X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Fmds%2Flproc_mds.c;h=bd872fd9ee08fe0bc6f3c4d5b709309564d3cc49;hb=d1c8b37cc0b9808251300790ab9c91409fecfb96;hp=eab0cf7be8961f02c33c4910ec4b006dbeadbcee;hpb=93acd158c57c4c5d0fc751d46741231490c04707;p=fs%2Flustre-release.git diff --git a/lustre/mds/lproc_mds.c b/lustre/mds/lproc_mds.c index eab0cf7..bd872fd 100644 --- a/lustre/mds/lproc_mds.c +++ b/lustre/mds/lproc_mds.c @@ -1,95 +1,216 @@ -/* -*- 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) 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 -#include -#include -#include +#include +#include +#include +#include +#include +#include "mds_internal.h" + +#ifdef LPROCFS +static int lprocfs_mds_rd_evictostnids(char *page, char **start, off_t off, + int count, int *eof, void *data) +{ + struct obd_device* obd = (struct obd_device *)data; + + LASSERT(obd != NULL); + + return snprintf(page, count, "%d\n", obd->u.mds.mds_evict_ost_nids); +} + +static int lprocfs_mds_wr_evictostnids(struct file *file, const char *buffer, + unsigned long count, void *data) +{ + struct obd_device *obd = data; + int val, rc; + + rc = lprocfs_write_helper(buffer, count, &val); + if (rc) + return rc; -#ifndef LPROCFS -struct lprocfs_vars lprocfs_mds_obd_vars[] = { {0} }; -struct lprocfs_vars lprocfs_mds_module_vars[] = { {0} }; -struct lprocfs_vars lprocfs_mdt_obd_vars[] = { {0} }; -struct lprocfs_vars lprocfs_mdt_module_vars[] = { {0} }; + obd->u.mds.mds_evict_ost_nids = !!val; -#else + return count; +} -static inline -int lprocfs_mds_statfs(void *data, struct statfs *sfs) +#define BUFLEN (UUID_MAX + 4) + +static int lprocfs_mds_wr_evict_client(struct file *file, const char *buffer, + unsigned long count, void *data) { - struct obd_device* dev = (struct obd_device*) data; - struct mds_obd *mds = &dev->u.mds; - return vfs_statfs(mds->mds_sb, sfs); + struct ptlrpc_request_set *set; + struct obd_device *obd = data; + struct mds_obd *mds = &obd->u.mds; + char *kbuf; + char *tmpbuf; + int rc; + + 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)); + + if (strncmp(tmpbuf, "nid:", 4) != 0) { + count = lprocfs_wr_evict_client(file, buffer, count, data); + goto out; + } + + set = ptlrpc_prep_set(); + if (set == NULL) { + count = -ENOMEM; + goto out; + } + + if (obd->u.mds.mds_evict_ost_nids) { + rc = obd_set_info_async(NULL, mds->mds_lov_exp, + sizeof(KEY_EVICT_BY_NID), + KEY_EVICT_BY_NID, strlen(tmpbuf + 4) + 1, + tmpbuf + 4, set); + if (rc) + CERROR("Failed to evict nid %s from OSTs: rc %d\n", + tmpbuf + 4, rc); + + ptlrpc_check_set(NULL, set); + } + + /* See the comments in function lprocfs_wr_evict_client() + * in ptlrpc/lproc_ptlrpc.c for details. - jay */ + class_incref(obd, __FUNCTION__, cfs_current()); + LPROCFS_EXIT(); + + obd_export_evict_by_nid(obd, tmpbuf + 4); + + + rc = ptlrpc_set_wait(set); + if (rc) + CERROR("Failed to evict nid %s from OSTs: rc %d\n", tmpbuf + 4, + rc); + + LPROCFS_ENTRY(); + class_decref(obd, __FUNCTION__, cfs_current()); + + ptlrpc_set_destroy(set); +out: + OBD_FREE(kbuf, BUFLEN); + return count; } -DEFINE_LPROCFS_STATFS_FCT(rd_blksize, lprocfs_mds_statfs); -DEFINE_LPROCFS_STATFS_FCT(rd_kbytestotal, lprocfs_mds_statfs); -DEFINE_LPROCFS_STATFS_FCT(rd_kbytesfree, lprocfs_mds_statfs); -DEFINE_LPROCFS_STATFS_FCT(rd_filestotal, lprocfs_mds_statfs); -DEFINE_LPROCFS_STATFS_FCT(rd_filesfree, lprocfs_mds_statfs); -DEFINE_LPROCFS_STATFS_FCT(rd_filegroups, lprocfs_mds_statfs); +#undef BUFLEN -int rd_fstype(char *page, char **start, off_t off, int count, int *eof, - void *data) +static int lprocfs_wr_atime_diff(struct file *file, const char *buffer, + unsigned long count, void *data) { - struct obd_device *obd = (struct obd_device *)data; + struct obd_device *obd = data; + struct mds_obd *mds = &obd->u.mds; + char kernbuf[20], *end; + unsigned long diff = 0; + + if (count > (sizeof(kernbuf) - 1)) + return -EINVAL; + + if (cfs_copy_from_user(kernbuf, buffer, count)) + return -EFAULT; - return snprintf(page, count, "%s\n", obd->obd_fsops->fs_type); + kernbuf[count] = '\0'; + + diff = simple_strtoul(kernbuf, &end, 0); + if (kernbuf == end) + return -EINVAL; + + mds->mds_atime_diff = diff; + return count; } +static int lprocfs_rd_atime_diff(char *page, char **start, off_t off, + int count, int *eof, void *data) +{ + struct obd_device *obd = data; + struct mds_obd *mds = &obd->u.mds; + + *eof = 1; + return snprintf(page, count, "%lu\n", mds->mds_atime_diff); +} struct lprocfs_vars lprocfs_mds_obd_vars[] = { - { "uuid", lprocfs_rd_uuid, 0, 0 }, - { "blocksize", rd_blksize, 0, 0 }, - { "bytestotal", rd_kbytestotal, 0, 0 }, - { "kbytesfree", rd_kbytesfree, 0, 0 }, - { "fstype", rd_fstype, 0, 0 }, - { "filestotal", rd_filestotal, 0, 0 }, - { "filesfree", rd_filesfree, 0, 0 }, - { "filegroups", rd_filegroups, 0, 0 }, + { "uuid", lprocfs_rd_uuid, 0, 0 }, + { "blocksize", lprocfs_rd_blksize, 0, 0 }, + { "kbytestotal", lprocfs_rd_kbytestotal, 0, 0 }, + { "kbytesfree", lprocfs_rd_kbytesfree, 0, 0 }, + { "kbytesavail", lprocfs_rd_kbytesavail, 0, 0 }, + { "filestotal", lprocfs_rd_filestotal, 0, 0 }, + { "filesfree", lprocfs_rd_filesfree, 0, 0 }, + { "fstype", lprocfs_rd_fstype, 0, 0 }, + { "mntdev", lprocfs_obd_rd_mntdev, 0, 0 }, + { "recovery_status", lprocfs_obd_rd_recovery_status, 0, 0 }, + { "hash_stats", lprocfs_obd_rd_hash, 0, 0 }, + { "evict_client", 0, lprocfs_mds_wr_evict_client, 0 }, + { "evict_ost_nids", lprocfs_mds_rd_evictostnids, + lprocfs_mds_wr_evictostnids, 0 }, + { "num_exports", lprocfs_rd_num_exports, 0, 0 }, + { "atime_diff", lprocfs_rd_atime_diff, lprocfs_wr_atime_diff, 0 }, { 0 } }; struct lprocfs_vars lprocfs_mds_module_vars[] = { - { "num_refs", lprocfs_rd_numrefs, 0, 0 }, + { "num_refs", lprocfs_rd_numrefs, 0, 0 }, { 0 } }; struct lprocfs_vars lprocfs_mdt_obd_vars[] = { - { "uuid", lprocfs_rd_uuid, 0, 0 }, + { "uuid", lprocfs_rd_uuid, 0, 0 }, { 0 } }; -struct lprocfs_vars lprocfs_mdt_module_vars[] = { - { "num_refs", lprocfs_rd_numrefs, 0, 0 }, - { 0 } -}; +void lprocfs_mds_init_vars(struct lprocfs_static_vars *lvars) +{ + lvars->module_vars = lprocfs_mds_module_vars; + lvars->obd_vars = lprocfs_mds_obd_vars; +} #endif -struct lprocfs_static_vars lprocfs_array_vars[] = { {lprocfs_mds_module_vars, - lprocfs_mds_obd_vars}, - {lprocfs_mdt_module_vars, - lprocfs_mdt_obd_vars}}; - -LPROCFS_INIT_MULTI_VARS(lprocfs_array_vars, - (sizeof(lprocfs_array_vars)/ - sizeof(struct lprocfs_static_vars)))