* GPL HEADER END
*/
/*
- * Copyright (c) 2012, 2013, Intel Corporation.
- * Use is subject to license terms.
* Copyright (c) 2011, 2012 Commissariat a l'energie atomique et aux energies
* alternatives
+ *
+ * Copyright (c) 2013, 2017, Intel Corporation.
+ * Use is subject to license terms.
*/
/*
* lustre/mdt/mdt_coordinator.c
#define DEBUG_SUBSYSTEM S_MDS
+#include <linux/kthread.h>
#include <obd_support.h>
-#include <lustre_net.h>
#include <lustre_export.h>
#include <obd.h>
-#include <obd_lov.h>
#include <lprocfs_status.h>
#include <lustre_log.h>
+#include <lustre_kernelcomm.h>
#include "mdt_internal.h"
static struct lprocfs_vars lprocfs_mdt_hsm_vars[];
struct hsm_action_item *hai;
char buf[12];
- CDEBUG(level, "%s: HAL header: version %X count %d compound "LPX64
- " archive_id %d flags "LPX64"\n",
+ CDEBUG(level, "%s: HAL header: version %X count %d compound %#llx"
+ " archive_id %d flags %#llx\n",
prefix, hal->hal_version, hal->hal_count,
hal->hal_compound_id, hal->hal_archive_id, hal->hal_flags);
for (i = 0; i < hal->hal_count; i++) {
sz = hai->hai_len - sizeof(*hai);
CDEBUG(level, "%s %d: fid="DFID" dfid="DFID
- " compound/cookie="LPX64"/"LPX64
- " action=%s extent="LPX64"-"LPX64" gid="LPX64
+ " compound/cookie=%#llx/%#llx"
+ " action=%s extent=%#llx-%#llx gid=%#llx"
" datalen=%d data=[%s]\n",
prefix, i,
PFID(&hai->hai_fid), PFID(&hai->hai_dfid),
* data passed to llog_cat_process() callback
* to scan requests and take actions
*/
+struct hsm_scan_request {
+ int hal_sz;
+ int hal_used_sz;
+ struct hsm_action_list *hal;
+};
+
struct hsm_scan_data {
- struct mdt_thread_info *mti;
- char fs_name[MTI_NAME_MAXLEN+1];
- /* request to be send to agents */
- int request_sz; /** allocated size */
- int max_requests; /** vector size */
- int request_cnt; /** used count */
- struct {
- int hal_sz;
- int hal_used_sz;
- struct hsm_action_list *hal;
- } *request;
- /* records to be canceled */
- int max_cookie; /** vector size */
- int cookie_cnt; /** used count */
- __u64 *cookies;
+ struct mdt_thread_info *hsd_mti;
+ char hsd_fsname[MTI_NAME_MAXLEN + 1];
+ /* are we scanning the logs for housekeeping, or just looking
+ * for new work?
+ */
+ bool hsd_housekeeping;
+ int hsd_action_count;
+ int hsd_request_len; /* array alloc len */
+ int hsd_request_count; /* array used count */
+ struct hsm_scan_request *hsd_request;
};
+static int mdt_cdt_waiting_cb(const struct lu_env *env,
+ struct mdt_device *mdt,
+ struct llog_handle *llh,
+ struct llog_agent_req_rec *larr,
+ struct hsm_scan_data *hsd)
+{
+ struct coordinator *cdt = &mdt->mdt_coordinator;
+ struct hsm_scan_request *request;
+ struct hsm_action_item *hai;
+ int i;
+
+ /* Are agents full? */
+ if (hsd->hsd_action_count + atomic_read(&cdt->cdt_request_count) >=
+ cdt->cdt_max_requests) {
+ if (hsd->hsd_housekeeping) {
+ /* Unknown request and no more room for a new
+ * request. Continue to scan to find other
+ * entries for already existing requests. */
+ RETURN(0);
+ } else {
+ /* We cannot send and more requests, stop
+ * here. There might be more known requests
+ * that could be merged, but this avoid
+ * analyzing too many llogs for minor
+ * gains. */
+ RETURN(LLOG_PROC_BREAK);
+ }
+ }
+
+ /* first search whether the request is found in the list we
+ * have built. */
+ request = NULL;
+ for (i = 0; i < hsd->hsd_request_count; i++) {
+ if (hsd->hsd_request[i].hal->hal_compound_id ==
+ larr->arr_compound_id) {
+ request = &hsd->hsd_request[i];
+ break;
+ }
+ }
+
+ if (!request) {
+ struct hsm_action_list *hal;
+
+ if (hsd->hsd_request_count == hsd->hsd_request_len) {
+ /* Logic as above. */
+ if (hsd->hsd_housekeeping)
+ RETURN(0);
+ else
+ RETURN(LLOG_PROC_BREAK);
+ }
+
+ request = &hsd->hsd_request[hsd->hsd_request_count];
+
+ /* allocates hai vector size just needs to be large
+ * enough */
+ request->hal_sz = sizeof(*request->hal) +
+ cfs_size_round(MTI_NAME_MAXLEN + 1) +
+ 2 * cfs_size_round(larr->arr_hai.hai_len);
+ OBD_ALLOC(hal, request->hal_sz);
+ if (!hal)
+ RETURN(-ENOMEM);
+
+ hal->hal_version = HAL_VERSION;
+ strlcpy(hal->hal_fsname, hsd->hsd_fsname, MTI_NAME_MAXLEN + 1);
+ hal->hal_compound_id = larr->arr_compound_id;
+ hal->hal_archive_id = larr->arr_archive_id;
+ hal->hal_flags = larr->arr_flags;
+ hal->hal_count = 0;
+ request->hal_used_sz = hal_size(hal);
+ request->hal = hal;
+ hsd->hsd_request_count++;
+ hai = hai_first(hal);
+ } else {
+ /* request is known */
+ /* we check if record archive num is the same as the
+ * known request, if not we will serve it in multiple
+ * time because we do not know if the agent can serve
+ * multiple backend a use case is a compound made of
+ * multiple restore where the files are not archived
+ * in the same backend */
+ if (larr->arr_archive_id != request->hal->hal_archive_id)
+ RETURN(0);
+
+ if (request->hal_sz < request->hal_used_sz +
+ cfs_size_round(larr->arr_hai.hai_len)) {
+ /* Not enough room, need an extension */
+ void *hal_buffer;
+ int sz;
+
+ sz = 2 * request->hal_sz;
+ OBD_ALLOC(hal_buffer, sz);
+ if (!hal_buffer)
+ RETURN(-ENOMEM);
+ memcpy(hal_buffer, request->hal, request->hal_used_sz);
+ OBD_FREE(request->hal, request->hal_sz);
+ request->hal = hal_buffer;
+ request->hal_sz = sz;
+ }
+
+ hai = hai_first(request->hal);
+ for (i = 0; i < request->hal->hal_count; i++)
+ hai = hai_next(hai);
+ }
+
+ memcpy(hai, &larr->arr_hai, larr->arr_hai.hai_len);
+ hai->hai_cookie = larr->arr_hai.hai_cookie;
+ hai->hai_gid = larr->arr_hai.hai_gid;
+
+ request->hal_used_sz += cfs_size_round(hai->hai_len);
+ request->hal->hal_count++;
+
+ hsd->hsd_action_count++;
+
+ if (hai->hai_action != HSMA_CANCEL)
+ cdt_agent_record_hash_add(cdt, hai->hai_cookie,
+ llh->lgh_hdr->llh_cat_idx,
+ larr->arr_hdr.lrh_index);
+
+ RETURN(0);
+}
+
+static int mdt_cdt_started_cb(const struct lu_env *env,
+ struct mdt_device *mdt,
+ struct llog_handle *llh,
+ struct llog_agent_req_rec *larr,
+ struct hsm_scan_data *hsd)
+{
+ struct coordinator *cdt = &mdt->mdt_coordinator;
+ struct hsm_action_item *hai = &larr->arr_hai;
+ struct cdt_agent_req *car;
+ time64_t now = ktime_get_real_seconds();
+ time64_t last;
+ int cl_flags;
+ int rc;
+
+ if (!hsd->hsd_housekeeping)
+ RETURN(0);
+
+ /* we search for a running request
+ * error may happen if coordinator crashes or stopped
+ * with running request
+ */
+ car = mdt_cdt_find_request(cdt, hai->hai_cookie);
+ if (car == NULL) {
+ last = larr->arr_req_change;
+ } else {
+ last = car->car_req_update;
+ }
+
+ /* test if request too long, if yes cancel it
+ * the same way the copy tool acknowledge a cancel request */
+ if (now <= last + cdt->cdt_active_req_timeout)
+ GOTO(out_car, rc = 0);
+
+ dump_llog_agent_req_rec("request timed out, start cleaning", larr);
+
+ if (car != NULL) {
+ car->car_req_update = now;
+ mdt_hsm_agent_update_statistics(cdt, 0, 1, 0, &car->car_uuid);
+ /* Remove car from memory list (LU-9075) */
+ mdt_cdt_remove_request(cdt, hai->hai_cookie);
+ }
+
+ /* Emit a changelog record for the failed action.*/
+ cl_flags = 0;
+ hsm_set_cl_error(&cl_flags, ECANCELED);
+
+ switch (hai->hai_action) {
+ case HSMA_ARCHIVE:
+ hsm_set_cl_event(&cl_flags, HE_ARCHIVE);
+ break;
+ case HSMA_RESTORE:
+ hsm_set_cl_event(&cl_flags, HE_RESTORE);
+ break;
+ case HSMA_REMOVE:
+ hsm_set_cl_event(&cl_flags, HE_REMOVE);
+ break;
+ case HSMA_CANCEL:
+ hsm_set_cl_event(&cl_flags, HE_CANCEL);
+ break;
+ default:
+ /* Unknown record type, skip changelog. */
+ cl_flags = 0;
+ break;
+ }
+
+ if (cl_flags != 0)
+ mo_changelog(env, CL_HSM, cl_flags, mdt->mdt_child,
+ &hai->hai_fid);
+
+ if (hai->hai_action == HSMA_RESTORE)
+ cdt_restore_handle_del(hsd->hsd_mti, cdt, &hai->hai_fid);
+
+ larr->arr_status = ARS_CANCELED;
+ larr->arr_req_change = now;
+ rc = llog_write(hsd->hsd_mti->mti_env, llh, &larr->arr_hdr,
+ larr->arr_hdr.lrh_index);
+ if (rc < 0) {
+ CERROR("%s: cannot update agent log: rc = %d\n",
+ mdt_obd_name(mdt), rc);
+ rc = LLOG_DEL_RECORD;
+ }
+
+ /* ct has completed a request, so a slot is available,
+ * signal the coordinator to find new work */
+ mdt_hsm_cdt_event(cdt);
+out_car:
+ if (car != NULL)
+ mdt_cdt_put_request(car);
+
+ RETURN(rc);
+}
+
/**
* llog_cat_process() callback, used to:
* - find waiting request and start action
struct llog_rec_hdr *hdr,
void *data)
{
- const struct llog_agent_req_rec *larr;
- struct hsm_scan_data *hsd;
- struct hsm_action_item *hai;
- struct mdt_device *mdt;
- struct coordinator *cdt;
- int rc;
+ struct llog_agent_req_rec *larr = (struct llog_agent_req_rec *)hdr;
+ struct hsm_scan_data *hsd = data;
+ struct mdt_device *mdt = hsd->hsd_mti->mti_mdt;
+ struct coordinator *cdt = &mdt->mdt_coordinator;
ENTRY;
- hsd = data;
- mdt = hsd->mti->mti_mdt;
- cdt = &mdt->mdt_coordinator;
-
larr = (struct llog_agent_req_rec *)hdr;
dump_llog_agent_req_rec("mdt_coordinator_cb(): ", larr);
switch (larr->arr_status) {
- case ARS_WAITING: {
- int i, empty_slot, found;
-
- /* Are agents full? */
- if (atomic_read(&cdt->cdt_request_count) ==
- cdt->cdt_max_requests)
- break;
-
- /* first search if the request if known in the list we have
- * build and if there is room in the request vector */
- empty_slot = -1;
- found = -1;
- for (i = 0; i < hsd->max_requests &&
- (empty_slot == -1 || found == -1); i++) {
- if (hsd->request[i].hal == NULL) {
- empty_slot = i;
- continue;
- }
- if (hsd->request[i].hal->hal_compound_id ==
- larr->arr_compound_id) {
- found = i;
- continue;
- }
- }
- if (found == -1 && empty_slot == -1)
- /* unknown request and no more room for new request,
- * continue scan for to find other entries for
- * already found request
- */
+ case ARS_WAITING:
+ RETURN(mdt_cdt_waiting_cb(env, mdt, llh, larr, hsd));
+ case ARS_STARTED:
+ RETURN(mdt_cdt_started_cb(env, mdt, llh, larr, hsd));
+ default:
+ if (!hsd->hsd_housekeeping)
RETURN(0);
- if (found == -1) {
- struct hsm_action_list *hal;
-
- /* request is not already known */
- /* allocates hai vector size just needs to be large
- * enough */
- hsd->request[empty_slot].hal_sz =
- sizeof(*hsd->request[empty_slot].hal) +
- cfs_size_round(MTI_NAME_MAXLEN+1) +
- 2 * cfs_size_round(larr->arr_hai.hai_len);
- OBD_ALLOC(hal, hsd->request[empty_slot].hal_sz);
- if (!hal) {
- CERROR("%s: Cannot allocate memory (%d o)"
- "for compound "LPX64"\n",
- mdt_obd_name(mdt),
- hsd->request[i].hal_sz,
- larr->arr_compound_id);
- RETURN(-ENOMEM);
- }
- hal->hal_version = HAL_VERSION;
- strncpy(hal->hal_fsname, hsd->fs_name,
- MTI_NAME_MAXLEN);
- hal->hal_fsname[MTI_NAME_MAXLEN] = '\0';
- hal->hal_compound_id = larr->arr_compound_id;
- hal->hal_archive_id = larr->arr_archive_id;
- hal->hal_flags = larr->arr_flags;
- hal->hal_count = 0;
- hsd->request[empty_slot].hal_used_sz = hal_size(hal);
- hsd->request[empty_slot].hal = hal;
- hsd->request_cnt++;
- found = empty_slot;
- hai = hai_first(hal);
- } else {
- /* request is known */
- /* we check if record archive num is the same as the
- * known request, if not we will serve it in multiple
- * time because we do not know if the agent can serve
- * multiple backend
- * a use case is a compound made of multiple restore
- * where the files are not archived in the same backend
- */
- if (larr->arr_archive_id !=
- hsd->request[found].hal->hal_archive_id)
- RETURN(0);
-
- if (hsd->request[found].hal_sz <
- hsd->request[found].hal_used_sz +
- cfs_size_round(larr->arr_hai.hai_len)) {
- /* Not enough room, need an extension */
- void *hal_buffer;
- int sz;
-
- sz = 2 * hsd->request[found].hal_sz;
- OBD_ALLOC(hal_buffer, sz);
- if (!hal_buffer) {
- CERROR("%s: Cannot allocate memory "
- "(%d o) for compound "LPX64"\n",
- mdt_obd_name(mdt), sz,
- larr->arr_compound_id);
- RETURN(-ENOMEM);
- }
- memcpy(hal_buffer, hsd->request[found].hal,
- hsd->request[found].hal_used_sz);
- OBD_FREE(hsd->request[found].hal,
- hsd->request[found].hal_sz);
- hsd->request[found].hal = hal_buffer;
- hsd->request[found].hal_sz = sz;
- }
- hai = hai_first(hsd->request[found].hal);
- for (i = 0; i < hsd->request[found].hal->hal_count;
- i++)
- hai = hai_next(hai);
- }
- memcpy(hai, &larr->arr_hai, larr->arr_hai.hai_len);
- hai->hai_cookie = larr->arr_hai.hai_cookie;
- hai->hai_gid = larr->arr_hai.hai_gid;
-
- hsd->request[found].hal_used_sz +=
- cfs_size_round(hai->hai_len);
- hsd->request[found].hal->hal_count++;
- break;
- }
- case ARS_STARTED: {
- struct cdt_agent_req *car;
- cfs_time_t last;
-
- /* we search for a running request
- * error may happen if coordinator crashes or stopped
- * with running request
- */
- car = mdt_cdt_find_request(cdt, larr->arr_hai.hai_cookie, NULL);
- if (car == NULL) {
- last = larr->arr_req_create;
- } else {
- last = car->car_req_update;
- mdt_cdt_put_request(car);
- }
-
- /* test if request too long, if yes cancel it
- * the same way the copy tool acknowledge a cancel request */
- if ((last + cdt->cdt_active_req_timeout)
- < cfs_time_current_sec()) {
- struct hsm_progress_kernel pgs;
-
- dump_llog_agent_req_rec("mdt_coordinator_cb(): "
- "request timeouted, start "
- "cleaning", larr);
- /* a too old cancel request just needs to be removed
- * this can happen, if copy tool does not support cancel
- * for other requests, we have to remove the running
- * request and notify the copytool
- */
- pgs.hpk_fid = larr->arr_hai.hai_fid;
- pgs.hpk_cookie = larr->arr_hai.hai_cookie;
- pgs.hpk_extent = larr->arr_hai.hai_extent;
- pgs.hpk_flags = HP_FLAG_COMPLETED;
- pgs.hpk_errval = ENOSYS;
- pgs.hpk_data_version = 0;
- /* update request state, but do not record in llog, to
- * avoid deadlock on cdt_llog_lock
- */
- rc = mdt_hsm_update_request_state(hsd->mti, &pgs, 0);
- if (rc)
- CERROR("%s: Cannot cleanup timeouted request: "
- DFID" for cookie "LPX64" action=%s\n",
- mdt_obd_name(mdt),
- PFID(&pgs.hpk_fid), pgs.hpk_cookie,
- hsm_copytool_action2name(
- larr->arr_hai.hai_action));
-
- /* add the cookie to the list of record to be
- * canceled by caller */
- if (hsd->max_cookie == (hsd->cookie_cnt - 1)) {
- __u64 *ptr, *old_ptr;
- int old_sz, new_sz, new_cnt;
-
- /* need to increase vector size */
- old_sz = sizeof(__u64) * hsd->max_cookie;
- old_ptr = hsd->cookies;
-
- new_cnt = 2 * hsd->max_cookie;
- new_sz = sizeof(__u64) * new_cnt;
-
- OBD_ALLOC(ptr, new_sz);
- if (!ptr) {
- CERROR("%s: Cannot allocate memory "
- "(%d o) for cookie vector\n",
- mdt_obd_name(mdt), new_sz);
- RETURN(-ENOMEM);
- }
- memcpy(ptr, hsd->cookies, old_sz);
- hsd->cookies = ptr;
- hsd->max_cookie = new_cnt;
- OBD_FREE(old_ptr, old_sz);
- }
- hsd->cookies[hsd->cookie_cnt] =
- larr->arr_hai.hai_cookie;
- hsd->cookie_cnt++;
- }
- break;
- }
- case ARS_FAILED:
- case ARS_CANCELED:
- case ARS_SUCCEED:
if ((larr->arr_req_change + cdt->cdt_grace_delay) <
- cfs_time_current_sec())
+ ktime_get_real_seconds()) {
+ cdt_agent_record_hash_del(cdt,
+ larr->arr_hai.hai_cookie);
RETURN(LLOG_DEL_RECORD);
- break;
+ }
+
+ RETURN(0);
}
- RETURN(0);
}
/**
* remove /proc entries for coordinator
* \param mdt [IN]
*/
-void hsm_cdt_procfs_fini(struct mdt_device *mdt)
+void hsm_cdt_procfs_fini(struct mdt_device *mdt)
{
- struct coordinator *cdt = &mdt->mdt_coordinator;
+ struct coordinator *cdt = &mdt->mdt_coordinator;
- LASSERT(cdt->cdt_state == CDT_STOPPED);
if (cdt->cdt_proc_dir != NULL)
lprocfs_remove(&cdt->cdt_proc_dir);
}
return lprocfs_mdt_hsm_vars;
}
+/* Release the ressource used by the coordinator. Called when the
+ * coordinator is stopping. */
+static void mdt_hsm_cdt_cleanup(struct mdt_device *mdt)
+{
+ struct coordinator *cdt = &mdt->mdt_coordinator;
+ struct cdt_agent_req *car, *tmp1;
+ struct hsm_agent *ha, *tmp2;
+ struct cdt_restore_handle *crh, *tmp3;
+ struct mdt_thread_info *cdt_mti;
+
+ /* start cleaning */
+ down_write(&cdt->cdt_request_lock);
+ list_for_each_entry_safe(car, tmp1, &cdt->cdt_request_list,
+ car_request_list) {
+ cfs_hash_del(cdt->cdt_request_cookie_hash,
+ &car->car_hai->hai_cookie,
+ &car->car_cookie_hash);
+ list_del(&car->car_request_list);
+ mdt_cdt_put_request(car);
+ }
+ up_write(&cdt->cdt_request_lock);
+
+ down_write(&cdt->cdt_agent_lock);
+ list_for_each_entry_safe(ha, tmp2, &cdt->cdt_agents, ha_list) {
+ list_del(&ha->ha_list);
+ OBD_FREE_PTR(ha);
+ }
+ up_write(&cdt->cdt_agent_lock);
+
+ cdt_mti = lu_context_key_get(&cdt->cdt_env.le_ctx, &mdt_thread_key);
+ mutex_lock(&cdt->cdt_restore_lock);
+ list_for_each_entry_safe(crh, tmp3, &cdt->cdt_restore_handle_list,
+ crh_list) {
+ list_del(&crh->crh_list);
+ /* give back layout lock */
+ mdt_object_unlock(cdt_mti, NULL, &crh->crh_lh, 1);
+ OBD_SLAB_FREE_PTR(crh, mdt_hsm_cdt_kmem);
+ }
+ mutex_unlock(&cdt->cdt_restore_lock);
+}
+
+/*
+ * Coordinator state transition table, indexed on enum cdt_states, taking
+ * from and to states. For instance since CDT_INIT to CDT_RUNNING is a
+ * valid transition, cdt_transition[CDT_INIT][CDT_RUNNING] is true.
+ */
+static bool cdt_transition[CDT_STATES_COUNT][CDT_STATES_COUNT] = {
+ /* from -> to: stopped init running disable stopping */
+ /* stopped */ { true, true, false, false, false },
+ /* init */ { true, false, true, false, false },
+ /* running */ { false, false, true, true, true },
+ /* disable */ { false, false, true, true, true },
+ /* stopping */ { true, false, false, false, false }
+};
+
+/**
+ * Change coordinator thread state
+ * Some combinations are not valid, so catch them here.
+ *
+ * Returns 0 on success, with old_state set if not NULL, or -EINVAL if
+ * the transition was not possible.
