Whamcloud - gitweb
LU-9679 general: avoid bare return; at end of void function
[fs/lustre-release.git] / lustre / utils / lustre_rsync.c
index e0f7599..1b7b52f 100644 (file)
  *
  * 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.
+ * http://www.gnu.org/licenses/gpl-2.0.html
  *
  * GPL HEADER END
  */
@@ -27,7 +23,7 @@
  * Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  *
- * Copyright (c) 2012, 2014, Intel Corporation.
+ * Copyright (c) 2012, 2017, Intel Corporation.
  */
 /*
  * This file is part of Lustre, http://www.lustre.org/
  *      [pfid,tfid,name] tracked from (1) is used for this.
  */
 
+#include <assert.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <errno.h>
 #include <limits.h>
 #include <utime.h>
+#include <time.h>
 #include <sys/xattr.h>
+#include <linux/types.h>
 
 #include <libcfs/util/string.h>
-#include <libcfs/util/parser.h>
 #include <lustre/lustreapi.h>
-#include <lustre/lustre_idl.h>
 #include "lustre_rsync.h"
+#include "callvpe.h"
 
 #define REPLICATE_STATUS_VER 1
 #define CLEAR_INTERVAL 100
 #define DINFO 1
 #define DTRACE 2
 
-/* Not used; declared for fulfilling obd.c's dependency. */
-command_t cmdlist[0];
-extern int obd_initialize(int argc, char **argv);
-
 /* Information for processing a changelog record. This structure is
    allocated on the heap instead of allocating large variables on the
    stack. */
@@ -161,13 +155,12 @@ struct lr_info {
        char spfid[LR_FID_STR_LEN];
        char sname[NAME_MAX + 1];
        char name[NAME_MAX + 1];
-        char src[PATH_MAX + 1];
-        char dest[PATH_MAX + 1];
+       char src[3 * PATH_MAX + 1];
+       char dest[3 * PATH_MAX + 1];
         char path[PATH_MAX + 1];
         char savedpath[PATH_MAX + 1];
         char link[PATH_MAX + 1];
         char linktmp[PATH_MAX + 1];
-        char cmd[PATH_MAX];
         int bufsize;
         char *buf;
 
@@ -199,32 +192,32 @@ int quit;       /* Flag to stop processing the changelog; set on the
                    receipt of a signal */
 int abort_on_err = 0;
 
-char rsync[PATH_MAX];
-char rsync_ver[PATH_MAX];
+char rsync[PATH_MAX + 128];
+char rsync_ver[PATH_MAX * 2];
 struct lr_parent_child_list *parents;
 
 FILE *debug_log;
 
 /* Command line options */
 struct option long_opts[] = {
-        {"source",      required_argument, 0, 's'},
-        {"target",      required_argument, 0, 't'},
-        {"mdt",         required_argument, 0, 'm'},
-        {"user",        required_argument, 0, 'u'},
-        {"statuslog",   required_argument, 0, 'l'},
-        {"verbose",     no_argument,       0, 'v'},
-        {"xattr",       required_argument, 0, 'x'},
-        {"dry-run",     no_argument,       0, 'z'},
-        /* Undocumented options follow */
-        {"cl-clear",    required_argument, 0, 'c'},
-        {"use-rsync",   no_argument,       0, 'r'},
-        {"rsync-threshold", required_argument, 0, 'y'},
-        {"start-recno", required_argument, 0, 'n'},
-        {"abort-on-err",no_argument,       0, 'a'},
-        {"debug",       required_argument, 0, 'd'},
-       {"debuglog",    required_argument, 0, 'D'},
-       {0, 0, 0, 0}
-};
+       { .val = 'l',   .name = "statuslog",    .has_arg = required_argument },
+       { .val = 'm',   .name = "mdt",          .has_arg = required_argument },
+       { .val = 's',   .name = "source",       .has_arg = required_argument },
+       { .val = 't',   .name = "target",       .has_arg = required_argument },
+       { .val = 'u',   .name = "user",         .has_arg = required_argument },
+       { .val = 'v',   .name = "verbose",      .has_arg = no_argument },
+       { .val = 'x',   .name = "xattr",        .has_arg = required_argument },
+       { .val = 'z',   .name = "dry-run",      .has_arg = no_argument },
+       /* Undocumented options follow */
+       { .val = 'a',   .name = "abort-on-err", .has_arg = no_argument },
+       { .val = 'c',   .name = "cl-clear",     .has_arg = required_argument },
+       { .val = 'd',   .name = "debug",        .has_arg = required_argument },
+       { .val = 'D',   .name = "debuglog",     .has_arg = required_argument },
+       { .val = 'n',   .name = "start-recno",  .has_arg = required_argument },
+       { .val = 'r',   .name = "use-rsync",    .has_arg = no_argument },
+       { .val = 'y',   .name = "rsync-threshold",
+                                               .has_arg = required_argument },
+       { .name = NULL } };
 
 /* Command line usage */
 void lr_usage()
@@ -241,16 +234,6 @@ void lr_usage()
                 "\t--dry-run        don't write anything\n");
 }
 
