-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * GPL HEADER START
*
- * Copyright (C) 2002 Cluster File Systems, Inc.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * This file is part of Lustre, http://www.lustre.org.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
*
- * Lustre is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
*
- * Lustre is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
*
- * You should have received a copy of the GNU General Public License
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
*
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2012, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
*/
#define DEBUG_SUBSYSTEM S_CLASS
-#include <linux/lustre_lite.h>
-#include <linux/lprocfs_status.h>
+#ifndef __KERNEL__
+# include <liblustre.h>
+#endif
+
+#include <obd_support.h>
+#include <obd.h>
+#include <lprocfs_status.h>
+#include <lustre/lustre_idl.h>
+#include <lustre_net.h>
+#include <obd_class.h>
+#include "ptlrpc_internal.h"
+
+
+struct ll_rpc_opcode {
+ __u32 opcode;
+ const char *opname;
+} ll_rpc_opcode_table[LUSTRE_MAX_OPCODES] = {
+ { OST_REPLY, "ost_reply" },
+ { OST_GETATTR, "ost_getattr" },
+ { OST_SETATTR, "ost_setattr" },
+ { OST_READ, "ost_read" },
+ { OST_WRITE, "ost_write" },
+ { OST_CREATE , "ost_create" },
+ { OST_DESTROY, "ost_destroy" },
+ { OST_GET_INFO, "ost_get_info" },
+ { OST_CONNECT, "ost_connect" },
+ { OST_DISCONNECT, "ost_disconnect" },
+ { OST_PUNCH, "ost_punch" },
+ { OST_OPEN, "ost_open" },
+ { OST_CLOSE, "ost_close" },
+ { OST_STATFS, "ost_statfs" },
+ { 14, NULL }, /* formerly OST_SAN_READ */
+ { 15, NULL }, /* formerly OST_SAN_WRITE */
+ { OST_SYNC, "ost_sync" },
+ { OST_SET_INFO, "ost_set_info" },
+ { OST_QUOTACHECK, "ost_quotacheck" },
+ { OST_QUOTACTL, "ost_quotactl" },
+ { OST_QUOTA_ADJUST_QUNIT, "ost_quota_adjust_qunit" },
+ { MDS_GETATTR, "mds_getattr" },
+ { MDS_GETATTR_NAME, "mds_getattr_lock" },
+ { MDS_CLOSE, "mds_close" },
+ { MDS_REINT, "mds_reint" },
+ { MDS_READPAGE, "mds_readpage" },
+ { MDS_CONNECT, "mds_connect" },
+ { MDS_DISCONNECT, "mds_disconnect" },
+ { MDS_GETSTATUS, "mds_getstatus" },
+ { MDS_STATFS, "mds_statfs" },
+ { MDS_PIN, "mds_pin" },
+ { MDS_UNPIN, "mds_unpin" },
+ { MDS_SYNC, "mds_sync" },
+ { MDS_DONE_WRITING, "mds_done_writing" },
+ { MDS_SET_INFO, "mds_set_info" },
+ { MDS_QUOTACHECK, "mds_quotacheck" },
+ { MDS_QUOTACTL, "mds_quotactl" },
+ { MDS_GETXATTR, "mds_getxattr" },
+ { MDS_SETXATTR, "mds_setxattr" },
+ { MDS_WRITEPAGE, "mds_writepage" },
+ { MDS_IS_SUBDIR, "mds_is_subdir" },
+ { MDS_GET_INFO, "mds_get_info" },
+ { MDS_HSM_STATE_GET, "mds_hsm_state_get" },
+ { MDS_HSM_STATE_SET, "mds_hsm_state_set" },
+ { MDS_HSM_ACTION, "mds_hsm_action" },
+ { MDS_HSM_PROGRESS, "mds_hsm_progress" },
+ { MDS_HSM_REQUEST, "mds_hsm_request" },
+ { MDS_HSM_CT_REGISTER, "mds_hsm_ct_register" },
+ { MDS_HSM_CT_UNREGISTER, "mds_hsm_ct_unregister" },
+ { MDS_SWAP_LAYOUTS, "mds_swap_layouts" },
+ { LDLM_ENQUEUE, "ldlm_enqueue" },
+ { LDLM_CONVERT, "ldlm_convert" },
+ { LDLM_CANCEL, "ldlm_cancel" },
+ { LDLM_BL_CALLBACK, "ldlm_bl_callback" },
+ { LDLM_CP_CALLBACK, "ldlm_cp_callback" },
+ { LDLM_GL_CALLBACK, "ldlm_gl_callback" },
+ { LDLM_SET_INFO, "ldlm_set_info" },
+ { MGS_CONNECT, "mgs_connect" },
+ { MGS_DISCONNECT, "mgs_disconnect" },
+ { MGS_EXCEPTION, "mgs_exception" },
+ { MGS_TARGET_REG, "mgs_target_reg" },
+ { MGS_TARGET_DEL, "mgs_target_del" },
+ { MGS_SET_INFO, "mgs_set_info" },
+ { MGS_CONFIG_READ, "mgs_config_read" },
+ { OBD_PING, "obd_ping" },
+ { OBD_LOG_CANCEL, "llog_origin_handle_cancel" },
+ { OBD_QC_CALLBACK, "obd_quota_callback" },
+ { OBD_IDX_READ, "dt_index_read" },
+ { LLOG_ORIGIN_HANDLE_CREATE, "llog_origin_handle_create" },
+ { LLOG_ORIGIN_HANDLE_NEXT_BLOCK, "llog_origin_handle_next_block" },
+ { LLOG_ORIGIN_HANDLE_READ_HEADER,"llog_origin_handle_read_header" },
+ { LLOG_ORIGIN_HANDLE_WRITE_REC, "llog_origin_handle_write_rec" },
+ { LLOG_ORIGIN_HANDLE_CLOSE, "llog_origin_handle_close" },
+ { LLOG_ORIGIN_CONNECT, "llog_origin_connect" },
+ { LLOG_CATINFO, "llog_catinfo" },
+ { LLOG_ORIGIN_HANDLE_PREV_BLOCK, "llog_origin_handle_prev_block" },
+ { LLOG_ORIGIN_HANDLE_DESTROY, "llog_origin_handle_destroy" },
+ { QUOTA_DQACQ, "quota_acquire" },
+ { QUOTA_DQREL, "quota_release" },
+ { SEQ_QUERY, "seq_query" },
+ { SEC_CTX_INIT, "sec_ctx_init" },
+ { SEC_CTX_INIT_CONT,"sec_ctx_init_cont" },
+ { SEC_CTX_FINI, "sec_ctx_fini" },
+ { FLD_QUERY, "fld_query" },
+ { UPDATE_OBJ, "update_obj" },
+};
+
+struct ll_eopcode {
+ __u32 opcode;
+ const char *opname;
+} ll_eopcode_table[EXTRA_LAST_OPC] = {
+ { LDLM_GLIMPSE_ENQUEUE, "ldlm_glimpse_enqueue" },
+ { LDLM_PLAIN_ENQUEUE, "ldlm_plain_enqueue" },
+ { LDLM_EXTENT_ENQUEUE, "ldlm_extent_enqueue" },
+ { LDLM_FLOCK_ENQUEUE, "ldlm_flock_enqueue" },
+ { LDLM_IBITS_ENQUEUE, "ldlm_ibits_enqueue" },
+ { MDS_REINT_SETATTR, "mds_reint_setattr" },
+ { MDS_REINT_CREATE, "mds_reint_create" },
+ { MDS_REINT_LINK, "mds_reint_link" },
+ { MDS_REINT_UNLINK, "mds_reint_unlink" },
+ { MDS_REINT_RENAME, "mds_reint_rename" },
+ { MDS_REINT_OPEN, "mds_reint_open" },
+ { MDS_REINT_SETXATTR, "mds_reint_setxattr" },
+ { BRW_READ_BYTES, "read_bytes" },
+ { BRW_WRITE_BYTES, "write_bytes" },
+};
-int rd_uuid(char* page, char **start, off_t off,
- int count, int *eof, void *data)
+const char *ll_opcode2str(__u32 opcode)
{
- int len=0;
- len+=snprintf(page, count, "%s\n",
- ((struct obd_device*)data)->obd_uuid);
- return len;
+ /* When one of the assertions below fail, chances are that:
+ * 1) A new opcode was added in include/lustre/lustre_idl.h,
+ * but is missing from the table above.
