lustre/lov/lproc_lov.c

   1 /*
   2  * GPL HEADER START
   3  *
   4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   5  *
   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.
   9  *
  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).
  15  *
  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
  19  *
  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
  22  * have any questions.
  23  *
  24  * GPL HEADER END
  25  */
  26 /*
  27  * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
  28  * Use is subject to license terms.
  29  *
  30  * Copyright (c) 2012, Intel Corporation.
  31  */
  32 /*
  33  * This file is part of Lustre, http://www.lustre.org/
  34  * Lustre is a trademark of Sun Microsystems, Inc.
  35  */
  36 #define DEBUG_SUBSYSTEM S_CLASS
  37
  38 #include <linux/version.h>
  39 #include <asm/statfs.h>
  40 #include <lprocfs_status.h>
  41 #include <obd_class.h>
  42 #include <lustre_param.h>
  43 #include "lov_internal.h"
  44
  45 #ifdef LPROCFS
  46 static int lov_stripesize_seq_show(struct seq_file *m, void *v)
  47 {
  48         struct obd_device *dev = (struct obd_device *)m->private;
  49         struct lov_desc *desc;
  50
  51         LASSERT(dev != NULL);
  52         desc = &dev->u.lov.desc;
  53
  54         return seq_printf(m, LPU64"\n", desc->ld_default_stripe_size);
  55 }
  56
  57 static ssize_t lov_stripesize_seq_write(struct file *file,
  58                                         const char __user *buffer,
  59                                         size_t count, loff_t *off)
  60 {
  61         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
  62         struct lov_desc *desc;
  63         __u64 val;
  64         int rc;
  65
  66         LASSERT(dev != NULL);
  67         desc = &dev->u.lov.desc;
  68         rc = lprocfs_write_u64_helper(buffer, count, &val);
  69         if (rc)
  70                 return rc;
  71
  72         lov_fix_desc_stripe_size(&val);
  73         desc->ld_default_stripe_size = val;
  74         return count;
  75 }
  76 LPROC_SEQ_FOPS(lov_stripesize);
  77
  78 static int lov_stripeoffset_seq_show(struct seq_file *m, void *v)
  79 {
  80         struct obd_device *dev = (struct obd_device *)m->private;
  81         struct lov_desc *desc;
  82
  83         LASSERT(dev != NULL);
  84         desc = &dev->u.lov.desc;
  85         return seq_printf(m, LPU64"\n", desc->ld_default_stripe_offset);
  86 }
  87
  88 static ssize_t lov_stripeoffset_seq_write(struct file *file,
  89                                           const char __user *buffer,
  90                                           size_t count, loff_t *off)
  91 {
  92         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
  93         struct lov_desc *desc;
  94         __u64 val;
  95         int rc;
  96
  97         LASSERT(dev != NULL);
  98         desc = &dev->u.lov.desc;
  99         rc = lprocfs_write_u64_helper(buffer, count, &val);
 100         if (rc)
 101                 return rc;
 102
 103         desc->ld_default_stripe_offset = val;
 104         return count;
 105 }
 106 LPROC_SEQ_FOPS(lov_stripeoffset);
 107
 108 static int lov_stripetype_seq_show(struct seq_file *m, void *v)
 109 {
 110         struct obd_device* dev = (struct obd_device*)m->private;
 111         struct lov_desc *desc;
 112
 113         LASSERT(dev != NULL);
 114         desc = &dev->u.lov.desc;
 115         return seq_printf(m, "%u\n", desc->ld_pattern);
 116 }
 117
 118 static ssize_t lov_stripetype_seq_write(struct file *file,
 119                                         const char __user *buffer,
 120                                         size_t count, loff_t *off)
 121 {
 122         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 123         struct lov_desc *desc;
 124         int val, rc;
 125
 126         LASSERT(dev != NULL);
 127         desc = &dev->u.lov.desc;
 128         rc = lprocfs_write_helper(buffer, count, &val);
 129         if (rc)
 130                 return rc;
 131
 132         lov_fix_desc_pattern(&val);
 133         desc->ld_pattern = val;
 134         return count;
 135 }
 136 LPROC_SEQ_FOPS(lov_stripetype);
 137
 138 static int lov_stripecount_seq_show(struct seq_file *m, void *v)
 139 {
 140         struct obd_device *dev = (struct obd_device *)m->private;
 141         struct lov_desc *desc;
 142
 143         LASSERT(dev != NULL);
 144         desc = &dev->u.lov.desc;
 145         return seq_printf(m, "%d\n",
 146                           (__s16)(desc->ld_default_stripe_count + 1) - 1);
 147 }
 148
 149 static ssize_t lov_stripecount_seq_write(struct file *file,
 150                                          const char __user *buffer,
 151                                          size_t count, loff_t *off)
 152 {
 153         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 154         struct lov_desc *desc;
 155         int val, rc;
 156
 157         LASSERT(dev != NULL);
 158         desc = &dev->u.lov.desc;
 159         rc = lprocfs_write_helper(buffer, count, &val);
 160         if (rc)
 161                 return rc;
 162
 163         lov_fix_desc_stripe_count(&val);
