Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 | /*
* 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) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
* Copyright (c) 2012, 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 <linux/seq_file.h>
#include <asm/statfs.h>
#include <lprocfs_status.h>
#include <obd_class.h>
static int lmv_numobd_seq_show(struct seq_file *m, void *v)
{
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_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 const char *placement_policy2name(placement_policy_t placement)
{
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);
lmv = &dev->u.lmv;
return seq_printf(m, "%s\n", placement_policy2name(lmv->lmv_placement));
}
#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 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;
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 int lmv_activeobd_seq_show(struct seq_file *m, void *v)
{
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);
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)
{
return;
}
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];
}
static int lmv_tgt_seq_show(struct seq_file *p, void *v)
{
struct lmv_tgt_desc *tgt = v;
if (tgt == NULL)
return 0;
return seq_printf(p, "%d: %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 int lmv_target_seq_open(struct inode *inode, struct file *file)
{
struct seq_file *seq;
int rc;
rc = seq_open(file, &lmv_tgt_sops);
if (rc)
return rc;
seq = file->private_data;
seq->private = PDE_DATA(inode);
return 0;
}
LPROC_SEQ_FOPS_RO_TYPE(lmv, uuid);
struct lprocfs_vars lprocfs_lmv_obd_vars[] = {
{ "numobd", &lmv_numobd_fops, NULL, 0 },
{ "placement", &lmv_placement_fops, NULL, 0 },
{ "activeobd", &lmv_activeobd_fops, NULL, 0 },
{ "uuid", &lmv_uuid_fops, NULL, 0 },
{ "desc_uuid", &lmv_desc_uuid_fops, NULL, 0 },
{ NULL }
};
LPROC_SEQ_FOPS_RO_TYPE(lmv, numrefs);
static struct lprocfs_vars lprocfs_lmv_module_vars[] = {
{ "num_refs", &lmv_numrefs_fops, NULL, 0 },
{ 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,
};
void lprocfs_lmv_init_vars(struct lprocfs_static_vars *lvars)
{
lvars->module_vars = lprocfs_lmv_module_vars;
lvars->obd_vars = lprocfs_lmv_obd_vars;
}
|