/* * GPL HEADER START * * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * 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. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License version 2 for more details (a copy is included * in the LICENSE file that accompanied this code). * * You should have received a copy of the GNU General Public License * version 2 along with this program; If not, see * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf * * 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, Whamcloud, Inc. */ /* * This file is part of Lustre, http://www.lustre.org/ * Lustre is a trademark of Sun Microsystems, Inc. */ #define DEBUG_SUBSYSTEM S_CLASS #ifndef __KERNEL__ # include #endif #include #include #include #include #include #include #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" }, { 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" }, { 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" } }; 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" }, }; const char *ll_opcode2str(__u32 opcode) { /* 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; 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; *eof = 1; return snprintf(page, count, "%d\n", svc->srv_n_history_rqbds); } 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; *eof = 1; return snprintf(page, count, "%d\n", svc->srv_max_history_rqbds); } 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 = 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; cfs_spin_lock(&svc->srv_lock); svc->srv_max_history_rqbds = val; cfs_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_threads_min); } 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 < 2) return -ERANGE; if (val > svc->srv_threads_max) return -ERANGE; cfs_spin_lock(&svc->srv_lock); svc->srv_threads_min = val; cfs_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; return snprintf(page, count, "%d\n", svc->srv_threads_running); } 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_threads_max); } 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 < 2) return -ERANGE; if (val < svc->srv_threads_min) return -ERANGE; cfs_spin_lock(&svc->srv_lock); svc->srv_threads_max = val; cfs_spin_unlock(&svc->srv_lock); return count; } struct ptlrpc_srh_iterator { __u64 srhi_seq; struct ptlrpc_request *srhi_req; }; int ptlrpc_lprocfs_svc_req_history_seek(struct ptlrpc_service *svc, struct ptlrpc_srh_iterator *srhi, __u64 seq) { cfs_list_t *e; struct ptlrpc_request *req; if (srhi->srhi_req != NULL && srhi->srhi_seq > svc->srv_request_max_cull_seq && 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 */ LASSERT (srhi->srhi_seq == srhi->srhi_req->rq_history_seq); LASSERT (!cfs_list_empty(&svc->srv_request_history)); e = &srhi->srhi_req->rq_history_list; } else { /* search from start */ e = svc->srv_request_history.next; } while (e != &svc->srv_request_history) { 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; } static void * ptlrpc_lprocfs_svc_req_history_start(struct seq_file *s, loff_t *pos) { struct ptlrpc_service *svc = s->private; struct ptlrpc_srh_iterator *srhi; int rc; OBD_ALLOC(srhi, sizeof(*srhi)); if (srhi == NULL) return NULL; srhi->srhi_seq = 0; srhi->srhi_req = NULL; cfs_spin_lock(&svc->srv_lock); rc = ptlrpc_lprocfs_svc_req_history_seek(svc, srhi, *pos); cfs_spin_unlock(&svc->srv_lock); if (rc == 0) { *pos = srhi->srhi_seq; 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; int rc; cfs_spin_lock(&svc->srv_lock); rc = ptlrpc_lprocfs_svc_req_history_seek(svc, srhi, *pos + 1); cfs_spin_unlock(&svc->srv_lock); if (rc != 0) { OBD_FREE(srhi, sizeof(*srhi)); return NULL; } *pos = srhi->srhi_seq; return srhi; } /* common ost/mdt srv_req_printfn */ 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, "\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_request *req; int rc; cfs_spin_lock(&svc->srv_lock); rc = ptlrpc_lprocfs_svc_req_history_seek(svc, 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_req_printfn == NULL) seq_printf(s, "\n"); else svc->srv_req_printfn(s, srhi->srhi_req); } cfs_spin_unlock(&svc->srv_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; unsigned int cur, worst; time_t worstt; struct dhms ts; int rc = 0; *eof = 1; cur = at_get(&svc->srv_at_estimate); worst = svc->srv_at_estimate.at_worst_ever; worstt = svc->srv_at_estimate.at_worst_time; s2dhms(&ts, cfs_time_current_sec() - worstt); if (AT_OFF) rc += snprintf(page + rc, count - rc, "adaptive timeouts off, using obd_timeout %u\n", obd_timeout); rc += snprintf(page + rc, count - rc, "%10s : cur %3u worst %3u (at %ld, "DHMS_FMT" ago) ", "service", cur, worst, worstt, DHMS_VARS(&ts)); rc = lprocfs_at_hist_helper(page, count, rc, &svc->srv_at_estimate); 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, val; rc = lprocfs_write_helper(buffer, count, &val); if (rc < 0) return rc; if (val < 0) return -ERANGE; cfs_spin_lock(&svc->srv_lock); svc->srv_hpreq_ratio = val; cfs_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}, {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 */ class_incref(obd, __FUNCTION__, cfs_current()); LPROCFS_EXIT(); 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); LPROCFS_ENTRY(); class_decref(obd, __FUNCTION__, cfs_current()); 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); cfs_spin_lock(&imp->imp_lock); imp->imp_no_pinger_recover = !val; cfs_spin_unlock(&imp->imp_lock); LPROCFS_CLIMP_EXIT(obd); return count; } EXPORT_SYMBOL(lprocfs_wr_pinger_recov); #endif /* LPROCFS */