1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2001-2003 Cluster File Systems, Inc.
5 * Author: Andreas Dilger <adilger@clusterfs.com>
7 * This file is part of Lustre, http://www.lustre.org.
9 * Lustre is free software; you can redistribute it and/or
10 * modify it under the terms of version 2 of the GNU General Public
11 * License as published by the Free Software Foundation.
13 * Lustre is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with Lustre; if not, write to the Free Software
20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 * remote api for llog - server side
26 #define DEBUG_SUBSYSTEM S_LOG
33 #include <liblustre.h>
38 #include <linux/obd_class.h>
39 #include <linux/lustre_log.h>
40 #include <linux/lustre_net.h>
41 #include <portals/list.h>
42 #include <linux/lustre_fsfilt.h>
46 int llog_origin_handle_create(struct ptlrpc_request *req)
48 struct obd_export *exp = req->rq_export;
49 struct obd_device *obd = exp->exp_obd;
50 struct obd_device *disk_obd;
51 struct llog_handle *loghandle;
52 struct llogd_body *body;
53 struct obd_run_ctxt saved;
54 struct llog_logid *logid = NULL;
55 struct llog_ctxt *ctxt;
57 int size = sizeof (*body);
61 body = lustre_swab_reqbuf(req, 0, sizeof(*body),
62 lustre_swab_llogd_body);
64 CERROR ("Can't unpack llogd_body\n");
65 GOTO(out, rc =-EFAULT);
68 if (body->lgd_logid.lgl_oid > 0)
69 logid = &body->lgd_logid;
71 if (req->rq_reqmsg->bufcount > 1) {
72 name = lustre_msg_string(req->rq_reqmsg, 1, 0);
74 CERROR("Can't unpack name\n");
75 GOTO(out, rc = -EFAULT);
77 CDEBUG(D_INFO, "opening log %s\n", name);
80 ctxt = llog_get_context(obd, body->lgd_ctxt_idx);
82 GOTO(out, rc = -EINVAL);
83 disk_obd = ctxt->loc_exp->exp_obd;
84 push_ctxt(&saved, &disk_obd->obd_ctxt, NULL);
86 rc = llog_create(ctxt, &loghandle, logid, name);
90 rc = lustre_pack_reply(req, 1, &size, NULL);
92 GOTO(out_close, rc = -ENOMEM);
94 body = lustre_msg_buf(req->rq_repmsg, 0, sizeof (*body));
95 body->lgd_logid = loghandle->lgh_id;
98 rc2 = llog_close(loghandle);
102 pop_ctxt(&saved, &disk_obd->obd_ctxt, NULL);
107 int llog_origin_handle_next_block(struct ptlrpc_request *req)
109 struct obd_export *exp = req->rq_export;
110 struct obd_device *obd = exp->exp_obd;
111 struct obd_device *disk_obd;
112 struct llog_handle *loghandle;
113 struct llogd_body *body;
114 struct obd_run_ctxt saved;
115 struct llog_ctxt *ctxt;
119 int size[] = {sizeof (*body),
124 body = lustre_swab_reqbuf(req, 0, sizeof(*body),
125 lustre_swab_llogd_body);
127 CERROR ("Can't unpack llogd_body\n");
128 GOTO(out, rc =-EFAULT);
131 OBD_ALLOC(buf, LLOG_CHUNK_SIZE);
133 GOTO(out, rc = -ENOMEM);
135 ctxt = llog_get_context(obd, body->lgd_ctxt_idx);
137 GOTO(out, rc = -EINVAL);
138 disk_obd = ctxt->loc_exp->exp_obd;
139 push_ctxt(&saved, &disk_obd->obd_ctxt, NULL);
141 rc = llog_create(ctxt, &loghandle, &body->lgd_logid, NULL);
145 flags = body->lgd_llh_flags;
146 rc = llog_init_handle(loghandle, flags, NULL);
150 memset(buf, 0, LLOG_CHUNK_SIZE);
151 rc = llog_next_block(loghandle, &body->lgd_saved_index,
153 &body->lgd_cur_offset, buf, LLOG_CHUNK_SIZE);
158 rc = lustre_pack_reply(req, 2, size, NULL);
160 GOTO(out_close, rc = -ENOMEM);
162 ptr = lustre_msg_buf(req->rq_repmsg, 0, sizeof (body));
163 memcpy(ptr, body, sizeof(*body));
165 ptr = lustre_msg_buf(req->rq_repmsg, 1, LLOG_CHUNK_SIZE);
166 memcpy(ptr, buf, LLOG_CHUNK_SIZE);
169 rc2 = llog_close(loghandle);
174 pop_ctxt(&saved, &disk_obd->obd_ctxt, NULL);
175 OBD_FREE(buf, LLOG_CHUNK_SIZE);
180 int llog_origin_handle_read_header(struct ptlrpc_request *req)
182 struct obd_export *exp = req->rq_export;
183 struct obd_device *obd = exp->exp_obd;
184 struct obd_device *disk_obd;
185 struct llog_handle *loghandle;
186 struct llogd_body *body;
187 struct llog_log_hdr *hdr;
188 struct obd_run_ctxt saved;
189 struct llog_ctxt *ctxt;
191 int size[] = {sizeof (*hdr)};
195 body = lustre_swab_reqbuf(req, 0, sizeof(*body),
196 lustre_swab_llogd_body);
198 CERROR ("Can't unpack llogd_body\n");
199 GOTO(out, rc =-EFAULT);
202 ctxt = llog_get_context(obd, body->lgd_ctxt_idx);
204 GOTO(out, rc = -EINVAL);
205 disk_obd = ctxt->loc_exp->exp_obd;
206 push_ctxt(&saved, &disk_obd->obd_ctxt, NULL);
208 rc = llog_create(ctxt, &loghandle, &body->lgd_logid, NULL);
212 /* init_handle reads the header */
213 flags = body->lgd_llh_flags;
214 rc = llog_init_handle(loghandle, flags, NULL);
218 rc = lustre_pack_reply(req, 1, size, NULL);
220 GOTO(out_close, rc = -ENOMEM);
222 hdr = lustre_msg_buf(req->rq_repmsg, 0, sizeof (*hdr));
223 memcpy(hdr, loghandle->lgh_hdr, sizeof(*hdr));
226 rc2 = llog_close(loghandle);
231 pop_ctxt(&saved, &disk_obd->obd_ctxt, NULL);
237 int llog_origin_handle_close(struct ptlrpc_request *req)
246 int llog_origin_handle_cancel(struct ptlrpc_request *req)
248 struct obd_device *obd = req->rq_export->exp_obd;
249 struct obd_device *disk_obd;
250 struct llog_cookie *logcookies;
251 struct llog_ctxt *ctxt;
252 int num_cookies, rc = 0, err, i;
253 struct obd_run_ctxt saved;
254 struct llog_handle *cathandle;
259 logcookies = lustre_msg_buf(req->rq_reqmsg, 0, sizeof(*logcookies));
260 num_cookies = req->rq_reqmsg->buflens[0]/sizeof(*logcookies);
261 if (logcookies == NULL || num_cookies == 0) {
262 DEBUG_REQ(D_HA, req, "no cookies sent");
266 ctxt = llog_get_context(obd, logcookies->lgc_subsys);
268 CWARN("llog subsys not setup or already cleanup\n");
272 disk_obd = ctxt->loc_exp->exp_obd;
273 push_ctxt(&saved, &disk_obd->obd_ctxt, NULL);
274 for (i = 0; i < num_cookies; i++, logcookies++) {
275 cathandle = ctxt->loc_handle;
276 LASSERT(cathandle != NULL);
277 inode = cathandle->lgh_file->f_dentry->d_inode;
279 handle = fsfilt_start_log(disk_obd, inode,
280 FSFILT_OP_CANCEL_UNLINK, NULL, 1);
281 if (IS_ERR(handle)) {
282 CERROR("fsfilt_start failed: %ld\n", PTR_ERR(handle));
283 GOTO(pop_ctxt, rc = PTR_ERR(handle));
286 rc = llog_cat_cancel_records(cathandle, 1, logcookies);
288 err = fsfilt_commit(disk_obd, inode, handle, 0);
290 CERROR("error committing transaction: %d\n", err);
297 pop_ctxt(&saved, &disk_obd->obd_ctxt, NULL);
299 CERROR("cancel %d llog-records failed: %d\n", num_cookies, rc);
301 CDEBUG(D_HA, "cancel %d llog-records\n", num_cookies);
305 EXPORT_SYMBOL(llog_origin_handle_cancel);
307 static int llog_catinfo_config(struct obd_device *obd, char *buf, int buf_len,
310 struct mds_obd *mds = &obd->u.mds;
311 struct llog_ctxt *ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
312 struct obd_run_ctxt saved;
313 struct llog_handle *handle = NULL;
315 int rc, i, l, remains = buf_len;
318 if (ctxt == NULL || mds == NULL)
321 push_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_ctxt, NULL);
323 sprintf(name[0], "%s", mds->mds_profile);
324 sprintf(name[1], "%s-clean", mds->mds_profile);
325 sprintf(name[2], "%s", client);
326 sprintf(name[3], "%s-clean", client);
328 for (i = 0; i < 4; i++) {
329 int index, uncanceled = 0;
330 rc = llog_create(ctxt, &handle, NULL, name[i]);
333 rc = llog_init_handle(handle, 0, NULL);
336 GOTO(out_pop, rc = -ENOENT);
339 for (index = 1; index < (LLOG_BITMAP_BYTES * 8); index ++) {
340 if (ext2_test_bit(index, handle->lgh_hdr->llh_bitmap))
344 l = snprintf(out, remains, "[Log Name]: %s\nLog Size: %llu\n"
345 "Last Index: %d\nUncanceled Records: %d\n\n",
347 handle->lgh_file->f_dentry->d_inode->i_size,
348 handle->lgh_last_idx, uncanceled);
357 pop_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_ctxt, NULL);
362 struct llog_ctxt *ctxt;
368 static int llog_catinfo_cb(struct llog_handle *cat,
369 struct llog_rec_hdr *rec, void *data)
371 static char *out = NULL;
372 static int remains = 0;
373 struct llog_ctxt *ctxt;
374 struct llog_handle *handle;
375 struct llog_logid *logid;
376 struct llog_logid_rec *lir;
377 int l, rc, index, count = 0;
378 struct cb_data *cbd = (struct cb_data*)data;
382 remains = cbd->remains;
387 if (!(cat->lgh_hdr->llh_flags & LLOG_F_IS_CAT))
390 lir = (struct llog_logid_rec *)rec;
391 logid = &lir->lid_id;
392 rc = llog_create(ctxt, &handle, logid, NULL);
395 rc = llog_init_handle(handle, 0, NULL);
399 for (index = 1; index < (LLOG_BITMAP_BYTES * 8); index++) {
400 if (ext2_test_bit(index, handle->lgh_hdr->llh_bitmap))
404 l = snprintf(out, remains, "\t[Log ID]: #"LPX64"#"LPX64"#%08x\n"
405 "\tLog Size: %llu\n\tLast Index: %d\n"
406 "\tUncanceled Records: %d\n",
407 logid->lgl_oid, logid->lgl_ogr, logid->lgl_ogen,
408 handle->lgh_file->f_dentry->d_inode->i_size,
409 handle->lgh_last_idx, count);
413 cbd->remains = remains;
415 CWARN("Not enough memory\n");
424 static int llog_catinfo_deletions(struct obd_device *obd, char *buf,
427 struct mds_obd *mds = &obd->u.mds;
428 struct llog_handle *handle;
429 struct obd_run_ctxt saved;
431 struct llog_catid *idarray;
432 struct llog_logid *id;
433 char name[32] = CATLIST;
436 struct llog_ctxt *ctxt = llog_get_context(obd, LLOG_CONFIG_ORIG_CTXT);
438 if (ctxt == NULL || mds == NULL)
441 count = mds->mds_lov_desc.ld_tgt_count;
442 size = sizeof(*idarray) * count;
444 OBD_ALLOC(idarray, size);
448 rc = llog_get_cat_list(obd, obd, name, count, idarray);
452 push_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_ctxt, NULL);
456 data.remains = buf_len;
457 for (i = 0; i < count; i++) {
458 int l, index, uncanceled = 0;
460 id = &idarray[i].lci_logid;
461 rc = llog_create(ctxt, &handle, id, NULL);
464 rc = llog_init_handle(handle, 0, NULL);
467 GOTO(out_pop, rc = -ENOENT);
469 for (index = 1; index < (LLOG_BITMAP_BYTES * 8); index++) {
470 if (ext2_test_bit(index, handle->lgh_hdr->llh_bitmap))
473 l = snprintf(data.out, data.remains,
474 "\n[Catlog ID]: #"LPX64"#"LPX64"#%08x "
476 id->lgl_oid, id->lgl_ogr, id->lgl_ogen,
483 llog_process(handle, llog_catinfo_cb, &data, NULL);
486 if (data.remains <= 0)
490 pop_ctxt(&saved, &ctxt->loc_exp->exp_obd->obd_ctxt, NULL);
492 OBD_FREE(idarray, size);
496 int llog_catinfo(struct ptlrpc_request *req)
498 struct obd_export *exp = req->rq_export;
499 struct obd_device *obd = exp->exp_obd;
502 int rc, buf_len = LLOG_CHUNK_SIZE;
504 OBD_ALLOC(buf, buf_len);
507 memset(buf, 0, buf_len);
509 keyword = lustre_msg_string(req->rq_reqmsg, 0, 0);
511 if (strcmp(keyword, "config") == 0) {
512 char *client = lustre_msg_string(req->rq_reqmsg, 1, 0);
513 rc = llog_catinfo_config(obd, buf, buf_len, client);
514 } else if (strcmp(keyword, "deletions") == 0) {
515 rc = llog_catinfo_deletions(obd, buf, buf_len);
520 rc = lustre_pack_reply(req, 1, &buf_len, NULL);
522 GOTO(out_free, rc = -ENOMEM);
524 reply = lustre_msg_buf(req->rq_repmsg, 0, buf_len);
525 if (strlen(buf) == 0)
526 sprintf(buf, "%s", "No log informations\n");
527 memcpy(reply, buf, buf_len);
530 OBD_FREE(buf, buf_len);
534 #else /* !__KERNEL__ */
535 int llog_origin_handle_create(struct ptlrpc_request *req)
540 int llog_origin_handle_next_block(struct ptlrpc_request *req)
545 int llog_origin_handle_read_header(struct ptlrpc_request *req)
550 int llog_origin_handle_close(struct ptlrpc_request *req)
555 int llog_origin_handle_cancel(struct ptlrpc_request *req)