+ * or 2) The opcode space was renumbered or rearranged,
+ * and the opcode_offset() function in
+ * ptlrpc_internal.h needs to be modified.
+ */
+ __u32 offset = opcode_offset(opcode);
+ LASSERTF(offset < LUSTRE_MAX_OPCODES,
+ "offset %u >= LUSTRE_MAX_OPCODES %u\n",
+ offset, LUSTRE_MAX_OPCODES);
+ LASSERTF(ll_rpc_opcode_table[offset].opcode == opcode,
+ "ll_rpc_opcode_table[%u].opcode %u != opcode %u\n",
+ offset, ll_rpc_opcode_table[offset].opcode, opcode);
+ return ll_rpc_opcode_table[offset].opname;
+}
+const char* ll_eopcode2str(__u32 opcode)
+{
+ LASSERT(ll_eopcode_table[opcode].opcode == opcode);
+ return ll_eopcode_table[opcode].opname;
}
+#ifdef LPROCFS
+void ptlrpc_lprocfs_register(struct proc_dir_entry *root, char *dir,
+ char *name, struct proc_dir_entry **procroot_ret,
+ struct lprocfs_stats **stats_ret)
+{
+ struct proc_dir_entry *svc_procroot;
+ struct lprocfs_stats *svc_stats;
+ int i, rc;
+ unsigned int svc_counter_config = LPROCFS_CNTR_AVGMINMAX |
+ LPROCFS_CNTR_STDDEV;
-struct lprocfs_vars status_var_nm_1[]={
- {"status/uuid", rd_uuid, 0},
- {0}
-};
-int rd_numdevices(char* page, char **start, off_t off,
- int count, int *eof, void *data)
+ LASSERT(*procroot_ret == NULL);
+ LASSERT(*stats_ret == NULL);
+
+ svc_stats = lprocfs_alloc_stats(EXTRA_MAX_OPCODES+LUSTRE_MAX_OPCODES,0);
+ if (svc_stats == NULL)
+ return;
+
+ if (dir) {
+ svc_procroot = lprocfs_register(dir, root, NULL, NULL);
+ if (IS_ERR(svc_procroot)) {
+ lprocfs_free_stats(&svc_stats);
+ return;
+ }
+ } else {
+ svc_procroot = root;
+ }
+
+ lprocfs_counter_init(svc_stats, PTLRPC_REQWAIT_CNTR,
+ svc_counter_config, "req_waittime", "usec");
+ lprocfs_counter_init(svc_stats, PTLRPC_REQQDEPTH_CNTR,
+ svc_counter_config, "req_qdepth", "reqs");
+ lprocfs_counter_init(svc_stats, PTLRPC_REQACTIVE_CNTR,
+ svc_counter_config, "req_active", "reqs");
+ lprocfs_counter_init(svc_stats, PTLRPC_TIMEOUT,
+ svc_counter_config, "req_timeout", "sec");
+ lprocfs_counter_init(svc_stats, PTLRPC_REQBUF_AVAIL_CNTR,
+ svc_counter_config, "reqbuf_avail", "bufs");
+ for (i = 0; i < EXTRA_LAST_OPC; i++) {
+ char *units;
+
+ switch(i) {
+ case BRW_WRITE_BYTES:
+ case BRW_READ_BYTES:
+ units = "bytes";
+ break;
+ default:
+ units = "reqs";
+ break;
+ }
+ lprocfs_counter_init(svc_stats, PTLRPC_LAST_CNTR + i,
+ svc_counter_config,
+ ll_eopcode2str(i), units);
+ }
+ for (i = 0; i < LUSTRE_MAX_OPCODES; i++) {
+ __u32 opcode = ll_rpc_opcode_table[i].opcode;
+ lprocfs_counter_init(svc_stats,
+ EXTRA_MAX_OPCODES + i, svc_counter_config,
+ ll_opcode2str(opcode), "usec");
+ }
+
+ rc = lprocfs_register_stats(svc_procroot, name, svc_stats);
+ if (rc < 0) {
+ if (dir)
+ lprocfs_remove(&svc_procroot);
+ lprocfs_free_stats(&svc_stats);
+ } else {
+ if (dir)
+ *procroot_ret = svc_procroot;
+ *stats_ret = svc_stats;
+ }
+}
+
+static int
+ptlrpc_lprocfs_read_req_history_len(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ struct ptlrpc_service *svc = data;
+ struct ptlrpc_service_part *svcpt;
+ int total = 0;
+ int i;
+
+ *eof = 1;
+
+ ptlrpc_service_for_each_part(svcpt, i, svc)
+ total += svcpt->scp_hist_nrqbds;
+
+ return snprintf(page, count, "%d\n", total);
+}
+
+static int
+ptlrpc_lprocfs_read_req_history_max(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ struct ptlrpc_service *svc = data;
+ struct ptlrpc_service_part *svcpt;
+ int total = 0;
+ int i;
+
+ *eof = 1;
+ ptlrpc_service_for_each_part(svcpt, i, svc)
+ total += svc->srv_hist_nrqbds_cpt_max;
+
+ return snprintf(page, count, "%d\n", total);
+}
+
+static int
+ptlrpc_lprocfs_write_req_history_max(struct file *file, const char *buffer,
+ unsigned long count, void *data)
+{
+ struct ptlrpc_service *svc = data;
+ int bufpages;
+ int val;
+ int rc;
+
+ rc = lprocfs_write_helper(buffer, count, &val);
+ if (rc < 0)
+ return rc;
+
+ if (val < 0)
+ return -ERANGE;
+
+ /* This sanity check is more of an insanity check; we can still
+ * hose a kernel by allowing the request history to grow too
+ * far. */
+ bufpages = (svc->srv_buf_size + CFS_PAGE_SIZE - 1) >> CFS_PAGE_SHIFT;
+ if (val > cfs_num_physpages/(2 * bufpages))
+ return -ERANGE;
+
+ spin_lock(&svc->srv_lock);
+
+ if (val == 0)
+ svc->srv_hist_nrqbds_cpt_max = 0;
+ else
+ svc->srv_hist_nrqbds_cpt_max = max(1, (val / svc->srv_ncpts));
