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         __u64 val;
  65         int rc;
  66
  67         LASSERT(dev != NULL);
  68         desc = &dev->u.lov.desc;
  69         rc = lprocfs_write_u64_helper(buffer, count, &val);
  70         if (rc)
  71                 return rc;
  72
  73         lov_fix_desc_stripe_size(&val);
  74         desc->ld_default_stripe_size = val;
  75         return count;
  76 }
  77 LPROC_SEQ_FOPS(lov_stripesize);
  78
  79 static int lov_stripeoffset_seq_show(struct seq_file *m, void *v)
  80 {
  81         struct obd_device *dev = (struct obd_device *)m->private;
  82         struct lov_desc *desc;
  83
  84         LASSERT(dev != NULL);
  85         desc = &dev->u.lov.desc;
  86         seq_printf(m, LPU64"\n", desc->ld_default_stripe_offset);
  87         return 0;
  88 }
  89
  90 static ssize_t lov_stripeoffset_seq_write(struct file *file,
  91                                           const char __user *buffer,
  92                                           size_t count, loff_t *off)
  93 {
  94         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
  95         struct lov_desc *desc;
  96         __u64 val;
  97         int rc;
  98
  99         LASSERT(dev != NULL);
 100         desc = &dev->u.lov.desc;
 101         rc = lprocfs_write_u64_helper(buffer, count, &val);
 102         if (rc)
 103                 return rc;
 104
 105         desc->ld_default_stripe_offset = val;
 106         return count;
 107 }
 108 LPROC_SEQ_FOPS(lov_stripeoffset);
 109
 110 static int lov_stripetype_seq_show(struct seq_file *m, void *v)
 111 {
 112         struct obd_device* dev = (struct obd_device*)m->private;
 113         struct lov_desc *desc;
 114
 115         LASSERT(dev != NULL);
 116         desc = &dev->u.lov.desc;
 117         seq_printf(m, "%u\n", desc->ld_pattern);
 118         return 0;
 119 }
 120
 121 static ssize_t lov_stripetype_seq_write(struct file *file,
 122                                         const char __user *buffer,
 123                                         size_t count, loff_t *off)
 124 {
 125         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 126         struct lov_desc *desc;
 127         int val, rc;
 128
 129         LASSERT(dev != NULL);
 130         desc = &dev->u.lov.desc;
 131         rc = lprocfs_write_helper(buffer, count, &val);
 132         if (rc)
 133                 return rc;
 134
 135         lov_fix_desc_pattern(&val);
 136         desc->ld_pattern = val;
 137         return count;
 138 }
 139 LPROC_SEQ_FOPS(lov_stripetype);
 140
 141 static int lov_stripecount_seq_show(struct seq_file *m, void *v)
 142 {
 143         struct obd_device *dev = (struct obd_device *)m->private;
 144         struct lov_desc *desc;
 145
 146         LASSERT(dev != NULL);
 147         desc = &dev->u.lov.desc;
 148         seq_printf(m, "%d\n",
 149                   (__s16)(desc->ld_default_stripe_count + 1) - 1);
 150         return 0;
 151 }
 152
 153 static ssize_t lov_stripecount_seq_write(struct file *file,
 154                                          const char __user *buffer,
 155                                          size_t count, loff_t *off)
 156 {
 157         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 158         struct lov_desc *desc;
 159         int val, rc;
 160
 161         LASSERT(dev != NULL);
 162         desc = &dev->u.lov.desc;
 163         rc = lprocfs_write_helper(buffer, count, &val);
 164         if (rc)
 165                 return rc;
 166
 167         lov_fix_desc_stripe_count(&val);
 168         desc->ld_default_stripe_count = val;
 169         return count;
 170 }
 171 LPROC_SEQ_FOPS(lov_stripecount);
 172
 173 static int lov_numobd_seq_show(struct seq_file *m, void *v)
 174 {
 175         struct obd_device *dev = (struct obd_device*)m->private;
 176         struct lov_desc *desc;
 177
 178         LASSERT(dev != NULL);
 179         desc = &dev->u.lov.desc;
 180         seq_printf(m, "%u\n", desc->ld_tgt_count);
 181         return 0;
 182 }
 183 LPROC_SEQ_FOPS_RO(lov_numobd);
 184
 185 static int lov_activeobd_seq_show(struct seq_file *m, void *v)
 186 {
 187         struct obd_device* dev = (struct obd_device*)m->private;
 188         struct lov_desc *desc;
 189
 190         LASSERT(dev != NULL);
 191         desc = &dev->u.lov.desc;
 192         seq_printf(m, "%u\n", desc->ld_active_tgt_count);
 193         return 0;
 194 }
 195 LPROC_SEQ_FOPS_RO(lov_activeobd);
 196
 197 static int lov_desc_uuid_seq_show(struct seq_file *m, void *v)
 198 {
 199         struct obd_device *dev = m->private;
 200         struct lov_obd *lov;
 201
 202         LASSERT(dev != NULL);
 203         lov = &dev->u.lov;
 204         seq_printf(m, "%s\n", lov->desc.ld_uuid.uuid);
 205         return 0;
 206 }
 207 LPROC_SEQ_FOPS_RO(lov_desc_uuid);
 208
 209 static void *lov_tgt_seq_start(struct seq_file *p, loff_t *pos)
 210 {
 211         struct obd_device *dev = p->private;
 212         struct lov_obd *lov = &dev->u.lov;
 213
 214         while (*pos < lov->desc.ld_tgt_count) {
 215                 if (lov->lov_tgts[*pos])
 216                         return lov->lov_tgts[*pos];
 217                 ++*pos;
 218         }
 219         return NULL;
 220 }
 221
 222 static void lov_tgt_seq_stop(struct seq_file *p, void *v)
 223 {
 224 }
 225
 226 static void *lov_tgt_seq_next(struct seq_file *p, void *v, 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         }
 235         return NULL;
 236 }
 237
 238 static int lov_tgt_seq_show(struct seq_file *p, void *v)
 239 {
 240         struct lov_tgt_desc *tgt = v;
 241         seq_printf(p, "%d: %s %sACTIVE\n", tgt->ltd_index,
 242                    obd_uuid2str(&tgt->ltd_uuid),
 243                    tgt->ltd_active ? "" : "IN");
 244         return 0;
 245 }
 246
 247 static const struct seq_operations lov_tgt_sops = {
 248         .start = lov_tgt_seq_start,
 249         .stop = lov_tgt_seq_stop,
 250         .next = lov_tgt_seq_next,
 251         .show = lov_tgt_seq_show,
 252 };
 253
 254 static int lov_target_seq_open(struct inode *inode, struct file *file)
 255 {
 256         struct seq_file *seq;
 257         int rc;
 258
 259         rc = LPROCFS_ENTRY_CHECK(inode);
 260         if (rc < 0)
 261                 return rc;
 262
 263         rc = seq_open(file, &lov_tgt_sops);
 264         if (rc)
 265                 return rc;
 266
 267         seq = file->private_data;
 268         seq->private = PDE_DATA(inode);
 269         return 0;
 270 }
 271
 272 LPROC_SEQ_FOPS_RO_TYPE(lov, uuid);
 273 LPROC_SEQ_FOPS_RO_TYPE(lov, filestotal);
 274 LPROC_SEQ_FOPS_RO_TYPE(lov, filesfree);
 275 LPROC_SEQ_FOPS_RO_TYPE(lov, blksize);
 276 LPROC_SEQ_FOPS_RO_TYPE(lov, kbytestotal);
 277 LPROC_SEQ_FOPS_RO_TYPE(lov, kbytesfree);
 278 LPROC_SEQ_FOPS_RO_TYPE(lov, kbytesavail);
 279
 280 struct lprocfs_vars lprocfs_lov_obd_vars[] = {
 281         { .name =       "uuid",
 282           .fops =       &lov_uuid_fops          },
 283         { .name =       "stripesize",
 284           .fops =       &lov_stripesize_fops    },
 285         { .name =       "stripeoffset",
 286           .fops =       &lov_stripeoffset_fops  },
 287         { .name =       "stripecount",
 288           .fops =       &lov_stripecount_fops   },
 289         { .name =       "stripetype",
 290           .fops =       &lov_stripetype_fops    },
 291         { .name =       "numobd",
 292           .fops =       &lov_numobd_fops        },
 293         { .name =       "activeobd",
 294           .fops =       &lov_activeobd_fops     },
 295         { .name =       "filestotal",
 296           .fops =       &lov_filestotal_fops    },
 297         { .name =       "filesfree",
 298           .fops =       &lov_filesfree_fops     },
 299         { .name =       "blocksize",
 300           .fops =       &lov_blksize_fops       },
 301         { .name =       "kbytestotal",
 302           .fops =       &lov_kbytestotal_fops   },
 303         { .name =       "kbytesfree",
 304           .fops =       &lov_kbytesfree_fops    },
 305         { .name =       "kbytesavail",
 306           .fops =       &lov_kbytesavail_fops   },
 307         { .name =       "desc_uuid",
 308           .fops =       &lov_desc_uuid_fops     },
 309         { NULL }
 310 };
 311
 312 struct file_operations lov_proc_target_fops = {
 313         .owner   = THIS_MODULE,
 314         .open    = lov_target_seq_open,
 315         .read    = seq_read,
 316         .llseek  = seq_lseek,
 317         .release = lprocfs_seq_release,
 318 };
 319 #endif /* CONFIG_PROC_FS */