 164         desc->ld_default_stripe_count = val;
 165         return count;
 166 }
 167 LPROC_SEQ_FOPS(lov_stripecount);
 168
 169 static int lov_numobd_seq_show(struct seq_file *m, void *v)
 170 {
 171         struct obd_device *dev = (struct obd_device*)m->private;
 172         struct lov_desc *desc;
 173
 174         LASSERT(dev != NULL);
 175         desc = &dev->u.lov.desc;
 176         return seq_printf(m, "%u\n", desc->ld_tgt_count);
 177 }
 178 LPROC_SEQ_FOPS_RO(lov_numobd);
 179
 180 static int lov_activeobd_seq_show(struct seq_file *m, void *v)
 181 {
 182         struct obd_device* dev = (struct obd_device*)m->private;
 183         struct lov_desc *desc;
 184
 185         LASSERT(dev != NULL);
 186         desc = &dev->u.lov.desc;
 187         return seq_printf(m, "%u\n", desc->ld_active_tgt_count);
 188 }
 189 LPROC_SEQ_FOPS_RO(lov_activeobd);
 190
 191 static int lov_desc_uuid_seq_show(struct seq_file *m, void *v)
 192 {
 193         struct obd_device *dev = m->private;
 194         struct lov_obd *lov;
 195
 196         LASSERT(dev != NULL);
 197         lov = &dev->u.lov;
 198         return seq_printf(m, "%s\n", lov->desc.ld_uuid.uuid);
 199 }
 200 LPROC_SEQ_FOPS_RO(lov_desc_uuid);
 201
 202 static void *lov_tgt_seq_start(struct seq_file *p, loff_t *pos)
 203 {
 204         struct obd_device *dev = p->private;
 205         struct lov_obd *lov = &dev->u.lov;
 206
 207         while (*pos < lov->desc.ld_tgt_count) {
 208                 if (lov->lov_tgts[*pos])
 209                         return lov->lov_tgts[*pos];
 210                 ++*pos;
 211         }
 212         return NULL;
 213 }
 214
 215 static void lov_tgt_seq_stop(struct seq_file *p, void *v)
 216 {
 217 }
 218
 219 static void *lov_tgt_seq_next(struct seq_file *p, void *v, loff_t *pos)
 220 {
 221         struct obd_device *dev = p->private;
 222         struct lov_obd *lov = &dev->u.lov;
 223
 224         while (++*pos < lov->desc.ld_tgt_count) {
 225                 if (lov->lov_tgts[*pos])
 226                         return lov->lov_tgts[*pos];
 227         }
 228         return NULL;
 229 }
 230
 231 static int lov_tgt_seq_show(struct seq_file *p, void *v)
 232 {
 233         struct lov_tgt_desc *tgt = v;
 234         return seq_printf(p, "%d: %s %sACTIVE\n", tgt->ltd_index,
 235                           obd_uuid2str(&tgt->ltd_uuid),
 236                           tgt->ltd_active ? "" : "IN");
 237 }
 238
 239 struct seq_operations lov_tgt_sops = {
 240         .start = lov_tgt_seq_start,
 241         .stop = lov_tgt_seq_stop,
 242         .next = lov_tgt_seq_next,
 243         .show = lov_tgt_seq_show,
 244 };
 245
 246 static int lov_target_seq_open(struct inode *inode, struct file *file)
 247 {
 248         struct seq_file *seq;
 249         int rc;
 250
 251         LPROCFS_ENTRY_CHECK(PDE(inode));
 252         rc = seq_open(file, &lov_tgt_sops);
 253         if (rc)
 254                 return rc;
 255
 256         seq = file->private_data;
 257         seq->private = PDE_DATA(inode);
 258         return 0;
 259 }
 260
 261 LPROC_SEQ_FOPS_RO_TYPE(lov, uuid);
 262 LPROC_SEQ_FOPS_RO_TYPE(lov, filestotal);
 263 LPROC_SEQ_FOPS_RO_TYPE(lov, filesfree);
 264 LPROC_SEQ_FOPS_RO_TYPE(lov, blksize);
 265 LPROC_SEQ_FOPS_RO_TYPE(lov, kbytestotal);
 266 LPROC_SEQ_FOPS_RO_TYPE(lov, kbytesfree);
 267 LPROC_SEQ_FOPS_RO_TYPE(lov, kbytesavail);
 268
 269 struct lprocfs_vars lprocfs_lov_obd_vars[] = {
 270         { .name =       "uuid",
 271           .fops =       &lov_uuid_fops          },
 272         { .name =       "stripesize",
 273           .fops =       &lov_stripesize_fops    },
 274         { .name =       "stripeoffset",
 275           .fops =       &lov_stripeoffset_fops  },
 276         { .name =       "stripecount",
 277           .fops =       &lov_stripecount_fops   },
 278         { .name =       "stripetype",
 279           .fops =       &lov_stripetype_fops    },
 280         { .name =       "numobd",
 281           .fops =       &lov_numobd_fops        },
 282         { .name =       "activeobd",
 283           .fops =       &lov_activeobd_fops     },
 284         { .name =       "filestotal",
 285           .fops =       &lov_filestotal_fops    },
 286         { .name =       "filesfree",
 287           .fops =       &lov_filesfree_fops     },
 288         { .name =       "blocksize",
 289           .fops =       &lov_blksize_fops       },
 290         { .name =       "kbytestotal",
 291           .fops =       &lov_kbytestotal_fops   },
 292         { .name =       "kbytesfree",
 293           .fops =       &lov_kbytesfree_fops    },
 294         { .name =       "kbytesavail",
 295           .fops =       &lov_kbytesavail_fops   },
 296         { .name =       "desc_uuid",
 297           .fops =       &lov_desc_uuid_fops     },
 298         { 0 }
 299 };
 300
 301 struct file_operations lov_proc_target_fops = {
 302         .owner   = THIS_MODULE,
 303         .open    = lov_target_seq_open,
 304         .read    = seq_read,
 305         .llseek  = seq_lseek,
 306         .release = lprocfs_seq_release,
 307 };
 308 #endif /* LPROCFS */