4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2012, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #define DEBUG_SUBSYSTEM S_CLASS
39 #include <linux/seq_file.h>
40 #include <linux/statfs.h>
41 #include "../include/lprocfs_status.h"
42 #include "../include/obd_class.h"
43 #include "lmv_internal.h"
45 static ssize_t numobd_show(struct kobject *kobj, struct attribute *attr,
48 struct obd_device *dev = container_of(kobj, struct obd_device,
50 struct lmv_desc *desc;
52 desc = &dev->u.lmv.desc;
53 return sprintf(buf, "%u\n", desc->ld_tgt_count);
55 LUSTRE_RO_ATTR(numobd);
57 static const char *placement_name[] = {
58 [PLACEMENT_CHAR_POLICY] = "CHAR",
59 [PLACEMENT_NID_POLICY] = "NID",
60 [PLACEMENT_INVAL_POLICY] = "INVAL"
63 static enum placement_policy placement_name2policy(char *name, int len)
67 for (i = 0; i < PLACEMENT_MAX_POLICY; i++) {
68 if (!strncmp(placement_name[i], name, len))
71 return PLACEMENT_INVAL_POLICY;
74 static const char *placement_policy2name(enum placement_policy placement)
76 LASSERT(placement < PLACEMENT_MAX_POLICY);
77 return placement_name[placement];
80 static ssize_t placement_show(struct kobject *kobj, struct attribute *attr,
83 struct obd_device *dev = container_of(kobj, struct obd_device,
88 return sprintf(buf, "%s\n", placement_policy2name(lmv->lmv_placement));
91 #define MAX_POLICY_STRING_SIZE 64
93 static ssize_t placement_store(struct kobject *kobj, struct attribute *attr,
97 struct obd_device *dev = container_of(kobj, struct obd_device,
99 char dummy[MAX_POLICY_STRING_SIZE + 1];
100 enum placement_policy policy;
101 struct lmv_obd *lmv = &dev->u.lmv;
103 memcpy(dummy, buffer, MAX_POLICY_STRING_SIZE);
105 if (count > MAX_POLICY_STRING_SIZE)
106 count = MAX_POLICY_STRING_SIZE;
108 if (dummy[count - 1] == '\n')
112 policy = placement_name2policy(dummy, count);
113 if (policy != PLACEMENT_INVAL_POLICY) {
114 spin_lock(&lmv->lmv_lock);
115 lmv->lmv_placement = policy;
116 spin_unlock(&lmv->lmv_lock);
122 LUSTRE_RW_ATTR(placement);
124 static ssize_t activeobd_show(struct kobject *kobj, struct attribute *attr,
127 struct obd_device *dev = container_of(kobj, struct obd_device,
129 struct lmv_desc *desc;
131 desc = &dev->u.lmv.desc;
132 return sprintf(buf, "%u\n", desc->ld_active_tgt_count);
134 LUSTRE_RO_ATTR(activeobd);
136 static int lmv_desc_uuid_seq_show(struct seq_file *m, void *v)
138 struct obd_device *dev = (struct obd_device *)m->private;
141 LASSERT(dev != NULL);
143 seq_printf(m, "%s\n", lmv->desc.ld_uuid.uuid);
147 LPROC_SEQ_FOPS_RO(lmv_desc_uuid);
149 static void *lmv_tgt_seq_start(struct seq_file *p, loff_t *pos)
151 struct obd_device *dev = p->private;
152 struct lmv_obd *lmv = &dev->u.lmv;
154 return (*pos >= lmv->desc.ld_tgt_count) ? NULL : lmv->tgts[*pos];
157 static void lmv_tgt_seq_stop(struct seq_file *p, void *v)
162 static void *lmv_tgt_seq_next(struct seq_file *p, void *v, loff_t *pos)
164 struct obd_device *dev = p->private;
165 struct lmv_obd *lmv = &dev->u.lmv;
167 return (*pos >= lmv->desc.ld_tgt_count) ? NULL : lmv->tgts[*pos];
170 static int lmv_tgt_seq_show(struct seq_file *p, void *v)
172 struct lmv_tgt_desc *tgt = v;
176 seq_printf(p, "%d: %s %sACTIVE\n",
177 tgt->ltd_idx, tgt->ltd_uuid.uuid,
178 tgt->ltd_active ? "" : "IN");
182 static const struct seq_operations lmv_tgt_sops = {
183 .start = lmv_tgt_seq_start,
184 .stop = lmv_tgt_seq_stop,
185 .next = lmv_tgt_seq_next,
186 .show = lmv_tgt_seq_show,
189 static int lmv_target_seq_open(struct inode *inode, struct file *file)
191 struct seq_file *seq;
194 rc = seq_open(file, &lmv_tgt_sops);
198 seq = file->private_data;
199 seq->private = inode->i_private;
204 static struct lprocfs_vars lprocfs_lmv_obd_vars[] = {
205 { "desc_uuid", &lmv_desc_uuid_fops, NULL, 0 },
209 struct file_operations lmv_proc_target_fops = {
210 .owner = THIS_MODULE,
211 .open = lmv_target_seq_open,
214 .release = seq_release,
217 static struct attribute *lmv_attrs[] = {
218 &lustre_attr_activeobd.attr,
219 &lustre_attr_numobd.attr,
220 &lustre_attr_placement.attr,
224 static struct attribute_group lmv_attr_group = {
228 void lprocfs_lmv_init_vars(struct lprocfs_static_vars *lvars)
230 lvars->sysfs_vars = &lmv_attr_group;
231 lvars->obd_vars = lprocfs_lmv_obd_vars;