+ */
+static int set_cdt_state_locked(struct coordinator *cdt,
+ enum cdt_states new_state)
+{
+ int rc;
+ enum cdt_states state;
+
+ state = cdt->cdt_state;
+
+ if (cdt_transition[state][new_state]) {
+ cdt->cdt_state = new_state;
+ rc = 0;
+ } else {
+ CDEBUG(D_HSM,
+ "unexpected coordinator transition, from=%s, to=%s\n",
+ cdt_mdt_state2str(state), cdt_mdt_state2str(new_state));
+ rc = -EINVAL;
+ }
+
+ return rc;
+}
+
+static int set_cdt_state(struct coordinator *cdt, enum cdt_states new_state)
+{
+ int rc;
+
+ mutex_lock(&cdt->cdt_state_lock);
+ rc = set_cdt_state_locked(cdt, new_state);
+ mutex_unlock(&cdt->cdt_state_lock);
+
+ return rc;
+}
+
+
+
/**
* coordinator thread
* \param data [IN] obd device
struct mdt_thread_info *mti = data;
struct mdt_device *mdt = mti->mti_mdt;
struct coordinator *cdt = &mdt->mdt_coordinator;
- struct hsm_scan_data hsd = { 0 };
- int rc = 0;
+ struct hsm_scan_data hsd = { NULL };
+ time64_t last_housekeeping = 0;
+ size_t request_sz = 0;
+ int rc;
ENTRY;
- cdt->cdt_thread.t_flags = SVC_RUNNING;
- wake_up(&cdt->cdt_thread.t_ctl_waitq);
-
CDEBUG(D_HSM, "%s: coordinator thread starting, pid=%d\n",
mdt_obd_name(mdt), current_pid());
- /* timeouted cookie vector initialization */
- hsd.max_cookie = 0;
- hsd.cookie_cnt = 0;
- hsd.cookies = NULL;
- /* we use a copy of cdt_max_requests in the cb, so if cdt_max_requests
- * increases due to a change from /proc we do not overflow the
- * hsd.request[] vector
- */
- hsd.max_requests = cdt->cdt_max_requests;
- hsd.request_sz = hsd.max_requests * sizeof(*hsd.request);
- OBD_ALLOC(hsd.request, hsd.request_sz);
- if (!hsd.request)
- GOTO(out, rc = -ENOMEM);
+ hsd.hsd_mti = mti;
+ obd_uuid2fsname(hsd.hsd_fsname, mdt_obd_name(mdt),
+ sizeof(hsd.hsd_fsname));
+
+ set_cdt_state(cdt, CDT_RUNNING);
- hsd.mti = mti;
- obd_uuid2fsname(hsd.fs_name, mdt_obd_name(mdt), MTI_NAME_MAXLEN);
+ /* Inform mdt_hsm_cdt_start(). */
+ wake_up_all(&cdt->cdt_waitq);
while (1) {
- struct l_wait_info lwi;
int i;
+ int update_idx = 0;
+ int updates_sz;
+ int updates_cnt;
+ struct hsm_record_update *updates;
+
+ /* Limit execution of the expensive requests traversal
+ * to at most one second. This prevents repeatedly
+ * locking/unlocking the catalog for each request
+ * and preventing other HSM operations from happening
+ */
+ wait_event_interruptible_timeout(cdt->cdt_waitq,
+ kthread_should_stop() ||
+ cdt->cdt_wakeup_coordinator,
+ cfs_time_seconds(1));
- lwi = LWI_TIMEOUT(cfs_time_seconds(cdt->cdt_loop_period),
- NULL, NULL);
- l_wait_event(cdt->cdt_thread.t_ctl_waitq,
- (cdt->cdt_thread.t_flags &
- (SVC_STOPPING|SVC_EVENT)),
- &lwi);
-
+ cdt->cdt_wakeup_coordinator = false;
CDEBUG(D_HSM, "coordinator resumes\n");
- if (cdt->cdt_thread.t_flags & SVC_STOPPING ||
- cdt->cdt_state == CDT_STOPPING) {
- cdt->cdt_thread.t_flags &= ~SVC_STOPPING;
+ if (kthread_should_stop()) {
+ CDEBUG(D_HSM, "Coordinator stops\n");
rc = 0;
break;
}
- /* wake up before timeout, new work arrives */
- if (cdt->cdt_thread.t_flags & SVC_EVENT)
- cdt->cdt_thread.t_flags &= ~SVC_EVENT;
-
/* if coordinator is suspended continue to wait */
if (cdt->cdt_state == CDT_DISABLE) {
CDEBUG(D_HSM, "disable state, coordinator sleeps\n");
continue;
}
+ /* If no event, and no housekeeping to do, continue to
+ * wait. */
+ if (last_housekeeping + cdt->cdt_loop_period <=
+ ktime_get_real_seconds()) {
+ last_housekeeping = ktime_get_real_seconds();
+ hsd.hsd_housekeeping = true;
+ } else if (cdt->cdt_event) {
+ hsd.hsd_housekeeping = false;
+ } else {
+ continue;
+ }
+
+ cdt->cdt_event = false;
+
CDEBUG(D_HSM, "coordinator starts reading llog\n");
- if (hsd.max_requests != cdt->cdt_max_requests) {
+ if (hsd.hsd_request_len != cdt->cdt_max_requests) {
/* cdt_max_requests has changed,
* we need to allocate a new buffer
*/
- OBD_FREE(hsd.request, hsd.request_sz);
- hsd.max_requests = cdt->cdt_max_requests;
- hsd.request_sz =
- hsd.max_requests * sizeof(*hsd.request);
- OBD_ALLOC(hsd.request, hsd.request_sz);
- if (!hsd.request) {
- rc = -ENOMEM;
- break;
+ struct hsm_scan_request *tmp = NULL;
+ int max_requests = cdt->cdt_max_requests;
+ OBD_ALLOC_LARGE(tmp, max_requests *
+ sizeof(struct hsm_scan_request));
+ if (!tmp) {
+ CERROR("Failed to resize request buffer, "
+ "keeping it at %d\n",
+ hsd.hsd_request_len);
+ } else {
+ if (hsd.hsd_request != NULL)
+ OBD_FREE_LARGE(hsd.hsd_request,
+ request_sz);
+
+ hsd.hsd_request_len = max_requests;
+ request_sz = hsd.hsd_request_len *
+ sizeof(struct hsm_scan_request);
+ hsd.hsd_request = tmp;
}
}
- /* create canceled cookie vector for an arbitrary size
- * if needed, vector will grow during llog scan
- */
- hsd.max_cookie = 10;
- hsd.cookie_cnt = 0;
- OBD_ALLOC(hsd.cookies, hsd.max_cookie * sizeof(__u64));
- if (!hsd.cookies) {
- rc = -ENOMEM;
- goto clean_cb_alloc;
- }
- hsd.request_cnt = 0;
+ hsd.hsd_action_count = 0;
+ hsd.hsd_request_count = 0;
- rc = cdt_llog_process(mti->mti_env, mdt,
- mdt_coordinator_cb, &hsd);
+ rc = cdt_llog_process(mti->mti_env, mdt, mdt_coordinator_cb,
+ &hsd, 0, 0, WRITE);
if (rc < 0)
goto clean_cb_alloc;
- CDEBUG(D_HSM, "Found %d requests to send and %d"
- " requests to cancel\n",
- hsd.request_cnt, hsd.cookie_cnt);
- /* first we cancel llog records of the timeouted requests */
- if (hsd.cookie_cnt > 0) {
- rc = mdt_agent_record_update(mti->mti_env, mdt,
- hsd.cookies,
- hsd.cookie_cnt,
- ARS_CANCELED);
- if (rc)
- CERROR("%s: mdt_agent_record_update() failed, "
- "rc=%d, cannot update status to %s "
- "for %d cookies\n",
- mdt_obd_name(mdt), rc,
- agent_req_status2name(ARS_CANCELED),
- hsd.cookie_cnt);
- }
+ CDEBUG(D_HSM, "found %d requests to send\n",
+ hsd.hsd_request_count);
if (list_empty(&cdt->cdt_agents)) {
CDEBUG(D_HSM, "no agent available, "
goto clean_cb_alloc;
}
+ /* Compute how many HAI we have in all the requests */
+ updates_cnt = 0;
+ for (i = 0; i < hsd.hsd_request_count; i++) {
+ const struct hsm_scan_request *request =
+ &hsd.hsd_request[i];
+
+ updates_cnt += request->hal->hal_count;
+ }
+
+ /* Allocate a temporary array to store the cookies to
+ * update, and their status. */
+ updates_sz = updates_cnt * sizeof(*updates);
+ OBD_ALLOC(updates, updates_sz);
+ if (updates == NULL) {
+ CERROR("%s: Cannot allocate memory (%d o) "
+ "for %d updates\n",
+ mdt_obd_name(mdt), updates_sz, updates_cnt);
+ continue;
+ }
+
/* here hsd contains a list of requests to be started */
- for (i = 0; i < hsd.max_requests; i++) {
- struct hsm_action_list *hal;
+ for (i = 0; i < hsd.hsd_request_count; i++) {
+ struct hsm_scan_request *request = &hsd.hsd_request[i];
+ struct hsm_action_list *hal = request->hal;
struct hsm_action_item *hai;
- __u64 *cookies;
- int sz, j;
- enum agent_req_status status;
+ int j;
/* still room for work ? */
- if (atomic_read(&cdt->cdt_request_count) ==
+ if (atomic_read(&cdt->cdt_request_count) >=
cdt->cdt_max_requests)
break;
- if (hsd.request[i].hal == NULL)
- continue;
-
- /* found a request, we start it */
- /* kuc payload allocation so we avoid an additionnal
- * allocation in mdt_hsm_agent_send()
- */
- hal = kuc_alloc(hsd.request[i].hal_used_sz,
- KUC_TRANSPORT_HSM, HMT_ACTION_LIST);
- if (IS_ERR(hal)) {
- CERROR("%s: Cannot allocate memory (%d o) "
- "for compound "LPX64"\n",
- mdt_obd_name(mdt),
- hsd.request[i].hal_used_sz,
- hsd.request[i].hal->hal_compound_id);
- continue;
- }
- memcpy(hal, hsd.request[i].hal,
- hsd.request[i].hal_used_sz);
-
rc = mdt_hsm_agent_send(mti, hal, 0);
/* if failure, we suppose it is temporary
* if the copy tool failed to do the request
* it has to use hsm_progress
*/
- status = (rc ? ARS_WAITING : ARS_STARTED);
/* set up cookie vector to set records status
* after copy tools start or failed
*/
- sz = hsd.request[i].hal->hal_count * sizeof(__u64);
- OBD_ALLOC(cookies, sz);
- if (cookies == NULL) {
- CERROR("%s: Cannot allocate memory (%d o) "
- "for cookies vector "LPX64"\n",
- mdt_obd_name(mdt), sz,
- hsd.request[i].hal->hal_compound_id);
- kuc_free(hal, hsd.request[i].hal_used_sz);
- continue;
- }
hai = hai_first(hal);
- for (j = 0; j < hsd.request[i].hal->hal_count; j++) {
- cookies[j] = hai->hai_cookie;
+ for (j = 0; j < hal->hal_count; j++) {
+ updates[update_idx].cookie = hai->hai_cookie;
+ updates[update_idx].status =
+ (rc ? ARS_WAITING : ARS_STARTED);
hai = hai_next(hai);
+ update_idx++;
}
+ }
- rc = mdt_agent_record_update(mti->mti_env, mdt, cookies,
- hsd.request[i].hal->hal_count,
- status);
+ if (update_idx) {
+ rc = mdt_agent_record_update(mti->mti_env, mdt,
+ updates, update_idx);
if (rc)
CERROR("%s: mdt_agent_record_update() failed, "
- "rc=%d, cannot update status to %s "
+ "rc=%d, cannot update records "
"for %d cookies\n",
- mdt_obd_name(mdt), rc,
- agent_req_status2name(status),
- hsd.request[i].hal->hal_count);
-
- OBD_FREE(cookies, sz);
- kuc_free(hal, hsd.request[i].hal_used_sz);
- }
-clean_cb_alloc:
- /* free cookie vector allocated for/by callback */
- if (hsd.cookies) {
- OBD_FREE(hsd.cookies, hsd.max_cookie * sizeof(__u64));
- hsd.max_cookie = 0;
- hsd.cookie_cnt = 0;
- hsd.cookies = NULL;
+ mdt_obd_name(mdt), rc, update_idx);
}
+ OBD_FREE(updates, updates_sz);
+
+clean_cb_alloc:
/* free hal allocated by callback */
- for (i = 0; i < hsd.max_requests; i++) {
- if (hsd.request[i].hal) {
- OBD_FREE(hsd.request[i].hal,
- hsd.request[i].hal_sz);
- hsd.request[i].hal_sz = 0;
- hsd.request[i].hal = NULL;
- hsd.request_cnt--;
- }
- }
- LASSERT(hsd.request_cnt == 0);
+ for (i = 0; i < hsd.hsd_request_count; i++) {
+ struct hsm_scan_request *request = &hsd.hsd_request[i];
- /* reset callback data */
- memset(hsd.request, 0, hsd.request_sz);
+ OBD_FREE(request->hal, request->hal_sz);
+ }
}
- EXIT;
-out:
- if (hsd.request)
- OBD_FREE(hsd.request, hsd.request_sz);
- if (hsd.cookies)
- OBD_FREE(hsd.cookies, hsd.max_cookie * sizeof(__u64));
+ if (hsd.hsd_request != NULL)
+ OBD_FREE_LARGE(hsd.hsd_request, request_sz);
- if (cdt->cdt_state == CDT_STOPPING) {
- /* request comes from /proc path, so we need to clean cdt
- * struct */
- mdt_hsm_cdt_stop(mdt);
- mdt->mdt_opts.mo_coordinator = 0;
- } else {
- /* request comes from a thread event, generated
- * by mdt_stop_coordinator(), we have to ack
- * and cdt cleaning will be done by event sender
- */
- cdt->cdt_thread.t_flags = SVC_STOPPED;
- wake_up(&cdt->cdt_thread.t_ctl_waitq);
- }
+ mdt_hsm_cdt_cleanup(mdt);
if (rc != 0)
CERROR("%s: coordinator thread exiting, process=%d, rc=%d\n",
" no error\n",
mdt_obd_name(mdt), current_pid());
+ RETURN(rc);
+}
+
+int cdt_restore_handle_add(struct mdt_thread_info *mti, struct coordinator *cdt,
+ const struct lu_fid *fid,
+ const struct hsm_extent *he)
+{
+ struct cdt_restore_handle *crh;
+ struct mdt_object *obj;
+ int rc;
+ ENTRY;
+
+ OBD_SLAB_ALLOC_PTR(crh, mdt_hsm_cdt_kmem);
+ if (crh == NULL)
+ RETURN(-ENOMEM);
+
+ crh->crh_fid = *fid;
+ /* in V1 all file is restored
+ * crh->extent.start = he->offset;
+ * crh->extent.end = he->offset + he->length;
+ */
+ crh->crh_extent.start = 0;
+ crh->crh_extent.end = he->length;
+ /* get the layout lock */
+ mdt_lock_reg_init(&crh->crh_lh, LCK_EX);
+ obj = mdt_object_find_lock(mti, &crh->crh_fid, &crh->crh_lh,
+ MDS_INODELOCK_LAYOUT);
+ if (IS_ERR(obj))
+ GOTO(out_crh, rc = PTR_ERR(obj));
+
+ /* We do not keep a reference on the object during the restore
+ * which can be very long. */
+ mdt_object_put(mti->mti_env, obj);
+
+ mutex_lock(&cdt->cdt_restore_lock);
+ if (unlikely(cdt->cdt_state == CDT_STOPPED ||
+ cdt->cdt_state == CDT_STOPPING)) {
+ mutex_unlock(&cdt->cdt_restore_lock);
+ GOTO(out_lh, rc = -EAGAIN);
+ }
+
+ list_add_tail(&crh->crh_list, &cdt->cdt_restore_handle_list);
+ mutex_unlock(&cdt->cdt_restore_lock);
+
+ RETURN(0);
+out_lh:
+ mdt_object_unlock(mti, NULL, &crh->crh_lh, 1);
+out_crh:
+ OBD_SLAB_FREE_PTR(crh, mdt_hsm_cdt_kmem);
+
return rc;
}
* \retval cdt_restore_handle found
* \retval NULL not found
*/
-static struct cdt_restore_handle *hsm_restore_hdl_find(struct coordinator *cdt,
- const struct lu_fid *fid)
+struct cdt_restore_handle *cdt_restore_handle_find(struct coordinator *cdt,
+ const struct lu_fid *fid)
{
- struct cdt_restore_handle *crh;
+ struct cdt_restore_handle *crh;
ENTRY;
- list_for_each_entry(crh, &cdt->cdt_restore_hdl, crh_list) {
+ list_for_each_entry(crh, &cdt->cdt_restore_handle_list, crh_list) {
if (lu_fid_eq(&crh->crh_fid, fid))
RETURN(crh);
}
+
RETURN(NULL);
}
+void cdt_restore_handle_del(struct mdt_thread_info *mti,
+ struct coordinator *cdt, const struct lu_fid *fid)
+{
+ struct cdt_restore_handle *crh;
+
+ /* give back layout lock */
+ mutex_lock(&cdt->cdt_restore_lock);
+ crh = cdt_restore_handle_find(cdt, fid);
+ if (crh != NULL)
+ list_del(&crh->crh_list);
+ mutex_unlock(&cdt->cdt_restore_lock);
+
+ if (crh == NULL)
+ return;
+
+ /* XXX We pass a NULL object since the restore handle does not
+ * keep a reference on the object being restored. */
+ mdt_object_unlock(mti, NULL, &crh->crh_lh, 1);
+ OBD_SLAB_FREE_PTR(crh, mdt_hsm_cdt_kmem);
+}
+
/**
* data passed to llog_cat_process() callback
* to scan requests and take actions
{
struct llog_agent_req_rec *larr;
struct hsm_restore_data *hrd;
- struct cdt_restore_handle *crh;
struct hsm_action_item *hai;
struct mdt_thread_info *mti;
struct coordinator *cdt;
- struct mdt_object *child;
int rc;
ENTRY;
/* restore request not in a final state */
- OBD_SLAB_ALLOC_PTR(crh, mdt_hsm_cdt_kmem);
- if (crh == NULL)
- RETURN(-ENOMEM);
-
- crh->crh_fid = hai->hai_fid;
- /* in V1 all file is restored
- crh->extent.start = hai->hai_extent.offset;
- crh->extent.end = hai->hai_extent.offset + hai->hai_extent.length;
- */
- crh->crh_extent.start = 0;
- crh->crh_extent.end = hai->hai_extent.length;
- /* get the layout lock */
- mdt_lock_reg_init(&crh->crh_lh, LCK_EX);
- child = mdt_object_find_lock(mti, &crh->crh_fid, &crh->crh_lh,
- MDS_INODELOCK_LAYOUT);
- if (IS_ERR(child))
- GOTO(out, rc = PTR_ERR(child));
-
- rc = 0;
- /* we choose to not keep a reference
- * on the object during the restore time which can be very long */
- mdt_object_put(mti->mti_env, child);
-
- mutex_lock(&cdt->cdt_restore_lock);
- list_add_tail(&crh->crh_list, &cdt->cdt_restore_hdl);
- mutex_unlock(&cdt->cdt_restore_lock);
+ /* force replay of restore requests left in started state from previous
+ * CDT context, to be canceled later if finally found to be incompatible
+ * when being re-started */
+ if (larr->arr_status == ARS_STARTED) {
+ larr->arr_status = ARS_WAITING;
+ larr->arr_req_change = ktime_get_real_seconds();
+ rc = llog_write(env, llh, hdr, hdr->lrh_index);
+ if (rc != 0)
+ GOTO(out, rc);
+ }
+ rc = cdt_restore_handle_add(mti, cdt, &hai->hai_fid, &hai->hai_extent);
out:
RETURN(rc);
}
hrd.hrd_mti = mti;
- rc = cdt_llog_process(mti->mti_env, mti->mti_mdt,
- hsm_restore_cb, &hrd);
+ rc = cdt_llog_process(mti->mti_env, mti->mti_mdt, hsm_restore_cb, &hrd,
+ 0, 0, WRITE);
RETURN(rc);
}
uc->uc_umask = 0777;
uc->uc_ginfo = NULL;
uc->uc_identity = NULL;
-
- RETURN(0);
-}
-
-/**
- * wake up coordinator thread
- * \param mdt [IN] device
- * \retval 0 success
- * \retval -ve failure
- */
-int mdt_hsm_cdt_wakeup(struct mdt_device *mdt)
-{
- struct coordinator *cdt = &mdt->mdt_coordinator;
- ENTRY;
-
- if (cdt->cdt_state == CDT_STOPPED)
- RETURN(-ESRCH);
-
- /* wake up coordinator */
- cdt->cdt_thread.t_flags = SVC_EVENT;
- wake_up(&cdt->cdt_thread.t_ctl_waitq);
+ /* always record internal HSM activity if also enabled globally */
+ uc->uc_enable_audit = 1;
RETURN(0);
}
int rc;
ENTRY;
- cdt->cdt_state = CDT_STOPPED;
-
- init_waitqueue_head(&cdt->cdt_thread.t_ctl_waitq);
- mutex_init(&cdt->cdt_llog_lock);
+ init_waitqueue_head(&cdt->cdt_waitq);
+ init_rwsem(&cdt->cdt_llog_lock);
init_rwsem(&cdt->cdt_agent_lock);
init_rwsem(&cdt->cdt_request_lock);
mutex_init(&cdt->cdt_restore_lock);
+ mutex_init(&cdt->cdt_state_lock);
+ set_cdt_state(cdt, CDT_STOPPED);
+
+ INIT_LIST_HEAD(&cdt->cdt_request_list);
+ INIT_LIST_HEAD(&cdt->cdt_agents);
+ INIT_LIST_HEAD(&cdt->cdt_restore_handle_list);
+
+ cdt->cdt_request_cookie_hash = cfs_hash_create("REQUEST_COOKIE_HASH",
+ CFS_HASH_BITS_MIN,
+ CFS_HASH_BITS_MAX,
+ CFS_HASH_BKT_BITS,
+ 0 /* extra bytes */,
+ CFS_HASH_MIN_THETA,
+ CFS_HASH_MAX_THETA,
+ &cdt_request_cookie_hash_ops,
+ CFS_HASH_DEFAULT);
+ if (cdt->cdt_request_cookie_hash == NULL)
+ RETURN(-ENOMEM);
- CFS_INIT_LIST_HEAD(&cdt->cdt_requests);
- CFS_INIT_LIST_HEAD(&cdt->cdt_agents);
- CFS_INIT_LIST_HEAD(&cdt->cdt_restore_hdl);
+ cdt->cdt_agent_record_hash = cfs_hash_create("AGENT_RECORD_HASH",
+ CFS_HASH_BITS_MIN,
+ CFS_HASH_BITS_MAX,
+ CFS_HASH_BKT_BITS,
+ 0 /* extra bytes */,
+ CFS_HASH_MIN_THETA,
+ CFS_HASH_MAX_THETA,
+ &cdt_agent_record_hash_ops,
+ CFS_HASH_DEFAULT);
+ if (cdt->cdt_agent_record_hash == NULL)
+ GOTO(out_request_cookie_hash, rc = -ENOMEM);
rc = lu_env_init(&cdt->cdt_env, LCT_MD_THREAD);
if (rc < 0)
- RETURN(rc);
+ GOTO(out_agent_record_hash, rc);
/* for mdt_ucred(), lu_ucred stored in lu_ucred_key */
- rc = lu_context_init(&cdt->cdt_session, LCT_SESSION);
- if (rc == 0) {
- lu_context_enter(&cdt->cdt_session);
- cdt->cdt_env.le_ses = &cdt->cdt_session;
- } else {
- lu_env_fini(&cdt->cdt_env);
- RETURN(rc);
- }
+ rc = lu_context_init(&cdt->cdt_session, LCT_SERVER_SESSION);
+ if (rc < 0)
+ GOTO(out_env, rc);
+
+ lu_context_enter(&cdt->cdt_session);
+ cdt->cdt_env.le_ses = &cdt->cdt_session;
cdt_mti = lu_context_key_get(&cdt->cdt_env.le_ctx, &mdt_thread_key);
LASSERT(cdt_mti != NULL);
cdt->cdt_policy = CDT_DEFAULT_POLICY;
cdt->cdt_active_req_timeout = 3600;
+ /* Initialize cdt_compound_id here to allow its usage for
+ * delayed requests from RAoLU policy */
+ atomic_set(&cdt->cdt_compound_id, ktime_get_real_seconds());
+
+ /* by default do not remove archives on last unlink */
+ cdt->cdt_remove_archive_on_last_unlink = false;
+
RETURN(0);
+
+out_env:
+ lu_env_fini(&cdt->cdt_env);
+out_agent_record_hash:
+ cfs_hash_putref(cdt->cdt_agent_record_hash);
+ cdt->cdt_agent_record_hash = NULL;
+out_request_cookie_hash:
+ cfs_hash_putref(cdt->cdt_request_cookie_hash);
+ cdt->cdt_request_cookie_hash = NULL;
+
+ return rc;
}
/**
lu_env_fini(&cdt->cdt_env);
+ cfs_hash_putref(cdt->cdt_agent_record_hash);
+ cdt->cdt_agent_record_hash = NULL;
+
+ cfs_hash_putref(cdt->cdt_request_cookie_hash);
+ cdt->cdt_request_cookie_hash = NULL;
+
RETURN(0);
}
* \retval 0 success
* \retval -ve failure
*/
-int mdt_hsm_cdt_start(struct mdt_device *mdt)
+static int mdt_hsm_cdt_start(struct mdt_device *mdt)
{
struct coordinator *cdt = &mdt->mdt_coordinator;
+ struct mdt_thread_info *cdt_mti;
int rc;
void *ptr;
- struct mdt_thread_info *cdt_mti;
struct task_struct *task;
ENTRY;
*/
ptr = dump_requests;
- if (cdt->cdt_state != CDT_STOPPED) {
- CERROR("%s: Coordinator already started\n",
+ rc = set_cdt_state(cdt, CDT_INIT);
+ if (rc) {
+ CERROR("%s: Coordinator already started or stopping\n",
mdt_obd_name(mdt));
RETURN(-EALREADY);
}
CLASSERT(1 << (CDT_POLICY_SHIFT_COUNT - 1) == CDT_POLICY_LAST);
cdt->cdt_policy = CDT_DEFAULT_POLICY;
- cdt->cdt_state = CDT_INIT;
-
- atomic_set(&cdt->cdt_compound_id, cfs_time_current_sec());
/* just need to be larger than previous one */
/* cdt_last_cookie is protected by cdt_llog_lock */
- cdt->cdt_last_cookie = cfs_time_current_sec();
+ cdt->cdt_last_cookie = ktime_get_real_seconds();
atomic_set(&cdt->cdt_request_count, 0);
+ atomic_set(&cdt->cdt_archive_count, 0);
+ atomic_set(&cdt->cdt_restore_count, 0);
+ atomic_set(&cdt->cdt_remove_count, 0);
cdt->cdt_user_request_mask = (1UL << HSMA_RESTORE);
cdt->cdt_group_request_mask = (1UL << HSMA_RESTORE);
cdt->cdt_other_request_mask = (1UL << HSMA_RESTORE);
rc = mdt_hsm_pending_restore(cdt_mti);
if (rc)
CERROR("%s: cannot take the layout locks needed"
- " for registered restore: %d",
+ " for registered restore: %d\n",
mdt_obd_name(mdt), rc);
+ if (mdt->mdt_bottom->dd_rdonly)
+ RETURN(0);
+
task = kthread_run(mdt_coordinator, cdt_mti, "hsm_cdtr");
if (IS_ERR(task)) {
rc = PTR_ERR(task);
- cdt->cdt_state = CDT_STOPPED;
+ set_cdt_state(cdt, CDT_STOPPED);
CERROR("%s: error starting coordinator thread: %d\n",
mdt_obd_name(mdt), rc);
- RETURN(rc);
} else {
+ cdt->cdt_task = task;
+ wait_event(cdt->cdt_waitq,
+ cdt->cdt_state != CDT_INIT);
CDEBUG(D_HSM, "%s: coordinator thread started\n",
mdt_obd_name(mdt));
rc = 0;
}
- wait_event(cdt->cdt_thread.t_ctl_waitq,
- (cdt->cdt_thread.t_flags & SVC_RUNNING));
-
- cdt->cdt_state = CDT_RUNNING;
- mdt->mdt_opts.mo_coordinator = 1;
- RETURN(0);
+ RETURN(rc);
}
/**
*/
int mdt_hsm_cdt_stop(struct mdt_device *mdt)
{
- struct coordinator *cdt = &mdt->mdt_coordinator;
- struct cdt_agent_req *car, *tmp1;
- struct hsm_agent *ha, *tmp2;
- struct cdt_restore_handle *crh, *tmp3;
- struct mdt_thread_info *cdt_mti;
- ENTRY;
-
- if (cdt->cdt_state == CDT_STOPPED) {
- CERROR("%s: Coordinator already stopped\n",
- mdt_obd_name(mdt));
- RETURN(-EALREADY);
- }
-
- if (cdt->cdt_state != CDT_STOPPING) {
- /* stop coordinator thread before cleaning */
- cdt->cdt_thread.t_flags = SVC_STOPPING;
- wake_up(&cdt->cdt_thread.t_ctl_waitq);
- wait_event(cdt->cdt_thread.t_ctl_waitq,
- cdt->cdt_thread.t_flags & SVC_STOPPED);
- }
- cdt->cdt_state = CDT_STOPPED;
-
- /* start cleaning */
- down_write(&cdt->cdt_request_lock);
- list_for_each_entry_safe(car, tmp1, &cdt->cdt_requests,
- car_request_list) {
- list_del(&car->car_request_list);
- mdt_cdt_free_request(car);
- }
- up_write(&cdt->cdt_request_lock);
+ struct coordinator *cdt = &mdt->mdt_coordinator;
+ int rc;
- down_write(&cdt->cdt_agent_lock);
- list_for_each_entry_safe(ha, tmp2, &cdt->cdt_agents, ha_list) {
- list_del(&ha->ha_list);
- OBD_FREE_PTR(ha);
+ ENTRY;
+ /* stop coordinator thread */
+ rc = set_cdt_state(cdt, CDT_STOPPING);
+ if (rc == 0) {
+ kthread_stop(cdt->cdt_task);
+ cdt->cdt_task = NULL;
+ set_cdt_state(cdt, CDT_STOPPED);
}
- up_write(&cdt->cdt_agent_lock);
- cdt_mti = lu_context_key_get(&cdt->cdt_env.le_ctx, &mdt_thread_key);
- mutex_lock(&cdt->cdt_restore_lock);
- list_for_each_entry_safe(crh, tmp3, &cdt->cdt_restore_hdl, crh_list) {
- struct mdt_object *child;
+ RETURN(rc);
+}
- /* give back layout lock */
- child = mdt_object_find(&cdt->cdt_env, mdt, &crh->crh_fid);
- if (!IS_ERR(child))
- mdt_object_unlock_put(cdt_mti, child, &crh->crh_lh, 1);
+static int mdt_hsm_set_exists(struct mdt_thread_info *mti,
+ const struct lu_fid *fid,
+ u32 archive_id)
+{
+ struct mdt_object *obj;
+ struct md_hsm mh;
+ int rc;
- list_del(&crh->crh_list);
+ obj = mdt_hsm_get_md_hsm(mti, fid, &mh);
+ if (IS_ERR(obj))
+ GOTO(out, rc = PTR_ERR(obj));
- OBD_SLAB_FREE_PTR(crh, mdt_hsm_cdt_kmem);
- }
- mutex_unlock(&cdt->cdt_restore_lock);
+ if (mh.mh_flags & HS_EXISTS &&
+ mh.mh_arch_id == archive_id)
+ GOTO(out_obj, rc = 0);
- mdt->mdt_opts.mo_coordinator = 0;
+ mh.mh_flags |= HS_EXISTS;
+ mh.mh_arch_id = archive_id;
+ rc = mdt_hsm_attr_set(mti, obj, &mh);
- RETURN(0);
+out_obj:
+ mdt_object_put(mti->mti_env, obj);
+out:
+ return rc;
}
/**
* it will be done when updating the request status
*/
if (hai->hai_action == HSMA_CANCEL) {
+ struct hsm_record_update update = {
+ .cookie = hai->hai_cookie,
+ .status = ARS_CANCELED,
+ };
+
rc = mdt_agent_record_update(mti->mti_env, mti->mti_mdt,
- &hai->hai_cookie,
- 1, ARS_CANCELED);
+ &update, 1);
if (rc) {
CERROR("%s: mdt_agent_record_update() failed, "
"rc=%d, cannot update status to %s "
- "for cookie "LPX64"\n",
+ "for cookie %#llx\n",
mdt_obd_name(mdt), rc,
agent_req_status2name(ARS_CANCELED),
hai->hai_cookie);
}
/* find the running request to set it canceled */
- car = mdt_cdt_find_request(cdt, hai->hai_cookie, NULL);
+ car = mdt_cdt_find_request(cdt, hai->hai_cookie);
if (car != NULL) {
car->car_canceled = 1;
/* uuid has to be changed to the one running the
}
if (hai->hai_action == HSMA_ARCHIVE) {
- struct mdt_object *obj;
- struct md_hsm hsm;
-
- obj = mdt_hsm_get_md_hsm(mti, &hai->hai_fid, &hsm);
- if (IS_ERR(obj) && (PTR_ERR(obj) == -ENOENT))
+ rc = mdt_hsm_set_exists(mti, &hai->hai_fid,
+ hal->hal_archive_id);
+ if (rc == -ENOENT)
continue;
- if (IS_ERR(obj))
- GOTO(out, rc = PTR_ERR(obj));
-
- hsm.mh_flags |= HS_EXISTS;
- hsm.mh_arch_id = hal->hal_archive_id;
- rc = mdt_hsm_attr_set(mti, obj, &hsm);
- mdt_object_put(mti->mti_env, obj);
- if (rc)
+ else if (rc < 0)
GOTO(out, rc);
}
/**
* swap layouts between 2 fids
* \param mti [IN] context
- * \param fid1 [IN]
- * \param fid2 [IN]
+ * \param obj [IN]
+ * \param dfid [IN]
+ * \param mh_common [IN] MD HSM
*/
static int hsm_swap_layouts(struct mdt_thread_info *mti,
- const lustre_fid *fid, const lustre_fid *dfid)
+ struct mdt_object *obj, const struct lu_fid *dfid,
+ struct md_hsm *mh_common)
{
- struct mdt_device *mdt = mti->mti_mdt;
- struct mdt_object *child1, *child2;
- struct mdt_lock_handle *lh2;
+ struct mdt_object *dobj;
+ struct mdt_lock_handle *dlh;
int rc;
ENTRY;
- child1 = mdt_object_find(mti->mti_env, mdt, fid);
- if (IS_ERR(child1))
- GOTO(out, rc = PTR_ERR(child1));
+ if (!mdt_object_exists(obj))
+ GOTO(out, rc = -ENOENT);
- /* we already have layout lock on FID so take only
+ /* we already have layout lock on obj so take only
* on dfid */
- lh2 = &mti->mti_lh[MDT_LH_OLD];
- mdt_lock_reg_init(lh2, LCK_EX);
- child2 = mdt_object_find_lock(mti, dfid, lh2, MDS_INODELOCK_LAYOUT);
- if (IS_ERR(child2))
- GOTO(out_child1, rc = PTR_ERR(child2));
+ dlh = &mti->mti_lh[MDT_LH_OLD];
+ mdt_lock_reg_init(dlh, LCK_EX);
+ dobj = mdt_object_find_lock(mti, dfid, dlh, MDS_INODELOCK_LAYOUT);
+ if (IS_ERR(dobj))
+ GOTO(out, rc = PTR_ERR(dobj));
/* if copy tool closes the volatile before sending the final
* progress through llapi_hsm_copy_end(), all the objects
* are removed and mdd_swap_layout LBUG */
- if (mdt_object_exists(child2)) {
- rc = mo_swap_layouts(mti->mti_env, mdt_object_child(child1),
- mdt_object_child(child2), 0);
- } else {
+ if (!mdt_object_exists(dobj)) {
CERROR("%s: Copytool has closed volatile file "DFID"\n",
mdt_obd_name(mti->mti_mdt), PFID(dfid));
- rc = -ENOENT;
+ GOTO(out_dobj, rc = -ENOENT);
}
+ /* Since we only handle restores here, unconditionally use
+ * SWAP_LAYOUTS_MDS_HSM flag to ensure original layout will
+ * be preserved in case of failure during swap_layout and not
+ * leave a file in an intermediate but incoherent state.
+ * But need to setup HSM xattr of data FID before, reuse
+ * mti and mh presets for FID in hsm_cdt_request_completed(),
+ * only need to clear RELEASED and DIRTY.
+ */
+ mh_common->mh_flags &= ~(HS_RELEASED | HS_DIRTY);
+ rc = mdt_hsm_attr_set(mti, dobj, mh_common);
+ if (rc == 0)
+ rc = mo_swap_layouts(mti->mti_env,
+ mdt_object_child(obj),
+ mdt_object_child(dobj),
+ SWAP_LAYOUTS_MDS_HSM);
- mdt_object_unlock_put(mti, child2, lh2, 1);
-out_child1:
- mdt_object_put(mti->mti_env, child1);
+out_dobj:
+ mdt_object_unlock_put(mti, dobj, dlh, 1);
out:
RETURN(rc);
}
* update status of a completed request
* \param mti [IN] context
* \param pgs [IN] progress of the copy tool
- * \param update_record [IN] update llog record
* \retval 0 success
* \retval -ve failure
*/
int cl_flags = 0, rc = 0;
struct md_hsm mh;
bool is_mh_changed;
+ bool need_changelog = true;
ENTRY;
/* default is to retry */
*status = ARS_WAITING;
- /* find object by FID */
+ /* find object by FID, mdt_hsm_get_md_hsm() returns obj or err
+ * if error/removed continue anyway to get correct reporting done */
obj = mdt_hsm_get_md_hsm(mti, &car->car_hai->hai_fid, &mh);
/* we will update MD HSM only if needed */
is_mh_changed = false;
- if (IS_ERR(obj)) {
- /* object removed */
- *status = ARS_SUCCEED;
- goto unlock;
- }
/* no need to change mh->mh_arch_id
* mdt_hsm_get_md_hsm() got it from disk and it is still valid
* ENOSYS only if does not support cancel
*/
/* this can also happen when cdt calls it to
- * for a timeouted request */
+ * for a timed out request */
*status = ARS_FAILED;
/* to have a cancel event in changelog */
pgs->hpk_errval = ECANCELED;
*status = ARS_SUCCEED;
break;
default:
+ /* retry only if current policy or requested, and
+ * object is not on error/removed */
*status = (cdt->cdt_policy & CDT_NORETRY_ACTION ||
- !(pgs->hpk_flags & HP_FLAG_RETRY) ?
- ARS_FAILED : ARS_WAITING);
+ !(pgs->hpk_flags & HP_FLAG_RETRY) ||
+ IS_ERR(obj)) ? ARS_FAILED : ARS_WAITING;
break;
}
if (pgs->hpk_errval > CLF_HSM_MAXERROR) {
- CERROR("%s: Request "LPX64" on "DFID
+ CERROR("%s: Request %#llx on "DFID
" failed, error code %d too large\n",
mdt_obd_name(mdt),
pgs->hpk_cookie, PFID(&pgs->hpk_fid),
break;
case HSMA_CANCEL:
hsm_set_cl_event(&cl_flags, HE_CANCEL);
- CERROR("%s: Failed request "LPX64" on "DFID
+ CERROR("%s: Failed request %#llx on "DFID
" cannot be a CANCEL\n",
mdt_obd_name(mdt),
pgs->hpk_cookie,
PFID(&pgs->hpk_fid));
break;
default:
- CERROR("%s: Failed request "LPX64" on "DFID
+ CERROR("%s: Failed request %#llx on "DFID
" %d is an unknown action\n",
mdt_obd_name(mdt),
pgs->hpk_cookie, PFID(&pgs->hpk_fid),
case HSMA_RESTORE:
hsm_set_cl_event(&cl_flags, HE_RESTORE);
- /* clear RELEASED and DIRTY */
- mh.mh_flags &= ~(HS_RELEASED | HS_DIRTY);
+ /* do not clear RELEASED and DIRTY here
+ * this will occur in hsm_swap_layouts()
+ */
+
/* Restoring has changed the file version on
* disk. */
mh.mh_arch_ver = pgs->hpk_data_version;
break;
case HSMA_CANCEL:
hsm_set_cl_event(&cl_flags, HE_CANCEL);
- CERROR("%s: Successful request "LPX64
- " on "DFID
- " cannot be a CANCEL\n",
+ CERROR("%s: Successful request %#llx on "DFID" cannot be a CANCEL\n",
mdt_obd_name(mdt),
pgs->hpk_cookie,
PFID(&pgs->hpk_fid));
break;
default:
- CERROR("%s: Successful request "LPX64
- " on "DFID
- " %d is an unknown action\n",
+ CERROR("%s: Successful request %#llx on "DFID" %d is an unknown action\n",
mdt_obd_name(mdt),
pgs->hpk_cookie, PFID(&pgs->hpk_fid),
car->car_hai->hai_action);
/* rc != 0 means error when analysing action, it may come from
* a crasy CT no need to manage DIRTY
+ * and if mdt_hsm_get_md_hsm() has returned an error, mh has not been
+ * filled
*/
- if (rc == 0)
+ if (rc == 0 && !IS_ERR(obj))
hsm_set_cl_flags(&cl_flags,
mh.mh_flags & HS_DIRTY ? CLF_HSM_DIRTY : 0);
/* unlock is done later, after layout lock management */
- if (is_mh_changed)
+ if (is_mh_changed && !IS_ERR(obj))
rc = mdt_hsm_attr_set(mti, obj, &mh);
-unlock:
/* we give back layout lock only if restore was successful or
- * if restore was canceled or if policy is to not retry
+ * if no retry will be attempted and if object is still alive,
* in other cases we just unlock the object */
- if (car->car_hai->hai_action == HSMA_RESTORE &&
- (pgs->hpk_errval == 0 || pgs->hpk_errval == ECANCELED ||
- cdt->cdt_policy & CDT_NORETRY_ACTION)) {
- struct cdt_restore_handle *crh;
-
+ if (car->car_hai->hai_action == HSMA_RESTORE) {
/* restore in data FID done, we swap the layouts
- * only if restore is successfull */
- if (pgs->hpk_errval == 0) {
- rc = hsm_swap_layouts(mti, &car->car_hai->hai_fid,
- &car->car_hai->hai_dfid);
+ * only if restore is successful */
+ if (pgs->hpk_errval == 0 && !IS_ERR(obj)) {
+ rc = hsm_swap_layouts(mti, obj, &car->car_hai->hai_dfid,
+ &mh);
if (rc) {
if (cdt->cdt_policy & CDT_NORETRY_ACTION)
*status = ARS_FAILED;
if (*status == ARS_WAITING)
GOTO(out, rc);
- /* give back layout lock */
- mutex_lock(&cdt->cdt_restore_lock);
- crh = hsm_restore_hdl_find(cdt, &car->car_hai->hai_fid);
- if (crh != NULL)
- list_del(&crh->crh_list);
- mutex_unlock(&cdt->cdt_restore_lock);
- /* just give back layout lock, we keep
- * the reference which is given back
- * later with the lock for HSM flags */
- if (!IS_ERR(obj) && crh != NULL)
- mdt_object_unlock(mti, obj, &crh->crh_lh, 1);
-
- if (crh != NULL)
- OBD_SLAB_FREE_PTR(crh, mdt_hsm_cdt_kmem);
+ /* restore special case, need to create ChangeLog record
+ * before to give back layout lock to avoid concurrent
+ * file updater to post out of order ChangeLog */
+ mo_changelog(env, CL_HSM, cl_flags, mdt->mdt_child,
+ &car->car_hai->hai_fid);
+ need_changelog = false;
+
+ cdt_restore_handle_del(mti, cdt, &car->car_hai->hai_fid);
}
GOTO(out, rc);
out:
- if (obj != NULL && !IS_ERR(obj)) {
- mo_changelog(env, CL_HSM, cl_flags,
- mdt_object_child(obj));
+ /* always add a ChangeLog record */
+ if (need_changelog)
+ mo_changelog(env, CL_HSM, cl_flags, mdt->mdt_child,
+ &car->car_hai->hai_fid);
+
+ if (!IS_ERR(obj))
mdt_object_put(mti->mti_env, obj);
- }
RETURN(rc);
}
* update status of a request
* \param mti [IN] context
* \param pgs [IN] progress of the copy tool
- * \param update_record [IN] update llog record
* \retval 0 success
* \retval -ve failure
*/
int mdt_hsm_update_request_state(struct mdt_thread_info *mti,
- struct hsm_progress_kernel *pgs,
- const int update_record)
+ struct hsm_progress_kernel *pgs)
{
struct mdt_device *mdt = mti->mti_mdt;
struct coordinator *cdt = &mdt->mdt_coordinator;
/* first do sanity checks */
car = mdt_cdt_update_request(cdt, pgs);
if (IS_ERR(car)) {
- CERROR("%s: Cannot find running request for cookie "LPX64
+ CERROR("%s: Cannot find running request for cookie %#llx"
" on fid="DFID"\n",
mdt_obd_name(mdt),
pgs->hpk_cookie, PFID(&pgs->hpk_fid));
- if (car == NULL)
- RETURN(-ENOENT);
+
RETURN(PTR_ERR(car));
}
- CDEBUG(D_HSM, "Progress received for fid="DFID" cookie="LPX64
+ CDEBUG(D_HSM, "Progress received for fid="DFID" cookie=%#llx"
" action=%s flags=%d err=%d fid="DFID" dfid="DFID"\n",
PFID(&pgs->hpk_fid), pgs->hpk_cookie,
hsm_copytool_action2name(car->car_hai->hai_action),
car->car_hai->hai_action == HSMA_ARCHIVE) &&
(!lu_fid_eq(&pgs->hpk_fid, &car->car_hai->hai_dfid) &&
!lu_fid_eq(&pgs->hpk_fid, &car->car_hai->hai_fid))) {
- CERROR("%s: Progress on "DFID" for cookie "LPX64
+ CERROR("%s: Progress on "DFID" for cookie %#llx"
" does not match request FID "DFID" nor data FID "
DFID"\n",
mdt_obd_name(mdt),
}
if (pgs->hpk_errval != 0 && !(pgs->hpk_flags & HP_FLAG_COMPLETED)) {
- CERROR("%s: Progress on "DFID" for cookie "LPX64" action=%s"
+ CERROR("%s: Progress on "DFID" for cookie %#llx action=%s"
" is not coherent (err=%d and not completed"
" (flags=%d))\n",
mdt_obd_name(mdt),
hsm_init_ucred(mdt_ucred(mti));
if (pgs->hpk_flags & HP_FLAG_COMPLETED) {
- enum agent_req_status status;
+ enum agent_req_status status;
+ struct hsm_record_update update;
+ int rc1;
rc = hsm_cdt_request_completed(mti, pgs, car, &status);
- /* remove request from memory list */
- mdt_cdt_remove_request(cdt, pgs->hpk_cookie);
-
- CDEBUG(D_HSM, "Updating record: fid="DFID" cookie="LPX64
- " action=%s status=%s\n", PFID(&pgs->hpk_fid),
- pgs->hpk_cookie,
+ CDEBUG(D_HSM, "updating record: fid="DFID" cookie=%#llx action=%s "
+ "status=%s\n",
+ PFID(&pgs->hpk_fid), pgs->hpk_cookie,
hsm_copytool_action2name(car->car_hai->hai_action),
agent_req_status2name(status));
- if (update_record) {
- int rc1;
-
- rc1 = mdt_agent_record_update(mti->mti_env, mdt,
- &pgs->hpk_cookie, 1,
- status);
- if (rc1)
- CERROR("%s: mdt_agent_record_update() failed,"
- " rc=%d, cannot update status to %s"
- " for cookie "LPX64"\n",
- mdt_obd_name(mdt), rc1,
- agent_req_status2name(status),
- pgs->hpk_cookie);
- rc = (rc != 0 ? rc : rc1);
- }
- /* ct has completed a request, so a slot is available, wakeup
- * cdt to find new work */
- mdt_hsm_cdt_wakeup(mdt);
+ /* update record first (LU-9075) */
+ update.cookie = pgs->hpk_cookie;
+ update.status = status;
+
+ rc1 = mdt_agent_record_update(mti->mti_env, mdt,
+ &update, 1);
+ if (rc1)
+ CERROR("%s: mdt_agent_record_update() failed,"
+ " rc=%d, cannot update status to %s"
+ " for cookie %#llx\n",
+ mdt_obd_name(mdt), rc1,
+ agent_req_status2name(status),
+ pgs->hpk_cookie);
+ rc = (rc != 0 ? rc : rc1);
+
+ /* then remove request from memory list (LU-9075) */
+ mdt_cdt_remove_request(cdt, pgs->hpk_cookie);
+
+ /* ct has completed a request, so a slot is available,
+ * signal the coordinator to find new work */
+ mdt_hsm_cdt_event(cdt);
} else {
/* if copytool send a progress on a canceled request
* we inform copytool it should stop
if (larr->arr_status == ARS_WAITING ||
larr->arr_status == ARS_STARTED) {
larr->arr_status = ARS_CANCELED;
- larr->arr_req_change = cfs_time_current_sec();
- rc = mdt_agent_llog_update_rec(env, hcad->mdt, llh, larr);
- if (rc == 0)
- RETURN(LLOG_DEL_RECORD);
+ larr->arr_req_change = ktime_get_real_seconds();
+ rc = llog_write(env, llh, hdr, hdr->lrh_index);
}
+
RETURN(rc);
}
*/
static int hsm_cancel_all_actions(struct mdt_device *mdt)
{
+ struct lu_env env;
+ struct lu_context session;
struct mdt_thread_info *mti;
struct coordinator *cdt = &mdt->mdt_coordinator;
struct cdt_agent_req *car;
struct hsm_action_item *hai;
struct hsm_cancel_all_data hcad;
int hal_sz = 0, hal_len, rc;
- enum cdt_states save_state;
+ enum cdt_states old_state;
ENTRY;
- /* retrieve coordinator context */
- mti = lu_context_key_get(&cdt->cdt_env.le_ctx, &mdt_thread_key);
+ rc = lu_env_init(&env, LCT_MD_THREAD);
+ if (rc < 0)
+ RETURN(rc);
+
+ /* for mdt_ucred(), lu_ucred stored in lu_ucred_key */
+ rc = lu_context_init(&session, LCT_SERVER_SESSION);
+ if (rc < 0)
+ GOTO(out_env, rc);
+
+ lu_context_enter(&session);
+ env.le_ses = &session;
+
+ mti = lu_context_key_get(&env.le_ctx, &mdt_thread_key);
+ LASSERT(mti != NULL);
+
+ mti->mti_env = &env;
+ mti->mti_mdt = mdt;
+
+ hsm_init_ucred(mdt_ucred(mti));
+
+ mutex_lock(&cdt->cdt_state_lock);
+ old_state = cdt->cdt_state;
/* disable coordinator */
- save_state = cdt->cdt_state;
- cdt->cdt_state = CDT_DISABLE;
+ rc = set_cdt_state_locked(cdt, CDT_DISABLE);
+ if (rc)
+ GOTO(out_cdt_state_unlock, rc);
/* send cancel to all running requests */
down_read(&cdt->cdt_request_lock);
- list_for_each_entry(car, &cdt->cdt_requests, car_request_list) {
+ list_for_each_entry(car, &cdt->cdt_request_list, car_request_list) {
mdt_cdt_get_request(car);
/* request is not yet removed from list, it will be done
* when copytool will return progress
if (hal == NULL) {
mdt_cdt_put_request(car);
up_read(&cdt->cdt_request_lock);
- GOTO(out, rc = -ENOMEM);
+ GOTO(out_cdt_state, rc = -ENOMEM);
}
}
/* cancel all on-disk records */
hcad.mdt = mdt;
- rc = cdt_llog_process(mti->mti_env, mti->mti_mdt,
- mdt_cancel_all_cb, &hcad);
-out:
- /* enable coordinator */
- cdt->cdt_state = save_state;
+ rc = cdt_llog_process(mti->mti_env, mti->mti_mdt, mdt_cancel_all_cb,
+ &hcad, 0, 0, WRITE);
+out_cdt_state:
+ /* Enable coordinator, unless the coordinator was stopping. */
+ set_cdt_state_locked(cdt, old_state);
+out_cdt_state_unlock:
+ mutex_unlock(&cdt->cdt_state_lock);
+
+ lu_context_exit(&session);
+ lu_context_fini(&session);
+out_env:
+ lu_env_fini(&env);
RETURN(rc);
}
/**
- * check if a request is comptaible with file status
+ * check if a request is compatible with file status
* \param hai [IN] request description
- * \param hal_an [IN] request archive number (not used)
+ * \param archive_id [IN] request archive id
* \param rq_flags [IN] request flags
* \param hsm [IN] file HSM metadata
* \retval boolean
*/
bool mdt_hsm_is_action_compat(const struct hsm_action_item *hai,
- const int hal_an, const __u64 rq_flags,
+ u32 archive_id, u64 rq_flags,
const struct md_hsm *hsm)
{
int is_compat = false;
if (!(hsm_flags & HS_NOARCHIVE) &&
(hsm_flags & HS_DIRTY || !(hsm_flags & HS_ARCHIVED)))
is_compat = true;
+
+ if (hsm_flags & HS_EXISTS &&
+ archive_id != 0 &&
+ archive_id != hsm->mh_arch_id)
+ is_compat = false;
+
break;
case HSMA_RESTORE:
if (!(hsm_flags & HS_DIRTY) && (hsm_flags & HS_RELEASED) &&
is_compat = true;
break;
}
- CDEBUG(D_HSM, "fid="DFID" action=%s flags="LPX64
- " extent="LPX64"-"LPX64" hsm_flags=%.8X %s\n",
+ CDEBUG(D_HSM, "fid="DFID" action=%s flags=%#llx"
+ " extent=%#llx-%#llx hsm_flags=%.8X %s\n",
PFID(&hai->hai_fid),
hsm_copytool_action2name(hai->hai_action), rq_flags,
hai->hai_extent.offset, hai->hai_extent.length,
* \param hexa [IN] print mask before bit names
* \param buffer [OUT] string
* \param count [IN] size of buffer
- * \retval size filled in buffer
*/
-static int hsm_policy_bit2str(const __u64 mask, const bool hexa, char *buffer,
- int count)
+static void hsm_policy_bit2str(struct seq_file *m, const __u64 mask,
+ const bool hexa)
{
- int i, j, sz;
- char *ptr;
+ int i, j;
__u64 bit;
ENTRY;
- ptr = buffer;
- if (hexa) {
- sz = snprintf(buffer, count, "("LPX64") ", mask);
- ptr += sz;
- count -= sz;
- }
+ if (hexa)
+ seq_printf(m, "(%#llx) ", mask);
+
for (i = 0; i < CDT_POLICY_SHIFT_COUNT; i++) {
bit = (1ULL << i);
break;
}
if (bit & mask)
- sz = snprintf(ptr, count, "[%s] ",
- hsm_policy_names[j].name);
+ seq_printf(m, "[%s] ", hsm_policy_names[j].name);
else
- sz = snprintf(ptr, count, "%s ",
- hsm_policy_names[j].name);
-
- ptr += sz;
- count -= sz;
+ seq_printf(m, "%s ", hsm_policy_names[j].name);
}
/* remove last ' ' */
- *ptr = '\0';
- ptr--;
- RETURN(ptr - buffer);
+ m->count--;
+ seq_putc(m, '\n');
}
/* methods to read/write HSM policy flags */
-static int lprocfs_rd_hsm_policy(char *page, char **start, off_t off,
- int count, int *eof, void *data)
+static int mdt_hsm_policy_seq_show(struct seq_file *m, void *data)
{
- struct mdt_device *mdt = data;
+ struct mdt_device *mdt = m->private;
struct coordinator *cdt = &mdt->mdt_coordinator;
- int sz;
ENTRY;
- sz = hsm_policy_bit2str(cdt->cdt_policy, false, page, count);
- page[sz] = '\n';
- sz++;
- page[sz] = '\0';
- *eof = 1;
- RETURN(sz);
+ hsm_policy_bit2str(m, cdt->cdt_policy, false);
+ RETURN(0);
}
-static int lprocfs_wr_hsm_policy(struct file *file, const char *buffer,
- unsigned long count, void *data)
+static ssize_t
+mdt_hsm_policy_seq_write(struct file *file, const char __user *buffer,
+ size_t count, loff_t *off)
{
- struct mdt_device *mdt = data;
+ struct seq_file *m = file->private_data;
+ struct mdt_device *mdt = m->private;
struct coordinator *cdt = &mdt->mdt_coordinator;
char *start, *token, sign;
char *buf;
__u64 policy;
__u64 add_mask, remove_mask, set_mask;
- int sz;
int rc;
ENTRY;
RETURN(-ENOMEM);
if (copy_from_user(buf, buffer, count))
- RETURN(-EFAULT);
+ GOTO(out, rc = -EFAULT);
+
buf[count] = '\0';
start = buf;
policy = hsm_policy_str2bit(token);
if (policy == 0) {
- char *msg;
-
- sz = PAGE_SIZE;
- OBD_ALLOC(msg, sz);
- if (!msg)
- RETURN(-ENOMEM);
-
- hsm_policy_bit2str(0, false, msg, sz);
CWARN("%s: '%s' is unknown, "
- "supported policies are: %s\n", mdt_obd_name(mdt),
- token, msg);
- OBD_FREE(msg, sz);
+ "supported policies are:\n", mdt_obd_name(mdt),
+ token);
+ hsm_policy_bit2str(m, 0, false);
GOTO(out, rc = -EINVAL);
}
switch (sign) {
} while (start != NULL);
- CDEBUG(D_HSM, "%s: new policy: rm="LPX64" add="LPX64" set="LPX64"\n",
+ CDEBUG(D_HSM, "%s: new policy: rm=%#llx add=%#llx set=%#llx\n",
mdt_obd_name(mdt), remove_mask, add_mask, set_mask);
/* if no sign in all string, it is a clear and set
OBD_FREE(buf, count + 1);
RETURN(rc);
}
+LPROC_SEQ_FOPS(mdt_hsm_policy);
#define GENERATE_PROC_METHOD(VAR) \
-static int lprocfs_rd_hsm_##VAR(char *page, char **start, off_t off, \
- int count, int *eof, void *data) \
+static int mdt_hsm_##VAR##_seq_show(struct seq_file *m, void *data) \
{ \
- struct mdt_device *mdt = data; \
+ struct mdt_device *mdt = m->private; \
struct coordinator *cdt = &mdt->mdt_coordinator; \
- int sz; \
ENTRY; \
\
- sz = snprintf(page, count, LPU64"\n", (__u64)cdt->VAR); \
- *eof = 1; \
- RETURN(sz); \
+ seq_printf(m, "%llu\n", (__u64)cdt->VAR); \
+ RETURN(0); \
} \
-static int lprocfs_wr_hsm_##VAR(struct file *file, const char *buffer, \
- unsigned long count, void *data) \
+static ssize_t \
+mdt_hsm_##VAR##_seq_write(struct file *file, const char __user *buffer, \
+ size_t count, loff_t *off) \
\
{ \
- struct mdt_device *mdt = data; \
+ struct seq_file *m = file->private_data; \
+ struct mdt_device *mdt = m->private; \
struct coordinator *cdt = &mdt->mdt_coordinator; \
- int val; \
- int rc; \
- ENTRY; \
+ unsigned int val; \
+ int rc; \
\
- rc = lprocfs_write_helper(buffer, count, &val); \
+ ENTRY; \
+ rc = kstrtouint_from_user(buffer, count, 0, &val); \
if (rc) \
RETURN(rc); \
- if (val > 0) { \
+ \
+ if (val != 0) { \
cdt->VAR = val; \
RETURN(count); \
} \
RETURN(-EINVAL); \
-}
+} \
GENERATE_PROC_METHOD(cdt_loop_period)
GENERATE_PROC_METHOD(cdt_grace_delay)
#define CDT_DISABLE_CMD "disabled"
#define CDT_PURGE_CMD "purge"
#define CDT_HELP_CMD "help"
+#define CDT_MAX_CMD_LEN 10
-int lprocfs_wr_hsm_cdt_control(struct file *file, const char *buffer,
- unsigned long count, void *data)
+ssize_t
+mdt_hsm_cdt_control_seq_write(struct file *file, const char __user *buffer,
+ size_t count, loff_t *off)
{
- struct obd_device *obd = data;
+ struct seq_file *m = file->private_data;
+ struct obd_device *obd = m->private;
struct mdt_device *mdt = mdt_dev(obd->obd_lu_dev);
struct coordinator *cdt = &(mdt->mdt_coordinator);
int rc, usage = 0;
+ char kernbuf[CDT_MAX_CMD_LEN];
ENTRY;
+ if (count == 0 || count >= sizeof(kernbuf))
+ RETURN(-EINVAL);
+
+ if (copy_from_user(kernbuf, buffer, count))
+ RETURN(-EFAULT);
+ kernbuf[count] = 0;
+
+ if (kernbuf[count - 1] == '\n')
+ kernbuf[count - 1] = 0;
+
rc = 0;
- if (strncmp(buffer, CDT_ENABLE_CMD, strlen(CDT_ENABLE_CMD)) == 0) {
+ if (strcmp(kernbuf, CDT_ENABLE_CMD) == 0) {
if (cdt->cdt_state == CDT_DISABLE) {
- cdt->cdt_state = CDT_RUNNING;
- mdt_hsm_cdt_wakeup(mdt);
+ rc = set_cdt_state(cdt, CDT_RUNNING);
+ mdt_hsm_cdt_event(cdt);
+ wake_up(&cdt->cdt_waitq);
} else {
rc = mdt_hsm_cdt_start(mdt);
}
- } else if (strncmp(buffer, CDT_STOP_CMD, strlen(CDT_STOP_CMD)) == 0) {
- cdt->cdt_state = CDT_STOPPING;
- } else if (strncmp(buffer, CDT_DISABLE_CMD,
- strlen(CDT_DISABLE_CMD)) == 0) {
- cdt->cdt_state = CDT_DISABLE;
- } else if (strncmp(buffer, CDT_PURGE_CMD, strlen(CDT_PURGE_CMD)) == 0) {
+ } else if (strcmp(kernbuf, CDT_STOP_CMD) == 0) {
+ if ((cdt->cdt_state == CDT_STOPPING) ||
+ (cdt->cdt_state == CDT_STOPPED)) {
+ CERROR("%s: Coordinator already stopped\n",
+ mdt_obd_name(mdt));
+ rc = -EALREADY;
+ } else {
+ rc = mdt_hsm_cdt_stop(mdt);
+ }
+ } else if (strcmp(kernbuf, CDT_DISABLE_CMD) == 0) {
+ if ((cdt->cdt_state == CDT_STOPPING) ||
+ (cdt->cdt_state == CDT_STOPPED)) {
+ CERROR("%s: Coordinator is stopped\n",
+ mdt_obd_name(mdt));
+ rc = -EINVAL;
+ } else {
+ rc = set_cdt_state(cdt, CDT_DISABLE);
+ }
+ } else if (strcmp(kernbuf, CDT_PURGE_CMD) == 0) {
rc = hsm_cancel_all_actions(mdt);
- } else if (strncmp(buffer, CDT_HELP_CMD, strlen(CDT_HELP_CMD)) == 0) {
+ } else if (strcmp(kernbuf, CDT_HELP_CMD) == 0) {
usage = 1;
} else {
usage = 1;
RETURN(count);
}
-int lprocfs_rd_hsm_cdt_control(char *page, char **start, off_t off,
- int count, int *eof, void *data)
+int mdt_hsm_cdt_control_seq_show(struct seq_file *m, void *data)
{
- struct obd_device *obd = data;
+ struct obd_device *obd = m->private;
struct coordinator *cdt;
- int sz;
ENTRY;
cdt = &(mdt_dev(obd->obd_lu_dev)->mdt_coordinator);
- *eof = 1;
-
- if (cdt->cdt_state == CDT_INIT)
- sz = snprintf(page, count, "init\n");
- else if (cdt->cdt_state == CDT_RUNNING)
- sz = snprintf(page, count, "enabled\n");
- else if (cdt->cdt_state == CDT_STOPPING)
- sz = snprintf(page, count, "stopping\n");
- else if (cdt->cdt_state == CDT_STOPPED)
- sz = snprintf(page, count, "stopped\n");
- else if (cdt->cdt_state == CDT_DISABLE)
- sz = snprintf(page, count, "disabled\n");
- else
- sz = snprintf(page, count, "unknown\n");
- RETURN(sz);
+ seq_printf(m, "%s\n", cdt_mdt_state2str(cdt->cdt_state));
+
+ RETURN(0);
}
static int
-lprocfs_rd_hsm_request_mask(char *page, char **start, off_t off,
- int count, int *eof, __u64 mask)
+mdt_hsm_request_mask_show(struct seq_file *m, __u64 mask)
{
- int i, rc = 0;
+ bool first = true;
+ int i;
ENTRY;
for (i = 0; i < 8 * sizeof(mask); i++) {
- if (mask & (1UL << i))
- rc += snprintf(page + rc, count - rc, "%s%s",
- rc == 0 ? "" : " ",
- hsm_copytool_action2name(i));
+ if (mask & (1UL << i)) {
+ seq_printf(m, "%s%s", first ? "" : " ",
+ hsm_copytool_action2name(i));
+ first = false;
+ }
}
+ seq_putc(m, '\n');
- rc += snprintf(page + rc, count - rc, "\n");
-
- RETURN(rc);
+ RETURN(0);
}
static int
-lprocfs_rd_hsm_user_request_mask(char *page, char **start, off_t off,
- int count, int *eof, void *data)
+mdt_hsm_user_request_mask_seq_show(struct seq_file *m, void *data)
{
- struct mdt_device *mdt = data;
+ struct mdt_device *mdt = m->private;
struct coordinator *cdt = &mdt->mdt_coordinator;
- return lprocfs_rd_hsm_request_mask(page, start, off, count, eof,
- cdt->cdt_user_request_mask);
+ return mdt_hsm_request_mask_show(m, cdt->cdt_user_request_mask);
}
static int
-lprocfs_rd_hsm_group_request_mask(char *page, char **start, off_t off,
- int count, int *eof, void *data)
+mdt_hsm_group_request_mask_seq_show(struct seq_file *m, void *data)
{
- struct mdt_device *mdt = data;
+ struct mdt_device *mdt = m->private;
struct coordinator *cdt = &mdt->mdt_coordinator;
- return lprocfs_rd_hsm_request_mask(page, start, off, count, eof,
- cdt->cdt_group_request_mask);
+ return mdt_hsm_request_mask_show(m, cdt->cdt_group_request_mask);
}
static int
-lprocfs_rd_hsm_other_request_mask(char *page, char **start, off_t off,
- int count, int *eof, void *data)
+mdt_hsm_other_request_mask_seq_show(struct seq_file *m, void *data)
{
- struct mdt_device *mdt = data;
+ struct mdt_device *mdt = m->private;
struct coordinator *cdt = &mdt->mdt_coordinator;
- return lprocfs_rd_hsm_request_mask(page, start, off, count, eof,
- cdt->cdt_other_request_mask);
+ return mdt_hsm_request_mask_show(m, cdt->cdt_other_request_mask);
}
static inline enum hsm_copytool_action
return -1;
}
-static int
-lprocfs_wr_hsm_request_mask(struct file *file, const char __user *user_buf,
- unsigned long user_count, __u64 *mask)
+static ssize_t
+mdt_write_hsm_request_mask(struct file *file, const char __user *user_buf,
+ size_t user_count, __u64 *mask)
{
char *buf, *pos, *name;
size_t buf_size;
RETURN(rc);
}
-static int
-lprocfs_wr_hsm_user_request_mask(struct file *file, const char __user *buf,
- unsigned long count, void *data)
+static ssize_t
+mdt_hsm_user_request_mask_seq_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *off)
{
- struct mdt_device *mdt = data;
+ struct seq_file *m = file->private_data;
+ struct mdt_device *mdt = m->private;
struct coordinator *cdt = &mdt->mdt_coordinator;
- return lprocfs_wr_hsm_request_mask(file, buf, count,
+ return mdt_write_hsm_request_mask(file, buf, count,
&cdt->cdt_user_request_mask);
}
-static int
-lprocfs_wr_hsm_group_request_mask(struct file *file, const char __user *buf,
- unsigned long count, void *data)
+static ssize_t
+mdt_hsm_group_request_mask_seq_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *off)
{
- struct mdt_device *mdt = data;
- struct coordinator *cdt = &mdt->mdt_coordinator;
+ struct seq_file *m = file->private_data;
+ struct mdt_device *mdt = m->private;
+ struct coordinator *cdt = &mdt->mdt_coordinator;
- return lprocfs_wr_hsm_request_mask(file, buf, count,
+ return mdt_write_hsm_request_mask(file, buf, count,
&cdt->cdt_group_request_mask);
}
-static int
-lprocfs_wr_hsm_other_request_mask(struct file *file, const char __user *buf,
- unsigned long count, void *data)
+static ssize_t
+mdt_hsm_other_request_mask_seq_write(struct file *file, const char __user *buf,
+ size_t count, loff_t *off)
{
- struct mdt_device *mdt = data;
- struct coordinator *cdt = &mdt->mdt_coordinator;
+ struct seq_file *m = file->private_data;
+ struct mdt_device *mdt = m->private;
+ struct coordinator *cdt = &mdt->mdt_coordinator;
- return lprocfs_wr_hsm_request_mask(file, buf, count,
+ return mdt_write_hsm_request_mask(file, buf, count,
&cdt->cdt_other_request_mask);
}
+static int mdt_hsm_cdt_raolu_seq_show(struct seq_file *m, void *data)
+{
+ struct mdt_device *mdt = m->private;
+ struct coordinator *cdt = &mdt->mdt_coordinator;
+ ENTRY;
+
+ seq_printf(m, "%d\n", (int)cdt->cdt_remove_archive_on_last_unlink);
+ RETURN(0);
+}
+
+static ssize_t
+mdt_hsm_cdt_raolu_seq_write(struct file *file, const char __user *buffer,
+ size_t count, loff_t *off)
+
+{
+ struct seq_file *m = file->private_data;
+ struct mdt_device *mdt = m->private;
+ struct coordinator *cdt = &mdt->mdt_coordinator;
+ bool val;
+ int rc;
+
+ ENTRY;
+ rc = kstrtobool_from_user(buffer, count, &val);
+ if (rc < 0)
+ RETURN(rc);
+
+ cdt->cdt_remove_archive_on_last_unlink = val;
+ RETURN(count);
+}
+
+LPROC_SEQ_FOPS(mdt_hsm_cdt_loop_period);
+LPROC_SEQ_FOPS(mdt_hsm_cdt_grace_delay);
+LPROC_SEQ_FOPS(mdt_hsm_cdt_active_req_timeout);
+LPROC_SEQ_FOPS(mdt_hsm_cdt_max_requests);
+LPROC_SEQ_FOPS(mdt_hsm_cdt_default_archive_id);
+LPROC_SEQ_FOPS(mdt_hsm_user_request_mask);
+LPROC_SEQ_FOPS(mdt_hsm_group_request_mask);
+LPROC_SEQ_FOPS(mdt_hsm_other_request_mask);
+LPROC_SEQ_FOPS(mdt_hsm_cdt_raolu);
+
+/* Read-only proc files for request counters */
+static int mdt_hsm_cdt_archive_count_seq_show(struct seq_file *m, void *data)
+{
+ struct mdt_device *mdt = m->private;
+ struct coordinator *cdt = &mdt->mdt_coordinator;
+ ENTRY;
+
+ seq_printf(m, "%d\n", atomic_read(&cdt->cdt_archive_count));
+ RETURN(0);
+}
+
+static int mdt_hsm_cdt_restore_count_seq_show(struct seq_file *m, void *data)
+{
+ struct mdt_device *mdt = m->private;
+ struct coordinator *cdt = &mdt->mdt_coordinator;
+ ENTRY;
+
+ seq_printf(m, "%d\n", atomic_read(&cdt->cdt_restore_count));
+ RETURN(0);
+}
+
+static int mdt_hsm_cdt_remove_count_seq_show(struct seq_file *m, void *data)
+{
+ struct mdt_device *mdt = m->private;
+ struct coordinator *cdt = &mdt->mdt_coordinator;
+ ENTRY;
+
+ seq_printf(m, "%d\n", atomic_read(&cdt->cdt_remove_count));
+ RETURN(0);
+}
+
+LPROC_SEQ_FOPS_RO(mdt_hsm_cdt_archive_count);
+LPROC_SEQ_FOPS_RO(mdt_hsm_cdt_restore_count);
+LPROC_SEQ_FOPS_RO(mdt_hsm_cdt_remove_count);
+
static struct lprocfs_vars lprocfs_mdt_hsm_vars[] = {
- { "agents", NULL, NULL, NULL, &mdt_hsm_agent_fops,
- 0 },
- { "actions", NULL, NULL, NULL, &mdt_hsm_actions_fops,
- 0444 },
- { "default_archive_id", lprocfs_rd_hsm_cdt_default_archive_id,
- lprocfs_wr_hsm_cdt_default_archive_id,
- NULL, NULL, 0 },
- { "grace_delay", lprocfs_rd_hsm_cdt_grace_delay,
- lprocfs_wr_hsm_cdt_grace_delay,
- NULL, NULL, 0 },
- { "loop_period", lprocfs_rd_hsm_cdt_loop_period,
- lprocfs_wr_hsm_cdt_loop_period,
- NULL, NULL, 0 },
- { "max_requests", lprocfs_rd_hsm_cdt_max_requests,
- lprocfs_wr_hsm_cdt_max_requests,
- NULL, NULL, 0 },
- { "policy", lprocfs_rd_hsm_policy,
- lprocfs_wr_hsm_policy,
- NULL, NULL, 0 },
- { "active_request_timeout", lprocfs_rd_hsm_cdt_active_req_timeout,
- lprocfs_wr_hsm_cdt_active_req_timeout,
- NULL, NULL, 0 },
- { "active_requests", NULL, NULL, NULL,
- &mdt_hsm_active_requests_fops, 0 },
- { "user_request_mask", lprocfs_rd_hsm_user_request_mask,
- lprocfs_wr_hsm_user_request_mask, },
- { "group_request_mask", lprocfs_rd_hsm_group_request_mask,
- lprocfs_wr_hsm_group_request_mask, },
- { "other_request_mask", lprocfs_rd_hsm_other_request_mask,
- lprocfs_wr_hsm_other_request_mask, },
+ { .name = "agents",
+ .fops = &mdt_hsm_agent_fops },
+ { .name = "actions",
+ .fops = &mdt_hsm_actions_fops,
+ .proc_mode = 0444 },
+ { .name = "default_archive_id",
+ .fops = &mdt_hsm_cdt_default_archive_id_fops },
+ { .name = "grace_delay",
+ .fops = &mdt_hsm_cdt_grace_delay_fops },
+ { .name = "loop_period",
+ .fops = &mdt_hsm_cdt_loop_period_fops },
+ { .name = "max_requests",
+ .fops = &mdt_hsm_cdt_max_requests_fops },
+ { .name = "policy",
+ .fops = &mdt_hsm_policy_fops },
+ { .name = "active_request_timeout",
+ .fops = &mdt_hsm_cdt_active_req_timeout_fops },
+ { .name = "active_requests",
+ .fops = &mdt_hsm_active_requests_fops },
+ { .name = "user_request_mask",
+ .fops = &mdt_hsm_user_request_mask_fops, },
+ { .name = "group_request_mask",
+ .fops = &mdt_hsm_group_request_mask_fops, },
+ { .name = "other_request_mask",
+ .fops = &mdt_hsm_other_request_mask_fops, },
+ { .name = "remove_archive_on_last_unlink",
+ .fops = &mdt_hsm_cdt_raolu_fops, },
+ { .name = "archive_count",
+ .fops = &mdt_hsm_cdt_archive_count_fops, },
+ { .name = "restore_count",
+ .fops = &mdt_hsm_cdt_restore_count_fops, },
+ { .name = "remove_count",
+ .fops = &mdt_hsm_cdt_remove_count_fops, },
{ 0 }
};
git://git.whamcloud.com / fs / lustre-release.git / blobdiff