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, 2015, 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 CONFIG_PROC_FS
  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         seq_printf(m, LPU64"\n", desc->ld_default_stripe_size);
  55         return 0;
  56 }
  57
  58 static ssize_t lov_stripesize_seq_write(struct file *file,
  59                                         const char __user *buffer,
  60                                         size_t count, loff_t *off)
  61 {
  62         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
  63         struct lov_desc *desc;
  64         __s64 val;
  65         int rc;
  66
  67         LASSERT(dev != NULL);
  68         desc = &dev->u.lov.desc;
  69         rc = lprocfs_str_to_s64(buffer, count, &val);
  70         if (rc)
  71                 return rc;
  72         if (val < 0)
  73                 return -ERANGE;
  74
  75         lov_fix_desc_stripe_size(&val);
  76         desc->ld_default_stripe_size = val;
  77
  78         return count;
  79 }
  80 LPROC_SEQ_FOPS(lov_stripesize);
  81
  82 static int lov_stripeoffset_seq_show(struct seq_file *m, void *v)
  83 {
  84         struct obd_device *dev = (struct obd_device *)m->private;
  85         struct lov_desc *desc;
  86
  87         LASSERT(dev != NULL);
  88         desc = &dev->u.lov.desc;
  89         seq_printf(m, LPU64"\n", desc->ld_default_stripe_offset);
  90         return 0;
  91 }
  92
  93 static ssize_t lov_stripeoffset_seq_write(struct file *file,
  94                                           const char __user *buffer,
  95                                           size_t count, loff_t *off)
  96 {
  97         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
  98         struct lov_desc *desc;
  99         __s64 val;
 100         int rc;
 101
 102         LASSERT(dev != NULL);
 103         desc = &dev->u.lov.desc;
 104         rc = lprocfs_str_to_s64(buffer, count, &val);
 105         if (rc)
 106                 return rc;
 107         if (val < 0)
 108                 return -ERANGE;
 109
 110         desc->ld_default_stripe_offset = val;
 111
 112         return count;
 113 }
 114 LPROC_SEQ_FOPS(lov_stripeoffset);
 115
 116 static int lov_stripetype_seq_show(struct seq_file *m, void *v)
 117 {
 118         struct obd_device* dev = (struct obd_device*)m->private;
 119         struct lov_desc *desc;
 120
 121         LASSERT(dev != NULL);
 122         desc = &dev->u.lov.desc;
 123         seq_printf(m, "%u\n", desc->ld_pattern);
 124         return 0;
 125 }
 126
 127 static ssize_t lov_stripetype_seq_write(struct file *file,
 128                                         const char __user *buffer,
 129                                         size_t count, loff_t *off)
 130 {
 131         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 132         struct lov_desc *desc;
 133         int pattern, rc;
 134         __s64 val;
 135
 136         LASSERT(dev != NULL);
 137         desc = &dev->u.lov.desc;
 138         rc = lprocfs_str_to_s64(buffer, count, &val);
 139         if (rc)
 140                 return rc;
 141         if (val < INT_MIN || val > INT_MAX)
 142                 return -ERANGE;
 143
 144         pattern = val;
 145         lov_fix_desc_pattern(&pattern);
 146         desc->ld_pattern = pattern;
 147
 148         return count;
 149 }
 150 LPROC_SEQ_FOPS(lov_stripetype);
 151
 152 static int lov_stripecount_seq_show(struct seq_file *m, void *v)
 153 {
 154         struct obd_device *dev = (struct obd_device *)m->private;
 155         struct lov_desc *desc;
 156
 157         LASSERT(dev != NULL);
 158         desc = &dev->u.lov.desc;
 159         seq_printf(m, "%d\n",
 160                   (__s16)(desc->ld_default_stripe_count + 1) - 1);
 161         return 0;
 162 }
 163
 164 static ssize_t lov_stripecount_seq_write(struct file *file,
 165                                          const char __user *buffer,
 166                                          size_t count, loff_t *off)
 167 {
 168         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 169         struct lov_desc *desc;
 170         int rc;
 171         __u32 stripe_count;
 172         __s64 val;
 173
 174         LASSERT(dev != NULL);
 175         desc = &dev->u.lov.desc;
 176         rc = lprocfs_str_to_s64(buffer, count, &val);
 177         if (rc)
 178                 return rc;
 179         if (val < 0)
 180                 return -ERANGE;
 181
 182         stripe_count = val;
 183         lov_fix_desc_stripe_count(&stripe_count);
 184         desc->ld_default_stripe_count = stripe_count;
 185
 186         return count;
 187 }
 188 LPROC_SEQ_FOPS(lov_stripecount);
 189
 190 static int lov_numobd_seq_show(struct seq_file *m, void *v)
 191 {
 192         struct obd_device *dev = (struct obd_device*)m->private;
 193         struct lov_desc *desc;
 194
 195         LASSERT(dev != NULL);
 196         desc = &dev->u.lov.desc;
 197         seq_printf(m, "%u\n", desc->ld_tgt_count);
 198         return 0;
 199 }
 200 LPROC_SEQ_FOPS_RO(lov_numobd);
 201
 202 static int lov_activeobd_seq_show(struct seq_file *m, void *v)
 203 {
 204         struct obd_device* dev = (struct obd_device*)m->private;
 205         struct lov_desc *desc;
 206
 207         LASSERT(dev != NULL);
 208         desc = &dev->u.lov.desc;
 209         seq_printf(m, "%u\n", desc->ld_active_tgt_count);
 210         return 0;
 211 }
 212 LPROC_SEQ_FOPS_RO(lov_activeobd);
 213
 214 static int lov_desc_uuid_seq_show(struct seq_file *m, void *v)
 215 {
 216         struct obd_device *dev = m->private;
 217         struct lov_obd *lov;
 218
 219         LASSERT(dev != NULL);
 220         lov = &dev->u.lov;
 221         seq_printf(m, "%s\n", lov->desc.ld_uuid.uuid);
 222         return 0;
 223 }
 224 LPROC_SEQ_FOPS_RO(lov_desc_uuid);
 225
 226 static void *lov_tgt_seq_start(struct seq_file *p, loff_t *pos)
 227 {
 228         struct obd_device *dev = p->private;
 229         struct lov_obd *lov = &dev->u.lov;
 230
 231         while (*pos < lov->desc.ld_tgt_count) {
 232                 if (lov->lov_tgts[*pos])
 233                         return lov->lov_tgts[*pos];
 234                 ++*pos;
 235         }
 236         return NULL;
 237 }
 238
 239 static void lov_tgt_seq_stop(struct seq_file *p, void *v)
 240 {
 241 }
 242
 243 static void *lov_tgt_seq_next(struct seq_file *p, void *v, loff_t *pos)
 244 {
 245         struct obd_device *dev = p->private;
 246         struct lov_obd *lov = &dev->u.lov;
 247
 248         while (++*pos < lov->desc.ld_tgt_count) {
 249                 if (lov->lov_tgts[*pos])
 250                         return lov->lov_tgts[*pos];
 251         }
 252         return NULL;
 253 }
 254
 255 static int lov_tgt_seq_show(struct seq_file *p, void *v)
 256 {
 257         struct lov_tgt_desc *tgt = v;
 258         seq_printf(p, "%d: %s %sACTIVE\n", tgt->ltd_index,
 259                    obd_uuid2str(&tgt->ltd_uuid),
 260                    tgt->ltd_active ? "" : "IN");
 261         return 0;
 262 }
 263
 264 static const struct seq_operations lov_tgt_sops = {
 265         .start = lov_tgt_seq_start,
 266         .stop = lov_tgt_seq_stop,
 267         .next = lov_tgt_seq_next,
 268         .show = lov_tgt_seq_show,
 269 };
 270
 271 static int lov_target_seq_open(struct inode *inode, struct file *file)
 272 {
 273         struct seq_file *seq;
 274         int rc;
 275
 276         rc = LPROCFS_ENTRY_CHECK(inode);
 277         if (rc < 0)
 278                 return rc;
 279
 280         rc = seq_open(file, &lov_tgt_sops);
 281         if (rc)
 282                 return rc;
 283
 284         seq = file->private_data;
 285         seq->private = PDE_DATA(inode);
 286         return 0;
 287 }
 288
 289 LPROC_SEQ_FOPS_RO_TYPE(lov, uuid);
 290 LPROC_SEQ_FOPS_RO_TYPE(lov, filestotal);
 291 LPROC_SEQ_FOPS_RO_TYPE(lov, filesfree);
 292 LPROC_SEQ_FOPS_RO_TYPE(lov, blksize);
 293 LPROC_SEQ_FOPS_RO_TYPE(lov, kbytestotal);
 294 LPROC_SEQ_FOPS_RO_TYPE(lov, kbytesfree);
 295 LPROC_SEQ_FOPS_RO_TYPE(lov, kbytesavail);
 296
 297 struct lprocfs_vars lprocfs_lov_obd_vars[] = {
 298         { .name =       "uuid",
 299           .fops =       &lov_uuid_fops          },
 300         { .name =       "stripesize",
 301           .fops =       &lov_stripesize_fops    },
 302         { .name =       "stripeoffset",
 303           .fops =       &lov_stripeoffset_fops  },
 304         { .name =       "stripecount",
 305           .fops =       &lov_stripecount_fops   },
 306         { .name =       "stripetype",
 307           .fops =       &lov_stripetype_fops    },
 308         { .name =       "numobd",
 309           .fops =       &lov_numobd_fops        },
 310         { .name =       "activeobd",
 311           .fops =       &lov_activeobd_fops     },
 312         { .name =       "filestotal",
 313           .fops =       &lov_filestotal_fops    },
 314         { .name =       "filesfree",
 315           .fops =       &lov_filesfree_fops     },
 316         { .name =       "blocksize",
 317           .fops =       &lov_blksize_fops       },
 318         { .name =       "kbytestotal",
 319           .fops =       &lov_kbytestotal_fops   },
 320         { .name =       "kbytesfree",
 321           .fops =       &lov_kbytesfree_fops    },
 322         { .name =       "kbytesavail",
 323           .fops =       &lov_kbytesavail_fops   },
 324         { .name =       "desc_uuid",
 325           .fops =       &lov_desc_uuid_fops     },
 326         { NULL }
 327 };
 328
 329 struct file_operations lov_proc_target_fops = {
 330         .owner   = THIS_MODULE,
 331         .open    = lov_target_seq_open,
 332         .read    = seq_read,
 333         .llseek  = seq_lseek,
 334         .release = lprocfs_seq_release,
 335 };
 336 #endif /* CONFIG_PROC_FS */