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13 * General Public License version 2 for more details (a copy is included
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21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
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30 * Copyright (c) 2012, 2014, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/mdd/mdd_lproc.c
38 * Lustre Metadata Server (mdd) routines
40 * Author: Wang Di <wangdi@clusterfs.com>
43 #define DEBUG_SUBSYSTEM S_MDS
46 #include <obd_class.h>
47 #include <obd_support.h>
48 #include <lprocfs_status.h>
49 #include <libcfs/libcfs_string.h>
50 #include "mdd_internal.h"
53 mdd_atime_diff_seq_write(struct file *file, const char __user *buffer,
54 size_t count, loff_t *off)
56 struct seq_file *m = file->private_data;
57 struct mdd_device *mdd = m->private;
58 char kernbuf[20], *end;
59 unsigned long diff = 0;
61 if (count > (sizeof(kernbuf) - 1))
64 if (copy_from_user(kernbuf, buffer, count))
67 kernbuf[count] = '\0';
69 diff = simple_strtoul(kernbuf, &end, 0);
73 mdd->mdd_atime_diff = diff;
77 static int mdd_atime_diff_seq_show(struct seq_file *m, void *data)
79 struct mdd_device *mdd = m->private;
81 seq_printf(m, "%lu\n", mdd->mdd_atime_diff);
84 LPROC_SEQ_FOPS(mdd_atime_diff);
86 /**** changelogs ****/
87 static int mdd_changelog_mask_seq_show(struct seq_file *m, void *data)
89 struct mdd_device *mdd = m->private;
93 if (mdd->mdd_cl.mc_mask & (1 << i))
94 seq_printf(m, "%s ", changelog_type2str(i));
101 mdd_changelog_mask_seq_write(struct file *file, const char __user *buffer,
102 size_t count, loff_t *off)
104 struct seq_file *m = file->private_data;
105 struct mdd_device *mdd = m->private;
110 if (count >= PAGE_CACHE_SIZE)
112 OBD_ALLOC(kernbuf, PAGE_CACHE_SIZE);
115 if (copy_from_user(kernbuf, buffer, count))
116 GOTO(out, rc = -EFAULT);
119 rc = cfs_str2mask(kernbuf, changelog_type2str, &mdd->mdd_cl.mc_mask,
120 CHANGELOG_MINMASK, CHANGELOG_ALLMASK);
124 OBD_FREE(kernbuf, PAGE_CACHE_SIZE);
127 LPROC_SEQ_FOPS(mdd_changelog_mask);
129 static int lprocfs_changelog_users_cb(const struct lu_env *env,
130 struct llog_handle *llh,
131 struct llog_rec_hdr *hdr, void *data)
133 struct llog_changelog_user_rec *rec;
134 struct seq_file *m = data;
136 LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN);
138 rec = (struct llog_changelog_user_rec *)hdr;
140 seq_printf(m, CHANGELOG_USER_PREFIX"%-3d "LPU64"\n",
141 rec->cur_id, rec->cur_endrec);
145 static int mdd_changelog_users_seq_show(struct seq_file *m, void *data)
148 struct mdd_device *mdd = m->private;
149 struct llog_ctxt *ctxt;
153 ctxt = llog_get_context(mdd2obd_dev(mdd),
154 LLOG_CHANGELOG_USER_ORIG_CTXT);
157 LASSERT(ctxt->loc_handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT);
159 rc = lu_env_init(&env, LCT_LOCAL);
165 spin_lock(&mdd->mdd_cl.mc_lock);
166 cur = mdd->mdd_cl.mc_index;
167 spin_unlock(&mdd->mdd_cl.mc_lock);
169 seq_printf(m, "current index: "LPU64"\n", cur);
170 seq_printf(m, "%-5s %s\n", "ID", "index");
172 llog_cat_process(&env, ctxt->loc_handle, lprocfs_changelog_users_cb,
179 LPROC_SEQ_FOPS_RO(mdd_changelog_users);
181 static int mdd_sync_perm_seq_show(struct seq_file *m, void *data)
183 struct mdd_device *mdd = m->private;
185 LASSERT(mdd != NULL);
186 seq_printf(m, "%d\n", mdd->mdd_sync_permission);
191 mdd_sync_perm_seq_write(struct file *file, const char __user *buffer,
192 size_t count, loff_t *off)
194 struct seq_file *m = file->private_data;
195 struct mdd_device *mdd = m->private;
198 LASSERT(mdd != NULL);
199 rc = lprocfs_write_helper(buffer, count, &val);
203 mdd->mdd_sync_permission = !!val;
206 LPROC_SEQ_FOPS(mdd_sync_perm);
208 static int mdd_lfsck_speed_limit_seq_show(struct seq_file *m, void *data)
210 struct mdd_device *mdd = m->private;
212 LASSERT(mdd != NULL);
213 return lfsck_get_speed(m, mdd->mdd_bottom);
217 mdd_lfsck_speed_limit_seq_write(struct file *file, const char __user *buffer,
218 size_t count, loff_t *off)
220 struct seq_file *m = file->private_data;
221 struct mdd_device *mdd = m->private;
225 LASSERT(mdd != NULL);
226 rc = lprocfs_write_helper(buffer, count, &val);
230 rc = lfsck_set_speed(mdd->mdd_bottom, val);
231 return rc != 0 ? rc : count;
233 LPROC_SEQ_FOPS(mdd_lfsck_speed_limit);
235 static int mdd_lfsck_async_windows_seq_show(struct seq_file *m, void *data)
237 struct mdd_device *mdd = m->private;
239 LASSERT(mdd != NULL);
240 return lfsck_get_windows(m, mdd->mdd_bottom);
244 mdd_lfsck_async_windows_seq_write(struct file *file, const char __user *buffer,
245 size_t count, loff_t *off)
247 struct seq_file *m = file->private_data;
248 struct mdd_device *mdd = m->private;
252 LASSERT(mdd != NULL);
253 rc = lprocfs_write_helper(buffer, count, &val);
255 rc = lfsck_set_windows(mdd->mdd_bottom, val);
257 return rc != 0 ? rc : count;
259 LPROC_SEQ_FOPS(mdd_lfsck_async_windows);
261 static int mdd_lfsck_namespace_seq_show(struct seq_file *m, void *data)
263 struct mdd_device *mdd = m->private;
265 LASSERT(mdd != NULL);
267 return lfsck_dump(m, mdd->mdd_bottom, LFSCK_TYPE_NAMESPACE);
269 LPROC_SEQ_FOPS_RO(mdd_lfsck_namespace);
271 static int mdd_lfsck_layout_seq_show(struct seq_file *m, void *data)
273 struct mdd_device *mdd = m->private;
275 LASSERT(mdd != NULL);
277 return lfsck_dump(m, mdd->mdd_bottom, LFSCK_TYPE_LAYOUT);
279 LPROC_SEQ_FOPS_RO(mdd_lfsck_layout);
281 static struct lprocfs_vars lprocfs_mdd_obd_vars[] = {
282 { .name = "atime_diff",
283 .fops = &mdd_atime_diff_fops },
284 { .name = "changelog_mask",
285 .fops = &mdd_changelog_mask_fops },
286 { .name = "changelog_users",
287 .fops = &mdd_changelog_users_fops },
288 { .name = "sync_permission",
289 .fops = &mdd_sync_perm_fops },
290 { .name = "lfsck_speed_limit",
291 .fops = &mdd_lfsck_speed_limit_fops },
292 { .name = "lfsck_async_windows",
293 .fops = &mdd_lfsck_async_windows_fops },
294 { .name = "lfsck_namespace",
295 .fops = &mdd_lfsck_namespace_fops },
296 { .name = "lfsck_layout",
297 .fops = &mdd_lfsck_layout_fops },
301 int mdd_procfs_init(struct mdd_device *mdd, const char *name)
303 struct obd_device *obd = mdd2obd_dev(mdd);
304 struct obd_type *type;
308 /* at the moment there is no linkage between lu_type
309 * and obd_type, so we lookup obd_type this way */
310 type = class_search_type(LUSTRE_MDD_NAME);
312 LASSERT(name != NULL);
313 LASSERT(type != NULL);
314 LASSERT(obd != NULL);
316 /* Find the type procroot and add the proc entry for this device */
317 obd->obd_vars = lprocfs_mdd_obd_vars;
318 mdd->mdd_proc_entry = lprocfs_register(name, type->typ_procroot,
320 if (IS_ERR(mdd->mdd_proc_entry)) {
321 rc = PTR_ERR(mdd->mdd_proc_entry);
322 CERROR("Error %d setting up lprocfs for %s\n",
324 mdd->mdd_proc_entry = NULL;
331 mdd_procfs_fini(mdd);
335 void mdd_procfs_fini(struct mdd_device *mdd)
337 if (mdd->mdd_proc_entry)
338 lprocfs_remove(&mdd->mdd_proc_entry);