From: "John L. Hammond" <john.hammond@xxxxxxxxx> llog_osd_ops is not used so remove it and its supporting methods. Signed-off-by: John L. Hammond <john.hammond@xxxxxxxxx> --- drivers/staging/lustre/lustre/include/lustre_log.h | 9 - drivers/staging/lustre/lustre/obdclass/Makefile | 2 +- drivers/staging/lustre/lustre/obdclass/llog_osd.c | 1290 -------------------- 3 files changed, 1 insertion(+), 1300 deletions(-) delete mode 100644 drivers/staging/lustre/lustre/obdclass/llog_osd.c diff --git a/drivers/staging/lustre/lustre/include/lustre_log.h b/drivers/staging/lustre/lustre/include/lustre_log.h index 3944c6d..ed97887 100644 --- a/drivers/staging/lustre/lustre/include/lustre_log.h +++ b/drivers/staging/lustre/lustre/include/lustre_log.h @@ -313,15 +313,6 @@ struct llog_handle { atomic_t lgh_refcount; }; -/* llog_osd.c */ -extern struct llog_operations llog_osd_ops; -int llog_osd_get_cat_list(const struct lu_env *env, struct dt_device *d, - int idx, int count, - struct llog_catid *idarray); -int llog_osd_put_cat_list(const struct lu_env *env, struct dt_device *d, - int idx, int count, - struct llog_catid *idarray); - #define LLOG_CTXT_FLAG_UNINITIALIZED 0x00000001 #define LLOG_CTXT_FLAG_STOP 0x00000002 diff --git a/drivers/staging/lustre/lustre/obdclass/Makefile b/drivers/staging/lustre/lustre/obdclass/Makefile index 9a2b83f..c8c95e1 100644 --- a/drivers/staging/lustre/lustre/obdclass/Makefile +++ b/drivers/staging/lustre/lustre/obdclass/Makefile @@ -3,7 +3,7 @@ obj-$(CONFIG_LUSTRE_FS) += obdclass.o obdclass-y := linux/linux-module.o linux/linux-obdo.o linux/linux-sysctl.o \ llog.o llog_cat.o llog_obd.o llog_swab.o class_obd.o debug.o \ genops.o uuid.o llog_ioctl.o lprocfs_status.o \ - lustre_handles.o lustre_peer.o llog_osd.o \ + lustre_handles.o lustre_peer.o \ local_storage.o statfs_pack.o obdo.o obd_config.o obd_mount.o\ lu_object.o dt_object.o capa.o cl_object.o \ cl_page.o cl_lock.o cl_io.o lu_ref.o acl.o diff --git a/drivers/staging/lustre/lustre/obdclass/llog_osd.c b/drivers/staging/lustre/lustre/obdclass/llog_osd.c deleted file mode 100644 index 2c6a51e..0000000 --- a/drivers/staging/lustre/lustre/obdclass/llog_osd.c +++ /dev/null @@ -1,1290 +0,0 @@ -/* - * GPL HEADER START - * - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 only, - * as published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License version 2 for more details (a copy is included - * in the LICENSE file that accompanied this code). - * - * You should have received a copy of the GNU General Public License - * version 2 along with this program; If not, see - * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf - * - * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, - * CA 95054 USA or visit www.sun.com if you need additional information or - * have any questions. - * - * GPL HEADER END - */ -/* - * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved. - * Use is subject to license terms. - * - * Copyright (c) 2012, Intel Corporation. - */ -/* - * This file is part of Lustre, http://www.lustre.org/ - * Lustre is a trademark of Sun Microsystems, Inc. - * - * lustre/obdclass/llog_osd.c - low level llog routines on top of OSD API - * - * Author: Alexey Zhuravlev <alexey.zhuravlev@xxxxxxxxx> - * Author: Mikhail Pershin <mike.pershin@xxxxxxxxx> - */ - -#define DEBUG_SUBSYSTEM S_LOG - -#include "../include/obd.h" -#include "../include/obd_class.h" -#include "../include/lustre_fid.h" -#include "../include/dt_object.h" - -#include "llog_internal.h" -#include "local_storage.h" - -/* - * - multi-chunks or big-declaration approach - * - use unique sequence instead of llog sb tracking unique ids - * - re-use existing environment - * - named llog support (can be used for testing only at the present) - * - llog_origin_connect() work with OSD API - */ - -static int llog_osd_declare_new_object(const struct lu_env *env, - struct local_oid_storage *los, - struct dt_object *o, - struct thandle *th) -{ - struct llog_thread_info *lgi = llog_info(env); - - lgi->lgi_attr.la_valid = LA_MODE; - lgi->lgi_attr.la_mode = S_IFREG | S_IRUGO | S_IWUSR; - lgi->lgi_dof.dof_type = dt_mode_to_dft(S_IFREG); - - return local_object_declare_create(env, los, o, &lgi->lgi_attr, - &lgi->lgi_dof, th); -} - -static int llog_osd_create_new_object(const struct lu_env *env, - struct local_oid_storage *los, - struct dt_object *o, - struct thandle *th) -{ - struct llog_thread_info *lgi = llog_info(env); - - lgi->lgi_attr.la_valid = LA_MODE; - lgi->lgi_attr.la_mode = S_IFREG | S_IRUGO | S_IWUSR; - lgi->lgi_dof.dof_type = dt_mode_to_dft(S_IFREG); - - return