opd_pre_status;
- __u64 available;
+ u32 old_state = d->opd_statfs.os_state;
+ u32 reserved_ino_low = 32; /* could be tunable in the future */
+ u32 reserved_ino_high = reserved_ino_low * 2;
+ u64 available_mb;
+
+ /* statfs structure not initialized yet */
+ if (unlikely(!msfs->os_type))
+ return;
+
+ /* if the low and high watermarks have not been initialized yet */
+ if (unlikely(d->opd_reserved_mb_high == 0 &&
+ d->opd_reserved_mb_low == 0)) {
+ /* Use ~0.1% by default to disable object allocation,
+ * and ~0.2% to enable, size in MB, set both watermark
+ */
+ spin_lock(&d->opd_pre_lock);
+ if (d->opd_reserved_mb_high == 0 &&
+ d->opd_reserved_mb_low == 0) {
+ d->opd_reserved_mb_low = ((msfs->os_bsize >> 10) *
+ msfs->os_blocks) >> 20;
+ if (d->opd_reserved_mb_low == 0)
+ d->opd_reserved_mb_low = 1;
+ d->opd_reserved_mb_high =
+ (d->opd_reserved_mb_low << 1) + 1;
+ }
+ spin_unlock(&d->opd_pre_lock);
+ }
- d->opd_pre_status = rc;
- if (rc)
- goto out;
+ available_mb = (msfs->os_bavail * (msfs->os_bsize >> 10)) >> 10;
+ if (msfs->os_ffree < reserved_ino_low)
+ msfs->os_state |= OS_STATFS_ENOINO;
+ else if (msfs->os_ffree <= reserved_ino_high)
+ msfs->os_state |= old_state & OS_STATFS_ENOINO;
+ /* else don't clear flags in new msfs->os_state sent from OST */
+
+ CDEBUG(D_INFO,
+ "%s: blocks=%llu free=%llu avail=%llu avail_mb=%llu hwm_mb=%u files=%llu ffree=%llu state=%x: rc = %d\n",
+ d->opd_obd->obd_name, msfs->os_blocks, msfs->os_bfree,
+ msfs->os_bavail, available_mb, d->opd_reserved_mb_high,
+ msfs->os_files, msfs->os_ffree, msfs->os_state,
+ d->opd_pre_status);
+ if (available_mb < d->opd_reserved_mb_low)
+ msfs->os_state |= OS_STATFS_ENOSPC;
+ else if (available_mb <= d->opd_reserved_mb_high)
+ msfs->os_state |= old_state & OS_STATFS_ENOSPC;
+ /* else don't clear flags in new msfs->os_state sent from OST */
+
+ if (msfs->os_state & (OS_STATFS_ENOINO | OS_STATFS_ENOSPC)) {
+ d->opd_pre_status = -ENOSPC;
+ if (!(old_state & (OS_STATFS_ENOINO | OS_STATFS_ENOSPC)))
+ CDEBUG(D_INFO, "%s: full: state=%x: rc = %x\n",
+ d->opd_obd->obd_name, msfs->os_state,
+ d->opd_pre_status);
+ CDEBUG(D_INFO, "uncommitted changes=%u in_progress=%u\n",
+ atomic_read(&d->opd_sync_changes),
+ atomic_read(&d->opd_sync_rpcs_in_progress));
+ } else if (old_state & (OS_STATFS_ENOINO | OS_STATFS_ENOSPC)) {
+ d->opd_pre_status = 0;
+ spin_lock(&d->opd_pre_lock);
+ d->opd_pre_create_slow = 0;
+ d->opd_pre_create_count = OST_MIN_PRECREATE;
+ spin_unlock(&d->opd_pre_lock);
+ wake_up(&d->opd_pre_waitq);
- if (likely(msfs->os_type)) {
- if (unlikely(d->opd_reserved_mb_high == 0 &&
- d->opd_reserved_mb_low == 0)) {
- /* Use ~0.1% by default to disable object allocation,
- * and ~0.2% to enable, size in MB, set both watermark
- */
- spin_lock(&d->opd_pre_lock);
- if (d->opd_reserved_mb_high == 0 &&