-#define DEBUG_ENTRY(info)                                                     \
-       lr_debug(D_TRACE, "***** Start %lld %s (%d) %s %s %s *****\n",         \
-                (info)->recno, changelog_type2str((info)->type),              \
-                (info)->type, (info)->tfid, (info)->pfid, (info)->name);
-
-#define DEBUG_EXIT(info, rc)                                                  \
-       lr_debug(D_TRACE, "##### End %lld %s (%d) %s %s %s rc=%d #####\n",     \
-                (info)->recno, changelog_type2str((info)->type),              \
-                (info)->type, (info)->tfid, (info)->pfid, (info)->name, rc);
-
 /* Print debug information. This is controlled by the value of the
    global variable 'debug' */
 void lr_debug(int level, const char *fmt, ...)
@@ -283,9 +266,8 @@ void * lr_grow_buf(void *buf, int size)
 /* Use rsync to replicate file data */
 int lr_rsync_data(struct lr_info *info)
 {
-        int rc;
-        struct stat st_src, st_dest;
-        char cmd[PATH_MAX];
+       struct stat st_src, st_dest;
+       int rc;
 
         lr_debug(DTRACE, "Syncing data%s\n", info->tfid);
 
@@ -307,18 +289,28 @@ int lr_rsync_data(struct lr_info *info)
 
         if (st_src.st_mtime != st_dest.st_mtime ||
             st_src.st_size != st_dest.st_size) {
-                /* XXX spawning off an rsync for every data sync and
-                 * waiting synchronously is bad for performance.
-                 * librsync could possibly used here. But it does not
-                 * seem to be of production grade. Multi-threaded
-                 * replication is also to be considered.
-                 */
-                int status;
-                snprintf(cmd, PATH_MAX, "%s --inplace %s %s", rsync, info->src,
-                        info->dest);
-                lr_debug(DTRACE, "\t%s %s\n", cmd, info->tfid);
-                status = system(cmd);
-                if (status == -1) {
+               /* XXX spawning off an rsync for every data sync and
+                * waiting synchronously is bad for performance.
+                * librsync could possibly used here. But it does not
+                * seem to be of production grade. Multi-threaded
+                * replication is also to be considered.
+                */
+               char *args[] = {
+                       rsync,
+                       "--inplace",
+                       "--",
+                       info->src,
+                       info->dest,
+                       NULL,
+               };
+               extern char **environ;
+               int status;
+
+               lr_debug(DTRACE, "\t%s %s %s %s %s %s\n", args[0], args[1],
+                        args[2], args[3], args[4], info->tfid);
+
+               status = callvpe(rsync, args, environ);
+               if (status < 0) {
                         rc = -errno;
                 } else if (WIFEXITED(status)) {
                         status = WEXITSTATUS(status);
@@ -436,7 +428,7 @@ int lr_sync_data(struct lr_info *info)
 }
 
 /* Copy all attributes from file src to file dest */
-int lr_copy_attr(char *src, char *dest)
+int lr_copy_attr(const char *src, const char *dest)
 {
         struct stat st;
         struct utimbuf time;
@@ -506,9 +498,10 @@ int lr_copy_xattr(struct lr_info *info)
                                  rc, errno);
                         if (rc == -1) {
                                 if (errno != ENOTSUP) {
-                                        fprintf(stderr, "Error replicating "
-                                                " xattr for %s: %d\n",
-                                                info->dest, errno);
+                                       fprintf(stderr,
+                       "cannot replicate xattrs from '%s' to '%s': %s\n",
+                                               info->src, info->dest,
+                                               strerror(errno));
                                         errors++;
                                 }
                                 rc = 0;
@@ -552,7 +545,6 @@ void lr_get_FID_PATH(char *mntpt, char *fidstr, char *buf, int bufsize)
         /* Open-by-FID path is <mntpt>/.lustre/fid/[SEQ:OID:VER] */
         snprintf(buf, bufsize, "%s/%s/fid/%s", mntpt, dot_lustre_name,
                  fidstr);
-        return;
 }
 
 /* Read the symlink information into 'info->link' */
@@ -573,14 +565,15 @@ int lr_get_symlink(struct lr_info *info)
                     strlen(status->ls_source)) == 0) {
                 /* Strip source fs path and replace with target fs path. */
                 link = info->linktmp + strlen(status->ls_source);
-                snprintf(info->src, PATH_MAX, "%s%s",
+               snprintf(info->src, sizeof(info->src), "%s%s",
                          status->ls_targets[info->target_no], link);
                 link = info->src;
         } else {
                 link = info->linktmp;
         }
-       strlcpy(info->link, link, sizeof(info->link));
-
+       rc = snprintf(info->link, sizeof(info->link), "%s", link);
+       if (rc >= sizeof(info->link))
+               rc = -E2BIG;
        return rc;
 }
 
@@ -611,8 +604,13 @@ int lr_mkfile(struct lr_info *info)
         } else {
                 rc = mknod(info->dest, S_IFREG | 0777, 0);
         }
-        if (rc)
-                return -errno;
+
+       if (rc < 0) {
+               if (errno == EEXIST)
+                       rc = 0;
+               else
+                       return -errno;
+       }
 
         /* Sync data and attributes */
         if (info->type == CL_CREATE || info->type == CL_MKDIR) {
@@ -643,13 +641,16 @@ int lr_add_pc(const char *pfid, const char *tfid, const char *name)
        p = calloc(1, sizeof(*p));
        if (p == NULL)
                return -ENOMEM;
-       len = strlcpy(p->pc_log.pcl_pfid, pfid, sizeof(p->pc_log.pcl_pfid));
+       len = snprintf(p->pc_log.pcl_pfid, sizeof(p->pc_log.pcl_pfid),
+                      "%s", pfid);
        if (len >= sizeof(p->pc_log.pcl_pfid))
                goto out_err;
-       len = strlcpy(p->pc_log.pcl_tfid, tfid, sizeof(p->pc_log.pcl_tfid));
+       len = snprintf(p->pc_log.pcl_tfid, sizeof(p->pc_log.pcl_tfid),
+                      "%s", tfid);
        if (len >= sizeof(p->pc_log.pcl_tfid))
                goto out_err;
-       len = strlcpy(p->pc_log.pcl_name, name, sizeof(p->pc_log.pcl_name));
+       len = snprintf(p->pc_log.pcl_name, sizeof(p->pc_log.pcl_name),
+                      "%s", name);
        if (len >= sizeof(p->pc_log.pcl_name))
                goto out_err;
 
@@ -665,18 +666,22 @@ out_err:
 void lr_cascade_move(const char *fid, const char *dest, struct lr_info *info)
 {
         struct lr_parent_child_list *curr, *prev;
-        char *d;
+       char d[4 * PATH_MAX + 1];
         int rc;
 
-        d = calloc(1, PATH_MAX + 1);
         prev = curr = parents;
         while (curr) {
                 if (strcmp(curr->pc_log.pcl_pfid, fid) == 0) {
-                        snprintf(d, PATH_MAX, "%s/%s", dest,
-                                 curr->pc_log.pcl_name);
-                        snprintf(info->src, PATH_MAX, "%s/%s/%s",
-                                status->ls_targets[info->target_no],
-                                SPECIAL_DIR, curr->pc_log.pcl_tfid);
+                       if (snprintf(d, sizeof(d), "%s/%s", dest,
+                                    curr->pc_log.pcl_name) >= sizeof(d)) {
+                               fprintf(stderr, "Buffer truncated\n");
+                               return;
+                       }
+                       if (snprintf(info->src, sizeof(info->src), "%s/%s/%s",
+                                    status->ls_targets[info->target_no],
+                                    SPECIAL_DIR, curr->pc_log.pcl_tfid) >=
+                           sizeof(info->src))
+                               return;
                         rc = rename(info->src, d);
                         if (rc == -1) {
                                 fprintf(stderr, "Error renaming file "
@@ -697,8 +702,6 @@ void lr_cascade_move(const char *fid, const char *dest, struct lr_info *info)
                         curr = curr->pc_next;
                 }
         }
-
-        free(d);
 }
 
 /* remove [info->spfid, info->sfid] from parents */
@@ -725,7 +728,7 @@ int lr_mk_special(struct lr_info *info)
 {
         int rc;
 
-        snprintf(info->dest, PATH_MAX, "%s/%s/%s",
+       snprintf(info->dest, sizeof(info->dest), "%s/%s/%s",
                 status->ls_targets[info->target_no], SPECIAL_DIR,
                 info->tfid);
 
@@ -754,14 +757,26 @@ int lr_rmfile(struct lr_info *info)
 /* Recursively remove directory and its contents */
 int lr_rm_recursive(struct lr_info *info)
 {
-        int rc;
-
-        snprintf(info->cmd, PATH_MAX, "rm -rf %s", info->dest);
-        rc = system(info->cmd);
-        if (rc == -1)
-                rc = -errno;
+       char *args[] = {
+               "rm",
+               "-rf",
+               "--",
+               info->dest,
+               NULL,
+       };
+       extern char **environ;
+       int status;
+       int rc;
+
+       status = callvpe("/bin/rm", args, environ);
+       if (status < 0)
+               rc = -errno;
+       else if (WIFEXITED(status))
+               rc = WEXITSTATUS(status) == 0 ? 0 : -EINVAL;
+       else
+               rc = -EINTR;
 
-        return rc;
+       return rc;
 }
 
 /* Remove a file under SPECIAL_DIR with its tfid as its name. */
@@ -769,7 +784,7 @@ int lr_rm_special(struct lr_info *info)
 {
         int rc;
 
-        snprintf(info->dest, PATH_MAX, "%s/%s/%s",
+       snprintf(info->dest, sizeof(info->dest), "%s/%s/%s",
                  status->ls_targets[info->target_no], SPECIAL_DIR,
                  info->tfid);
         rc = lr_rmfile(info);
@@ -813,11 +828,13 @@ int lr_create(struct lr_info *info)
         /* Is f2p(pfid)+name != f2p(tfid)? If not the file has moved. */
         len = strlen(info->path);
        if (len == 1 && info->path[0] == '/')
-               snprintf(info->dest, PATH_MAX, "%s", info->name);
+               snprintf(info->dest, sizeof(info->dest), "%s", info->name);
        else if (len - 1 > 0 && info->path[len - 1] == '/')
-                snprintf(info->dest, PATH_MAX, "%s%s", info->path, info->name);
+               snprintf(info->dest, sizeof(info->dest), "%s%s", info->path,
+                        info->name);
         else
-                snprintf(info->dest, PATH_MAX, "%s/%s", info->path, info->name);
+               snprintf(info->dest, sizeof(info->dest), "%s/%s", info->path,
+                        info->name);
 
         lr_debug(DTRACE, "dest = %s; savedpath = %s\n", info->dest,
                  info->savedpath);
@@ -830,8 +847,8 @@ int lr_create(struct lr_info *info)
         /* Is f2p(pfid) present on the target? If not, the parent has
            moved */
         if (!mkspecial) {
-               snprintf(info->dest, PATH_MAX, "%s/%s", status->ls_targets[0],
-                       info->path);
+               snprintf(info->dest, sizeof(info->dest), "%s/%s",
+                        status->ls_targets[0], info->path);
                if (access(info->dest, F_OK) != 0) {
                        lr_debug(DTRACE, "create: parent %s not found\n",
                                info->dest);
@@ -840,10 +857,10 @@ int lr_create(struct lr_info *info)
         }
         for (info->target_no = 0; info->target_no < status->ls_num_targets;
              info->target_no++) {
-                snprintf(info->dest, PATH_MAX, "%s/%s",
+               snprintf(info->dest, sizeof(info->dest), "%s/%s",
                         status->ls_targets[info->target_no], info->savedpath);
                 lr_get_FID_PATH(status->ls_source, info->tfid, info->src,
-                                    PATH_MAX);
+                               PATH_MAX);
 
                 if (!mkspecial)
                         rc1 = lr_mkfile(info);
@@ -879,7 +896,7 @@ int lr_remove(struct lr_info *info)
                         rc = rc1;
                         continue;
                 }
-                snprintf(info->dest, PATH_MAX, "%s/%s/%s",
+               snprintf(info->dest, sizeof(info->dest), "%s/%s/%s",
                         status->ls_targets[info->target_no], info->path,
                         info->name);
 
@@ -907,7 +924,7 @@ int lr_move(struct lr_info *info)
         int special_dest = 0;
        char srcpath[PATH_MAX + 1] = "";
 
-       LASSERT(info->is_extended);
+       assert(info->is_extended);
 
        rc_src = lr_get_path(info, info->spfid);
        if (rc_src < 0 && rc_src != -ENOENT)
@@ -922,21 +939,22 @@ int lr_move(struct lr_info *info)
              info->target_no++) {
 
                 if (!rc_dest) {
-                        snprintf(info->dest, PATH_MAX, "%s/%s",
+                       snprintf(info->dest, sizeof(info->dest), "%s/%s",
                                 status->ls_targets[info->target_no],
                                info->path);
                         if (access(info->dest, F_OK) != 0) {
                                 rc_dest = -errno;
                         } else {
-                                snprintf(info->dest, PATH_MAX, "%s/%s/%s",
-                                        status->ls_targets[info->target_no],
-                                       info->path, info->name);
+                               snprintf(info->dest, sizeof(info->dest),
+                                        "%s/%s/%s",
+                                        status->ls_targets[info->target_no],
+                                        info->path, info->name);
                         }
                        lr_debug(DINFO, "dest path %s rc_dest=%d\n", info->dest,
                                 rc_dest);
                 }
                 if (rc_dest == -ENOENT) {
-                        snprintf(info->dest, PATH_MAX, "%s/%s/%s",
+                       snprintf(info->dest, sizeof(info->dest), "%s/%s/%s",
                                 status->ls_targets[info->target_no],
                                SPECIAL_DIR, info->sfid);
                         special_dest = 1;
@@ -944,7 +962,7 @@ int lr_move(struct lr_info *info)
                 }
 
                if (!rc_src) {
-                       snprintf(info->src, PATH_MAX, "%s/%s/%s",
+                       snprintf(info->src, sizeof(info->src), "%s/%s/%s",
                                status->ls_targets[info->target_no],
                                srcpath, info->sname);
                        lr_debug(DINFO, "src path %s rc_src=%d\n", info->src,
@@ -952,7 +970,7 @@ int lr_move(struct lr_info *info)
                }
                 if (rc_src == -ENOENT || (access(info->src, F_OK) != 0 &&
                                           errno == ENOENT)) {
-                        snprintf(info->src, PATH_MAX, "%s/%s/%s",
+                       snprintf(info->src, sizeof(info->src), "%s/%s/%s",
                                 status->ls_targets[info->target_no],
                                SPECIAL_DIR, info->sfid);
                         special_src = 1;
@@ -988,7 +1006,6 @@ int lr_move(struct lr_info *info)
 int lr_link(struct lr_info *info)
 {
         int i;
-        int len;
         int rc;
         int rc1;
         struct stat st;
@@ -1001,54 +1018,75 @@ int lr_link(struct lr_info *info)
         for (info->target_no = 0; info->target_no < status->ls_num_targets;
              info->target_no++) {
 
-                info->src[0] = 0;
-                info->dest[0] = 0;
-                rc1 = 0;
+               info->src[0] = 0;
+               info->dest[0] = 0;
+               rc1 = 0;
+
+               /*
+                * The changelog record has the new parent directory FID and
+                * name of the target file. So info->dest can be constructed
+                * by getting the path of the new parent directory and
+                * appending the target file name.
+                */
+               rc1 = lr_get_path(info, info->pfid);
+               lr_debug(rc1 ? 0 : DTRACE, "\tparent fid2path %s, %s, rc=%d\n",
+                        info->path, info->name, rc1);
+
+               if (rc1 == 0) {
+                       snprintf(info->dest, sizeof(info->dest), "%s/%s/%s",
+                                status->ls_targets[info->target_no],
+                                info->path, info->name);
+                       lr_debug(DINFO, "link destination is %s\n", info->dest);
+               }
+
+               /* Search through the hardlinks to get the src */
+               for (i = 0; i < st.st_nlink && info->src[0] == 0; i++) {
+                       size_t len;
 
-                /* Search through the hardlinks to get the src and dest */
-                for (i = 0; i < st.st_nlink && (info->src[0] == 0 ||
-                                                info->dest[0] == 0); i++) {
                         rc1 = lr_get_path_ln(info, info->tfid, i);
                         lr_debug(rc1 ? 0:DTRACE, "\tfid2path %s, %s, %d rc=%d\n",
                                  info->path, info->name, i, rc1);
                         if (rc1)
                                 break;
 
-                        len = strlen(info->path) - strlen(info->name);
-                       if (len >= 0 && strcmp(info->path + len,
-                                              info->name) == 0)
-                                snprintf(info->dest, PATH_MAX, "%s/%s",
-                                        status->ls_targets[info->target_no],
-                                        info->path);
-                        else if (info->src[0] == 0)
-                                snprintf(info->src, PATH_MAX, "%s/%s",
-                                        status->ls_targets[info->target_no],
-                                        info->path);
-                }
+                       /*
+                        * Compare the path of target FID with info->dest
+                        * to find out info->src.
+                        */
+                       len = sizeof(status->ls_targets[info->target_no]) +
+                             sizeof(info->path);
+                       char srcpath[len + 1];
+
+                       snprintf(srcpath, sizeof(srcpath), "%s/%s",
+                                status->ls_targets[info->target_no],
+                                info->path);
+
+                       if (strcmp(srcpath, info->dest) != 0) {
+                               snprintf(info->src, sizeof(info->src), "%s",
+                                        srcpath);
+                               lr_debug(DINFO, "link source is %s\n",
+                                        info->src);
+                       }
+               }
 
                 if (rc1) {
                         rc = rc1;
                         continue;
                 }
 
-                if (info->src[0] == 0 || info->dest[0] == 0)
-                        /* Could not find the source or destination.
-                         This can happen when some links don't exist
-                         anymore. */
-                        return -EINVAL;
-
                 if (info->src[0] == 0)
-                        snprintf(info->src, PATH_MAX, "%s/%s/%s",
+                       snprintf(info->src, sizeof(info->src), "%s/%s/%s",
                                 status->ls_targets[info->target_no],
                                 SPECIAL_DIR, info->tfid);
                 else if (info->dest[0] == 0)
-                        snprintf(info->dest, PATH_MAX, "%s/%s/%s",
+                       snprintf(info->dest, sizeof(info->dest), "%s/%s/%s",
                                 status->ls_targets[info->target_no],
                                 SPECIAL_DIR, info->tfid);
 
-                rc1 = link(info->src, info->dest);
-                lr_debug(rc1?0:DINFO, "link: %s [to] %s; rc1=%d %s\n",
-                         info->src, info->dest, rc1, strerror(errno));
+               rc1 = link(info->src, info->dest);
+               lr_debug(DINFO, "link: %s [to] %s; rc1=%d %s\n",
+                        info->src, info->dest, rc1,
+                        strerror(rc1 ? errno : 0));
 
                 if (rc1)
                         rc = rc1;
@@ -1056,6 +1094,30 @@ int lr_link(struct lr_info *info)
        return rc;
 }
 
+int lr_set_dest_for_attr(struct lr_info *info)
+{
+       int rc;
+
+       snprintf(info->dest, sizeof(info->dest), "%s/%s",
+                status->ls_targets[info->target_no], info->path);
+       rc = access(info->dest, F_OK);
+       if (rc < 0)
+               rc = -errno;
+
+       if (rc != -ENOENT)
+               return rc;
+
+       snprintf(info->dest, sizeof(info->dest), "%s/%s/%s",
+                status->ls_targets[info->target_no], SPECIAL_DIR,
+                info->tfid);
+
+       rc = access(info->dest, F_OK);
+       if (rc < 0)
+               return -errno;
+
+       return 0;
+}
+
 /* Replicate file attributes */
 int lr_setattr(struct lr_info *info)
 {
@@ -1073,9 +1135,10 @@ int lr_setattr(struct lr_info *info)
 
         for (info->target_no = 0; info->target_no < status->ls_num_targets;
              info->target_no++) {
+               rc = lr_set_dest_for_attr(info);
+               if (rc < 0)
+                       continue;
 
-                snprintf(info->dest, PATH_MAX, "%s/%s",
-                         status->ls_targets[info->target_no], info->path);
                 lr_debug(DINFO, "setattr: %s %s %s", info->src, info->dest,
                          info->tfid);
 
@@ -1104,9 +1167,10 @@ int lr_setxattr(struct lr_info *info)
 
         for (info->target_no = 0; info->target_no < status->ls_num_targets;
              info->target_no++) {
+               rc = lr_set_dest_for_attr(info);
+               if (rc < 0)
+                       continue;
 
-                snprintf(info->dest, PATH_MAX, "%s/%s",
-                        status->ls_targets[info->target_no], info->path);
                 lr_debug(DINFO, "setxattr: %s %s %s\n", info->src, info->dest,
                          info->tfid);
 
@@ -1138,7 +1202,7 @@ int lr_parse_line(void *priv, struct lr_info *info)
        namelen = strnlen(changelog_rec_name(rec), rec->cr_namelen);
        if (copylen > namelen + 1)
                copylen = namelen + 1;
-       strlcpy(info->name, changelog_rec_name(rec), copylen);
+       snprintf(info->name, copylen, "%s", changelog_rec_name(rec));
 
        /* Don't use rnm if CLF_RENAME isn't set */
        rnm = changelog_rec_rename(rec);
@@ -1152,7 +1216,7 @@ int lr_parse_line(void *priv, struct lr_info *info)
                namelen = changelog_rec_snamelen(rec);
                if (copylen > namelen + 1)
                        copylen = namelen + 1;
-               strlcpy(info->sname, changelog_rec_sname(rec), copylen);
+               snprintf(info->sname, copylen, "%s", changelog_rec_sname(rec));
 
                if (verbose > 1)
                        printf("Rec %lld: %d %s %s\n", info->recno, info->type,
@@ -1192,11 +1256,9 @@ void lr_backup_log()
 
         if (logbackedup)
                 return;
-        snprintf(backupfile, PATH_MAX, "%s.old", statuslog);
+       snprintf(backupfile, sizeof(backupfile), "%s.old", statuslog);
         (void) rename(statuslog, backupfile);
         logbackedup = 1;
-
-        return;
 }
 
 /* Save replication parameters to a statuslog. */
@@ -1326,20 +1388,24 @@ int lr_read_log()
                 status->ls_last_recno = s->ls_last_recno;
 
        if (status->ls_registration[0] == '\0')
-               strlcpy(status->ls_registration, s->ls_registration,
-                       sizeof(status->ls_registration));
+               snprintf(status->ls_registration,
+                        sizeof(status->ls_registration), "%s",
+                        s->ls_registration);
 
        if (status->ls_mdt_device[0] == '\0')
-               strlcpy(status->ls_mdt_device, s->ls_mdt_device,
-                       sizeof(status->ls_mdt_device));
+               snprintf(status->ls_mdt_device,
+                        sizeof(status->ls_mdt_device), "%s",
+                        s->ls_mdt_device);
 
        if (status->ls_source_fs[0] == '\0')
-               strlcpy(status->ls_source_fs, s->ls_source_fs,
-                       sizeof(status->ls_source_fs));
+               snprintf(status->ls_source_fs,
+                        sizeof(status->ls_source_fs), "%s",
+                        s->ls_source_fs);
 
        if (status->ls_source[0] == '\0')
-               strlcpy(status->ls_source, s->ls_source,
-                       sizeof(status->ls_source));
+               snprintf(status->ls_source,
+                        sizeof(status->ls_source), "%s",
+                        s->ls_source);
 
  out:
         if (fd != -1)
@@ -1354,37 +1420,33 @@ int lr_read_log()
 int lr_clear_cl(struct lr_info *info, int force)
 {
        char            mdt_device[LR_NAME_MAXLEN + 1];
-       long long       rec;
        int             rc = 0;
 
         if (force || info->recno > status->ls_last_recno + CLEAR_INTERVAL) {
-                if (info->type == CL_RENAME)
-                        rec = info->recno + 1;
-                else
-                        rec = info->recno;
                 if (!noclear && !dryrun) {
                         /* llapi_changelog_clear modifies the mdt
                          * device name so make a copy of it until this
                          * is fixed.
-                        */
-                       strlcpy(mdt_device, status->ls_mdt_device,
-                               sizeof(mdt_device));
+                        */
+                       snprintf(mdt_device, sizeof(mdt_device), "%s",
+                                status->ls_mdt_device);
                         rc = llapi_changelog_clear(mdt_device,
                                                    status->ls_registration,
-                                                   rec);
+                                                  info->recno);
                         if (rc)
-                                printf("Changelog clear (%s, %s, %lld) "
-                                       "returned %d\n", status->ls_mdt_device,
-                                       status->ls_registration, rec, rc);
-                }
-                if (!rc && !dryrun) {
-                        status->ls_last_recno = rec;
-                        lr_write_log();
+                               printf("Changelog clear (%s, %s, %lld) "
+                                      "returned %d\n", status->ls_mdt_device,
+                                      status->ls_registration, info->recno,
+                                      rc);
+               }
 
-                }
-        }
+               if (!rc && !dryrun) {
+                       status->ls_last_recno = info->recno;
+                       lr_write_log();
+               }
+       }
 
-        return rc;
+       return rc;
 }
 
 /* Locate a usable version of rsync. At this point we'll use any
@@ -1395,12 +1457,12 @@ int lr_locate_rsync()
         int len;
 
         /* Locate rsync */
-        snprintf(rsync, PATH_MAX, "%s -p %s", TYPE, RSYNC);
+       snprintf(rsync, sizeof(rsync), "%s -p %s", TYPE, RSYNC);
         fp = popen(rsync, "r");
         if (fp == NULL)
                 return -1;
 
-        if (fgets(rsync, PATH_MAX, fp) == NULL) {
+       if (fgets(rsync, sizeof(rsync), fp) == NULL) {
                 fclose(fp);
                 return -1;
         }
@@ -1411,12 +1473,12 @@ int lr_locate_rsync()
         fclose(fp);
 
         /* Determine the version of rsync */
-        snprintf(rsync_ver, PATH_MAX, "%s --version", rsync);
+       snprintf(rsync_ver, sizeof(rsync_ver), "%s --version", rsync);
         fp = popen(rsync_ver, "r");
         if (fp == NULL)
                 return -1;
 
-        if (fgets(rsync_ver, PATH_MAX, fp) == NULL) {
+       if (fgets(rsync_ver, sizeof(rsync_ver), fp) == NULL) {
                 fclose(fp);
                 return -1;
         }
@@ -1445,7 +1507,8 @@ void lr_print_status(struct lr_info *info)
         if (statuslog != NULL)
                 printf("Statuslog: %s\n", statuslog);
         printf("Changelog registration: %s\n", status->ls_registration);
-        printf("Starting changelog record: "LPD64"\n", status->ls_last_recno);
+       printf("Starting changelog record: %jd\n",
+              (uintmax_t)status->ls_last_recno);
         if (noxattr)
                 printf("Replicate xattrs: no\n");
         if (noclear)
@@ -1485,9 +1548,18 @@ int lr_replicate()
                         "mountpoint.\n");
                goto out;
         }
-        if (status->ls_mdt_device[0] == '\0')
-                snprintf(status->ls_mdt_device, LR_NAME_MAXLEN, "%s%s",
-                        status->ls_source_fs, DEFAULT_MDT);
+
+       if (status->ls_mdt_device[0] == '\0') {
+               int len;
+
+               len = snprintf(status->ls_mdt_device,
+                              sizeof(status->ls_mdt_device), "%s%s",
+                              status->ls_source_fs, DEFAULT_MDT);
+               if (len >= sizeof(status->ls_mdt_device)) {
+                       rc = -E2BIG;
+                       goto out;
+               }
+       }
 
         ext = calloc(1, sizeof(struct lr_info));
        if (ext == NULL) {
@@ -1496,8 +1568,8 @@ int lr_replicate()
        }
 
         for (i = 0, xattr_not_supp = 0; i < status->ls_num_targets; i++) {
-                snprintf(info->dest, PATH_MAX, "%s/%s", status->ls_targets[i],
-                        SPECIAL_DIR);
+               snprintf(info->dest, sizeof(info->dest), "%s/%s",
+                        status->ls_targets[i], SPECIAL_DIR);
                 rc = mkdir(info->dest, 0777);
                 if (rc == -1 && errno != EEXIST) {
                         fprintf(stderr, "Error writing to target path %s.\n",
@@ -1520,14 +1592,27 @@ int lr_replicate()
 
        /* Open changelogs for consumption*/
        rc = llapi_changelog_start(&changelog_priv,
-                                  CHANGELOG_FLAG_BLOCK | CHANGELOG_FLAG_JOBID,
-                                  status->ls_source_fs, status->ls_last_recno);
+                               CHANGELOG_FLAG_BLOCK |
+                               CHANGELOG_FLAG_JOBID |
+                               CHANGELOG_FLAG_EXTRA_FLAGS,
+                               status->ls_mdt_device, status->ls_last_recno);
         if (rc < 0) {
                 fprintf(stderr, "Error opening changelog file for fs %s.\n",
                         status->ls_source_fs);
                goto out;
         }
 
+       rc = llapi_changelog_set_xflags(changelog_priv,
+                                       CHANGELOG_EXTRA_FLAG_UIDGID |
+                                       CHANGELOG_EXTRA_FLAG_NID |
+                                       CHANGELOG_EXTRA_FLAG_OMODE |
+                                       CHANGELOG_EXTRA_FLAG_XATTR);
+       if (rc < 0) {
+               fprintf(stderr, "Error setting xflag in changelog for fs %s.\n",
+                       status->ls_source_fs);
+               goto out;
+       }
+
         while (!quit && lr_parse_line(changelog_priv, info) == 0) {
                 rc = 0;
                if (info->type == CL_RENAME && !info->is_extended) {
@@ -1541,15 +1626,20 @@ int lr_replicate()
                        memcpy(info->spfid, info->pfid, sizeof(info->spfid));
                        memcpy(info->tfid, ext->tfid, sizeof(info->tfid));
                        memcpy(info->pfid, ext->pfid, sizeof(info->pfid));
-                       strlcpy(info->sname, info->name, sizeof(info->sname));
-                       strlcpy(info->name, ext->name, sizeof(info->name));
+                       snprintf(info->sname, sizeof(info->sname), "%s",
+                                info->name);
+                       snprintf(info->name, sizeof(info->name), "%s",
+                                ext->name);
                        info->is_extended = 1;
+                       info->recno = ext->recno; /* For lr_clear_cl(). */
                }
 
                 if (dryrun)
                         continue;
 
-               DEBUG_ENTRY(info);
+               lr_debug(DTRACE, "***** Start %lld %s (%d) %s %s %s *****\n",
+                        info->recno, changelog_type2str(info->type),
+                        info->type, info->tfid, info->pfid, info->name);
 
                 switch(info->type) {
                 case CL_CREATE:
@@ -1572,12 +1662,14 @@ int lr_replicate()
                 case CL_SETATTR:
                         rc = lr_setattr(info);
                         break;
-                case CL_XATTR:
+               case CL_SETXATTR:
                         rc = lr_setxattr(info);
                         break;
                case CL_CLOSE:
                case CL_EXT:
                case CL_OPEN:
+               case CL_GETXATTR:
+               case CL_DN_OPEN:
                case CL_LAYOUT:
                case CL_MARK:
                        /* Nothing needs to be done for these entries */
@@ -1585,7 +1677,11 @@ int lr_replicate()
                default:
                        break;
                }
-               DEBUG_EXIT(info, rc);
+
+               lr_debug(DTRACE, "##### End %lld %s (%d) %s %s %s rc=%d #####\n",
+                        info->recno, changelog_type2str(info->type),
+                        info->type, info->tfid, info->pfid, info->name, rc);
+
                 if (rc && rc != -ENOENT) {
                         lr_print_failure(info, rc);
                         errors++;
@@ -1593,10 +1689,6 @@ int lr_replicate()
                                 break;
                 }
                 lr_clear_cl(info, 0);
-                if (debug) {
-                        bzero(info, sizeof(struct lr_info));
-                        bzero(ext, sizeof(struct lr_info));
-                }
         }
 
         llapi_changelog_fini(&changelog_priv);
@@ -1649,8 +1741,8 @@ int main(int argc, char *argv[])
                         break;
                 case 's':
                         /* Assume absolute paths */
-                       strlcpy(status->ls_source, optarg,
-                               sizeof(status->ls_source));
+                       snprintf(status->ls_source, sizeof(status->ls_source),
+                                "%s", optarg);
                         break;
                 case 't':
                         status->ls_num_targets++;
@@ -1671,16 +1763,18 @@ int main(int argc, char *argv[])
                                 if (status == NULL)
                                         return -ENOMEM;
                         }
-                       strlcpy(status->ls_targets[status->ls_num_targets - 1],
-                               optarg, sizeof(status->ls_targets[0]));
+                       snprintf(status->ls_targets[status->ls_num_targets - 1],
+                                sizeof(status->ls_targets[0]), "%s", optarg);
                        break;
                case 'm':
-                       strlcpy(status->ls_mdt_device, optarg,
-                               sizeof(status->ls_mdt_device));
+                       snprintf(status->ls_mdt_device,
+                                sizeof(status->ls_mdt_device),
+                                "%s", optarg);
                        break;
                case 'u':
-                       strlcpy(status->ls_registration, optarg,
-                               sizeof(status->ls_registration));
+                       snprintf(status->ls_registration,
+                                sizeof(status->ls_registration),
+                                "%s", optarg);
                         break;
                 case 'l':
                         statuslog = optarg;
@@ -1770,13 +1864,6 @@ int main(int argc, char *argv[])
                 return -1;
         }
 
-        /* This plumbing is needed for some of the ioctls behind
-           llapi calls to work. */
-        if (obd_initialize(argc, argv) < 0) {
-                fprintf(stderr, "obd_initialize failed.\n");
-                exit(-1);
-        }
-
         rc = lr_locate_rsync();
         if (use_rsync && rc != 0) {
                 fprintf(stderr, "Error: unable to locate %s.\n", RSYNC);