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13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
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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 *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 return seq_printf(m, "%lu\n", mdd->mdd_atime_diff);
83 LPROC_SEQ_FOPS(mdd_atime_diff);
85 /**** changelogs ****/
86 static int mdd_changelog_mask_seq_show(struct seq_file *m, void *data)
88 struct mdd_device *mdd = m->private;
92 if (mdd->mdd_cl.mc_mask & (1 << i))
93 seq_printf(m, "%s ", changelog_type2str(i));
100 mdd_changelog_mask_seq_write(struct file *file, const char *buffer,
101 size_t count, loff_t *off)
103 struct seq_file *m = file->private_data;
104 struct mdd_device *mdd = m->private;
109 if (count >= PAGE_CACHE_SIZE)
111 OBD_ALLOC(kernbuf, PAGE_CACHE_SIZE);
114 if (copy_from_user(kernbuf, buffer, count))
115 GOTO(out, rc = -EFAULT);
118 rc = cfs_str2mask(kernbuf, changelog_type2str, &mdd->mdd_cl.mc_mask,
119 CHANGELOG_MINMASK, CHANGELOG_ALLMASK);
123 OBD_FREE(kernbuf, PAGE_CACHE_SIZE);
126 LPROC_SEQ_FOPS(mdd_changelog_mask);
128 static int lprocfs_changelog_users_cb(const struct lu_env *env,
129 struct llog_handle *llh,
130 struct llog_rec_hdr *hdr, void *data)
132 struct llog_changelog_user_rec *rec;
133 struct seq_file *m = data;
135 LASSERT(llh->lgh_hdr->llh_flags & LLOG_F_IS_PLAIN);
137 rec = (struct llog_changelog_user_rec *)hdr;
139 seq_printf(m, CHANGELOG_USER_PREFIX"%-3d "LPU64"\n",
140 rec->cur_id, rec->cur_endrec);
144 static int mdd_changelog_users_seq_show(struct seq_file *m, void *data)
147 struct mdd_device *mdd = m->private;
148 struct llog_ctxt *ctxt;
152 ctxt = llog_get_context(mdd2obd_dev(mdd),
153 LLOG_CHANGELOG_USER_ORIG_CTXT);
156 LASSERT(ctxt->loc_handle->lgh_hdr->llh_flags & LLOG_F_IS_CAT);
158 rc = lu_env_init(&env, LCT_LOCAL);
164 spin_lock(&mdd->mdd_cl.mc_lock);
165 cur = mdd->mdd_cl.mc_index;
166 spin_unlock(&mdd->mdd_cl.mc_lock);
168 seq_printf(m, "current index: "LPU64"\n", cur);
169 seq_printf(m, "%-5s %s\n", "ID", "index");
171 llog_cat_process(&env, ctxt->loc_handle, lprocfs_changelog_users_cb,
178 LPROC_SEQ_FOPS_RO(mdd_changelog_users);
180 static int mdd_sync_perm_seq_show(struct seq_file *m, void *data)
182 struct mdd_device *mdd = m->private;
184 LASSERT(mdd != NULL);
185 return seq_printf(m, "%d\n", mdd->mdd_sync_permission);
189 mdd_sync_perm_seq_write(struct file *file, const char *buffer,
190 size_t count, loff_t *off)
192 struct seq_file *m = file->private_data;
193 struct mdd_device *mdd = m->private;
196 LASSERT(mdd != NULL);
197 rc = lprocfs_write_helper(buffer, count, &val);
201 mdd->mdd_sync_permission = !!val;
204 LPROC_SEQ_FOPS(mdd_sync_perm);
206 static int mdd_lfsck_speed_limit_seq_show(struct seq_file *m, void *data)
208 struct mdd_device *mdd = m->private;
210 LASSERT(mdd != NULL);
211 return lfsck_get_speed(m, mdd->mdd_bottom);
215 mdd_lfsck_speed_limit_seq_write(struct file *file, const char *buffer,
216 size_t count, loff_t *off)
218 struct seq_file *m = file->private_data;
219 struct mdd_device *mdd = m->private;
223 LASSERT(mdd != NULL);
224 rc = lprocfs_write_helper(buffer, count, &val);
228 rc = lfsck_set_speed(mdd->mdd_bottom, val);
229 return rc != 0 ? rc : count;
231 LPROC_SEQ_FOPS(mdd_lfsck_speed_limit);
233 static int mdd_lfsck_async_windows_seq_show(struct seq_file *m, void *data)
235 struct mdd_device *mdd = m->private;
237 LASSERT(mdd != NULL);
238 return lfsck_get_windows(m, mdd->mdd_bottom);
242 mdd_lfsck_async_windows_seq_write(struct file *file, const char *buffer,
243 size_t count, loff_t *off)
245 struct seq_file *m = file->private_data;
246 struct mdd_device *mdd = m->private;
250 LASSERT(mdd != NULL);
251 rc = lprocfs_write_helper(buffer, count, &val);
253 rc = lfsck_set_windows(mdd->mdd_bottom, val);
255 return rc != 0 ? rc : count;
257 LPROC_SEQ_FOPS(mdd_lfsck_async_windows);
259 static int mdd_lfsck_namespace_seq_show(struct seq_file *m, void *data)
261 struct mdd_device *mdd = m->private;
263 LASSERT(mdd != NULL);
265 return lfsck_dump(m, mdd->mdd_bottom, LFSCK_TYPE_NAMESPACE);
267 LPROC_SEQ_FOPS_RO(mdd_lfsck_namespace);
269 static int mdd_lfsck_layout_seq_show(struct seq_file *m, void *data)
271 struct mdd_device *mdd = m->private;
273 LASSERT(mdd != NULL);
275 return lfsck_dump(m, mdd->mdd_bottom, LFSCK_TYPE_LAYOUT);
277 LPROC_SEQ_FOPS_RO(mdd_lfsck_layout);
279 static struct lprocfs_vars lprocfs_mdd_obd_vars[] = {
280 { .name = "atime_diff",
281 .fops = &mdd_atime_diff_fops },
282 { .name = "changelog_mask",
283 .fops = &mdd_changelog_mask_fops },
284 { .name = "changelog_users",
285 .fops = &mdd_changelog_users_fops },
286 { .name = "sync_permission",
287 .fops = &mdd_sync_perm_fops },
288 { .name = "lfsck_speed_limit",
289 .fops = &mdd_lfsck_speed_limit_fops },
290 { .name = "lfsck_async_windows",
291 .fops = &mdd_lfsck_async_windows_fops },
292 { .name = "lfsck_namespace",
293 .fops = &mdd_lfsck_namespace_fops },
294 { .name = "lfsck_layout",
295 .fops = &mdd_lfsck_layout_fops },
299 int mdd_procfs_init(struct mdd_device *mdd, const char *name)
301 struct obd_device *obd = mdd2obd_dev(mdd);
302 struct obd_type *type;
306 /* at the moment there is no linkage between lu_type
307 * and obd_type, so we lookup obd_type this way */
308 type = class_search_type(LUSTRE_MDD_NAME);
310 LASSERT(name != NULL);
311 LASSERT(type != NULL);
312 LASSERT(obd != NULL);
314 /* Find the type procroot and add the proc entry for this device */
315 obd->obd_vars = lprocfs_mdd_obd_vars;
316 mdd->mdd_proc_entry = lprocfs_register(name, type->typ_procroot,
318 if (IS_ERR(mdd->mdd_proc_entry)) {
319 rc = PTR_ERR(mdd->mdd_proc_entry);
320 CERROR("Error %d setting up lprocfs for %s\n",
322 mdd->mdd_proc_entry = NULL;
329 mdd_procfs_fini(mdd);
333 void mdd_procfs_fini(struct mdd_device *mdd)
335 if (mdd->mdd_proc_entry)
336 lprocfs_remove(&mdd->mdd_proc_entry);