X-Git-Url: https://git.whamcloud.com/?a=blobdiff_plain;f=lustre%2Flmv%2Flproc_lmv.c;h=1f8b5a611914033c236d24f435ad9218df6ed36d;hb=6ac2f14f0f622863c330b8b96da9373bad1abeb5;hp=9b1615a4ba49bdd8a7ebd792931f64f01bb209b1;hpb=d2d56f38da01001c92a09afc6b52b5acbd9bc13c;p=fs%2Flustre-release.git diff --git a/lustre/lmv/lproc_lmv.c b/lustre/lmv/lproc_lmv.c index 9b1615a..1f8b5a6 100644 --- a/lustre/lmv/lproc_lmv.c +++ b/lustre/lmv/lproc_lmv.c @@ -1,82 +1,162 @@ -/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*- - * vim:expandtab:shiftwidth=8:tabstop=8: +/* + * GPL HEADER START * - * Copyright (C) 2002, 2003 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) 2004, 2010, Oracle and/or its affiliates. All rights reserved. + * Use is subject to license terms. + * + * Copyright (c) 2012, 2014, 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 #include -#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,5,0)) #include -#endif #include #include -#ifndef LPROCFS +#include "lmv_internal.h" + +#ifndef CONFIG_PROC_FS static struct lprocfs_vars lprocfs_module_vars[] = { {0} }; static struct lprocfs_vars lprocfs_obd_vars[] = { {0} }; #else -static int lmv_rd_numobd(char *page, char **start, off_t off, int count, - int *eof, void *data) +static int lmv_numobd_seq_show(struct seq_file *m, void *v) { - struct obd_device *dev = (struct obd_device*)data; - struct lmv_desc *desc; + struct obd_device *dev = (struct obd_device *)m->private; + struct lmv_desc *desc; LASSERT(dev != NULL); desc = &dev->u.lmv.desc; - *eof = 1; - return snprintf(page, count, "%u\n", desc->ld_tgt_count); + return seq_printf(m, "%u\n", desc->ld_tgt_count); +} +LPROC_SEQ_FOPS_RO(lmv_numobd); + +static const char *placement_name[] = { + [PLACEMENT_CHAR_POLICY] = "CHAR", + [PLACEMENT_NID_POLICY] = "NID", + [PLACEMENT_INVAL_POLICY] = "INVAL" +}; + +static placement_policy_t placement_name2policy(char *name, int len) +{ + int i; + for (i = 0; i < PLACEMENT_MAX_POLICY; i++) { + if (!strncmp(placement_name[i], name, len)) + return i; + } + return PLACEMENT_INVAL_POLICY; } -static int lmv_rd_activeobd(char *page, char **start, off_t off, int count, - int *eof, void *data) +static const char *placement_policy2name(placement_policy_t placement) { - struct obd_device* dev = (struct obd_device*)data; - struct lmv_desc *desc; + LASSERT(placement < PLACEMENT_MAX_POLICY); + return placement_name[placement]; +} + +static int lmv_placement_seq_show(struct seq_file *m, void *v) +{ + struct obd_device *dev = (struct obd_device *)m->private; + struct lmv_obd *lmv; LASSERT(dev != NULL); - desc = &dev->u.lmv.desc; - *eof = 1; - return snprintf(page, count, "%u\n", desc->ld_active_tgt_count); + lmv = &dev->u.lmv; + return seq_printf(m, "%s\n", placement_policy2name(lmv->lmv_placement)); } -static int lmv_rd_desc_uuid(char *page, char **start, off_t off, int count, - int *eof, void *data) +#define MAX_POLICY_STRING_SIZE 64 + +static ssize_t lmv_placement_seq_write(struct file *file, + const char __user *buffer, + size_t count, loff_t *off) { - struct obd_device *dev = (struct obd_device*) data; - struct lmv_obd *lmv; + struct obd_device *dev = ((struct seq_file *)file->private_data)->private; + char dummy[MAX_POLICY_STRING_SIZE + 1]; + int len = count; + placement_policy_t policy; + struct lmv_obd *lmv; + + if (copy_from_user(dummy, buffer, MAX_POLICY_STRING_SIZE)) + return -EFAULT; LASSERT(dev != NULL); lmv = &dev->u.lmv; - *eof = 1; - return snprintf(page, count, "%s\n", lmv->desc.ld_uuid.uuid); + + if (len > MAX_POLICY_STRING_SIZE) + len = MAX_POLICY_STRING_SIZE; + + if (dummy[len - 1] == '\n') + len--; + dummy[len] = '\0'; + + policy = placement_name2policy(dummy, len); + if (policy != PLACEMENT_INVAL_POLICY) { + spin_lock(&lmv->lmv_lock); + lmv->lmv_placement = policy; + spin_unlock(&lmv->lmv_lock); + } else { + CERROR("Invalid placement policy \"%s\"!\n", dummy); + return -EINVAL; + } + return count; } +LPROC_SEQ_FOPS(lmv_placement); -static void *lmv_tgt_seq_start(struct seq_file *p, loff_t *pos) +static int lmv_activeobd_seq_show(struct seq_file *m, void *v) { - struct obd_device *dev = p->private; - struct lmv_obd *lmv = &dev->u.lmv; + struct obd_device *dev = (struct obd_device *)m->private; + struct lmv_desc *desc; + + LASSERT(dev != NULL); + desc = &dev->u.lmv.desc; + return seq_printf(m, "%u\n", desc->ld_active_tgt_count); +} +LPROC_SEQ_FOPS_RO(lmv_activeobd); - return (*pos >= lmv->desc.ld_tgt_count) ? NULL : &(lmv->tgts[*pos]); +static int lmv_desc_uuid_seq_show(struct seq_file *m, void *v) +{ + struct obd_device *dev = (struct obd_device*)m->private; + struct lmv_obd *lmv; + + LASSERT(dev != NULL); + lmv = &dev->u.lmv; + return seq_printf(m, "%s\n", lmv->desc.ld_uuid.uuid); +} +LPROC_SEQ_FOPS_RO(lmv_desc_uuid); +static void *lmv_tgt_seq_start(struct seq_file *p, loff_t *pos) +{ + struct obd_device *dev = p->private; + struct lmv_obd *lmv = &dev->u.lmv; + return (*pos >= lmv->desc.ld_tgt_count) ? NULL : lmv->tgts[*pos]; } static void lmv_tgt_seq_stop(struct seq_file *p, void *v) @@ -86,66 +166,64 @@ static void lmv_tgt_seq_stop(struct seq_file *p, void *v) static void *lmv_tgt_seq_next(struct seq_file *p, void *v, loff_t *pos) { - struct obd_device *dev = p->private; - struct lmv_obd *lmv = &dev->u.lmv; - - ++*pos; - return (*pos >=lmv->desc.ld_tgt_count) ? NULL : &(lmv->tgts[*pos]); + struct obd_device *dev = p->private; + struct lmv_obd *lmv = &dev->u.lmv; + ++*pos; + return (*pos >= lmv->desc.ld_tgt_count) ? NULL : lmv->tgts[*pos]; } static int lmv_tgt_seq_show(struct seq_file *p, void *v) { - struct lmv_tgt_desc *tgt = v; - struct obd_device *dev = p->private; - struct lmv_obd *lmv = &dev->u.lmv; - int idx = tgt - &(lmv->tgts[0]); - - return seq_printf(p, "%d: %s %sACTIVE\n", idx, tgt->ltd_uuid.uuid, - tgt->ltd_active ? "" : "IN"); + struct lmv_tgt_desc *tgt = v; + + if (tgt == NULL) + return 0; + return seq_printf(p, "%u: %s %sACTIVE\n", tgt->ltd_idx, + tgt->ltd_uuid.uuid, tgt->ltd_active ? "" : "IN"); } -struct seq_operations lmv_tgt_sops = { - .start = lmv_tgt_seq_start, - .stop = lmv_tgt_seq_stop, - .next = lmv_tgt_seq_next, - .show = lmv_tgt_seq_show, +static const struct seq_operations lmv_tgt_sops = { + .start = lmv_tgt_seq_start, + .stop = lmv_tgt_seq_stop, + .next = lmv_tgt_seq_next, + .show = lmv_tgt_seq_show, }; static int lmv_target_seq_open(struct inode *inode, struct file *file) { - struct proc_dir_entry *dp = PDE(inode); - struct seq_file *seq; - int rc = seq_open(file, &lmv_tgt_sops); + struct seq_file *seq; + int rc; + rc = seq_open(file, &lmv_tgt_sops); if (rc) return rc; - seq = file->private_data; - seq->private = dp->data; - - return 0; + seq = file->private_data; + seq->private = PDE_DATA(inode); + return 0; } -struct lprocfs_vars lprocfs_obd_vars[] = { - { "numobd", lmv_rd_numobd, 0, 0 }, - { "activeobd", lmv_rd_activeobd, 0, 0 }, - { "uuid", lprocfs_rd_uuid, 0, 0 }, - { "desc_uuid", lmv_rd_desc_uuid, 0, 0 }, - { 0 } -}; - -static struct lprocfs_vars lprocfs_module_vars[] = { - { "num_refs", lprocfs_rd_numrefs, 0, 0 }, - { 0 } +LPROC_SEQ_FOPS_RO_TYPE(lmv, uuid); + +struct lprocfs_vars lprocfs_lmv_obd_vars[] = { + { .name = "numobd", + .fops = &lmv_numobd_fops }, + { .name = "placement", + .fops = &lmv_placement_fops }, + { .name = "activeobd", + .fops = &lmv_activeobd_fops }, + { .name = "uuid", + .fops = &lmv_uuid_fops }, + { .name = "desc_uuid", + .fops = &lmv_desc_uuid_fops }, + { NULL } }; struct file_operations lmv_proc_target_fops = { - .owner = THIS_MODULE, - .open = lmv_target_seq_open, - .read = seq_read, - .llseek = seq_lseek, - .release = seq_release, + .owner = THIS_MODULE, + .open = lmv_target_seq_open, + .read = seq_read, + .llseek = seq_lseek, + .release = seq_release, }; - -#endif /* LPROCFS */ -LPROCFS_INIT_VARS(lmv, lprocfs_module_vars, lprocfs_obd_vars) +#endif /* CONFIG_PROC_FS */