+
+ spin_unlock(&svc->srv_lock);
+
+ return count;
+}
+
+static int
+ptlrpc_lprocfs_rd_threads_min(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ struct ptlrpc_service *svc = data;
+
+ return snprintf(page, count, "%d\n",
+ svc->srv_nthrs_cpt_init * svc->srv_ncpts);
+}
+
+static int
+ptlrpc_lprocfs_wr_threads_min(struct file *file, const char *buffer,
+ unsigned long count, void *data)
+{
+ struct ptlrpc_service *svc = data;
+ int val;
+ int rc = lprocfs_write_helper(buffer, count, &val);
+
+ if (rc < 0)
+ return rc;
+
+ if (val / svc->srv_ncpts < PTLRPC_NTHRS_INIT)
+ return -ERANGE;
+
+ spin_lock(&svc->srv_lock);
+ if (val > svc->srv_nthrs_cpt_limit * svc->srv_ncpts) {
+ spin_unlock(&svc->srv_lock);
+ return -ERANGE;
+ }
+
+ svc->srv_nthrs_cpt_init = val / svc->srv_ncpts;
+
+ spin_unlock(&svc->srv_lock);
+
+ return count;
+}
+
+static int
+ptlrpc_lprocfs_rd_threads_started(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ struct ptlrpc_service *svc = data;
+ struct ptlrpc_service_part *svcpt;
+ int total = 0;
+ int i;
+
+ ptlrpc_service_for_each_part(svcpt, i, svc)
+ total += svcpt->scp_nthrs_running;
+
+ return snprintf(page, count, "%d\n", total);
+}
+
+static int
+ptlrpc_lprocfs_rd_threads_max(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ struct ptlrpc_service *svc = data;
+
+ return snprintf(page, count, "%d\n",
+ svc->srv_nthrs_cpt_limit * svc->srv_ncpts);
+}
+
+static int
+ptlrpc_lprocfs_wr_threads_max(struct file *file, const char *buffer,
+ unsigned long count, void *data)
+{
+ struct ptlrpc_service *svc = data;
+ int val;
+ int rc = lprocfs_write_helper(buffer, count, &val);
+
+ if (rc < 0)
+ return rc;
+
+ if (val / svc->srv_ncpts < PTLRPC_NTHRS_INIT)
+ return -ERANGE;
+
+ spin_lock(&svc->srv_lock);
+ if (val < svc->srv_nthrs_cpt_init * svc->srv_ncpts) {
+ spin_unlock(&svc->srv_lock);
+ return -ERANGE;
+ }
+
+ svc->srv_nthrs_cpt_limit = val / svc->srv_ncpts;
+
+ spin_unlock(&svc->srv_lock);
+
+ return count;
+}
+
+/**
+ * \addtogoup nrs
+ * @{
+ */
+extern struct nrs_core nrs_core;
+
+/**
+ * Translates \e ptlrpc_nrs_pol_state values to human-readable strings.
+ *
+ * \param[in] state The policy state
+ */
+static const char *
+nrs_state2str(enum ptlrpc_nrs_pol_state state)
+{
+ switch (state) {
+ default:
+ LBUG();
+ case NRS_POL_STATE_INVALID:
+ return "invalid";
+ case NRS_POL_STATE_UNAVAIL:
+ return "unavail";
+ case NRS_POL_STATE_STOPPED:
+ return "stopped";
+ case NRS_POL_STATE_STOPPING:
+ return "stopping";
+ case NRS_POL_STATE_STARTING:
+ return "starting";
+ case NRS_POL_STATE_STARTED:
+ return "started";
+ }
+}
+
+/**
+ * Obtains status information for \a policy.
+ *
+ * Information is copied in \a info.
+ *
+ * \param[in] policy The policy
+ * \param[out] info Holds returned status information
+ */
+void
+nrs_policy_get_info_locked(struct ptlrpc_nrs_policy *policy,
+ struct ptlrpc_nrs_pol_info *info)
+{
+ LASSERT(policy != NULL);
+ LASSERT(info != NULL);
+ LASSERT(spin_is_locked(&policy->pol_nrs->nrs_lock));
+
+ memcpy(info->pi_name, policy->pol_name, NRS_POL_NAME_MAX);
+
+ info->pi_fallback = !!(policy->pol_flags & PTLRPC_NRS_FL_FALLBACK);
+ info->pi_state = policy->pol_state;
+ /**
+ * XXX: These are accessed without holding
+ * ptlrpc_service_part::scp_req_lock.
+ */
+ info->pi_req_queued = policy->pol_req_queued;
+ info->pi_req_started = policy->pol_req_started;
+}
+
+/**
+ * Reads and prints policy status information for all policies of a PTLRPC
+ * service.
+ */
+static int
+ptlrpc_lprocfs_rd_nrs(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ struct ptlrpc_service *svc = data;
+ struct ptlrpc_service_part *svcpt;
+ struct ptlrpc_nrs *nrs;
+ struct ptlrpc_nrs_policy *policy;
+ struct ptlrpc_nrs_pol_info *infos;
+ struct ptlrpc_nrs_pol_info tmp;
+ unsigned num_pols;
+ unsigned pol_idx = 0;
+ bool hp = false;
+ int i;
+ int rc = 0;
+ int rc2 = 0;
+ ENTRY;
+
+ /**
+ * Serialize NRS core lprocfs operations with policy registration/
+ * unregistration.
+ */
+ mutex_lock(&nrs_core.nrs_mutex);
+
+ /**
+ * Use the first service partition's regular NRS head in order to obtain
+ * the number of policies registered with NRS heads of this service. All
+ * service partitions will have the same number of policies.
+ */
+ nrs = nrs_svcpt2nrs(svc->srv_parts[0], false);
+
+ spin_lock(&nrs->nrs_lock);
+ num_pols = svc->srv_parts[0]->scp_nrs_reg.nrs_num_pols;
+ spin_unlock(&nrs->nrs_lock);
+
+ OBD_ALLOC(infos, num_pols * sizeof(*infos));
+ if (infos == NULL)
+ GOTO(out, rc = -ENOMEM);
+again:
+
+ ptlrpc_service_for_each_part(svcpt, i, svc) {
+ nrs = nrs_svcpt2nrs(svcpt, hp);
+ spin_lock(&nrs->nrs_lock);
+
+ pol_idx = 0;
+
+ cfs_list_for_each_entry(policy, &nrs->nrs_policy_list,
+ pol_list) {
+ LASSERT(pol_idx < num_pols);
+
+ nrs_policy_get_info_locked(policy, &tmp);
+ /**
+ * Copy values when handling the first service
+ * partition.
+ */
+ if (i == 0) {
+ memcpy(infos[pol_idx].pi_name, tmp.pi_name,
+ NRS_POL_NAME_MAX);
+ memcpy(&infos[pol_idx].pi_state, &tmp.pi_state,
+ sizeof(tmp.pi_state));
+ infos[pol_idx].pi_fallback = tmp.pi_fallback;
+ /**
+ * For the rest of the service partitions
+ * sanity-check the values we get.
+ */
+ } else {
+ LASSERT(strncmp(infos[pol_idx].pi_name,
+ tmp.pi_name,
+ NRS_POL_NAME_MAX) == 0);
+ /**
+ * Not asserting ptlrpc_nrs_pol_info::pi_state,
+ * because it may be different between
+ * instances of the same policy in different
+ * service partitions.
+ */
+ LASSERT(infos[pol_idx].pi_fallback ==
+ tmp.pi_fallback);
+ }
+
+ infos[pol_idx].pi_req_queued += tmp.pi_req_queued;
+ infos[pol_idx].pi_req_started += tmp.pi_req_started;
+
+ pol_idx++;
+ }
+ spin_unlock(&nrs->nrs_lock);
+ }
+
+ /**
+ * Policy status information output is in YAML format.
+ * For example:
+ *
+ * regular_requests:
+ * - name: fifo
+ * state: started
+ * fallback: yes
+ * queued: 0
+ * active: 0
+ *
+ * - name: crrn
+ * state: started
+ * fallback: no
+ * queued: 2015
+ * active: 384
+ *
+ * high_priority_requests:
+ * - name: fifo
+ * state: started
+ * fallback: yes
+ * queued: 0
+ * active: 2
+ *
+ * - name: crrn
+ * state: stopped
+ * fallback: no
+ * queued: 0
+ * active: 0
+ */
+ rc2 = snprintf(page + rc, count - rc,
+ "%s\n", !hp ?
+ "\nregular_requests:" :
+ "high_priority_requests:");
+
+ if (rc2 >= count - rc) {
+ /** Output was truncated */
+ GOTO(out, rc = -EFBIG);
+ }
+
+ rc += rc2;
+
+ for (pol_idx = 0; pol_idx < num_pols; pol_idx++) {
+ rc2 = snprintf(page + rc, count - rc,
+ " - name: %s\n"
+ " state: %s\n"
+ " fallback: %s\n"
+ " queued: %-20d\n"
+ " active: %-20d\n\n",
+ infos[pol_idx].pi_name,
+ nrs_state2str(infos[pol_idx].pi_state),
+ infos[pol_idx].pi_fallback ? "yes" : "no",
+ (int)infos[pol_idx].pi_req_queued,
+ (int)infos[pol_idx].pi_req_started);
+
+
+ if (rc2 >= count - rc) {
+ /** Output was truncated */
+ GOTO(out, rc = -EFBIG);
+ }
+
+ rc += rc2;
+ }
+
+ if (!hp && nrs_svc_has_hp(svc)) {
+ memset(infos, 0, num_pols * sizeof(*infos));
+
+ /**
+ * Redo the processing for the service's HP NRS heads' policies.
+ */
+ hp = true;
+ goto again;
+ }
+
+ *eof = 1;
+
+out:
+ if (infos)
+ OBD_FREE(infos, num_pols * sizeof(*infos));
+
+ mutex_unlock(&nrs_core.nrs_mutex);
+
+ RETURN(rc);
+}
+
+/**
+ * The longest valid command string is the maxium policy name size, plus the
+ * length of the " reg" substring
+ */
+#define LPROCFS_NRS_WR_MAX_CMD (NRS_POL_NAME_MAX + sizeof(" reg") - 1)
+
+/**
+ * Starts and stops a given policy on a PTLRPC service.
+ *
+ * Commands consist of the policy name, followed by an optional [reg|hp] token;
+ * if the optional token is omitted, the operation is performed on both the
+ * regular and high-priority (if the service has one) NRS head.
+ */
+static int
+ptlrpc_lprocfs_wr_nrs(struct file *file, const char *buffer,
+ unsigned long count, void *data)
{
- struct obd_type* class=(struct obd_type*)data;
- int len=0;
- len+=snprintf(page, count, "%d\n", class->typ_refcnt);
- return len;
+ struct ptlrpc_service *svc = data;
+ enum ptlrpc_nrs_queue_type queue = PTLRPC_NRS_QUEUE_BOTH;
+ char *cmd;
+ char *cmd_copy = NULL;
+ char *token;
+ int rc = 0;
+ ENTRY;
+
+ if (count >= LPROCFS_NRS_WR_MAX_CMD)
+ GOTO(out, rc = -EINVAL);
+
+ OBD_ALLOC(cmd, LPROCFS_NRS_WR_MAX_CMD);
+ if (cmd == NULL)
+ GOTO(out, rc = -ENOMEM);
+ /**
+ * strsep() modifies its argument, so keep a copy
+ */
+ cmd_copy = cmd;
+
+ if (cfs_copy_from_user(cmd, buffer, count))
+ GOTO(out, rc = -EFAULT);
+
+ cmd[count] = '\0';
+
+ token = strsep(&cmd, " ");
+
+ if (strlen(token) > NRS_POL_NAME_MAX - 1)
+ GOTO(out, rc = -EINVAL);
+
+ /**
+ * No [reg|hp] token has been specified
+ */
+ if (cmd == NULL)
+ goto default_queue;
+
+ /**
+ * The second token is either NULL, or an optional [reg|hp] string
+ */
+ if (strcmp(cmd, "reg") == 0)
+ queue = PTLRPC_NRS_QUEUE_REG;
+ else if (strcmp(cmd, "hp") == 0)
+ queue = PTLRPC_NRS_QUEUE_HP;
+ else
+ GOTO(out, rc = -EINVAL);
+
+default_queue:
+
+ if (queue == PTLRPC_NRS_QUEUE_HP && !nrs_svc_has_hp(svc))
+ GOTO(out, rc = -ENODEV);
+ else if (queue == PTLRPC_NRS_QUEUE_BOTH && !nrs_svc_has_hp(svc))
+ queue = PTLRPC_NRS_QUEUE_REG;
+
+ /**
+ * Serialize NRS core lprocfs operations with policy registration/
+ * unregistration.
+ */
+ mutex_lock(&nrs_core.nrs_mutex);
+
+ rc = ptlrpc_nrs_policy_control(svc, queue, token, PTLRPC_NRS_CTL_START,
+ false, NULL);
+
+ mutex_unlock(&nrs_core.nrs_mutex);
+out:
+ if (cmd_copy)
+ OBD_FREE(cmd_copy, LPROCFS_NRS_WR_MAX_CMD);
+
+ RETURN(rc < 0 ? rc : count);
}
-struct lprocfs_vars status_class_var[]={
- {"status/num_devices", rd_numdevices, 0},
- {0}
+/** @} nrs */
+
+struct ptlrpc_srh_iterator {
+ int srhi_idx;
+ __u64 srhi_seq;
+ struct ptlrpc_request *srhi_req;
};
+
+int
+ptlrpc_lprocfs_svc_req_history_seek(struct ptlrpc_service_part *svcpt,
+ struct ptlrpc_srh_iterator *srhi,
+ __u64 seq)
+{
+ cfs_list_t *e;
+ struct ptlrpc_request *req;
+
+ if (srhi->srhi_req != NULL &&
+ srhi->srhi_seq > svcpt->scp_hist_seq_culled &&
+ srhi->srhi_seq <= seq) {
+ /* If srhi_req was set previously, hasn't been culled and
+ * we're searching for a seq on or after it (i.e. more
+ * recent), search from it onwards.
+ * Since the service history is LRU (i.e. culled reqs will
+ * be near the head), we shouldn't have to do long
+ * re-scans */
+ LASSERTF(srhi->srhi_seq == srhi->srhi_req->rq_history_seq,
+ "%s:%d: seek seq "LPU64", request seq "LPU64"\n",
+ svcpt->scp_service->srv_name, svcpt->scp_cpt,
+ srhi->srhi_seq, srhi->srhi_req->rq_history_seq);
+ LASSERTF(!cfs_list_empty(&svcpt->scp_hist_reqs),
+ "%s:%d: seek offset "LPU64", request seq "LPU64", "
+ "last culled "LPU64"\n",
+ svcpt->scp_service->srv_name, svcpt->scp_cpt,
+ seq, srhi->srhi_seq, svcpt->scp_hist_seq_culled);
+ e = &srhi->srhi_req->rq_history_list;
+ } else {
+ /* search from start */
+ e = svcpt->scp_hist_reqs.next;
+ }
+
+ while (e != &svcpt->scp_hist_reqs) {
+ req = cfs_list_entry(e, struct ptlrpc_request, rq_history_list);
+
+ if (req->rq_history_seq >= seq) {
+ srhi->srhi_seq = req->rq_history_seq;
+ srhi->srhi_req = req;
+ return 0;
+ }
+ e = e->next;
+ }
+
+ return -ENOENT;
+}
+
+/*
+ * ptlrpc history sequence is used as "position" of seq_file, in some case,
+ * seq_read() will increase "position" to indicate reading the next
+ * element, however, low bits of history sequence are reserved for CPT id
+ * (check the details from comments before ptlrpc_req_add_history), which
+ * means seq_read() might change CPT id of history sequence and never
+ * finish reading of requests on a CPT. To make it work, we have to shift
+ * CPT id to high bits and timestamp to low bits, so seq_read() will only
+ * increase timestamp which can correctly indicate the next position.
+ */
+
+/* convert seq_file pos to cpt */
+#define PTLRPC_REQ_POS2CPT(svc, pos) \
+ ((svc)->srv_cpt_bits == 0 ? 0 : \
+ (__u64)(pos) >> (64 - (svc)->srv_cpt_bits))
+
+/* make up seq_file pos from cpt */
+#define PTLRPC_REQ_CPT2POS(svc, cpt) \
+ ((svc)->srv_cpt_bits == 0 ? 0 : \
+ (cpt) << (64 - (svc)->srv_cpt_bits))
+
+/* convert sequence to position */
+#define PTLRPC_REQ_SEQ2POS(svc, seq) \
+ ((svc)->srv_cpt_bits == 0 ? (seq) : \
+ ((seq) >> (svc)->srv_cpt_bits) | \
+ ((seq) << (64 - (svc)->srv_cpt_bits)))
+
+/* convert position to sequence */
+#define PTLRPC_REQ_POS2SEQ(svc, pos) \
+ ((svc)->srv_cpt_bits == 0 ? (pos) : \
+ ((__u64)(pos) << (svc)->srv_cpt_bits) | \
+ ((__u64)(pos) >> (64 - (svc)->srv_cpt_bits)))
+
+static void *
+ptlrpc_lprocfs_svc_req_history_start(struct seq_file *s, loff_t *pos)
+{
+ struct ptlrpc_service *svc = s->private;
+ struct ptlrpc_service_part *svcpt;
+ struct ptlrpc_srh_iterator *srhi;
+ unsigned int cpt;
+ int rc;
+ int i;
+
+ if (sizeof(loff_t) != sizeof(__u64)) { /* can't support */
+ CWARN("Failed to read request history because size of loff_t "
+ "%d can't match size of u64\n", (int)sizeof(loff_t));
+ return NULL;
+ }
+
+ OBD_ALLOC(srhi, sizeof(*srhi));
+ if (srhi == NULL)
+ return NULL;
+
+ srhi->srhi_seq = 0;
+ srhi->srhi_req = NULL;
+
+ cpt = PTLRPC_REQ_POS2CPT(svc, *pos);
+
+ ptlrpc_service_for_each_part(svcpt, i, svc) {
+ if (i < cpt) /* skip */
+ continue;
+ if (i > cpt) /* make up the lowest position for this CPT */
+ *pos = PTLRPC_REQ_CPT2POS(svc, i);
+
+ spin_lock(&svcpt->scp_lock);
+ rc = ptlrpc_lprocfs_svc_req_history_seek(svcpt, srhi,
+ PTLRPC_REQ_POS2SEQ(svc, *pos));
+ spin_unlock(&svcpt->scp_lock);
+ if (rc == 0) {
+ *pos = PTLRPC_REQ_SEQ2POS(svc, srhi->srhi_seq);
+ srhi->srhi_idx = i;
+ return srhi;
+ }
+ }
+
+ OBD_FREE(srhi, sizeof(*srhi));
+ return NULL;
+}
+
+static void
+ptlrpc_lprocfs_svc_req_history_stop(struct seq_file *s, void *iter)
+{
+ struct ptlrpc_srh_iterator *srhi = iter;
+
+ if (srhi != NULL)
+ OBD_FREE(srhi, sizeof(*srhi));
+}
+
+static void *
+ptlrpc_lprocfs_svc_req_history_next(struct seq_file *s,
+ void *iter, loff_t *pos)
+{
+ struct ptlrpc_service *svc = s->private;
+ struct ptlrpc_srh_iterator *srhi = iter;
+ struct ptlrpc_service_part *svcpt;
+ __u64 seq;
+ int rc;
+ int i;
+
+ for (i = srhi->srhi_idx; i < svc->srv_ncpts; i++) {
+ svcpt = svc->srv_parts[i];
+
+ if (i > srhi->srhi_idx) { /* reset iterator for a new CPT */
+ srhi->srhi_req = NULL;
+ seq = srhi->srhi_seq = 0;
+ } else { /* the next sequence */
+ seq = srhi->srhi_seq + (1 << svc->srv_cpt_bits);
+ }
+
+ spin_lock(&svcpt->scp_lock);
+ rc = ptlrpc_lprocfs_svc_req_history_seek(svcpt, srhi, seq);
+ spin_unlock(&svcpt->scp_lock);
+ if (rc == 0) {
+ *pos = PTLRPC_REQ_SEQ2POS(svc, srhi->srhi_seq);
+ srhi->srhi_idx = i;
+ return srhi;
+ }
+ }
+
+ OBD_FREE(srhi, sizeof(*srhi));
+ return NULL;
+}
+
+/* common ost/mdt so_req_printer */
+void target_print_req(void *seq_file, struct ptlrpc_request *req)
+{
+ /* Called holding srv_lock with irqs disabled.
+ * Print specific req contents and a newline.
+ * CAVEAT EMPTOR: check request message length before printing!!!
+ * You might have received any old crap so you must be just as
+ * careful here as the service's request parser!!! */
+ struct seq_file *sf = seq_file;
+
+ switch (req->rq_phase) {
+ case RQ_PHASE_NEW:
+ /* still awaiting a service thread's attention, or rejected
+ * because the generic request message didn't unpack */
+ seq_printf(sf, "<not swabbed>\n");
+ break;
+ case RQ_PHASE_INTERPRET:
+ /* being handled, so basic msg swabbed, and opc is valid
+ * but racing with mds_handle() */
+ case RQ_PHASE_COMPLETE:
+ /* been handled by mds_handle() reply state possibly still
+ * volatile */
+ seq_printf(sf, "opc %d\n", lustre_msg_get_opc(req->rq_reqmsg));
+ break;
+ default:
+ DEBUG_REQ(D_ERROR, req, "bad phase %d", req->rq_phase);
+ }
+}
+EXPORT_SYMBOL(target_print_req);
+
+static int ptlrpc_lprocfs_svc_req_history_show(struct seq_file *s, void *iter)
+{
+ struct ptlrpc_service *svc = s->private;
+ struct ptlrpc_srh_iterator *srhi = iter;
+ struct ptlrpc_service_part *svcpt;
+ struct ptlrpc_request *req;
+ int rc;
+
+ LASSERT(srhi->srhi_idx < svc->srv_ncpts);
+
+ svcpt = svc->srv_parts[srhi->srhi_idx];
+
+ spin_lock(&svcpt->scp_lock);
+
+ rc = ptlrpc_lprocfs_svc_req_history_seek(svcpt, srhi, srhi->srhi_seq);
+
+ if (rc == 0) {
+ req = srhi->srhi_req;
+
+ /* Print common req fields.
+ * CAVEAT EMPTOR: we're racing with the service handler
+ * here. The request could contain any old crap, so you
+ * must be just as careful as the service's request
+ * parser. Currently I only print stuff here I know is OK
+ * to look at coz it was set up in request_in_callback()!!! */
+ seq_printf(s, LPD64":%s:%s:x"LPU64":%d:%s:%ld:%lds(%+lds) ",
+ req->rq_history_seq, libcfs_nid2str(req->rq_self),
+ libcfs_id2str(req->rq_peer), req->rq_xid,
+ req->rq_reqlen, ptlrpc_rqphase2str(req),
+ req->rq_arrival_time.tv_sec,
+ req->rq_sent - req->rq_arrival_time.tv_sec,
+ req->rq_sent - req->rq_deadline);
+ if (svc->srv_ops.so_req_printer == NULL)
+ seq_printf(s, "\n");
+ else
+ svc->srv_ops.so_req_printer(s, srhi->srhi_req);
+ }
+
+ spin_unlock(&svcpt->scp_lock);
+ return rc;
+}
+
+static int
+ptlrpc_lprocfs_svc_req_history_open(struct inode *inode, struct file *file)
+{
+ static struct seq_operations sops = {
+ .start = ptlrpc_lprocfs_svc_req_history_start,
+ .stop = ptlrpc_lprocfs_svc_req_history_stop,
+ .next = ptlrpc_lprocfs_svc_req_history_next,
+ .show = ptlrpc_lprocfs_svc_req_history_show,
+ };
+ struct proc_dir_entry *dp = PDE(inode);
+ struct seq_file *seqf;
+ int rc;
+
+ LPROCFS_ENTRY_AND_CHECK(dp);
+ rc = seq_open(file, &sops);
+ if (rc) {
+ LPROCFS_EXIT();
+ return rc;
+ }
+
+ seqf = file->private_data;
+ seqf->private = dp->data;
+ return 0;
+}
+
+/* See also lprocfs_rd_timeouts */
+static int ptlrpc_lprocfs_rd_timeouts(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ struct ptlrpc_service *svc = data;
+ struct ptlrpc_service_part *svcpt;
+ struct dhms ts;
+ time_t worstt;
+ unsigned int cur;
+ unsigned int worst;
+ int nob = 0;
+ int rc = 0;
+ int i;
+
+ if (AT_OFF) {
+ rc += snprintf(page + rc, count - rc,
+ "adaptive timeouts off, using obd_timeout %u\n",
+ obd_timeout);
+ return rc;
+ }
+
+ ptlrpc_service_for_each_part(svcpt, i, svc) {
+ cur = at_get(&svcpt->scp_at_estimate);
+ worst = svcpt->scp_at_estimate.at_worst_ever;
+ worstt = svcpt->scp_at_estimate.at_worst_time;
+ s2dhms(&ts, cfs_time_current_sec() - worstt);
+
+ nob = snprintf(page, count,
+ "%10s : cur %3u worst %3u (at %ld, "
+ DHMS_FMT" ago) ", "service",
+ cur, worst, worstt, DHMS_VARS(&ts));
+
+ nob = lprocfs_at_hist_helper(page, count, nob,
+ &svcpt->scp_at_estimate);
+ rc += nob;
+ page += nob;
+ count -= nob;
+
+ /*
+ * NB: for lustre proc read, the read count must be less
+ * than PAGE_SIZE, please see details in lprocfs_fops_read.