- d->opd_reserved_mb_low == 0) {
- d->opd_reserved_mb_low =
- ((msfs->os_bsize >> 10) *
- msfs->os_blocks) >> 20;
- if (d->opd_reserved_mb_low == 0)
- d->opd_reserved_mb_low = 1;
- d->opd_reserved_mb_high =
- (d->opd_reserved_mb_low << 1) + 1;
- }
- spin_unlock(&d->opd_pre_lock);
- }
- /* in MB */
- available = (msfs->os_bavail * (msfs->os_bsize >> 10)) >> 10;
- if (msfs->os_ffree < 32)
- msfs->os_state |= OS_STATE_ENOINO;
- else if (msfs->os_ffree > 64)
- msfs->os_state &= ~OS_STATE_ENOINO;
-
- if (available < d->opd_reserved_mb_low)
- msfs->os_state |= OS_STATE_ENOSPC;
- else if (available > d->opd_reserved_mb_high)
- msfs->os_state &= ~OS_STATE_ENOSPC;
- if (msfs->os_state & (OS_STATE_ENOINO | OS_STATE_ENOSPC)) {
- d->opd_pre_status = -ENOSPC;
- if (old != -ENOSPC)
- CDEBUG(D_INFO, "%s: status: %llu blocks, %llu "
- "free, %llu avail, %llu MB avail, %u "
- "hwm -> %d: rc = %d\n",
- d->opd_obd->obd_name, msfs->os_blocks,
- msfs->os_bfree, msfs->os_bavail,
- available, d->opd_reserved_mb_high,
- d->opd_pre_status, rc);
- CDEBUG(D_INFO,
- "non-committed changes: %u, in progress: %u\n",
- atomic_read(&d->opd_syn_changes),
- atomic_read(&d->opd_syn_rpc_in_progress));
- } else if (unlikely(old == -ENOSPC)) {
- d->opd_pre_status = 0;
- spin_lock(&d->opd_pre_lock);
- d->opd_pre_create_slow = 0;
- d->opd_pre_create_count = OST_MIN_PRECREATE;
- spin_unlock(&d->opd_pre_lock);
- wake_up(&d->opd_pre_waitq);
-
- CDEBUG(D_INFO, "%s: space available: %llu blocks, %llu"
- " free, %llu avail, %lluMB avail, %u lwm"
- " -> %d: rc = %d\n", d->opd_obd->obd_name,
- msfs->os_blocks, msfs->os_bfree, msfs->os_bavail,
- available, d->opd_reserved_mb_low,
- d->opd_pre_status, rc);
- }
+ CDEBUG(D_INFO,
+ "%s: available: state=%x: rc = %d\n",
+ d->opd_obd->obd_name, msfs->os_state,
+ d->opd_pre_status);
+ } else {
+ /* we only get here if rc == 0 in the caller */
+ d->opd_pre_status = 0;
}
-out:
- wake_up(&d->opd_pre_user_waitq);
+
+ /* Object precreation skipped on OST if manually disabled */
+ if (d->opd_pre_max_create_count == 0)
+ msfs->os_state |= OS_STATFS_NOPRECREATE;
+ /* else don't clear flags in new msfs->os_state sent from OST */
+
+ /* copy only new statfs state to make it visible to MDS threads */
+ if (&d->opd_statfs != msfs)
+ d->opd_statfs = *msfs;
}
/**
RETURN(rc);
}
+struct opt_args {
+ struct osp_device *opta_dev;
+ struct lu_env opta_env;
+ struct completion *opta_started;
+};
/**
* The core of precreate functionality
*
* \retval 0 on success
* \retval negative negated errno on error
*/
-static int osp_precreate_thread(void *_arg)
+static int osp_precreate_thread(void *_args)
{
- struct osp_device *d = _arg;
- struct ptlrpc_thread *thread = &d->opd_pre_thread;
- struct l_wait_info lwi = { 0 };
- struct l_wait_info lwi2 = LWI_TIMEOUT(cfs_time_seconds(5),
