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, const char *buffer,
  58                                         size_t count, loff_t *off)
  59 {
  60         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
  61         struct lov_desc *desc;
  62         __u64 val;
  63         int rc;
  64
  65         LASSERT(dev != NULL);
  66         desc = &dev->u.lov.desc;
  67         rc = lprocfs_write_u64_helper(buffer, count, &val);
  68         if (rc)
  69                 return rc;
  70
  71         lov_fix_desc_stripe_size(&val);
  72         desc->ld_default_stripe_size = val;
  73         return count;
  74 }
  75 LPROC_SEQ_FOPS(lov_stripesize);
  76
  77 static int lov_stripeoffset_seq_show(struct seq_file *m, void *v)
  78 {
  79         struct obd_device *dev = (struct obd_device *)m->private;
  80         struct lov_desc *desc;
  81
  82         LASSERT(dev != NULL);
  83         desc = &dev->u.lov.desc;
  84         return seq_printf(m, LPU64"\n", desc->ld_default_stripe_offset);
  85 }
  86
  87 static ssize_t lov_stripeoffset_seq_write(struct file *file, const char *buffer,
  88                                           size_t count, loff_t *off)
  89 {
  90         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
  91         struct lov_desc *desc;
  92         __u64 val;
  93         int rc;
  94
  95         LASSERT(dev != NULL);
  96         desc = &dev->u.lov.desc;
  97         rc = lprocfs_write_u64_helper(buffer, count, &val);
  98         if (rc)
  99                 return rc;
 100
 101         desc->ld_default_stripe_offset = val;
 102         return count;
 103 }
 104 LPROC_SEQ_FOPS(lov_stripeoffset);
 105
 106 static int lov_stripetype_seq_show(struct seq_file *m, void *v)
 107 {
 108         struct obd_device* dev = (struct obd_device*)m->private;
 109         struct lov_desc *desc;
 110
 111         LASSERT(dev != NULL);
 112         desc = &dev->u.lov.desc;
 113         return seq_printf(m, "%u\n", desc->ld_pattern);
 114 }
 115
 116 static ssize_t lov_stripetype_seq_write(struct file *file, const char *buffer,
 117                                         size_t count, loff_t *off)
 118 {
 119         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 120         struct lov_desc *desc;
 121         int val, rc;
 122
 123         LASSERT(dev != NULL);
 124         desc = &dev->u.lov.desc;
 125         rc = lprocfs_write_helper(buffer, count, &val);
 126         if (rc)
 127                 return rc;
 128
 129         lov_fix_desc_pattern(&val);
 130         desc->ld_pattern = val;
 131         return count;
 132 }
 133 LPROC_SEQ_FOPS(lov_stripetype);
 134
 135 static int lov_stripecount_seq_show(struct seq_file *m, void *v)
 136 {
 137         struct obd_device *dev = (struct obd_device *)m->private;
 138         struct lov_desc *desc;
 139
 140         LASSERT(dev != NULL);
 141         desc = &dev->u.lov.desc;
 142         return seq_printf(m, "%d\n",
 143                           (__s16)(desc->ld_default_stripe_count + 1) - 1);
 144 }
 145
 146 static ssize_t lov_stripecount_seq_write(struct file *file, const char *buffer,
 147                                          size_t count, loff_t *off)
 148 {
 149         struct obd_device *dev = ((struct seq_file *)file->private_data)->private;
 150         struct lov_desc *desc;
 151         int val, rc;
 152
 153         LASSERT(dev != NULL);
 154         desc = &dev->u.lov.desc;
 155         rc = lprocfs_write_helper(buffer, count, &val);
 156         if (rc)
 157                 return rc;
 158
 159         lov_fix_desc_stripe_count(&val);
 160         desc->ld_default_stripe_count = val;
 161         return count;
 162 }
 163 LPROC_SEQ_FOPS(lov_stripecount);
 164
 165 static int lov_numobd_seq_show(struct seq_file *m, void *v)
 166 {
 167         struct obd_device *dev = (struct obd_device*)m->private;
 168         struct lov_desc *desc;
 169
 170         LASSERT(dev != NULL);
 171         desc = &dev->u.lov.desc;
 172         return seq_printf(m, "%u\n", desc->ld_tgt_count);
 173 }
 174 LPROC_SEQ_FOPS_RO(lov_numobd);
 175
 176 static int lov_activeobd_seq_show(struct seq_file *m, void *v)
 177 {
 178         struct obd_device* dev = (struct obd_device*)m->private;
 179         struct lov_desc *desc;
 180
 181         LASSERT(dev != NULL);
 182         desc = &dev->u.lov.desc;
 183         return seq_printf(m, "%u\n", desc->ld_active_tgt_count);
 184 }
 185 LPROC_SEQ_FOPS_RO(lov_activeobd);
 186
 187 static int lov_desc_uuid_seq_show(struct seq_file *m, void *v)
 188 {
 189         struct obd_device *dev = m->private;
 190         struct lov_obd *lov;
 191
 192         LASSERT(dev != NULL);
 193         lov = &dev->u.lov;
 194         return seq_printf(m, "%s\n", lov->desc.ld_uuid.uuid);
 195 }
 196 LPROC_SEQ_FOPS_RO(lov_desc_uuid);
 197
 198 static void *lov_tgt_seq_start(struct seq_file *p, loff_t *pos)
 199 {
 200         struct obd_device *dev = p->private;
 201         struct lov_obd *lov = &dev->u.lov;
 202
 203         while (*pos < lov->desc.ld_tgt_count) {
 204                 if (lov->lov_tgts[*pos])
 205                         return lov->lov_tgts[*pos];
 206                 ++*pos;
 207         }
 208         return NULL;
 209 }
 210
 211 static void lov_tgt_seq_stop(struct seq_file *p, void *v)
 212 {
 213 }
 214
 215 static void *lov_tgt_seq_next(struct seq_file *p, void *v, loff_t *pos)
 216 {
 217         struct obd_device *dev = p->private;
 218         struct lov_obd *lov = &dev->u.lov;
 219
 220         while (++*pos < lov->desc.ld_tgt_count) {
 221                 if (lov->lov_tgts[*pos])
 222                         return lov->lov_tgts[*pos];
 223         }
 224         return NULL;
 225 }
 226
 227 static int lov_tgt_seq_show(struct seq_file *p, void *v)
 228 {
 229         struct lov_tgt_desc *tgt = v;
 230         return seq_printf(p, "%d: %s %sACTIVE\n", tgt->ltd_index,
 231                           obd_uuid2str(&tgt->ltd_uuid),
 232                           tgt->ltd_active ? "" : "IN");
 233 }
 234
 235 struct seq_operations lov_tgt_sops = {
 236         .start = lov_tgt_seq_start,
 237         .stop = lov_tgt_seq_stop,
 238         .next = lov_tgt_seq_next,
 239         .show = lov_tgt_seq_show,
 240 };
 241
 242 static int lov_target_seq_open(struct inode *inode, struct file *file)
 243 {
 244         struct seq_file *seq;
 245         int rc;
 246
 247         LPROCFS_ENTRY_CHECK(PDE(inode));
 248         rc = seq_open(file, &lov_tgt_sops);
 249         if (rc)
 250                 return rc;
 251
 252         seq = file->private_data;
 253         seq->private = PDE_DATA(inode);
 254         return 0;
 255 }
 256
 257 LPROC_SEQ_FOPS_RO_TYPE(lov, uuid);
 258 LPROC_SEQ_FOPS_RO_TYPE(lov, filestotal);
 259 LPROC_SEQ_FOPS_RO_TYPE(lov, filesfree);
 260 LPROC_SEQ_FOPS_RO_TYPE(lov, blksize);
 261 LPROC_SEQ_FOPS_RO_TYPE(lov, kbytestotal);
 262 LPROC_SEQ_FOPS_RO_TYPE(lov, kbytesfree);
 263 LPROC_SEQ_FOPS_RO_TYPE(lov, kbytesavail);
 264
 265 struct lprocfs_seq_vars lprocfs_lov_obd_vars[] = {
 266         { "uuid",               &lov_uuid_fops          },
 267         { "stripesize",         &lov_stripesize_fops    },
 268         { "stripeoffset",       &lov_stripeoffset_fops  },
 269         { "stripecount",        &lov_stripecount_fops   },
 270         { "stripetype",         &lov_stripetype_fops    },
 271         { "numobd",             &lov_numobd_fops        },
 272         { "activeobd",          &lov_activeobd_fops     },
 273         { "filestotal",         &lov_filestotal_fops    },
 274         { "filesfree",          &lov_filesfree_fops     },
 275         { "blocksize",          &lov_blksize_fops       },
 276         { "kbytestotal",        &lov_kbytestotal_fops   },
 277         { "kbytesfree",         &lov_kbytesfree_fops    },
 278         { "kbytesavail",        &lov_kbytesavail_fops   },
 279         { "desc_uuid",          &lov_desc_uuid_fops     },
 280         { 0 }
 281 };
 282
 283 struct file_operations lov_proc_target_fops = {
 284         .owner   = THIS_MODULE,
 285         .open    = lov_target_seq_open,
 286         .read    = seq_read,
 287         .llseek  = seq_lseek,
 288         .release = lprocfs_seq_release,
 289 };
 290 #endif /* LPROCFS */