+ * It's unlikely that we exceed PAGE_SIZE at here because
+ * it means the service has more than 50 partitions.
+ */
+ if (count <= 0) {
+ CWARN("Can't fit AT information of %s in one page, "
+ "please contact with developer to fix this.\n",
+ svc->srv_name);
+ break;
+ }
+ }
+
+ return rc;
+}
+
+static int ptlrpc_lprocfs_rd_hp_ratio(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ struct ptlrpc_service *svc = data;
+ int rc = snprintf(page, count, "%d", svc->srv_hpreq_ratio);
+ return rc;
+}
+
+static int ptlrpc_lprocfs_wr_hp_ratio(struct file *file, const char *buffer,
+ unsigned long count, void *data)
+{
+ struct ptlrpc_service *svc = data;
+ int rc;
+ int val;
+
+ rc = lprocfs_write_helper(buffer, count, &val);
+ if (rc < 0)
+ return rc;
+
+ if (val < 0)
+ return -ERANGE;
+
+ spin_lock(&svc->srv_lock);
+ svc->srv_hpreq_ratio = val;
+ spin_unlock(&svc->srv_lock);
+
+ return count;
+}
+
+void ptlrpc_lprocfs_register_service(struct proc_dir_entry *entry,
+ struct ptlrpc_service *svc)
+{
+ struct lprocfs_vars lproc_vars[] = {
+ {.name = "high_priority_ratio",
+ .read_fptr = ptlrpc_lprocfs_rd_hp_ratio,
+ .write_fptr = ptlrpc_lprocfs_wr_hp_ratio,
+ .data = svc},
+ {.name = "req_buffer_history_len",
+ .read_fptr = ptlrpc_lprocfs_read_req_history_len,
+ .data = svc},
+ {.name = "req_buffer_history_max",
+ .write_fptr = ptlrpc_lprocfs_write_req_history_max,
+ .read_fptr = ptlrpc_lprocfs_read_req_history_max,
+ .data = svc},
+ {.name = "threads_min",
+ .read_fptr = ptlrpc_lprocfs_rd_threads_min,
+ .write_fptr = ptlrpc_lprocfs_wr_threads_min,
+ .data = svc},
+ {.name = "threads_max",
+ .read_fptr = ptlrpc_lprocfs_rd_threads_max,
+ .write_fptr = ptlrpc_lprocfs_wr_threads_max,
+ .data = svc},
+ {.name = "threads_started",
+ .read_fptr = ptlrpc_lprocfs_rd_threads_started,
+ .data = svc},
+ {.name = "timeouts",
+ .read_fptr = ptlrpc_lprocfs_rd_timeouts,
+ .data = svc},
+ {.name = "nrs_policies",
+ .read_fptr = ptlrpc_lprocfs_rd_nrs,
+ .write_fptr = ptlrpc_lprocfs_wr_nrs,
+ .data = svc},
+ {NULL}
+ };
+ static struct file_operations req_history_fops = {
+ .owner = THIS_MODULE,
+ .open = ptlrpc_lprocfs_svc_req_history_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = lprocfs_seq_release,
+ };
+
+ int rc;
+
+ ptlrpc_lprocfs_register(entry, svc->srv_name,
+ "stats", &svc->srv_procroot,
+ &svc->srv_stats);
+
+ if (svc->srv_procroot == NULL)
+ return;
+
+ lprocfs_add_vars(svc->srv_procroot, lproc_vars, NULL);
+
+ rc = lprocfs_seq_create(svc->srv_procroot, "req_history",
+ 0400, &req_history_fops, svc);
+ if (rc)
+ CWARN("Error adding the req_history file\n");
+}
+
+void ptlrpc_lprocfs_register_obd(struct obd_device *obddev)
+{
+ ptlrpc_lprocfs_register(obddev->obd_proc_entry, NULL, "stats",
+ &obddev->obd_svc_procroot,
+ &obddev->obd_svc_stats);
+}
+EXPORT_SYMBOL(ptlrpc_lprocfs_register_obd);
+
+void ptlrpc_lprocfs_rpc_sent(struct ptlrpc_request *req, long amount)
+{
+ struct lprocfs_stats *svc_stats;
+ __u32 op = lustre_msg_get_opc(req->rq_reqmsg);
+ int opc = opcode_offset(op);
+
+ svc_stats = req->rq_import->imp_obd->obd_svc_stats;
+ if (svc_stats == NULL || opc <= 0)
+ return;
+ LASSERT(opc < LUSTRE_MAX_OPCODES);
+ if (!(op == LDLM_ENQUEUE || op == MDS_REINT))
+ lprocfs_counter_add(svc_stats, opc + EXTRA_MAX_OPCODES, amount);
+}
+
+void ptlrpc_lprocfs_brw(struct ptlrpc_request *req, int bytes)
+{
+ struct lprocfs_stats *svc_stats;
+ int idx;
+
+ if (!req->rq_import)
+ return;
+ svc_stats = req->rq_import->imp_obd->obd_svc_stats;
+ if (!svc_stats)
+ return;
+ idx = lustre_msg_get_opc(req->rq_reqmsg);
+ switch (idx) {
+ case OST_READ:
+ idx = BRW_READ_BYTES + PTLRPC_LAST_CNTR;
+ break;
+ case OST_WRITE:
+ idx = BRW_WRITE_BYTES + PTLRPC_LAST_CNTR;
+ break;
+ default:
+ LASSERTF(0, "unsupported opcode %u\n", idx);
+ break;
+ }
+
+ lprocfs_counter_add(svc_stats, idx, bytes);
+}
+
+EXPORT_SYMBOL(ptlrpc_lprocfs_brw);
+
+void ptlrpc_lprocfs_unregister_service(struct ptlrpc_service *svc)
+{
+ if (svc->srv_procroot != NULL)
+ lprocfs_remove(&svc->srv_procroot);
+
+ if (svc->srv_stats)
+ lprocfs_free_stats(&svc->srv_stats);
+}
+
+void ptlrpc_lprocfs_unregister_obd(struct obd_device *obd)
+{
+ if (obd->obd_svc_procroot)
+ lprocfs_remove(&obd->obd_svc_procroot);
+
+ if (obd->obd_svc_stats)
+ lprocfs_free_stats(&obd->obd_svc_stats);
+}
+EXPORT_SYMBOL(ptlrpc_lprocfs_unregister_obd);
+
+
+#define BUFLEN (UUID_MAX + 5)
+
+int lprocfs_wr_evict_client(struct file *file, const char *buffer,
+ unsigned long count, void *data)
+{
+ struct obd_device *obd = data;
+ char *kbuf;
+ char *tmpbuf;
+
+ OBD_ALLOC(kbuf, BUFLEN);
+ if (kbuf == NULL)
+ return -ENOMEM;
+
+ /*
+ * OBD_ALLOC() will zero kbuf, but we only copy BUFLEN - 1
+ * bytes into kbuf, to ensure that the string is NUL-terminated.