- back_to_sleep, NULL);
- struct lu_env env;
+ struct opt_args *args = _args;
+ struct osp_device *d = args->opta_dev;
+ struct lu_env *env = &args->opta_env;
int rc;
ENTRY;
- rc = lu_env_init(&env, d->opd_dt_dev.dd_lu_dev.ld_type->ldt_ctx_tags);
- if (rc) {
- CERROR("%s: init env error: rc = %d\n", d->opd_obd->obd_name,
- rc);
-
- spin_lock(&d->opd_pre_lock);
- thread->t_flags = SVC_STOPPED;
- spin_unlock(&d->opd_pre_lock);
- wake_up(&thread->t_ctl_waitq);
-
- RETURN(rc);
- }
-
- spin_lock(&d->opd_pre_lock);
- thread->t_flags = SVC_RUNNING;
- spin_unlock(&d->opd_pre_lock);
- wake_up(&thread->t_ctl_waitq);
-
- while (osp_precreate_running(d)) {
+ complete(args->opta_started);
+ while (!kthread_should_stop()) {
/*
* need to be connected to OST
*/
- while (osp_precreate_running(d)) {
- if (d->opd_pre_recovering &&
+ while (!kthread_should_stop()) {
+ if ((d->opd_pre == NULL || d->opd_pre_recovering) &&
d->opd_imp_connected &&
!d->opd_got_disconnected)
break;
- l_wait_event(d->opd_pre_waitq,
- !osp_precreate_running(d) ||
- d->opd_new_connection,
- &lwi);
+ wait_event_idle(d->opd_pre_waitq,
+ kthread_should_stop() ||
+ d->opd_new_connection);
if (!d->opd_new_connection)
continue;
+ OBD_FAIL_TIMEOUT(OBD_FAIL_OSP_CON_EVENT_DELAY,
+ cfs_fail_val);
d->opd_new_connection = 0;
d->opd_got_disconnected = 0;
break;
}
- if (!osp_precreate_running(d))
+ if (kthread_should_stop())
break;
- LASSERT(d->opd_obd->u.cli.cl_seq != NULL);
- /* Sigh, fid client is not ready yet */
- if (d->opd_obd->u.cli.cl_seq->lcs_exp == NULL)
- continue;
+ if (d->opd_pre) {
+ LASSERT(d->opd_obd->u.cli.cl_seq != NULL);
+ /* Sigh, fid client is not ready yet */
+ if (d->opd_obd->u.cli.cl_seq->lcs_exp == NULL)
+ continue;
- /* Init fid for osp_precreate if necessary */
- rc = osp_init_pre_fid(d);
- if (rc != 0) {
- class_export_put(d->opd_exp);
- d->opd_obd->u.cli.cl_seq->lcs_exp = NULL;
- CERROR("%s: init pre fid error: rc = %d\n",
- d->opd_obd->obd_name, rc);
- continue;
+ /* Init fid for osp_precreate if necessary */
+ rc = osp_init_pre_fid(d);
+ if (rc != 0) {
+ class_export_put(d->opd_exp);
+ d->opd_obd->u.cli.cl_seq->lcs_exp = NULL;
+ CERROR("%s: init pre fid error: rc = %d\n",
+ d->opd_obd->obd_name, rc);
+ continue;
+ }
}
- if (osp_statfs_update(d)) {
- l_wait_event(d->opd_pre_waitq,
- !osp_precreate_running(d), &lwi2);
+ if (osp_statfs_update(env, d)) {
+ if (wait_event_idle_timeout(d->opd_pre_waitq,
+ kthread_should_stop(),
+ cfs_time_seconds(5)) == 0)
+ l_wait_event_abortable(
+ d->opd_pre_waitq,
+ kthread_should_stop());
continue;
}
- /*
- * Clean up orphans or recreate missing objects.
- */
- rc = osp_precreate_cleanup_orphans(&env, d);
- if (rc != 0) {
- schedule_timeout_interruptible(cfs_time_seconds(1));
- continue;
+ if (d->opd_pre) {
+ /*
+ * Clean up orphans or recreate missing objects.
+ */
+ rc = osp_precreate_cleanup_orphans(env, d);
+ if (rc != 0) {
+ schedule_timeout_interruptible(cfs_time_seconds(1));
+ continue;
+ }
}
+
/*
* connected, can handle precreates now
*/
- while (osp_precreate_running(d)) {
- l_wait_event(d->opd_pre_waitq,
- !osp_precreate_running(d) ||
- osp_precreate_near_empty(&env, d) ||
- osp_statfs_need_update(d) ||
- d->opd_got_disconnected, &lwi);
-
- if (!osp_precreate_running(d))
+ while (!kthread_should_stop()) {
+ wait_event_idle(d->opd_pre_waitq,
+ kthread_should_stop() ||
+ osp_precreate_near_empty(env, d) ||
+ osp_statfs_need_update(d) ||
+ d->opd_got_disconnected);
+
+ if (kthread_should_stop())
break;
/* something happened to the connection
break;
if (osp_statfs_need_update(d))
- if (osp_statfs_update(d))
+ if (osp_statfs_update(env, d))
break;
+ if (d->opd_pre == NULL)
+ continue;
+
/* To avoid handling different seq in precreate/orphan
* cleanup, it will hold precreate until current seq is
* used up. */
- if (unlikely(osp_precreate_end_seq(&env, d) &&
- !osp_create_end_seq(&env, d)))
+ if (unlikely(osp_precreate_end_seq(env, d) &&
+ !osp_create_end_seq(env, d)))
continue;
- if (unlikely(osp_precreate_end_seq(&env, d) &&
- osp_create_end_seq(&env, d))) {
+ if (unlikely(osp_precreate_end_seq(env, d) &&
+ osp_create_end_seq(env, d))) {
LCONSOLE_INFO("%s:%#llx is used up."
" Update to new seq\n",
d->opd_obd->obd_name,
fid_seq(&d->opd_pre_last_created_fid));
- rc = osp_precreate_rollover_new_seq(&env, d);
+ rc = osp_precreate_rollover_new_seq(env, d);
if (rc)
continue;
}
- if (osp_precreate_near_empty(&env, d)) {
- rc = osp_precreate_send(&env, d);
+ if (osp_precreate_near_empty(env, d)) {
+ rc = osp_precreate_send(env, d);
/* osp_precreate_send() sets opd_pre_status
* in case of error, that prevent the using of
* failed device. */
}
}
- thread->t_flags = SVC_STOPPED;
- lu_env_fini(&env);
- wake_up(&thread->t_ctl_waitq);
+ lu_env_fini(env);
+ OBD_FREE_PTR(args);
RETURN(0);
}
return 1;
/* ready if OST reported no space and no destroys in progress */
- if (atomic_read(&d->opd_syn_changes) +
- atomic_read(&d->opd_syn_rpc_in_progress) == 0 &&
+ if (atomic_read(&d->opd_sync_changes) +
+ atomic_read(&d->opd_sync_rpcs_in_progress) == 0 &&
d->opd_pre_status == -ENOSPC)
return 1;
return 0;
}
-static int osp_precreate_timeout_condition(void *data)
-{
- struct osp_device *d = data;
-
- CDEBUG(D_HA, "%s: slow creates, last="DFID", next="DFID", "
- "reserved=%llu, syn_changes=%u, "
- "syn_rpc_in_progress=%d, status=%d\n",
- d->opd_obd->obd_name, PFID(&d->opd_pre_last_created_fid),
- PFID(&d->opd_pre_used_fid), d->opd_pre_reserved,
- atomic_read(&d->opd_syn_changes),
- atomic_read(&d->opd_syn_rpc_in_progress),
- d->opd_pre_status);
-
- return 1;
-}
-
/**
* Reserve object in precreate pool
*
* \retval -EAGAIN try later, slow precreation in progress
* \retval -EIO when no access to OST
*/
-int osp_precreate_reserve(const struct lu_env *env, struct osp_device *d)
+int osp_precreate_reserve(const struct lu_env *env, struct osp_device *d,
+ bool can_block)
{
- struct l_wait_info lwi;
- cfs_time_t expire = cfs_time_shift(obd_timeout);
- int precreated, rc;
+ time64_t expire = ktime_get_seconds() + obd_timeout;
+ int precreated, rc, synced = 0;
ENTRY;
* wait till that is done - some space might be released
*/
if (unlikely(rc == -ENOSPC)) {
- if (atomic_read(&d->opd_syn_changes)) {
+ if (atomic_read(&d->opd_sync_changes) && synced == 0) {
/* force local commit to release space */
dt_commit_async(env, d->opd_storage);
+ osp_sync_check_for_work(d);
+ synced = 1;
}
- if (atomic_read(&d->opd_syn_rpc_in_progress)) {
- /* just wait till destroys are done */
- /* see l_wait_even() few lines below */
+ if (atomic_read(&d->opd_sync_rpcs_in_progress)) {
+ /* just wait till destroys are done
+ * see wait_event_idle_timeout() below
+ */
}
- if (atomic_read(&d->opd_syn_changes) +
- atomic_read(&d->opd_syn_rpc_in_progress) == 0) {
+ if (atomic_read(&d->opd_sync_changes) +
+ atomic_read(&d->opd_sync_rpcs_in_progress) == 0) {
/* no hope for free space */
break;
}
/* XXX: don't wake up if precreation is in progress */
wake_up(&d->opd_pre_waitq);
- lwi = LWI_TIMEOUT(expire - cfs_time_current(),
- osp_precreate_timeout_condition, d);
- if (cfs_time_aftereq(cfs_time_current(), expire)) {
+ if (ktime_get_seconds() >= expire) {
rc = -ETIMEDOUT;
break;
}
- l_wait_event(d->opd_pre_user_waitq,
- osp_precreate_ready_condition(env, d), &lwi);
+ if (!can_block) {
+ LASSERT(d->opd_pre);
+ rc = -ENOBUFS;
+ break;
+ }
+
+ if (wait_event_idle_timeout(
+ d->opd_pre_user_waitq,
+ osp_precreate_ready_condition(env, d),
+ cfs_time_seconds(obd_timeout)) == 0) {
+ CDEBUG(D_HA,
+ "%s: slow creates, last="DFID", next="DFID", "
+ "reserved=%llu, sync_changes=%u, "
+ "sync_rpcs_in_progress=%d, status=%d\n",
+ d->opd_obd->obd_name,
+ PFID(&d->opd_pre_last_created_fid),
+ PFID(&d->opd_pre_used_fid), d->opd_pre_reserved,
+ atomic_read(&d->opd_sync_changes),
+ atomic_read(&d->opd_sync_rpcs_in_progress),
+ d->opd_pre_status);
+ }
}
RETURN(rc);
int osp_precreate_get_fid(const struct lu_env *env, struct osp_device *d,
struct lu_fid *fid)
{
+ struct lu_fid *pre_used_fid = &d->opd_pre_used_fid;
/* grab next id from the pool */
spin_lock(&d->opd_pre_lock);
PFID(&d->opd_pre_used_fid),
PFID(&d->opd_pre_last_created_fid));
+ /*
+ * When sequence is used up, new one should be allocated in
+ * osp_precreate_rollover_new_seq. So ASSERT here to avoid
+ * objid overflow.
+ */
+ LASSERTF(osp_fid_end_seq(env, pre_used_fid) == 0,
+ "next fid "DFID" last created fid "DFID"\n",
+ PFID(&d->opd_pre_used_fid),
+ PFID(&d->opd_pre_last_created_fid));
+ /* Non IDIF fids shoulnd't get here with oid == 0xFFFFFFFF. */
+ if (fid_is_idif(pre_used_fid) &&
+ unlikely(fid_oid(pre_used_fid) == LUSTRE_DATA_SEQ_MAX_WIDTH))
+ pre_used_fid->f_seq++;
+
d->opd_pre_used_fid.f_oid++;
memcpy(fid, &d->opd_pre_used_fid, sizeof(*fid));
d->opd_pre_reserved--;
* all reservations are released, see comment in
* osp_precreate_thread() just before orphan cleanup
*/
- if (unlikely(d->opd_pre_reserved == 0 && d->opd_pre_status))
+ if (unlikely(d->opd_pre_reserved == 0 &&
+ (d->opd_pre_recovering || d->opd_pre_status)))
wake_up(&d->opd_pre_waitq);
return 0;
if (req == NULL)
RETURN(-ENOMEM);
- /* XXX: capa support? */
- /* osc_set_capa_size(req, &RMF_CAPA1, capa); */
rc = ptlrpc_request_pack(req, LUSTRE_OST_VERSION, OST_PUNCH);
if (rc) {
ptlrpc_request_free(req);
* XXX: decide how do we do here with resend
* if we don't resend, then client may see wrong file size
* if we do resend, then MDS thread can get stuck for quite long
- * and if we don't resend, then client will also get -EWOULDBLOCK !!
+ * and if we don't resend, then client will also get -EAGAIN !!
* (see LU-7975 and sanity/test_27F use cases)
* but let's decide not to resend/delay this truncate request to OST
* and allow Client to decide to resend, in a less agressive way from
* after_reply(), by returning -EINPROGRESS instead of
- * -EAGAIN/-EWOULDBLOCK upon return from ptlrpc_queue_wait() at the
+ * -EAGAIN/-EAGAIN upon return from ptlrpc_queue_wait() at the
* end of this routine
*/
req->rq_no_resend = req->rq_no_delay = 1;
rc = ptlrpc_queue_wait(req);
if (rc) {
- /* -EWOULDBLOCK/-EAGAIN means OST is unreachable at the moment
+ /* -EAGAIN/-EWOULDBLOCK means OST is unreachable at the moment
* since we have decided not to resend/delay, but this could
* lead to wrong size to be seen at Client side and even process
* trying to open to exit/fail if not itself handling -EAGAIN.
* So it should be better to return -EINPROGRESS instead and
* leave the decision to resend at Client side in after_reply()
*/
- if (rc == -EWOULDBLOCK) {
+ if (rc == -EAGAIN) {
rc = -EINPROGRESS;
CDEBUG(D_HA, "returning -EINPROGRESS instead of "
"-EWOULDBLOCK/-EAGAIN to allow Client to "
*/
int osp_init_precreate(struct osp_device *d)
{
- struct l_wait_info lwi = { 0 };
- struct task_struct *task;
-
ENTRY;
OBD_ALLOC_PTR(d->opd_pre);
RETURN(-ENOMEM);
/* initially precreation isn't ready */
+ init_waitqueue_head(&d->opd_pre_user_waitq);
d->opd_pre_status = -EAGAIN;
fid_zero(&d->opd_pre_used_fid);
d->opd_pre_used_fid.f_oid = 1;
fid_zero(&d->opd_pre_last_created_fid);
d->opd_pre_last_created_fid.f_oid = 1;
+ d->opd_last_id = 0;
d->opd_pre_reserved = 0;
d->opd_got_disconnected = 1;
d->opd_pre_create_slow = 0;
d->opd_reserved_mb_high = 0;
d->opd_reserved_mb_low = 0;
+ RETURN(0);
+}
+
+/**
+ * Finish precreate functionality of OSP
+ *
+ *
+ * Asks all the activity (the thread, update timer) to stop, then
+ * wait till that is done.
+ *
+ * \param[in] d OSP device
+ */
+void osp_precreate_fini(struct osp_device *d)
+{
+ ENTRY;
+
+ if (d->opd_pre == NULL)
+ RETURN_EXIT;
+
+ OBD_FREE_PTR(d->opd_pre);
+ d->opd_pre = NULL;
+
+ EXIT;
+}
+
+int osp_init_statfs(struct osp_device *d)
+{
+ struct task_struct *task;
+ struct opt_args *args;
+ DECLARE_COMPLETION_ONSTACK(started);
+ int rc;
+
+ ENTRY;
+
spin_lock_init(&d->opd_pre_lock);
init_waitqueue_head(&d->opd_pre_waitq);
- init_waitqueue_head(&d->opd_pre_user_waitq);
- thread_set_flags(&d->opd_pre_thread, SVC_INIT);
- init_waitqueue_head(&d->opd_pre_thread.t_ctl_waitq);
/*
* Initialize statfs-related things
*/
- d->opd_statfs_maxage = 5; /* default update interval */
- d->opd_statfs_fresh_till = cfs_time_shift(-1000);
- CDEBUG(D_OTHER, "current %llu, fresh till %llu\n",
- (unsigned long long)cfs_time_current(),
- (unsigned long long)d->opd_statfs_fresh_till);
- setup_timer(&d->opd_statfs_timer, osp_statfs_timer_cb,
- (unsigned long)d);
+ d->opd_statfs_maxage = 5; /* defaultupdate interval */
+ d->opd_statfs_fresh_till = ktime_sub_ns(ktime_get(),
+ 1000 * NSEC_PER_SEC);
+ CDEBUG(D_OTHER, "current %lldns, fresh till %lldns\n",
+ ktime_get_ns(),
+ ktime_to_ns(d->opd_statfs_fresh_till));
+ cfs_timer_setup(&d->opd_statfs_timer, osp_statfs_timer_cb,
+ (unsigned long)d, 0);
if (d->opd_storage->dd_rdonly)
RETURN(0);
+ OBD_ALLOC_PTR(args);
+ if (!args)
+ RETURN(0);
+ args->opta_dev = d;
+ args->opta_started = &started;
+ rc = lu_env_init(&args->opta_env,
+ d->opd_dt_dev.dd_lu_dev.ld_type->ldt_ctx_tags);
+ if (rc) {
+ CERROR("%s: init env error: rc = %d\n", d->opd_obd->obd_name,
+ rc);
+ OBD_FREE_PTR(args);
+ RETURN(0);
+ }
+
/*
* start thread handling precreation and statfs updates
*/
- task = kthread_run(osp_precreate_thread, d,
- "osp-pre-%u-%u", d->opd_index, d->opd_group);
+ task = kthread_create(osp_precreate_thread, args,
+ "osp-pre-%u-%u", d->opd_index, d->opd_group);
if (IS_ERR(task)) {
CERROR("can't start precreate thread %ld\n", PTR_ERR(task));
+ lu_env_fini(&args->opta_env);
+ OBD_FREE_PTR(args);
RETURN(PTR_ERR(task));
}
-
- l_wait_event(d->opd_pre_thread.t_ctl_waitq,
- osp_precreate_running(d) || osp_precreate_stopped(d),
- &lwi);
+ d->opd_pre_task = task;
+ wake_up_process(task);
+ wait_for_completion(&started);
RETURN(0);
}
-/**
- * Finish precreate functionality of OSP
- *
- *
- * Asks all the activity (the thread, update timer) to stop, then
- * wait till that is done.
- *
- * \param[in] d OSP device
- */
-void osp_precreate_fini(struct osp_device *d)
+void osp_statfs_fini(struct osp_device *d)
{
- struct ptlrpc_thread *thread = &d->opd_pre_thread;
+ struct task_struct *task = d->opd_pre_task;
ENTRY;
del_timer(&d->opd_statfs_timer);
- if (d->opd_pre == NULL)
- RETURN_EXIT;
-
- if (!thread_is_init(thread) && !thread_is_stopped(thread)) {
- thread->t_flags = SVC_STOPPING;
- wake_up(&d->opd_pre_waitq);
- wait_event(thread->t_ctl_waitq, thread_is_stopped(thread));
- }
-
- OBD_FREE_PTR(d->opd_pre);
- d->opd_pre = NULL;
+ d->opd_pre_task = NULL;
+ if (task)
+ kthread_stop(task);
EXIT;
}
-
git://git.whamcloud.com / fs / lustre-release.git / blobdiff