local_object_create(env, los, o, &lgi->lgi_attr, - &lgi->lgi_dof, th); -} - -static int llog_osd_pad(const struct lu_env *env, struct dt_object *o, - loff_t *off, int len, int index, struct thandle *th) -{ - struct llog_thread_info *lgi = llog_info(env); - int rc; - - LASSERT(th); - LASSERT(off); - LASSERT(len >= LLOG_MIN_REC_SIZE && (len & 0x7) == 0); - - lgi->lgi_tail.lrt_len = lgi->lgi_lrh.lrh_len = len; - lgi->lgi_tail.lrt_index = lgi->lgi_lrh.lrh_index = index; - lgi->lgi_lrh.lrh_type = LLOG_PAD_MAGIC; - - lgi->lgi_buf.lb_buf = &lgi->lgi_lrh; - lgi->lgi_buf.lb_len = sizeof(lgi->lgi_lrh); - dt_write_lock(env, o, 0); - rc = dt_record_write(env, o, &lgi->lgi_buf, off, th); - if (rc) { - CERROR("%s: error writing padding record: rc = %d\n", - o->do_lu.lo_dev->ld_obd->obd_name, rc); - GOTO(out, rc); - } - - lgi->lgi_buf.lb_buf = &lgi->lgi_tail; - lgi->lgi_buf.lb_len = sizeof(lgi->lgi_tail); - *off += len - sizeof(lgi->lgi_lrh) - sizeof(lgi->lgi_tail); - rc = dt_record_write(env, o, &lgi->lgi_buf, off, th); - if (rc) - CERROR("%s: error writing padding record: rc = %d\n", - o->do_lu.lo_dev->ld_obd->obd_name, rc); -out: - dt_write_unlock(env, o); - return rc; -} - -static int llog_osd_write_blob(const struct lu_env *env, struct dt_object *o, - struct llog_rec_hdr *rec, void *buf, - loff_t *off, struct thandle *th) -{ - struct llog_thread_info *lgi = llog_info(env); - int buflen = rec->lrh_len; - int rc; - - LASSERT(env); - LASSERT(o); - - if (buflen == 0) - CWARN("0-length record\n"); - - CDEBUG(D_OTHER, "write blob with type %x, buf %p/%u at off %llu\n", - rec->lrh_type, buf, buflen, *off); - - lgi->lgi_attr.la_valid = LA_SIZE; - lgi->lgi_attr.la_size = *off; - - if (!buf) { - lgi->lgi_buf.lb_len = buflen; - lgi->lgi_buf.lb_buf = rec; - rc = dt_record_write(env, o, &lgi->lgi_buf, off, th); - if (rc) - CERROR("%s: error writing log record: rc = %d\n", - o->do_lu.lo_dev->ld_obd->obd_name, rc); - GOTO(out, rc); - } - - /* the buf case */ - /* protect the following 3 writes from concurrent read */ - dt_write_lock(env, o, 0); - rec->lrh_len = sizeof(*rec) + buflen + sizeof(lgi->lgi_tail); - lgi->lgi_buf.lb_len = sizeof(*rec); - lgi->lgi_buf.lb_buf = rec; - rc = dt_record_write(env, o, &lgi->lgi_buf, off, th); - if (rc) { - CERROR("%s: error writing log hdr: rc = %d\n", - o->do_lu.lo_dev->ld_obd->obd_name, rc); - GOTO(out_unlock, rc); - } - - lgi->lgi_buf.lb_len = buflen; - lgi->lgi_buf.lb_buf = buf; - rc = dt_record_write(env, o, &lgi->lgi_buf, off, th); - if (rc) { - CERROR("%s: error writing log buffer: rc = %d\n", - o->do_lu.lo_dev->ld_obd->obd_name, rc); - GOTO(out_unlock, rc); - } - - lgi->lgi_tail.lrt_len = rec->lrh_len; - lgi->lgi_tail.lrt_index = rec->lrh_index; - lgi->lgi_buf.lb_len = sizeof(lgi->lgi_tail); - lgi->lgi_buf.lb_buf = &lgi->lgi_tail; - rc = dt_record_write(env, o, &lgi->lgi_buf, off, th); - if (rc) - CERROR("%s: error writing log tail: rc = %d\n", - o->do_lu.lo_dev->ld_obd->obd_name, rc); - -out_unlock: - dt_write_unlock(env, o); - -out: - /* cleanup the content written above */ - if (rc) { - dt_punch(env, o, lgi->lgi_attr.la_size, OBD_OBJECT_EOF, th, - BYPASS_CAPA); - dt_attr_set(env, o, &lgi->lgi_attr, th, BYPASS_CAPA); - } - - return rc; -} - -static int llog_osd_read_header(const struct lu_env *env, - struct llog_handle *handle) -{ - struct llog_rec_hdr *llh_hdr; - struct dt_object *o; - struct llog_thread_info *lgi; - int rc; - - LASSERT(sizeof(*handle->lgh_hdr) == LLOG_CHUNK_SIZE); - - o = handle->lgh_obj; - LASSERT(o); - - lgi = llog_info(env); - - rc = dt_attr_get(env, o, &lgi->lgi_attr, NULL); - if (rc) - return rc; - - LASSERT(lgi->lgi_attr.la_valid & LA_SIZE); - - if (lgi->lgi_attr.la_size == 0) { - CDEBUG(D_HA, "not reading header from 0-byte log\n"); - return LLOG_EEMPTY; - } - - lgi->lgi_off = 0; - lgi->lgi_buf.lb_buf = handle->lgh_hdr; - lgi->lgi_buf.lb_len = LLOG_CHUNK_SIZE; - - rc = dt_record_read(env, o, &lgi->lgi_buf, &lgi->lgi_off); - if (rc) { - CERROR("%s: error reading log header from "DFID": rc = %d\n", - o->do_lu.lo_dev->ld_obd->obd_name, - PFID(lu_object_fid(&o->do_lu)), rc); - return rc; - } - - llh_hdr = &handle->lgh_hdr->llh_hdr; - if (LLOG_REC_HDR_NEEDS_SWABBING(llh_hdr)) - lustre_swab_llog_hdr(handle->lgh_hdr); - - if (llh_hdr->lrh_type != LLOG_HDR_MAGIC) { - CERROR("%s: bad log %s "DFID" header magic: %#x " - "(expected %#x)\n", o->do_lu.lo_dev->ld_obd->obd_name, - handle->lgh_name ? handle->lgh_name : "", - PFID(lu_object_fid(&o->do_lu)), - llh_hdr->lrh_type, LLOG_HDR_MAGIC); - return -EIO; - } else if (llh_hdr->lrh_len != LLOG_CHUNK_SIZE) { - CERROR("%s: incorrectly sized log %s "DFID" header: " - "%#x (expected %#x)\n" - "you may need to re-run lconf --write_conf.\n", - o->do_lu.lo_dev->ld_obd->obd_name, - handle->lgh_name ? handle->lgh_name : "", - PFID(lu_object_fid(&o->do_lu)), - llh_hdr->lrh_len, LLOG_CHUNK_SIZE); - return -EIO; - } - - handle->lgh_last_idx = handle->lgh_hdr->llh_tail.lrt_index; - - return 0; -} - -static int llog_osd_declare_write_rec(const struct lu_env *env, - struct llog_handle *loghandle, - struct llog_rec_hdr *rec, - int idx, struct thandle *th) -{ - struct llog_thread_info *lgi = llog_info(env); - struct dt_object *o; - int rc; - - LASSERT(env); - LASSERT(th); - LASSERT(loghandle); - - o = loghandle->lgh_obj; - LASSERT(o); - - /* each time we update header */ - rc = dt_declare_record_write(env, o, sizeof(struct llog_log_hdr), 0, - th); - if (rc || idx == 0) /* if error or just header */ - return rc; - - if (dt_object_exists(o)) { - rc = dt_attr_get(env, o, &lgi->lgi_attr, BYPASS_CAPA); - lgi->lgi_off = lgi->lgi_attr.la_size; - LASSERT(ergo(rc == 0, lgi->lgi_attr.la_valid & LA_SIZE)); - if (rc) - return rc; - - rc = dt_declare_punch(env, o, lgi->lgi_off, OBD_OBJECT_EOF, th); - if (rc) - return rc; - } else { - lgi->lgi_off = 0; - } - - /* XXX: implement declared window or multi-chunks approach */ - rc = dt_declare_record_write(env, o, 32 * 1024, lgi->lgi_off, th); - - return rc; -} - -/* returns negative in on error; 0 if success && reccookie == 0; 1 otherwise */ -/* appends if idx == -1, otherwise overwrites record idx. */ -static int llog_osd_write_rec(const struct lu_env *env, - struct llog_handle *loghandle, - struct llog_rec_hdr *rec, - struct llog_cookie *reccookie, int cookiecount, - void *buf, int idx, struct thandle *th) -{ - struct llog_thread_info *lgi = llog_info(env); - struct llog_log_hdr *llh; - int reclen = rec->lrh_len; - int index, rc, old_tail_idx; - struct llog_rec_tail *lrt; - struct dt_object *o; - size_t left; - - LASSERT(env); - llh = loghandle->lgh_hdr; - LASSERT(llh); - o = loghandle->lgh_obj; - LASSERT(o); - LASSERT(th); - - CDEBUG(D_OTHER, "new record %x to "DFID"\n", - rec->lrh_type, PFID(lu_object_fid(&o->do_lu))); - - /* record length should not bigger than LLOG_CHUNK_SIZE */ - if (buf) - rc = (reclen > LLOG_CHUNK_SIZE - sizeof(struct llog_rec_hdr) - - sizeof(struct llog_rec_tail)) ? -E2BIG : 0; - else - rc = (reclen > LLOG_CHUNK_SIZE) ? -E2BIG : 0; - if (rc) - return rc; - - rc = dt_attr_get(env, o, &lgi->lgi_attr, NULL); - if (rc) - return rc; - - if (buf) - /* write_blob adds header and tail to lrh_len. */ - reclen = sizeof(*rec) + rec->lrh_len + - sizeof(struct llog_rec_tail); - - if (idx != -1) { - /* no header: only allowed to insert record 1 */ - if (idx != 1 && lgi->lgi_attr.la_size == 0) - LBUG(); - - if (idx && llh->llh_size && llh->llh_size != rec->lrh_len) - return -EINVAL; - - if (!ext2_test_bit(idx, llh->llh_bitmap)) - CERROR("%s: modify unset record %u\n", - o->do_lu.lo_dev->ld_obd->obd_name, idx); - if (idx != rec->lrh_index) - CERROR("%s: index mismatch %d %u\n", - o->do_lu.lo_dev->ld_obd->obd_name, idx, - rec->lrh_index); - - lgi->lgi_off = 0; - rc = llog_osd_write_blob(env, o, &llh->llh_hdr, NULL, - &lgi->lgi_off, th); - /* we are done if we only write the header or on error */ - if (rc || idx == 0) - return rc; - - if (buf) { - /* We assume that caller has set lgh_cur_* */ - lgi->lgi_off = loghandle->lgh_cur_offset; - CDEBUG(D_OTHER, - "modify record "DOSTID": idx:%d/%u/%d, len:%u " - "offset %llu\n", - POSTID(&loghandle->lgh_id.lgl_oi), idx, - rec->lrh_index, - loghandle->lgh_cur_idx, rec->lrh_len, - (long long)(lgi->lgi_off - sizeof(*llh))); - if (rec->lrh_index != loghandle->lgh_cur_idx) { - CERROR("%s: modify idx mismatch %u/%d\n", - o->do_lu.lo_dev->ld_obd->obd_name, idx, - loghandle->lgh_cur_idx); - return -EFAULT; - } - } else { - /* Assumes constant lrh_len */ - lgi->lgi_off = sizeof(*llh) + (idx - 1) * reclen; - } - - rc = llog_osd_write_blob(env, o, rec, buf, &lgi->lgi_off, th); - if (rc == 0 && reccookie) { - reccookie->lgc_lgl = loghandle->lgh_id; - reccookie->lgc_index = idx; - rc = 1; - } - return rc; - } - - /* Make sure that records don't cross a chunk boundary, so we can - * process them page-at-a-time if needed. If it will cross a chunk - * boundary, write in a fake (but referenced) entry to pad the chunk. - * - * We know that llog_current_log() will return a loghandle that is - * big enough to hold reclen, so all we care about is padding here. - */ - LASSERT(lgi->lgi_attr.la_valid & LA_SIZE); - lgi->lgi_off = lgi->lgi_attr.la_size; - left = LLOG_CHUNK_SIZE - (lgi->lgi_off & (LLOG_CHUNK_SIZE - 1)); - /* NOTE: padding is a record, but no bit is set */ - if (left != 0 && left != reclen && - left < (reclen + LLOG_MIN_REC_SIZE)) { - index = loghandle->lgh_last_idx + 1; - rc = llog_osd_pad(env, o, &lgi->lgi_off, left, index, th); - if (rc) - return rc; - loghandle->lgh_last_idx++; /*for pad rec*/ - } - /* if it's the last idx in log file, then return -ENOSPC */ - if (loghandle->lgh_last_idx >= LLOG_BITMAP_SIZE(llh) - 1) - return -ENOSPC; - - loghandle->lgh_last_idx++; - index = loghandle->lgh_last_idx; - LASSERT(index < LLOG_BITMAP_SIZE(llh)); - rec->lrh_index = index; - if (buf == NULL) { - lrt = (struct llog_rec_tail *)((char *)rec + rec->lrh_len - - sizeof(*lrt)); - lrt->lrt_len = rec->lrh_len; - lrt->lrt_index = rec->lrh_index; - } - /* The caller should make sure only 1 process access the lgh_last_idx, - * Otherwise it might hit the assert.*/ - LASSERT(index < LLOG_BITMAP_SIZE(llh)); - spin_lock(&loghandle->lgh_hdr_lock); - if (ext2_set_bit(index, llh->llh_bitmap)) { - CERROR("%s: index %u already set in log bitmap\n", - o->do_lu.lo_dev->ld_obd->obd_name, index); - spin_unlock(&loghandle->lgh_hdr_lock); - LBUG(); /* should never happen */ - } - llh->llh_count++; - spin_unlock(&loghandle->lgh_hdr_lock); - old_tail_idx = llh->llh_tail.lrt_index; - llh->llh_tail.lrt_index = index; - - lgi->lgi_off = 0; - rc = llog_osd_write_blob(env, o, &llh->llh_hdr, NULL, &lgi->lgi_off, - th); - if (rc) - GOTO(out, rc); - - rc = dt_attr_get(env, o, &lgi->lgi_attr, NULL); - if (rc) - GOTO(out, rc); - - LASSERT(lgi->lgi_attr.la_valid & LA_SIZE); - lgi->lgi_off = lgi->lgi_attr.la_size; - - rc = llog_osd_write_blob(env, o, rec, buf, &lgi->lgi_off, th); - -out: - /* cleanup llog for error case */ - if (rc) { - spin_lock(&loghandle->lgh_hdr_lock); - ext2_clear_bit(index, llh->llh_bitmap); - llh->llh_count--; - spin_unlock(&loghandle->lgh_hdr_lock); - - /* restore the header */ - loghandle->lgh_last_idx--; - llh->llh_tail.lrt_index = old_tail_idx; - lgi->lgi_off = 0; - llog_osd_write_blob(env, o, &llh->llh_hdr, NULL, - &lgi->lgi_off, th); - } - - CDEBUG(D_RPCTRACE, "added record "DOSTID": idx: %u, %u\n", - POSTID(&loghandle->lgh_id.lgl_oi), index, rec->lrh_len); - if (rc == 0 && reccookie) { - reccookie->lgc_lgl = loghandle->lgh_id; - reccookie->lgc_index = index; - if ((rec->lrh_type == MDS_UNLINK_REC) || - (rec->lrh_type == MDS_SETATTR64_REC)) - reccookie->lgc_subsys = LLOG_MDS_OST_ORIG_CTXT; - else if (rec->lrh_type == OST_SZ_REC) - reccookie->lgc_subsys = LLOG_SIZE_ORIG_CTXT; - else - reccookie->lgc_subsys = -1; - rc = 1; - } - return rc; -} - -/* We can skip reading at least as many log blocks as the number of - * minimum sized log records we are skipping. If it turns out - * that we are not far enough along the log (because the - * actual records are larger than minimum size) we just skip - * some more records. - */ -static void llog_skip_over(__u64 *off, int curr, int goal) -{ - if (goal <= curr) - return; - *off = (*off + (goal - curr - 1) * LLOG_MIN_REC_SIZE) & - ~(LLOG_CHUNK_SIZE - 1); -} - -/* sets: - * - cur_offset to the furthest point read in the log file - * - cur_idx to the log index preceding cur_offset - * returns -EIO/-EINVAL on error - */ -static int llog_osd_next_block(const struct lu_env *env, - struct llog_handle *loghandle, int *cur_idx, - int next_idx, __u64 *cur_offset, void *buf, - int len) -{ - struct llog_thread_info *lgi = llog_info(env); - struct dt_object *o; - struct dt_device *dt; - int rc; - - LASSERT(env); - LASSERT(lgi); - - if (len == 0 || len & (LLOG_CHUNK_SIZE - 1)) - return -EINVAL; - - CDEBUG(D_OTHER, "looking for log index %u (cur idx %u off %llu)\n", - next_idx, *cur_idx, *cur_offset); - - LASSERT(loghandle); - LASSERT(loghandle->lgh_ctxt); - - o = loghandle->lgh_obj; - LASSERT(o); - LASSERT(dt_object_exists(o)); - dt = lu2dt_dev(o->do_lu.lo_dev); - LASSERT(dt); - - rc = dt_attr_get(env, o, &lgi->lgi_attr, BYPASS_CAPA); - if (rc) - GOTO(out, rc); - - while (*cur_offset < lgi->lgi_attr.la_size) { - struct llog_rec_hdr *rec, *last_rec; - struct llog_rec_tail *tail; - - llog_skip_over(cur_offset, *cur_idx, next_idx); - - /* read up to next LLOG_CHUNK_SIZE block */ - lgi->lgi_buf.lb_len = LLOG_CHUNK_SIZE - - (*cur_offset & (LLOG_CHUNK_SIZE - 1)); - lgi->lgi_buf.lb_buf = buf; - - /* Note: read lock is not needed around la_size get above at - * the time of dt_attr_get(). There are only two cases that - * matter. Either la_size == cur_offset, in which case the - * entire read is skipped, or la_size > cur_offset and the loop - * is entered and this thread is blocked at dt_read_lock() - * until the write is completed. When the write completes, then - * the dt_read() will be done with the full length, and will - * get the full data. - */ - dt_read_lock(env, o, 0); - rc = dt_read(env, o, &lgi->lgi_buf, cur_offset); - dt_read_unlock(env, o); - if (rc < 0) { - CERROR("%s: can't read llog block from log "DFID - " offset %llu: rc = %d\n", - o->do_lu.lo_dev->ld_obd->obd_name, - PFID(lu_object_fid(&o->do_lu)), *cur_offset, - rc); - GOTO(out, rc); - } - - if (rc < len) { - /* signal the end of the valid buffer to - * llog_process */ - memset(buf + rc, 0, len - rc); - } - - if (rc == 0) /* end of file, nothing to do */ - GOTO(out, rc); - - if (rc < sizeof(*tail)) { - CERROR("%s: invalid llog block at log id "DOSTID"/%u " - "offset %llu\n", - o->do_lu.lo_dev->ld_obd->obd_name, - POSTID(&loghandle->lgh_id.lgl_oi), - loghandle->lgh_id.lgl_ogen, *cur_offset); - GOTO(out, rc = -EINVAL); - } - - rec = buf; - if (LLOG_REC_HDR_NEEDS_SWABBING(rec)) - lustre_swab_llog_rec(rec); - - tail = (struct llog_rec_tail *)((char *)buf + rc - - sizeof(struct llog_rec_tail)); - /* get the last record in block */ - last_rec = (struct llog_rec_hdr *)((char *)buf + rc - - le32_to_cpu(tail->lrt_len)); - - if (LLOG_REC_HDR_NEEDS_SWABBING(last_rec)) - lustre_swab_llog_rec(last_rec); - LASSERT(last_rec->lrh_index == tail->lrt_index); - - *cur_idx = tail->lrt_index; - - /* this shouldn't happen */ - if (tail->lrt_index == 0) { - CERROR("%s: invalid llog tail at log id "DOSTID"/%u " - "offset %llu\n", - o->do_lu.lo_dev->ld_obd->obd_name, - POSTID(&loghandle->lgh_id.lgl_oi), - loghandle->lgh_id.lgl_ogen, *cur_offset); - GOTO(out, rc = -EINVAL); - } - if (tail->lrt_index < next_idx) - continue; - - /* sanity check that the start of the new buffer is no farther - * than the record that we wanted. This shouldn't happen. */ - if (rec->lrh_index > next_idx) { - CERROR("%s: missed desired record? %u > %u\n", - o->do_lu.lo_dev->ld_obd->obd_name, - rec->lrh_index, next_idx); - GOTO(out, rc = -ENOENT); - } - GOTO(out, rc = 0); - } - GOTO(out, rc = -EIO); -out: - return rc; -} - -static int llog_osd_prev_block(const struct lu_env *env, - struct llog_handle *loghandle, - int prev_idx, void *buf, int len) -{ - struct llog_thread_info *lgi = llog_info(env); - struct dt_object *o; - struct dt_device *dt; - loff_t cur_offset; - int rc; - - if (len == 0 || len & (LLOG_CHUNK_SIZE - 1)) - return -EINVAL; - - CDEBUG(D_OTHER, "looking for log index %u\n", prev_idx); - - LASSERT(loghandle); - LASSERT(loghandle->lgh_ctxt); - - o = loghandle->lgh_obj; - LASSERT(o); - LASSERT(dt_object_exists(o)); - dt = lu2dt_dev(o->do_lu.lo_dev); - LASSERT(dt); - - cur_offset = LLOG_CHUNK_SIZE; - llog_skip_over(&cur_offset, 0, prev_idx); - - rc = dt_attr_get(env, o, &lgi->lgi_attr, BYPASS_CAPA); - if (rc) - GOTO(out, rc); - - while (cur_offset < lgi->lgi_attr.la_size) { - struct llog_rec_hdr *rec, *last_rec; - struct llog_rec_tail *tail; - - lgi->lgi_buf.lb_len = len; - lgi->lgi_buf.lb_buf = buf; - /* It is OK to have locking around dt_read() only, see - * comment in llog_osd_next_block for details - */ - dt_read_lock(env, o, 0); - rc = dt_read(env, o, &lgi->lgi_buf, &cur_offset); - dt_read_unlock(env, o); - if (rc < 0) { - CERROR("%s: can't read llog block from log "DFID - " offset %llu: rc = %d\n", - o->do_lu.lo_dev->ld_obd->obd_name, - PFID(lu_object_fid(&o->do_lu)), cur_offset, rc); - GOTO(out, rc); - } - - if (rc == 0) /* end of file, nothing to do */ - GOTO(out, rc); - - if (rc < sizeof(*tail)) { - CERROR("%s: invalid llog block at log id "DOSTID"/%u " - "offset %llu\n", - o->do_lu.lo_dev->ld_obd->obd_name, - POSTID(&loghandle->lgh_id.lgl_oi), - loghandle->lgh_id.lgl_ogen, cur_offset); - GOTO(out, rc = -EINVAL); - } - - rec = buf; - if (LLOG_REC_HDR_NEEDS_SWABBING(rec)) - lustre_swab_llog_rec(rec); - - tail = (struct llog_rec_tail *)((char *)buf + rc - - sizeof(struct llog_rec_tail)); - /* get the last record in block */ - last_rec = (struct llog_rec_hdr *)((char *)buf + rc - - le32_to_cpu(tail->lrt_len)); - - if (LLOG_REC_HDR_NEEDS_SWABBING(last_rec)) - lustre_swab_llog_rec(last_rec); - LASSERT(last_rec->lrh_index == tail->lrt_index); - - /* this shouldn't happen */ - if (tail->lrt_index == 0) { - CERROR("%s: invalid llog tail at log id "DOSTID"/%u " - "offset %llu\n", - o->do_lu.lo_dev->ld_obd->obd_name, - POSTID(&loghandle->lgh_id.lgl_oi), - loghandle->lgh_id.lgl_ogen, cur_offset); - GOTO(out, rc = -EINVAL); - } - if (tail->lrt_index < prev_idx) - continue; - - /* sanity check that the start of the new buffer is no farther - * than the record that we wanted. This shouldn't happen. */ - if (rec->lrh_index > prev_idx) { - CERROR("%s: missed desired record? %u > %u\n", - o->do_lu.lo_dev->ld_obd->obd_name, - rec->lrh_index, prev_idx); - GOTO(out, rc = -ENOENT); - } - GOTO(out, rc = 0); - } - GOTO(out, rc = -EIO); -out: - return rc; -} - -struct dt_object *llog_osd_dir_get(const struct lu_env *env, - struct llog_ctxt *ctxt) -{ - struct dt_device *dt; - struct dt_thread_info *dti = dt_info(env); - struct dt_object *dir; - int rc; - - dt = ctxt->loc_exp->exp_obd->obd_lvfs_ctxt.dt; - if (ctxt->loc_dir == NULL) { - rc = dt_root_get(env, dt, &dti->dti_fid); - if (rc) - return ERR_PTR(rc); - dir = dt_locate(env, dt, &dti->dti_fid); - } else { - lu_object_get(&ctxt->loc_dir->do_lu); - dir = ctxt->loc_dir; - } - - return dir; -} - -static int llog_osd_open(const struct lu_env *env, struct llog_handle *handle, - struct llog_logid *logid, char *name, - enum llog_open_param open_param) -{ - struct llog_thread_info *lgi = llog_info(env); - struct llog_ctxt *ctxt = handle->lgh_ctxt; - struct dt_object *o; - struct dt_device *dt; - struct ls_device *ls; - struct local_oid_storage *los; - int rc = 0; - - LASSERT(env); - LASSERT(ctxt); - LASSERT(ctxt->loc_exp); - LASSERT(ctxt->loc_exp->exp_obd); - dt = ctxt->loc_exp->exp_obd->obd_lvfs_ctxt.dt; - LASSERT(dt); - - ls = ls_device_get(dt); - if (IS_ERR(ls)) - return PTR_ERR(ls); - - mutex_lock(&ls->ls_los_mutex); - los = dt_los_find(ls, name != NULL ? FID_SEQ_LLOG_NAME : FID_SEQ_LLOG); - mutex_unlock(&ls->ls_los_mutex); - LASSERT(los); - ls_device_put(env, ls); - - LASSERT(handle); - - if (logid != NULL) { - logid_to_fid(logid, &lgi->lgi_fid); - } else if (name) { - struct dt_object *llog_dir; - - llog_dir = llog_osd_dir_get(env, ctxt); - if (IS_ERR(llog_dir)) - GOTO(out, rc = PTR_ERR(llog_dir)); - dt_read_lock(env, llog_dir, 0); - rc = dt_lookup_dir(env, llog_dir, name, &lgi->lgi_fid); - dt_read_unlock(env, llog_dir); - lu_object_put(env, &llog_dir->do_lu); - if (rc == -ENOENT && open_param == LLOG_OPEN_NEW) { - /* generate fid for new llog */ - rc = local_object_fid_generate(env, los, - &lgi->lgi_fid); - } - if (rc < 0) - GOTO(out, rc); - OBD_ALLOC(handle->lgh_name, strlen(name) + 1); - if (handle->lgh_name) - strcpy(handle->lgh_name, name); - else - GOTO(out, rc = -ENOMEM); - } else { - LASSERTF(open_param & LLOG_OPEN_NEW, "%#x\n", open_param); - /* generate fid for new llog */ - rc = local_object_fid_generate(env, los, &lgi->lgi_fid); - if (rc < 0) - GOTO(out, rc); - } - - o = ls_locate(env, ls, &lgi->lgi_fid); - if (IS_ERR(o)) - GOTO(out_name, rc = PTR_ERR(o)); - - /* No new llog is expected but doesn't exist */ - if (open_param != LLOG_OPEN_NEW && !dt_object_exists(o)) - GOTO(out_put, rc = -ENOENT); - - fid_to_logid(&lgi->lgi_fid, &handle->lgh_id); - handle->lgh_obj = o; - handle->private_data = los; - LASSERT(handle->lgh_ctxt); - - return rc; - -out_put: - lu_object_put(env, &o->do_lu); -out_name: - if (handle->lgh_name != NULL) - OBD_FREE(handle->lgh_name, strlen(name) + 1); -out: - dt_los_put(los); - return rc; -} - -static int llog_osd_exist(struct llog_handle *handle) -{ - LASSERT(handle->lgh_obj); - return (dt_object_exists(handle->lgh_obj) && - !lu_object_is_dying(handle->lgh_obj->do_lu.lo_header)); -} - -static int llog_osd_declare_create(const struct lu_env *env, - struct llog_handle *res, struct thandle *th) -{ - struct llog_thread_info *lgi = llog_info(env); - struct local_oid_storage *los; - struct dt_object *o; - int rc; - - LASSERT(res->lgh_obj); - LASSERT(th); - - /* object can be created by another thread */ - o = res->lgh_obj; - if (dt_object_exists(o)) - return 0; - - los = res->private_data; - LASSERT(los); - - rc = llog_osd_declare_new_object(env, los, o, th); - if (rc) - return rc; - - rc = dt_declare_record_write(env, o, LLOG_CHUNK_SIZE, 0, th); - if (rc) - return rc; - - if (res->lgh_name) { - struct dt_object *llog_dir; - - llog_dir = llog_osd_dir_get(env, res->lgh_ctxt); - if (IS_ERR(llog_dir)) - return PTR_ERR(llog_dir); - logid_to_fid(&res->lgh_id, &lgi->lgi_fid); - rc = dt_declare_insert(env, llog_dir, - (struct dt_rec *)&lgi->lgi_fid, - (struct dt_key *)res->lgh_name, th); - lu_object_put(env, &llog_dir->do_lu); - if (rc) - CERROR("%s: can't declare named llog %s: rc = %d\n", - o->do_lu.lo_dev->ld_obd->obd_name, - res->lgh_name, rc); - } - return rc; -} - -/* This is a callback from the llog_* functions. - * Assumes caller has already pushed us into the kernel context. */ -static int llog_osd_create(const struct lu_env *env, struct llog_handle *res, - struct thandle *th) -{ - struct llog_thread_info *lgi = llog_info(env); - struct local_oid_storage *los; - struct dt_object *o; - int rc = 0; - - LASSERT(env); - o = res->lgh_obj; - LASSERT(o); - - /* llog can be already created */ - if (dt_object_exists(o)) - return -EEXIST; - - los = res->private_data; - LASSERT(los); - - dt_write_lock(env, o, 0); - if (!dt_object_exists(o)) - rc = llog_osd_create_new_object(env, los, o, th); - else - rc = -EEXIST; - - dt_write_unlock(env, o); - if (rc) - return rc; - - if (res->lgh_name) { - struct dt_object *llog_dir; - - llog_dir = llog_osd_dir_get(env, res->lgh_ctxt); - if (IS_ERR(llog_dir)) - return PTR_ERR(llog_dir); - - logid_to_fid(&res->lgh_id, &lgi->lgi_fid); - dt_read_lock(env, llog_dir, 0); - rc = dt_insert(env, llog_dir, - (struct dt_rec *)&lgi->lgi_fid, - (struct dt_key *)res->lgh_name, - th, BYPASS_CAPA, 1); - dt_read_unlock(env, llog_dir); - lu_object_put(env, &llog_dir->do_lu); - if (rc) - CERROR("%s: can't create named llog %s: rc = %d\n", - o->do_lu.lo_dev->ld_obd->obd_name, - res->lgh_name, rc); - } - return rc; -} - -static int llog_osd_close(const struct lu_env *env, struct llog_handle *handle) -{ - struct local_oid_storage *los; - int rc = 0; - - LASSERT(handle->lgh_obj); - - lu_object_put(env, &handle->lgh_obj->do_lu); - - los = handle->private_data; - LASSERT(los); - dt_los_put(los); - - if (handle->lgh_name) - OBD_FREE(handle->lgh_name, strlen(handle->lgh_name) + 1); - - return rc; -} - -static int llog_osd_destroy(const struct lu_env *env, - struct llog_handle *loghandle) -{ - struct llog_ctxt *ctxt; - struct dt_object *o, *llog_dir = NULL; - struct dt_device *d; - struct thandle *th; - char *name = NULL; - int rc; - - ctxt = loghandle->lgh_ctxt; - LASSERT(ctxt); - - o = loghandle->lgh_obj; - LASSERT(o); - - d = lu2dt_dev(o->do_lu.lo_dev); - LASSERT(d); - LASSERT(d == ctxt->loc_exp->exp_obd->obd_lvfs_ctxt.dt); - - th = dt_trans_create(env, d); - if (IS_ERR(th)) - return PTR_ERR(th); - - if (loghandle->lgh_name) { - llog_dir = llog_osd_dir_get(env, ctxt); - if (IS_ERR(llog_dir)) - GOTO(out_trans, rc = PTR_ERR(llog_dir)); - - name = loghandle->lgh_name; - rc = dt_declare_delete(env, llog_dir, - (struct dt_key *)name, th); - if (rc) - GOTO(out_trans, rc); - } - - dt_declare_ref_del(env, o, th); - - rc = dt_declare_destroy(env, o, th); - if (rc) - GOTO(out_trans, rc); - - rc = dt_trans_start_local(env, d, th); - if (rc) - GOTO(out_trans, rc); - - dt_write_lock(env, o, 0); - if (dt_object_exists(o)) { - if (name) { - dt_read_lock(env, llog_dir, 0); - rc = dt_delete(env, llog_dir, - (struct dt_key *) name, - th, BYPASS_CAPA); - dt_read_unlock(env, llog_dir); - if (rc) { - CERROR("%s: can't remove llog %s: rc = %d\n", - o->do_lu.lo_dev->ld_obd->obd_name, - name, rc); - GOTO(out_unlock, rc); - } - } - dt_ref_del(env, o, th); - rc = dt_destroy(env, o, th); - if (rc) - GOTO(out_unlock, rc); - } -out_unlock: - dt_write_unlock(env, o); -out_trans: - dt_trans_stop(env, d, th); - if (llog_dir != NULL) - lu_object_put(env, &llog_dir->do_lu); - return rc; -} - -static int llog_osd_setup(const struct lu_env *env, struct obd_device *obd, - struct obd_llog_group *olg, int ctxt_idx, - struct obd_device *disk_obd) -{ - struct local_oid_storage *los; - struct llog_thread_info *lgi = llog_info(env); - struct llog_ctxt *ctxt; - int rc = 0; - - LASSERT(obd); - LASSERT(olg->olg_ctxts[ctxt_idx]); - - ctxt = llog_ctxt_get(olg->olg_ctxts[ctxt_idx]); - LASSERT(ctxt); - - /* initialize data allowing to generate new fids, - * literally we need a sequence */ - lgi->lgi_fid.f_seq = FID_SEQ_LLOG; - lgi->lgi_fid.f_oid = 1; - lgi->lgi_fid.f_ver = 0; - rc = local_oid_storage_init(env, disk_obd->obd_lvfs_ctxt.dt, - &lgi->lgi_fid, &los); - if (rc < 0) - return rc; - - lgi->lgi_fid.f_seq = FID_SEQ_LLOG_NAME; - lgi->lgi_fid.f_oid = 1; - lgi->lgi_fid.f_ver = 0; - rc = local_oid_storage_init(env, disk_obd->obd_lvfs_ctxt.dt, - &lgi->lgi_fid, &los); - llog_ctxt_put(ctxt); - return rc; -} - -static int llog_osd_cleanup(const struct lu_env *env, struct llog_ctxt *ctxt) -{ - struct dt_device *dt; - struct ls_device *ls; - struct local_oid_storage *los, *nlos; - - LASSERT(ctxt->loc_exp->exp_obd); - dt = ctxt->loc_exp->exp_obd->obd_lvfs_ctxt.dt; - ls = ls_device_get(dt); - if (IS_ERR(ls)) - return PTR_ERR(ls); - - mutex_lock(&ls->ls_los_mutex); - los = dt_los_find(ls, FID_SEQ_LLOG); - nlos = dt_los_find(ls, FID_SEQ_LLOG_NAME); - mutex_unlock(&ls->ls_los_mutex); - if (los != NULL) { - dt_los_put(los); - local_oid_storage_fini(env, los); - } - if (nlos != NULL) { - dt_los_put(nlos); - local_oid_storage_fini(env, nlos); - } - ls_device_put(env, ls); - return 0; -} - -struct llog_operations llog_osd_ops = { - .lop_next_block = llog_osd_next_block, - .lop_prev_block = llog_osd_prev_block, - .lop_read_header = llog_osd_read_header, - .lop_destroy = llog_osd_destroy, - .lop_setup = llog_osd_setup, - .lop_cleanup = llog_osd_cleanup, - .lop_open = llog_osd_open, - .lop_exist = llog_osd_exist, - .lop_declare_create = llog_osd_declare_create, - .lop_create = llog_osd_create, - .lop_declare_write_rec = llog_osd_declare_write_rec, - .lop_write_rec = llog_osd_write_rec, - .lop_close = llog_osd_close, -}; -EXPORT_SYMBOL(llog_osd_ops); - -/* reads the catalog list */ -int llog_osd_get_cat_list(const struct lu_env *env, struct dt_device *d, - int idx, int count, struct llog_catid *idarray) -{ - struct llog_thread_info *lgi = llog_info(env); - struct dt_object *o = NULL; - struct thandle *th; - int rc, size; - - LASSERT(d); - - size = sizeof(*idarray) * count; - lgi->lgi_off = idx * sizeof(*idarray); - - lu_local_obj_fid(&lgi->lgi_fid, LLOG_CATALOGS_OID); - - o = dt_locate(env, d, &lgi->lgi_fid); - if (IS_ERR(o)) - return PTR_ERR(o); - - if (!dt_object_exists(o)) { - th = dt_trans_create(env, d); - if (IS_ERR(th)) - GOTO(out, rc = PTR_ERR(th)); - - lgi->lgi_attr.la_valid = LA_MODE; - lgi->lgi_attr.la_mode = S_IFREG | S_IRUGO | S_IWUSR; - lgi->lgi_dof.dof_type = dt_mode_to_dft(S_IFREG); - - rc = dt_declare_create(env, o, &lgi->lgi_attr, NULL, - &lgi->lgi_dof, th); - if (rc) - GOTO(out_trans, rc); - - rc = dt_trans_start_local(env, d, th); - if (rc) - GOTO(out_trans, rc); - - dt_write_lock(env, o, 0); - if (!dt_object_exists(o)) - rc = dt_create(env, o, &lgi->lgi_attr, NULL, - &lgi->lgi_dof, th); - dt_write_unlock(env, o); -out_trans: - dt_trans_stop(env, d, th); - if (rc) - GOTO(out, rc); - } - - rc = dt_attr_get(env, o, &lgi->lgi_attr, BYPASS_CAPA); - if (rc) - GOTO(out, rc); - - if (!S_ISREG(lgi->lgi_attr.la_mode)) { - CERROR("%s: CATALOGS is not a regular file!: mode = %o\n", - o->do_lu.lo_dev->ld_obd->obd_name, - lgi->lgi_attr.la_mode); - GOTO(out, rc = -ENOENT); - } - - CDEBUG(D_CONFIG, "cat list: disk size=%d, read=%d\n", - (int)lgi->lgi_attr.la_size, size); - - /* return just number of llogs */ - if (idarray == NULL) { - rc = lgi->lgi_attr.la_size / sizeof(*idarray); - GOTO(out, rc); - } - - /* read for new ost index or for empty file */ - memset(idarray, 0, size); - if (lgi->lgi_attr.la_size < lgi->lgi_off + size) - GOTO(out, rc = 0); - if (lgi->lgi_attr.la_size < lgi->lgi_off + size) - size = lgi->lgi_attr.la_size - lgi->lgi_off; - - lgi->lgi_buf.lb_buf = idarray; - lgi->lgi_buf.lb_len = size; - rc = dt_record_read(env, o, &lgi->lgi_buf, &lgi->lgi_off); - if (rc) { - CERROR("%s: error reading CATALOGS: rc = %d\n", - o->do_lu.lo_dev->ld_obd->obd_name, rc); - GOTO(out, rc); - } - -out: - lu_object_put(env, &o->do_lu); - return rc; -} -EXPORT_SYMBOL(llog_osd_get_cat_list); - -/* writes the cat list */ -int llog_osd_put_cat_list(const struct lu_env *env, struct dt_device *d, - int idx, int count, struct llog_catid *idarray) -{ - struct llog_thread_info *lgi = llog_info(env); - struct dt_object *o = NULL; - struct thandle *th; - int rc, size; - - if (!count) - return 0; - - LASSERT(d); - - size = sizeof(*idarray) * count; - lgi->lgi_off = idx * sizeof(*idarray); - - lu_local_obj_fid(&lgi->lgi_fid, LLOG_CATALOGS_OID); - - o = dt_locate(env, d, &lgi->lgi_fid); - if (IS_ERR(o)) - return PTR_ERR(o); - - if (!dt_object_exists(o)) - GOTO(out, rc = -ENOENT); - - rc = dt_attr_get(env, o, &lgi->lgi_attr, BYPASS_CAPA); - if (rc) - GOTO(out, rc); - - if (!S_ISREG(lgi->lgi_attr.la_mode)) { - CERROR("%s: CATALOGS is not a regular file!: mode = %o\n", - o->do_lu.lo_dev->ld_obd->obd_name, - lgi->lgi_attr.la_mode); - GOTO(out, rc = -ENOENT); - } - - th = dt_trans_create(env, d); - if (IS_ERR(th)) - GOTO(out, rc = PTR_ERR(th)); - - rc = dt_declare_record_write(env, o, size, lgi->lgi_off, th); - if (rc) - GOTO(out, rc); - - rc = dt_trans_start_local(env, d, th); - if (rc) - GOTO(out_trans, rc); - - lgi->lgi_buf.lb_buf = idarray; - lgi->lgi_buf.lb_len = size; - rc = dt_record_write(env, o, &lgi->lgi_buf, &lgi->lgi_off, th); - if (rc) - CDEBUG(D_INODE, "error writing CATALOGS: rc = %d\n", rc); -out_trans: - dt_trans_stop(env, d, th); -out: - lu_object_put(env, &o->do_lu); - return rc; -} -EXPORT_SYMBOL(llog_osd_put_cat_list); -- 1.9.3 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel