X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;ds=sidebyside;f=lustre%2Fptlrpc%2Flproc_ptlrpc.c;h=b423fa3355b883a11eaf3a476aa612b354c787d8;hb=27443f4a9453a3956fb111252324f5b53e708f0b;hp=1b3532e2a61ca7ed5ba4005bfa404b43e9e9d6d8;hpb=93acd158c57c4c5d0fc751d46741231490c04707;p=fs%2Flustre-release.git diff --git a/lustre/ptlrpc/lproc_ptlrpc.c b/lustre/ptlrpc/lproc_ptlrpc.c index 1b3532e..b423fa3 100644 --- a/lustre/ptlrpc/lproc_ptlrpc.c +++ b/lustre/ptlrpc/lproc_ptlrpc.c @@ -3,39 +3,540 @@ * * Copyright (C) 2002 Cluster File Systems, Inc. * - * This file is part of Lustre, http://www.lustre.org. + * This file is part of the Lustre file system, http://www.lustre.org + * Lustre is a trademark of Cluster File Systems, Inc. * - * Lustre is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. + * You may have signed or agreed to another license before downloading + * this software. If so, you are bound by the terms and conditions + * of that agreement, and the following does not apply to you. See the + * LICENSE file included with this distribution for more information. * - * Lustre is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. + * If you did not agree to a different license, then this copy of Lustre + * is open source software; you can redistribute it and/or modify it + * under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. * - * You should have received a copy of the GNU General Public License - * along with Lustre; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * In either case, Lustre is distributed in the hope that it will be + * useful, but WITHOUT ANY WARRANTY; without even the implied warranty + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * license text for more details. * */ #define DEBUG_SUBSYSTEM S_CLASS -#include +#ifndef __KERNEL__ +# include +#endif -#ifndef LPROCFS -struct lprocfs_vars lprocfs_obd_vars[] = { {0} }; -struct lprocfs_vars lprocfs_module_vars[] = { {0} }; -#else -struct lprocfs_vars lprocfs_obd_vars[] = { - { "uuid", lprocfs_rd_uuid, 0, 0}, - { 0 } +#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, "ost_san_read" }, + { 15, "ost_san_write" }, + { OST_SYNC, "ost_sync" }, + { OST_SET_INFO, "ost_set_info" }, + { OST_QUOTACHECK, "ost_quotacheck" }, + { OST_QUOTACTL, "ost_quotactl" }, + { 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" }, + { 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" }, + { MGS_CONNECT, "mgs_connect" }, + { MGS_DISCONNECT, "mgs_disconnect" }, + { MGS_EXCEPTION, "mgs_exception" }, + { MGS_TARGET_REG, "mgs_target_reg" }, + { MGS_TARGET_DEL, "mgs_target_del" }, + { OBD_PING, "obd_ping" }, + { OBD_LOG_CANCEL, "llog_origin_handle_cancel" }, + { OBD_QC_CALLBACK, "obd_qc_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" }, + { FLD_QUERY, "fld_query" }, + { SEQ_QUERY, "seq_query" }, + { SEC_CTX_INIT, "sec_ctx_init" }, + { SEC_CTX_INIT_CONT,"sec_ctx_init_cont" }, + { SEC_CTX_FINI, "sec_ctx_fini" } }; -struct lprocfs_vars lprocfs_module_vars[] = { - { "num_refs", lprocfs_rd_numrefs, 0, 0}, - { 0 } +const char* ll_opcode2str(__u32 opcode) +{ + /* When one of the assertions below fail, chances are that: + * 1) A new opcode was added in lustre_idl.h, but was + * 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); + LASSERT(offset < LUSTRE_MAX_OPCODES); + LASSERT(ll_rpc_opcode_table[offset].opcode == opcode); + return ll_rpc_opcode_table[offset].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(PTLRPC_LAST_CNTR + LUSTRE_MAX_OPCODES); + 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_REQBUF_AVAIL_CNTR, + svc_counter_config, "reqbuf_avail", "bufs"); + for (i = 0; i < LUSTRE_MAX_OPCODES; i++) { + __u32 opcode = ll_rpc_opcode_table[i].opcode; + lprocfs_counter_init(svc_stats, PTLRPC_LAST_CNTR + i, + svc_counter_config, ll_opcode2str(opcode), + (i == OST_WRITE || i == OST_READ) ? + "bytes" : "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 > num_physpages/(2 * bufpages)) + return -ERANGE; + + spin_lock(&svc->srv_lock); + svc->srv_max_history_rqbds = val; + 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) +{ + struct list_head *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 (!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 = 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; + + spin_lock(&svc->srv_lock); + rc = ptlrpc_lprocfs_svc_req_history_seek(svc, srhi, *pos); + 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; + + spin_lock(&svc->srv_lock); + rc = ptlrpc_lprocfs_svc_req_history_seek(svc, srhi, *pos + 1); + spin_unlock(&svc->srv_lock); + + if (rc != 0) { + OBD_FREE(srhi, sizeof(*srhi)); + return NULL; + } + + *pos = srhi->srhi_seq; + return srhi; +} + +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; + + 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:"LPD64":%d:%s ", + req->rq_history_seq, libcfs_nid2str(req->rq_self), + libcfs_id2str(req->rq_peer), req->rq_xid, + req->rq_reqlen,ptlrpc_rqphase2str(req)); + + if (svc->srv_request_history_print_fn == NULL) + seq_printf(s, "\n"); + else + svc->srv_request_history_print_fn(s, srhi->srhi_req); + } + + 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; +} + +void ptlrpc_lprocfs_register_service(struct proc_dir_entry *entry, + struct ptlrpc_service *svc) +{ + struct lprocfs_vars lproc_vars[] = { + {.name = "req_buffer_history_len", + .write_fptr = NULL, + .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}, + {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, + }; + struct proc_dir_entry *req_history; + + 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); + + req_history = create_proc_entry("req_history", 0400, + svc->srv_procroot); + if (req_history != NULL) { + req_history->data = svc; + req_history->proc_fops = &req_history_fops; + } +} + +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) +{ + struct lprocfs_stats *svc_stats; + int opc = opcode_offset(lustre_msg_get_opc(req->rq_reqmsg)); + + svc_stats = req->rq_import->imp_obd->obd_svc_stats; + if (svc_stats == NULL || opc <= 0) + return; + LASSERT(opc < LUSTRE_MAX_OPCODES); + /* These two use the ptlrpc_lprocfs_brw below */ + if (!(opc == OST_WRITE || opc == OST_READ)) + lprocfs_counter_add(svc_stats, opc + PTLRPC_LAST_CNTR, 0); +} + +void ptlrpc_lprocfs_brw(struct ptlrpc_request *req, int opc, int bytes) +{ + struct lprocfs_stats *svc_stats; + svc_stats = req->rq_import->imp_obd->obd_svc_stats; + if (!svc_stats) + return; + lprocfs_counter_add(svc_stats, opc + PTLRPC_LAST_CNTR, 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); + + +int lprocfs_wr_evict_client(struct file *file, const char *buffer, + unsigned long count, void *data) +{ + struct obd_device *obd = data; + char tmpbuf[sizeof(struct obd_uuid)]; + + /* 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); + LPROCFS_EXIT(); + + sscanf(buffer, "%40s", tmpbuf); + obd_export_evict_by_uuid(obd, tmpbuf); + + LPROCFS_ENTRY(); + class_decref(obd); + + return count; +} +EXPORT_SYMBOL(lprocfs_wr_evict_client); + +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_req(obd->u.cli.cl_import, LUSTRE_OBD_VERSION, + OBD_PING, 1, NULL, NULL); + LPROCFS_CLIMP_EXIT(obd); + if (req == NULL) + RETURN(-ENOMEM); + + ptlrpc_req_set_repsize(req, 1, NULL); + req->rq_send_state = LUSTRE_IMP_FULL; + req->rq_no_resend = 1; + + rc = ptlrpc_queue_wait(req); + + ptlrpc_req_finished(req); + if (rc >= 0) + RETURN(count); + RETURN(rc); +} +EXPORT_SYMBOL(lprocfs_wr_ping); + #endif /* LPROCFS */ -LPROCFS_INIT_VARS(lprocfs_module_vars, lprocfs_obd_vars)