-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * GPL HEADER START
*
- * Copyright (C) 2001-2003 Cluster File Systems, Inc.
- * Author: Andreas Dilger <adilger@clusterfs.com>
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * This file is part of Lustre, http://www.lustre.org.
+ * 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.
*
- * Lustre is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License 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).
*
- * Lustre 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 for more details.
+ * 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
*
- * You should have received a copy of the GNU General Public License
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * 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.
*
- * OST<->MDS recovery logging infrastructure.
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
*
+ * lustre/obdclass/llog_lvfs.c
+ *
+ * OST<->MDS recovery logging infrastructure.
* Invariants in implementation:
* - we do not share logs among different OST<->MDS connections, so that
* if an OST or MDS fails it need only look at log(s) relevant to itself
+ *
+ * Author: Andreas Dilger <adilger@clusterfs.com>
*/
#define DEBUG_SUBSYSTEM S_LOG
-#ifndef EXPORT_SYMTAB
-#define EXPORT_SYMTAB
-#endif
-
-#ifdef __KERNEL__
-#include <linux/fs.h>
-#else
+#ifndef __KERNEL__
#include <liblustre.h>
#endif
-#include <linux/obd.h>
-#include <linux/obd_class.h>
-#include <linux/lustre_log.h>
-#include <linux/obd_ost.h>
-#include <portals/list.h>
-#include <linux/lvfs.h>
-#include <linux/lustre_fsfilt.h>
+#include <obd.h>
+#include <obd_class.h>
+#include <lustre_log.h>
+#include <obd_ost.h>
+#include <libcfs/list.h>
+#include <lvfs.h>
+#include <lustre_fsfilt.h>
+#include <lustre_disk.h>
#include "llog_internal.h"
-#ifdef __KERNEL__
+#if defined(__KERNEL__) && defined(LLOG_LVFS)
static int llog_lvfs_pad(struct obd_device *obd, struct l_file *file,
int len, int index)
tail.lrt_len = rec.lrh_len = len;
tail.lrt_index = rec.lrh_index = index;
- rec.lrh_type = 0;
+ rec.lrh_type = LLOG_PAD_MAGIC;
rc = fsfilt_write_record(obd, file, &rec, sizeof(rec), &file->f_pos, 0);
if (rc) {
int buflen = rec->lrh_len;
ENTRY;
+
file->f_pos = off;
+ if (buflen == 0)
+ CWARN("0-length record\n");
+
if (!buf) {
rc = fsfilt_write_record(obd, file, rec, buflen,&file->f_pos,0);
if (rc) {
RETURN(0);
}
-static int llog_lvfs_read_header(struct llog_handle *handle)
+static int llog_lvfs_read_header(const struct lu_env *env,
+ struct llog_handle *handle)
{
struct obd_device *obd;
int rc;
obd = handle->lgh_ctxt->loc_exp->exp_obd;
- if (handle->lgh_file->f_dentry->d_inode->i_size == 0) {
+ if (i_size_read(handle->lgh_file->f_dentry->d_inode) == 0) {
CDEBUG(D_HA, "not reading header from 0-byte log\n");
RETURN(LLOG_EEMPTY);
}
rc = llog_lvfs_read_blob(obd, handle->lgh_file, handle->lgh_hdr,
LLOG_CHUNK_SIZE, 0);
if (rc) {
- CERROR("error reading log header from %*s\n",
+ CERROR("error reading log header from %.*s\n",
handle->lgh_file->f_dentry->d_name.len,
handle->lgh_file->f_dentry->d_name.name);
} else {
struct llog_rec_hdr *llh_hdr = &handle->lgh_hdr->llh_hdr;
- /*
- * These need to be fixed for bug 1987
- */
+
+ if (LLOG_REC_HDR_NEEDS_SWABBING(llh_hdr))
+ lustre_swab_llog_hdr(handle->lgh_hdr);
+
if (llh_hdr->lrh_type != LLOG_HDR_MAGIC) {
- CERROR("bad log %*s header magic: %#x (expected %#x)\n",
+ CERROR("bad log %.*s header magic: %#x (expected %#x)\n",
handle->lgh_file->f_dentry->d_name.len,
handle->lgh_file->f_dentry->d_name.name,
llh_hdr->lrh_type, LLOG_HDR_MAGIC);
rc = -EIO;
} else if (llh_hdr->lrh_len != LLOG_CHUNK_SIZE) {
- CERROR("incorrectly sized log %*s header: %#x "
+ CERROR("incorrectly sized log %.*s header: %#x "
"(expected %#x)\n",
handle->lgh_file->f_dentry->d_name.len,
handle->lgh_file->f_dentry->d_name.name,
}
handle->lgh_last_idx = handle->lgh_hdr->llh_tail.lrt_index;
- handle->lgh_file->f_pos = handle->lgh_file->f_dentry->d_inode->i_size;
+ handle->lgh_file->f_pos = i_size_read(handle->lgh_file->f_dentry->d_inode);
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_lvfs_write_rec(struct llog_handle *loghandle,
- struct llog_rec_hdr *rec,
- struct llog_cookie *reccookie, int cookiecount,
- void *buf, int idx)
+static int llog_lvfs_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 llog_log_hdr *llh;
int reclen = rec->lrh_len, index, rc;
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) {
loff_t saved_offset;
/* no header: only allowed to insert record 1 */
- if (idx != 1 && !file->f_dentry->d_inode->i_size) {
+ if (idx != 1 && !i_size_read(file->f_dentry->d_inode)) {
CERROR("idx != -1 in empty log\n");
LBUG();
}
- if (idx && llh->llh_size && llh->llh_size != reclen)
+ if (idx && llh->llh_size && llh->llh_size != rec->lrh_len)
RETURN(-EINVAL);
+ if (!ext2_test_bit(idx, llh->llh_bitmap))
+ CERROR("Modify unset record %u\n", idx);
+ if (idx != rec->lrh_index)
+ CERROR("Index mismatch %d %u\n", idx, rec->lrh_index);
+
rc = llog_lvfs_write_blob(obd, file, &llh->llh_hdr, NULL, 0);
/* we are done if we only write the header or on error */
if (rc || idx == 0)
RETURN(rc);
- saved_offset = sizeof(*llh) + (idx-1)*rec->lrh_len;
+ /* Assumes constant lrh_len */
+ saved_offset = sizeof(*llh) + (idx - 1) * reclen;
+
+ if (buf) {
+ struct llog_rec_hdr check;
+
+ /* We assume that caller has set lgh_cur_* */
+ saved_offset = loghandle->lgh_cur_offset;
+ CDEBUG(D_OTHER,
+ "modify record "LPX64": idx:%d/%u/%d, len:%u "
+ "offset %llu\n",
+ loghandle->lgh_id.lgl_oid, idx, rec->lrh_index,
+ loghandle->lgh_cur_idx, rec->lrh_len,
+ (long long)(saved_offset - sizeof(*llh)));
+ if (rec->lrh_index != loghandle->lgh_cur_idx) {
+ CERROR("modify idx mismatch %u/%d\n",
+ idx, loghandle->lgh_cur_idx);
+ RETURN(-EFAULT);
+ }
+#if 1 /* FIXME remove this safety check at some point */
+ /* Verify that the record we're modifying is the
+ right one. */
+ rc = llog_lvfs_read_blob(obd, file, &check,
+ sizeof(check), saved_offset);
+ if (check.lrh_index != idx || check.lrh_len != reclen) {
+ CERROR("Bad modify idx %u/%u size %u/%u (%d)\n",
+ idx, check.lrh_index, reclen,
+ check.lrh_len, rc);
+ RETURN(-EFAULT);
+ }
+#endif
+ }
+
rc = llog_lvfs_write_blob(obd, file, rec, buf, saved_offset);
if (rc == 0 && reccookie) {
reccookie->lgc_lgl = loghandle->lgh_id;
* big enough to hold reclen, so all we care about is padding here.
*/
left = LLOG_CHUNK_SIZE - (file->f_pos & (LLOG_CHUNK_SIZE - 1));
- if (buf)
- reclen = sizeof(*rec) + rec->lrh_len +
- sizeof(struct llog_rec_tail);
/* NOTE: padding is a record, but no bit is set */
if (left != 0 && left != reclen &&
left < (reclen + LLOG_MIN_REC_SIZE)) {
- int bitmap_size = sizeof(llh->llh_bitmap) * 8;
- loghandle->lgh_last_idx++;
- rc = llog_lvfs_pad(obd, file, left, loghandle->lgh_last_idx);
- if (rc)
- RETURN(rc);
- /* if it's the last idx in log file, then return -ENOSPC */
- if (loghandle->lgh_last_idx == bitmap_size - 1)
- RETURN(-ENOSPC);
- }
-
+ index = loghandle->lgh_last_idx + 1;
+ rc = llog_lvfs_pad(obd, file, left, index);
+ 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 *)
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));
if (ext2_set_bit(index, llh->llh_bitmap)) {
CERROR("argh, index %u already set in log bitmap?\n", index);
LBUG(); /* should never happen */
if (rc)
RETURN(rc);
- CDEBUG(D_HA, "added record "LPX64": idx: %u, %u bytes\n",
+ CDEBUG(D_RPCTRACE, "added record "LPX64": idx: %u, %u \n",
loghandle->lgh_id.lgl_oid, 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)
- reccookie->lgc_subsys = LLOG_UNLINK_ORIG_CTXT;
+ 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 if (rec->lrh_type == OST_RAID1_REC)
- reccookie->lgc_subsys = LLOG_RD1_ORIG_CTXT;
else
reccookie->lgc_subsys = -1;
rc = 1;
* - cur_idx to the log index preceeding cur_offset
* returns -EIO/-EINVAL on error
*/
-static int llog_lvfs_next_block(struct llog_handle *loghandle, int *cur_idx,
- int next_idx, __u64 *cur_offset, void *buf,
- int len)
+static int llog_lvfs_next_block(const struct lu_env *env,
+ struct llog_handle *loghandle, int *cur_idx,
+ int next_idx, __u64 *cur_offset, void *buf,
+ int len)
{
int rc;
ENTRY;
CDEBUG(D_OTHER, "looking for log index %u (cur idx %u off "LPU64")\n",
next_idx, *cur_idx, *cur_offset);
- while (*cur_offset < loghandle->lgh_file->f_dentry->d_inode->i_size) {
+ while (*cur_offset < i_size_read(loghandle->lgh_file->f_dentry->d_inode)) {
struct llog_rec_hdr *rec;
struct llog_rec_tail *tail;
loff_t ppos;
rc = fsfilt_read_record(loghandle->lgh_ctxt->loc_exp->exp_obd,
loghandle->lgh_file, buf, len,
&ppos);
-
if (rc) {
CERROR("Cant read llog block at log id "LPU64
"/%u offset "LPU64"\n",
rc = ppos - *cur_offset;
*cur_offset = ppos;
+ 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 */
RETURN(0);
RETURN(-EINVAL);
}
- tail = buf + rc - sizeof(struct llog_rec_tail);
+ rec = buf;
+ tail = (struct llog_rec_tail *)((char *)buf + rc -
+ sizeof(struct llog_rec_tail));
+
+ if (LLOG_REC_HDR_NEEDS_SWABBING(rec))
+ lustre_swab_llog_rec(rec);
+
*cur_idx = tail->lrt_index;
/* this shouldn't happen */
/* sanity check that the start of the new buffer is no farther
* than the record that we wanted. This shouldn't happen. */
- rec = buf;
if (rec->lrh_index > next_idx) {
CERROR("missed desired record? %u > %u\n",
rec->lrh_index, next_idx);
RETURN(-EIO);
}
-static struct file *llog_filp_open(char *name, int flags, int mode)
+static int llog_lvfs_prev_block(const struct lu_env *env,
+ struct llog_handle *loghandle,
+ int prev_idx, void *buf, int len)
+{
+ __u64 cur_offset;
+ int rc;
+ ENTRY;
+
+ if (len == 0 || len & (LLOG_CHUNK_SIZE - 1))
+ RETURN(-EINVAL);
+
+ CDEBUG(D_OTHER, "looking for log index %u\n", prev_idx);
+
+ cur_offset = LLOG_CHUNK_SIZE;
+ llog_skip_over(&cur_offset, 0, prev_idx);
+
+ while (cur_offset < i_size_read(loghandle->lgh_file->f_dentry->d_inode)) {
+ struct llog_rec_hdr *rec;
+ struct llog_rec_tail *tail;
+ loff_t ppos;
+
+ ppos = cur_offset;
+
+ rc = fsfilt_read_record(loghandle->lgh_ctxt->loc_exp->exp_obd,
+ loghandle->lgh_file, buf, len,
+ &ppos);
+ if (rc) {
+ CERROR("Cant read llog block at log id "LPU64
+ "/%u offset "LPU64"\n",
+ loghandle->lgh_id.lgl_oid,
+ loghandle->lgh_id.lgl_ogen,
+ cur_offset);
+ RETURN(rc);
+ }
+
+ /* put number of bytes read into rc to make code simpler */
+ rc = ppos - cur_offset;
+ cur_offset = ppos;
+
+ if (rc == 0) /* end of file, nothing to do */
+ RETURN(0);
+
+ if (rc < sizeof(*tail)) {
+ CERROR("Invalid llog block at log id "LPU64"/%u offset "
+ LPU64"\n", loghandle->lgh_id.lgl_oid,
+ loghandle->lgh_id.lgl_ogen, cur_offset);
+ RETURN(-EINVAL);
+ }
+
+ tail = buf + rc - sizeof(struct llog_rec_tail);
+
+ /* this shouldn't happen */
+ if (tail->lrt_index == 0) {
+ CERROR("Invalid llog tail at log id "LPU64"/%u offset "
+ LPU64"\n", loghandle->lgh_id.lgl_oid,
+ loghandle->lgh_id.lgl_ogen, cur_offset);
+ RETURN(-EINVAL);
+ }
+ if (le32_to_cpu(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. */
+ rec = buf;
+ if (le32_to_cpu(rec->lrh_index) > prev_idx) {
+ CERROR("missed desired record? %u > %u\n",
+ le32_to_cpu(rec->lrh_index), prev_idx);
+ RETURN(-ENOENT);
+ }
+ RETURN(0);
+ }
+ RETURN(-EIO);
+}
+
+static struct file *llog_filp_open(char *dir, char *name, int flags, int mode)
{
char *logname;
struct file *filp;
if (logname == NULL)
return ERR_PTR(-ENOMEM);
- len = snprintf(logname, PATH_MAX, "LOGS/%s", name);
+ len = snprintf(logname, PATH_MAX, "%s/%s", dir, name);
if (len >= PATH_MAX - 1) {
filp = ERR_PTR(-ENAMETOOLONG);
} else {
filp = l_filp_open(logname, flags, mode);
- if (IS_ERR(filp))
+ if (IS_ERR(filp) && PTR_ERR(filp) != -ENOENT)
CERROR("logfile creation %s: %ld\n", logname,
PTR_ERR(filp));
}
-
OBD_FREE(logname, PATH_MAX);
return filp;
}
-/* This is a callback from the llog_* functions.
- * Assumes caller has already pushed us into the kernel context. */
-static int llog_lvfs_create(struct llog_ctxt *ctxt, struct llog_handle **res,
- struct llog_logid *logid, char *name)
+static int llog_lvfs_open(const struct lu_env *env, struct llog_handle *handle,
+ struct llog_logid *logid, char *name,
+ enum llog_open_param open_param)
{
- struct llog_handle *handle;
- struct obd_device *obd;
- struct l_dentry *dchild = NULL;
- struct obdo *oa = NULL;
- int rc = 0, cleanup_phase = 1;
- int open_flags = O_RDWR | O_CREAT | O_LARGEFILE;
- ENTRY;
-
- handle = llog_alloc_handle();
- if (handle == NULL)
- RETURN(-ENOMEM);
- *res = handle;
-
- LASSERT(ctxt);
- LASSERT(ctxt->loc_exp);
- obd = ctxt->loc_exp->exp_obd;
-
- if (logid != NULL) {
- dchild = obd_lvfs_fid2dentry(ctxt->loc_exp, logid->lgl_oid,
- logid->lgl_ogen, logid->lgl_ogr);
-
- if (IS_ERR(dchild)) {
- rc = PTR_ERR(dchild);
- CERROR("error looking up logfile "LPX64":0x%x: rc %d\n",
- logid->lgl_oid, logid->lgl_ogen, rc);
- GOTO(cleanup, rc);
- }
-
- cleanup_phase = 2;
- if (dchild->d_inode == NULL) {
- rc = -ENOENT;
- CERROR("nonexistent log file "LPX64":"LPX64": rc %d\n",
- logid->lgl_oid, logid->lgl_ogr, rc);
- GOTO(cleanup, rc);
- }
-
- handle->lgh_file = l_dentry_open(&obd->obd_ctxt, dchild,
- O_RDWR | O_LARGEFILE);
- if (IS_ERR(handle->lgh_file)) {
- rc = PTR_ERR(handle->lgh_file);
- CERROR("error opening logfile "LPX64"0x%x: rc %d\n",
- logid->lgl_oid, logid->lgl_ogen, rc);
- GOTO(cleanup, rc);
- }
-
- /* assign the value of lgh_id for handle directly */
- handle->lgh_id = *logid;
-
- } else if (name) {
- handle->lgh_file = llog_filp_open(name, open_flags, 0644);
- if (IS_ERR(handle->lgh_file))
- GOTO(cleanup, rc = PTR_ERR(handle->lgh_file));
-
- handle->lgh_id.lgl_ogr = 1;
- handle->lgh_id.lgl_oid =
- handle->lgh_file->f_dentry->d_inode->i_ino;
- handle->lgh_id.lgl_ogen =
- handle->lgh_file->f_dentry->d_inode->i_generation;
- } else {
- oa = obdo_alloc();
- if (oa == NULL)
- GOTO(cleanup, rc = -ENOMEM);
- /* XXX get some filter group constants */
- oa->o_gr = 1;
- oa->o_valid = OBD_MD_FLGENER | OBD_MD_FLGROUP;
- rc = obd_create(ctxt->loc_exp, oa, NULL, NULL);
- if (rc)
- GOTO(cleanup, rc);
-
- dchild = obd_lvfs_fid2dentry(ctxt->loc_exp, oa->o_id,
- oa->o_generation, oa->o_gr);
-
- if (IS_ERR(dchild))
- GOTO(cleanup, rc = PTR_ERR(dchild));
- cleanup_phase = 2;
- handle->lgh_file = l_dentry_open(&obd->obd_ctxt, dchild,
- open_flags);
- if (IS_ERR(handle->lgh_file))
- GOTO(cleanup, rc = PTR_ERR(handle->lgh_file));
-
- handle->lgh_id.lgl_ogr = oa->o_gr;
- handle->lgh_id.lgl_oid = oa->o_id;
- handle->lgh_id.lgl_ogen = oa->o_generation;
- }
+ struct llog_ctxt *ctxt = handle->lgh_ctxt;
+ struct l_dentry *dchild = NULL;
+ struct obd_device *obd;
+ int rc = 0;
+
+ ENTRY;
+
+ LASSERT(ctxt);
+ LASSERT(ctxt->loc_exp);
+ LASSERT(ctxt->loc_exp->exp_obd);
+ obd = ctxt->loc_exp->exp_obd;
+
+ LASSERT(handle);
+ if (logid != NULL) {
+ dchild = obd_lvfs_fid2dentry(ctxt->loc_exp, logid->lgl_oid,
+ logid->lgl_ogen, logid->lgl_oseq);
+ if (IS_ERR(dchild)) {
+ rc = PTR_ERR(dchild);
+ CERROR("%s: error looking up logfile #"LPX64"#"
+ LPX64"#%08x: rc = %d\n",
+ ctxt->loc_obd->obd_name, logid->lgl_oid,
+ logid->lgl_oseq, logid->lgl_ogen, rc);
+ GOTO(out, rc);
+ }
+ if (dchild->d_inode == NULL) {
+ l_dput(dchild);
+ rc = -ENOENT;
+ CERROR("%s: nonexistent llog #"LPX64"#"LPX64"#%08x: "
+ "rc = %d\n", ctxt->loc_obd->obd_name,
+ logid->lgl_oid, logid->lgl_oseq,
+ logid->lgl_ogen, rc);
+ GOTO(out, rc);
+ }
+ /* l_dentry_open will call dput(dchild) if there is an error */
+ handle->lgh_file = l_dentry_open(&obd->obd_lvfs_ctxt, dchild,
+ O_RDWR | O_LARGEFILE);
+ if (IS_ERR(handle->lgh_file)) {
+ rc = PTR_ERR(handle->lgh_file);
+ handle->lgh_file = NULL;
+ CERROR("%s: error opening llog #"LPX64"#"LPX64"#%08x: "
+ "rc = %d\n", ctxt->loc_obd->obd_name,
+ logid->lgl_oid, logid->lgl_oseq,
+ logid->lgl_ogen, rc);
+ GOTO(out, rc);
+ }
+
+ handle->lgh_id = *logid;
+ } else if (name) {
+ handle->lgh_file = llog_filp_open(MOUNT_CONFIGS_DIR, name,
+ O_RDWR | O_LARGEFILE, 0644);
+ if (IS_ERR(handle->lgh_file)) {
+ rc = PTR_ERR(handle->lgh_file);
+ handle->lgh_file = NULL;
+ if (rc == -ENOENT && open_param == LLOG_OPEN_NEW) {
+ OBD_ALLOC(handle->lgh_name, strlen(name) + 1);
+ if (handle->lgh_name)
+ strcpy(handle->lgh_name, name);
+ else
+ GOTO(out, rc = -ENOMEM);
+ rc = 0;
+ } else {
+ GOTO(out, rc);
+ }
+ } else {
+ handle->lgh_id.lgl_oseq = FID_SEQ_LLOG;
+ handle->lgh_id.lgl_oid =
+ handle->lgh_file->f_dentry->d_inode->i_ino;
+ handle->lgh_id.lgl_ogen =
+ handle->lgh_file->f_dentry->d_inode->i_generation;
+ }
+ } else {
+ LASSERTF(open_param == LLOG_OPEN_NEW, "%#x\n", open_param);
+ handle->lgh_file = NULL;
+ }
+
+ /* No new llog is expected but doesn't exist */
+ if (open_param != LLOG_OPEN_NEW && handle->lgh_file == NULL)
+ GOTO(out_name, rc = -ENOENT);
+
+ RETURN(0);
+out_name:
+ if (handle->lgh_name != NULL)
+ OBD_FREE(handle->lgh_name, strlen(name) + 1);
+out:
+ RETURN(rc);
+}
- handle->lgh_ctxt = ctxt;
- finish:
- if (oa)
- obdo_free(oa);
- RETURN(rc);
-cleanup:
- switch (cleanup_phase) {
- case 2:
- l_dput(dchild);
- case 1:
- llog_free_handle(handle);
- }
- goto finish;
+static int llog_lvfs_exist(struct llog_handle *handle)
+{
+ return (handle->lgh_file != NULL);
}
-static int llog_lvfs_close(struct llog_handle *handle)
+/* This is a callback from the llog_* functions.
+ * Assumes caller has already pushed us into the kernel context. */
+static int llog_lvfs_create(const struct lu_env *env,
+ struct llog_handle *handle,
+ struct thandle *th)
{
- int rc;
- ENTRY;
+ struct llog_ctxt *ctxt = handle->lgh_ctxt;
+ struct obd_device *obd;
+ struct l_dentry *dchild = NULL;
+ struct obdo *oa = NULL;
+ int rc = 0;
+ int open_flags = O_RDWR | O_CREAT | O_LARGEFILE;
+
+ ENTRY;
+
+ LASSERT(ctxt);
+ LASSERT(ctxt->loc_exp);
+ obd = ctxt->loc_exp->exp_obd;
+ LASSERT(handle->lgh_file == NULL);
+
+ if (handle->lgh_name) {
+ handle->lgh_file = llog_filp_open(MOUNT_CONFIGS_DIR,
+ handle->lgh_name,
+ open_flags, 0644);
+ if (IS_ERR(handle->lgh_file))
+ RETURN(PTR_ERR(handle->lgh_file));
+
+ handle->lgh_id.lgl_oseq = FID_SEQ_LLOG;
+ handle->lgh_id.lgl_oid =
+ handle->lgh_file->f_dentry->d_inode->i_ino;
+ handle->lgh_id.lgl_ogen =
+ handle->lgh_file->f_dentry->d_inode->i_generation;
+ } else {
+ OBDO_ALLOC(oa);
+ if (oa == NULL)
+ RETURN(-ENOMEM);
+
+ oa->o_seq = FID_SEQ_LLOG;
+ oa->o_valid = OBD_MD_FLGENER | OBD_MD_FLGROUP;
+
+ rc = obd_create(NULL, ctxt->loc_exp, oa, NULL, NULL);
+ if (rc)
+ GOTO(out, rc);
+
+ /* FIXME: rationalize the misuse of o_generation in
+ * this API along with mds_obd_{create,destroy}.
+ * Hopefully it is only an internal API issue. */
+#define o_generation o_parent_oid
+ dchild = obd_lvfs_fid2dentry(ctxt->loc_exp, oa->o_id,
+ oa->o_generation, oa->o_seq);
+ if (IS_ERR(dchild))
+ GOTO(out, rc = PTR_ERR(dchild));
+
+ handle->lgh_file = l_dentry_open(&obd->obd_lvfs_ctxt, dchild,
+ open_flags);
+ if (IS_ERR(handle->lgh_file))
+ GOTO(out, rc = PTR_ERR(handle->lgh_file));
+
+ handle->lgh_id.lgl_oseq = oa->o_seq;
+ handle->lgh_id.lgl_oid = oa->o_id;
+ handle->lgh_id.lgl_ogen = oa->o_generation;
+out:
+ OBDO_FREE(oa);
+ }
+ RETURN(rc);
+}
- rc = filp_close(handle->lgh_file, 0);
- if (rc)
- CERROR("error closing log: rc %d\n", rc);
- RETURN(rc);
+static int llog_lvfs_close(const struct lu_env *env,
+ struct llog_handle *handle)
+{
+ int rc;
+
+ ENTRY;
+
+ if (handle->lgh_file == NULL)
+ RETURN(0);
+ rc = filp_close(handle->lgh_file, 0);
+ if (rc)
+ CERROR("%s: error closing llog #"LPX64"#"LPX64"#%08x: "
+ "rc = %d\n", handle->lgh_ctxt->loc_obd->obd_name,
+ handle->lgh_id.lgl_oid, handle->lgh_id.lgl_oseq,
+ handle->lgh_id.lgl_ogen, rc);
+ handle->lgh_file = NULL;
+ if (handle->lgh_name)
+ OBD_FREE(handle->lgh_name, strlen(handle->lgh_name) + 1);
+ RETURN(rc);
}
-static int llog_lvfs_destroy(struct llog_handle *handle)
+static int llog_lvfs_destroy(const struct lu_env *env,
+ struct llog_handle *handle)
{
struct dentry *fdentry;
struct obdo *oa;
- int rc;
+ struct obd_device *obd = handle->lgh_ctxt->loc_exp->exp_obd;
+ char *dir;
+ void *th;
+ struct inode *inode;
+ int rc, rc1;
ENTRY;
+ dir = MOUNT_CONFIGS_DIR;
+
+ LASSERT(handle->lgh_file);
fdentry = handle->lgh_file->f_dentry;
- if (!strcmp(fdentry->d_parent->d_name.name, "LOGS")) {
- struct obd_device *obd = handle->lgh_ctxt->loc_exp->exp_obd;
- struct inode *inode = fdentry->d_parent->d_inode;
- struct obd_run_ctxt saved;
+ inode = fdentry->d_parent->d_inode;
+ if (strcmp(fdentry->d_parent->d_name.name, dir) == 0) {
+ struct lvfs_run_ctxt saved;
+ struct vfsmount *mnt = mntget(handle->lgh_file->f_vfsmnt);
- push_ctxt(&saved, &obd->obd_ctxt, NULL);
+ push_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
dget(fdentry);
- rc = llog_lvfs_close(handle);
-
- if (rc == 0) {
- down(&inode->i_sem);
- rc = vfs_unlink(inode, fdentry);
- up(&inode->i_sem);
- }
+ rc = llog_lvfs_close(env, handle);
+ if (rc == 0) {
+ mutex_lock_nested(&inode->i_mutex, I_MUTEX_PARENT);
+ rc = ll_vfs_unlink(inode, fdentry, mnt);
+ mutex_unlock(&inode->i_mutex);
+ }
+ mntput(mnt);
dput(fdentry);
- pop_ctxt(&saved, &obd->obd_ctxt, NULL);
+ pop_ctxt(&saved, &obd->obd_lvfs_ctxt, NULL);
RETURN(rc);
}
- oa = obdo_alloc();
+ OBDO_ALLOC(oa);
if (oa == NULL)
RETURN(-ENOMEM);
oa->o_id = handle->lgh_id.lgl_oid;
- oa->o_gr = handle->lgh_id.lgl_ogr;
+ oa->o_seq = handle->lgh_id.lgl_oseq;
oa->o_generation = handle->lgh_id.lgl_ogen;
+#undef o_generation
oa->o_valid = OBD_MD_FLID | OBD_MD_FLGROUP | OBD_MD_FLGENER;
- rc = llog_lvfs_close(handle);
+ rc = llog_lvfs_close(env, handle);
if (rc)
GOTO(out, rc);
- rc = obd_destroy(handle->lgh_ctxt->loc_exp, oa, NULL, NULL);
+ th = fsfilt_start_log(obd, inode, FSFILT_OP_UNLINK, NULL, 1);
+ if (IS_ERR(th)) {
+ CERROR("fsfilt_start failed: %ld\n", PTR_ERR(th));
+ GOTO(out, rc = PTR_ERR(th));
+ }
+
+ rc = obd_destroy(NULL, handle->lgh_ctxt->loc_exp, oa,
+ NULL, NULL, NULL, NULL);
+
+ rc1 = fsfilt_commit(obd, inode, th, 0);
+ if (rc == 0 && rc1 != 0)
+ rc = rc1;
out:
- obdo_free(oa);
+ OBDO_FREE(oa);
RETURN(rc);
}
/* reads the catalog list */
-int llog_get_cat_list(struct obd_device *obd, struct obd_device *disk_obd,
- char *name, int count, struct llog_catid *idarray)
+int llog_get_cat_list(struct obd_device *disk_obd,
+ char *name, int idx, int count, struct llog_catid *idarray)
{
- struct obd_run_ctxt saved;
+ struct lvfs_run_ctxt saved;
struct l_file *file;
- int rc;
+ int rc, rc1 = 0;
int size = sizeof(*idarray) * count;
- loff_t off = 0;
+ loff_t off = idx * sizeof(*idarray);
+ ENTRY;
- LASSERT(count);
+ if (!count)
+ RETURN(0);
- push_ctxt(&saved, &obd->obd_ctxt, NULL);
+ push_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
file = filp_open(name, O_RDWR | O_CREAT | O_LARGEFILE, 0700);
if (!file || IS_ERR(file)) {
rc = PTR_ERR(file);
GOTO(out, rc = -ENOENT);
}
+ CDEBUG(D_CONFIG, "cat list: disk size=%d, read=%d\n",
+ (int)i_size_read(file->f_dentry->d_inode), size);
+
+ /* read for new ost index or for empty file */
+ memset(idarray, 0, size);
+ if (i_size_read(file->f_dentry->d_inode) < off)
+ GOTO(out, rc = 0);
+
rc = fsfilt_read_record(disk_obd, file, idarray, size, &off);
if (rc) {
- CDEBUG(D_INODE,"OBD filter: error reading %s: rc %d\n",
- name, rc);
+ CERROR("OBD filter: error reading %s: rc %d\n", name, rc);
GOTO(out, rc);
}
+ EXIT;
out:
- pop_ctxt(&saved, &obd->obd_ctxt, NULL);
+ pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
if (file && !IS_ERR(file))
- rc = filp_close(file, 0);
- RETURN(rc);
+ rc1 = filp_close(file, 0);
+ if (rc == 0)
+ rc = rc1;
+ return rc;
}
EXPORT_SYMBOL(llog_get_cat_list);
/* writes the cat list */
-int llog_put_cat_list(struct obd_device *obd, struct obd_device *disk_obd,
- char *name, int count, struct llog_catid *idarray)
+int llog_put_cat_list(struct obd_device *disk_obd,
+ char *name, int idx, int count, struct llog_catid *idarray)
{
- struct obd_run_ctxt saved;
+ struct lvfs_run_ctxt saved;
struct l_file *file;
- int rc;
+ int rc, rc1 = 0;
int size = sizeof(*idarray) * count;
- loff_t off = 0;
+ loff_t off = idx * sizeof(*idarray);
- LASSERT(count);
+ if (!count)
+ GOTO(out1, rc = 0);
- push_ctxt(&saved, &obd->obd_ctxt, NULL);
+ push_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
file = filp_open(name, O_RDWR | O_CREAT | O_LARGEFILE, 0700);
if (!file || IS_ERR(file)) {
rc = PTR_ERR(file);
rc = fsfilt_write_record(disk_obd, file, idarray, size, &off, 1);
if (rc) {
- CDEBUG(D_INODE,"OBD filter: error reading %s: rc %d\n",
+ CDEBUG(D_INODE,"OBD filter: error writeing %s: rc %d\n",
name, rc);
GOTO(out, rc);
}
- out:
- pop_ctxt(&saved, &obd->obd_ctxt, NULL);
+out:
+ pop_ctxt(&saved, &disk_obd->obd_lvfs_ctxt, NULL);
if (file && !IS_ERR(file))
- rc = filp_close(file, 0);
+ rc1 = filp_close(file, 0);
+
+ if (rc == 0)
+ rc = rc1;
+out1:
RETURN(rc);
}
+EXPORT_SYMBOL(llog_put_cat_list);
struct llog_operations llog_lvfs_ops = {
- lop_write_rec: llog_lvfs_write_rec,
- lop_next_block: llog_lvfs_next_block,
- lop_read_header: llog_lvfs_read_header,
- lop_create: llog_lvfs_create,
- lop_destroy: llog_lvfs_destroy,
- lop_close: llog_lvfs_close,
- // lop_cancel: llog_lvfs_cancel,
+ .lop_write_rec = llog_lvfs_write_rec,
+ .lop_next_block = llog_lvfs_next_block,
+ .lop_prev_block = llog_lvfs_prev_block,
+ .lop_read_header = llog_lvfs_read_header,
+ .lop_create = llog_lvfs_create,
+ .lop_destroy = llog_lvfs_destroy,
+ .lop_close = llog_lvfs_close,
+ .lop_open = llog_lvfs_open,
+ .lop_exist = llog_lvfs_exist,
};
-
EXPORT_SYMBOL(llog_lvfs_ops);
-
#else /* !__KERNEL__ */
-
-static int llog_lvfs_read_header(struct llog_handle *handle)
+int llog_get_cat_list(struct obd_device *disk_obd,
+ char *name, int idx, int count,
+ struct llog_catid *idarray)
{
- LBUG();
- return 0;
+ LBUG();
+ return 0;
}
-static int llog_lvfs_write_rec(struct llog_handle *loghandle,
- struct llog_rec_hdr *rec,
- struct llog_cookie *reccookie, int cookiecount,
- void *buf, int idx)
+int llog_put_cat_list(struct obd_device *disk_obd,
+ char *name, int idx, int count,
+ struct llog_catid *idarray)
{
- LBUG();
- return 0;
+ LBUG();
+ return 0;
}
-static int llog_lvfs_next_block(struct llog_handle *loghandle, int *cur_idx,
- int next_idx, __u64 *cur_offset, void *buf,
- int len)
-{
- LBUG();
- return 0;
-}
-
-static int llog_lvfs_create(struct llog_ctxt *ctxt, struct llog_handle **res,
- struct llog_logid *logid, char *name)
-{
- LBUG();
- return 0;
-}
-
-static int llog_lvfs_close(struct llog_handle *handle)
-{
- LBUG();
- return 0;
-}
-
-static int llog_lvfs_destroy(struct llog_handle *handle)
-{
- LBUG();
- return 0;
-}
-
-int llog_get_cat_list(struct obd_device *obd, struct obd_device *disk_obd,
- char *name, int count, struct llog_logid *idarray)
-{
- LBUG();
- return 0;
-}
-
-int llog_put_cat_list(struct obd_device *obd, struct obd_device *disk_obd,
- char *name, int count, struct llog_logid *idarray)
-{
- LBUG();
- return 0;
-}
-
-struct llog_operations llog_lvfs_ops = {
- lop_write_rec: llog_lvfs_write_rec,
- lop_next_block: llog_lvfs_next_block,
- lop_read_header: llog_lvfs_read_header,
- lop_create: llog_lvfs_create,
- lop_destroy: llog_lvfs_destroy,
- lop_close: llog_lvfs_close,
-// lop_cancel: llog_lvfs_cancel,
-};
+struct llog_operations llog_lvfs_ops = {};
#endif
git://git.whamcloud.com / fs / lustre-release.git / blobdiff