+ * UUID_MAX should include a trailing NUL already.
+ */
+ if (cfs_copy_from_user(kbuf, buffer,
+ min_t(unsigned long, BUFLEN - 1, count))) {
+ count = -EFAULT;
+ goto out;
+ }
+ tmpbuf = cfs_firststr(kbuf, min_t(unsigned long, BUFLEN - 1, count));
+ /* Kludge code(deadlock situation): the lprocfs lock has been held
+ * since the client is evicted by writting client's
+ * uuid/nid to procfs "evict_client" entry. However,
+ * obd_export_evict_by_uuid() will call lprocfs_remove() to destroy
+ * the proc entries under the being destroyed export{}, so I have
+ * to drop the lock at first here.
+ * - jay, jxiong@clusterfs.com */
+ LPROCFS_EXIT();
+ class_incref(obd, __FUNCTION__, cfs_current());
+
+ if (strncmp(tmpbuf, "nid:", 4) == 0)
+ obd_export_evict_by_nid(obd, tmpbuf + 4);
+ else if (strncmp(tmpbuf, "uuid:", 5) == 0)
+ obd_export_evict_by_uuid(obd, tmpbuf + 5);
+ else
+ obd_export_evict_by_uuid(obd, tmpbuf);
+
+ class_decref(obd, __FUNCTION__, cfs_current());
+ LPROCFS_ENTRY();
+
+out:
+ OBD_FREE(kbuf, BUFLEN);
+ return count;
+}
+EXPORT_SYMBOL(lprocfs_wr_evict_client);
+
+#undef BUFLEN
+
+int lprocfs_wr_ping(struct file *file, const char *buffer,
+ unsigned long count, void *data)
+{
+ struct obd_device *obd = data;
+ struct ptlrpc_request *req;
+ int rc;
+ ENTRY;
+
+ LPROCFS_CLIMP_CHECK(obd);
+ req = ptlrpc_prep_ping(obd->u.cli.cl_import);
+ LPROCFS_CLIMP_EXIT(obd);
+ if (req == NULL)
+ RETURN(-ENOMEM);
+
+ req->rq_send_state = LUSTRE_IMP_FULL;
+
+ rc = ptlrpc_queue_wait(req);
+
+ ptlrpc_req_finished(req);
+ if (rc >= 0)
+ RETURN(count);
+ RETURN(rc);
+}
+EXPORT_SYMBOL(lprocfs_wr_ping);
+
+/* Write the connection UUID to this file to attempt to connect to that node.
+ * The connection UUID is a node's primary NID. For example,
+ * "echo connection=192.168.0.1@tcp0::instance > .../import".
+ */
+int lprocfs_wr_import(struct file *file, const char *buffer,
+ unsigned long count, void *data)
+{
+ struct obd_device *obd = data;
+ struct obd_import *imp = obd->u.cli.cl_import;
+ char *kbuf = NULL;
+ char *uuid;
+ char *ptr;
+ int do_reconn = 1;
+ const char prefix[] = "connection=";
+ const int prefix_len = sizeof(prefix) - 1;
+
+ if (count > CFS_PAGE_SIZE - 1 || count <= prefix_len)
+ return -EINVAL;
+
+ OBD_ALLOC(kbuf, count + 1);
+ if (kbuf == NULL)
+ return -ENOMEM;
+
+ if (cfs_copy_from_user(kbuf, buffer, count))
+ GOTO(out, count = -EFAULT);
+
+ kbuf[count] = 0;
+
+ /* only support connection=uuid::instance now */
+ if (strncmp(prefix, kbuf, prefix_len) != 0)
+ GOTO(out, count = -EINVAL);
+
+ uuid = kbuf + prefix_len;
+ ptr = strstr(uuid, "::");
+ if (ptr) {
+ __u32 inst;
+ char *endptr;
+
+ *ptr = 0;
+ do_reconn = 0;
+ ptr += strlen("::");
+ inst = simple_strtol(ptr, &endptr, 10);
+ if (*endptr) {
+ CERROR("config: wrong instance # %s\n", ptr);
+ } else if (inst != imp->imp_connect_data.ocd_instance) {
+ CDEBUG(D_INFO, "IR: %s is connecting to an obsoleted "
+ "target(%u/%u), reconnecting...\n",
+ imp->imp_obd->obd_name,
+ imp->imp_connect_data.ocd_instance, inst);
+ do_reconn = 1;
+ } else {
+ CDEBUG(D_INFO, "IR: %s has already been connecting to "
+ "new target(%u)\n",
+ imp->imp_obd->obd_name, inst);
+ }
+ }
+
+ if (do_reconn)
+ ptlrpc_recover_import(imp, uuid, 1);
+
+out:
+ OBD_FREE(kbuf, count + 1);
+ return count;
+}
+EXPORT_SYMBOL(lprocfs_wr_import);
+
+int lprocfs_rd_pinger_recov(char *page, char **start, off_t off,
+ int count, int *eof, void *data)
+{
+ struct obd_device *obd = data;
+ struct obd_import *imp = obd->u.cli.cl_import;
+ int rc;
+
+ LPROCFS_CLIMP_CHECK(obd);
+ rc = snprintf(page, count, "%d\n", !imp->imp_no_pinger_recover);
+ LPROCFS_CLIMP_EXIT(obd);
+
+ return rc;
+}
+EXPORT_SYMBOL(lprocfs_rd_pinger_recov);
+
+int lprocfs_wr_pinger_recov(struct file *file, const char *buffer,
+ unsigned long count, void *data)
+{
+ struct obd_device *obd = data;
+ struct client_obd *cli = &obd->u.cli;
+ struct obd_import *imp = cli->cl_import;
+ int rc, val;
+
+ rc = lprocfs_write_helper(buffer, count, &val);
+ if (rc < 0)
+ return rc;
+
+ if (val != 0 && val != 1)
+ return -ERANGE;
+
+ LPROCFS_CLIMP_CHECK(obd);
+ spin_lock(&imp->imp_lock);
+ imp->imp_no_pinger_recover = !val;
+ spin_unlock(&imp->imp_lock);
+ LPROCFS_CLIMP_EXIT(obd);
+
+ return count;
+
+}
+EXPORT_SYMBOL(lprocfs_wr_pinger_recov);
+
+#endif /* LPROCFS */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff