--- /dev/null
+#!/bin/bash
+#
+# Run select tests by setting ONLY, or as arguments to the script.
+# Skip specific tests by setting EXCEPT.
+#
+# Run test by setting NOSETUP=true when ltest has setup env for us
+set -e
+
+SRCDIR=`dirname $0`
+export PATH=$PWD/$SRCDIR:$SRCDIR:$PWD/$SRCDIR/../utils:$PATH:/sbin
+
+ONLY=${ONLY:-"$*"}
+ALWAYS_EXCEPT="$LREPLICATE_EXCEPT"
+# bug number for skipped test: -
+# UPDATE THE COMMENT ABOVE WITH BUG NUMBERS WHEN CHANGING ALWAYS_EXCEPT!
+
+[ "$ALWAYS_EXCEPT$EXCEPT" ] && \
+ echo "Skipping tests: `echo $ALWAYS_EXCEPT $EXCEPT`"
+
+KILL=/bin/kill
+
+TMP=${TMP:-/tmp}
+LREPL_LOG=$TMP/lreplicate.log
+ORIG_PWD=${PWD}
+
+LUSTRE=${LUSTRE:-$(cd $(dirname $0)/..; echo $PWD)}
+. $LUSTRE/tests/test-framework.sh
+init_test_env $@
+. ${CONFIG:=$LUSTRE/tests/cfg/$NAME.sh}
+
+
+REPLLOG=${TESTSUITELOG:-$TMP/$(basename $0 .sh).log}
+
+[ "$REPLLOG" ] && rm -f $REPLLOG || true
+
+check_and_setup_lustre
+
+DIR=${DIR:-$MOUNT}
+assert_DIR
+
+
+build_test_filter
+
+export LREPLICATE=${LREPLICATE:-"$LUSTRE/utils/lreplicate"}
+[ ! -f "$LREPLICATE" ] && export LREPLICATE=$(which lreplicate)
+
+# control the time of tests
+DBENCH_TIME=${DBENCH_TIME:-60} # No of seconds to run dbench
+TGT=/tmp/target
+TGT2=/tmp/target2
+MDT0=$($LCTL get_param -n mdc.*.mds_server_uuid | \
+ awk '{gsub(/_UUID/,""); print $1}' | head -1)
+
+init_changelog() {
+ CL_USER=$(do_facet $SINGLEMDS lctl --device $MDT0 changelog_register -n)
+ echo $MDT0: Registered changelog user $CL_USER
+ CL_USERS=$(( $(do_facet $SINGLEMDS lctl get_param -n \
+ mdd.$MDT0.changelog_users | wc -l) - 2 ))
+ [ $CL_USERS -ne 1 ] && \
+ echo "Other changelog users present ($CL_USERS)"
+}
+
+init_src() {
+ rm -rf $TGT/$tdir $TGT/d*.lreplicate-test 2> /dev/null
+ rm -rf $TGT2/$tdir $TGT2/d*.lreplicate-test 2> /dev/null
+ rm -rf ${DIR}/$tdir $DIR/d*.lreplicate-test ${DIR}/tgt 2> /dev/null
+ rm -f $LREPL_LOG
+ mkdir -p $TGT
+ mkdir -p $TGT2
+ if [ $? -ne 0 ]; then
+ error "Failed to create target: " $TGT
+ fi
+}
+
+cleanup_src_tgt() {
+ rm -rf $TGT/$tdir
+ rm -rf $DIR/$tdir
+ rm -rf $DIR/tgt
+}
+
+fini_changelog() {
+ $LFS changelog_clear $MDT0 $CL_USER 0
+ do_facet $SINGLEMDS lctl --device $MDT0 changelog_deregister $CL_USER
+}
+
+check_xattr() {
+ local tgt=$1
+ local xattr="yes"
+ touch $tgt
+ setfattr -n user.foo -v 'bar' $tgt 2> /dev/null
+ if [ $? -ne 0 ]; then
+ xattr="no"
+ fi
+ rm -f $tgt
+ echo $xattr
+}
+
+check_diff() {
+ if [ -e $1 -o -e $2 ]; then
+ diff -rq -x "dev1" $1 $2
+ local RC=$?
+ if [ $RC -ne 0 ]; then
+ error "Failure in replication; differences found."
+ fi
+ fi
+}
+
+# Test 1 - test basic operations
+test_1() {
+ init_src
+ init_changelog
+ local xattr=`check_xattr $TGT/foo`
+
+ # Directory create
+ mkdir -p ${DIR}/$tdir
+ mkdir $DIR/$tdir/d1
+ mkdir $DIR/$tdir/d2
+
+ # File create
+ touch $DIR/$tdir/file1
+ cp /etc/hosts $DIR/$tdir/d1/
+ touch $DIR/$tdir/d1/"space in filename"
+ touch $DIR/$tdir/d1/file2
+
+ # File rename
+ mv $DIR/$tdir/d1/file2 $DIR/$tdir/d2/file3
+
+ # File and directory delete
+ touch $DIR/$tdir/d1/file4
+ mkdir $DIR/$tdir/d1/del
+ touch $DIR/$tdir/d1/del/del1
+ touch $DIR/$tdir/d1/del/del2
+ rm -rf $DIR/$tdir/d1/del
+ rm $DIR/$tdir/d1/file4
+
+ #hard and soft links
+ cat /etc/hosts > $DIR/$tdir/d1/link1
+ ln $DIR/$tdir/d1/link1 $DIR/$tdir/d1/link2
+ ln -s $DIR/$tdir/d1/link1 $DIR/$tdir/d1/link3
+
+ # Device files
+ mknod $DIR/$tdir/dev1 b 8 1
+
+ # Replicate
+ echo "Replication #1"
+ $LREPLICATE -s $DIR -t $TGT -t $TGT2 -m $MDT0 -u $CL_USER -l $LREPL_LOG -v
+
+ # Set attributes
+ chmod 000 $DIR/$tdir/d2/file3
+ chown nobody:nobody $DIR/$tdir/d2/file3
+
+ # Set xattrs
+ if [ "$xattr" == "yes" ]; then
+ touch $DIR/$tdir/file5
+ setfattr -n user.foo -v 'bar' $DIR/$tdir/file5
+ fi
+
+ echo "Replication #2"
+ $LREPLICATE -l $LREPL_LOG -v
+
+ if [ "$xattr" == "yes" ]; then
+ local xval1=$(getfattr -n user.foo --absolute-names --only-values \
+ $TGT/$tdir/file5)
+ local xval2=$(getfattr -n user.foo --absolute-names --only-values \
+ $TGT2/$tdir/file5)
+ fi
+
+ RC=0
+ if [[ ! -b $TGT/$tdir/dev1 ]] || [[ ! -b $TGT2/$tdir/dev1 ]]; then
+ ls -l $DIR/$tdir/dev1 $TGT/$tdir/dev1 $TGT2/$tdir/dev1
+ error "Error replicating block devices"
+ RC=1
+ elif [[ "$xattr" == "yes" ]] &&
+ [[ "$xval1" != "bar" || "$xval2" != "bar" ]]; then
+ error "Error in replicating xattrs. $xval1, $xval2"
+ RC=1
+ fi
+
+ # Use diff to compare the source and the destination
+ check_diff $DIR/$tdir $TGT/$tdir
+ check_diff $DIR/$tdir $TGT2/$tdir
+
+ fini_changelog
+ cleanup_src_tgt
+ return $RC
+
+}
+run_test 1 "Simple Replication"
+
+# Test 2a - Replicate files created by dbench
+test_2a() {
+ [ "$SLOW" = "no" ] && skip "Skipping slow test" && return
+ init_src
+ init_changelog
+
+ # Run dbench
+ sh rundbench -C -D $DIR/$tdir 2 -t $DBENCH_TIME || error "dbench failed!"
+
+ # Replicate the changes to $TGT
+ $LREPLICATE -s $DIR -t $TGT -t $TGT2 -m $MDT0 -u $CL_USER -l $LREPL_LOG -v
+
+ # Use diff to compare the source and the destination
+ check_diff $DIR/$tdir $TGT/$tdir
+ check_diff $DIR/$tdir $TGT2/$tdir
+
+ fini_changelog
+ cleanup_src_tgt
+ return 0
+}
+run_test 2a "Replicate files created by dbench."
+
+
+# Test 2b - Replicate files changed by dbench.
+test_2b() {
+ [ "$SLOW" = "no" ] && skip "Skipping slow test" && return
+
+ init_src
+ init_changelog
+
+ # Run dbench
+ sh rundbench -C -D $DIR/$tdir 2 -t $DBENCH_TIME &
+ sleep 20
+
+ local child_pid=$(pgrep dbench)
+ echo PIDs: $child_pid
+ echo Stopping dbench
+ $KILL -SIGSTOP $child_pid
+
+ echo Starting replication
+ $LREPLICATE -s $DIR -t $TGT -t $TGT2 -m $MDT0 -u $CL_USER -l $LREPL_LOG -v
+ check_diff $DIR/$tdir $TGT/$tdir
+
+ echo Resuming dbench
+ $KILL -SIGCONT $child_pid
+ sleep 10
+
+ echo Stopping dbench
+ $KILL -SIGSTOP $child_pid
+
+ echo Starting replication
+ $LREPLICATE -l $LREPL_LOG -v
+ check_diff $DIR/$tdir $TGT/$tdir
+
+ echo "Wait for dbench to finish"
+ $KILL -SIGCONT $child_pid
+ wait
+
+ # Replicate the changes to $TGT
+ echo Starting replication
+ $LREPLICATE -l $LREPL_LOG -v
+
+ check_diff $DIR/$tdir $TGT/$tdir
+ check_diff $DIR/$tdir $TGT2/$tdir
+
+ fini_changelog
+ cleanup_src_tgt
+ return 0
+}
+run_test 2b "Replicate files changed by dbench."
+
+# Test 2c - Replicate files while dbench is running
+test_2c() {
+ [ "$SLOW" = "no" ] && skip "Skipping slow test" && return
+ init_src
+ init_changelog
+
+ # Run dbench
+ sh rundbench -C -D $DIR/$tdir 2 -t $DBENCH_TIME &
+
+ # Replicate the changes to $TGT
+ sleep 10 # give dbench a headstart
+ local quit=0
+ while [ $quit -le 1 ];
+ do
+ echo "Running lreplicate"
+ $LREPLICATE -s $DIR -t $TGT -t $TGT2 -m ${mds1_svc} -u $CL_USER -l $LREPL_LOG -v
+ sleep 5
+ pgrep dbench
+ if [ $? -ne 0 ]; then
+ quit=$(expr $quit + 1)
+ fi
+ done
+
+ # Use diff to compare the source and the destination
+ check_diff $DIR/$tdir $TGT/$tdir
+ check_diff $DIR/$tdir $TGT2/$tdir
+
+ fini_changelog
+ cleanup_src_tgt
+ return 0
+}
+run_test 2c "Replicate files while dbench is running."
+
+# Test 3a - Replicate files created by createmany
+test_3a() {
+ [ "$SLOW" = "no" ] && skip "Skipping slow test" && return
+
+ init_src
+ init_changelog
+
+ local numfiles=1000
+ mkdir -p ${DIR}/$tdir
+ createmany -o $DIR/$tdir/$tfile $numfiles || error "createmany failed!"
+
+ # Replicate the changes to $TGT
+ $LREPLICATE -s $DIR -t $TGT -t $TGT2 -m $MDT0 -u $CL_USER -l $LREPL_LOG -v
+ check_diff $DIR/$tdir $TGT/$tdir
+ check_diff $DIR/$tdir $TGT2/$tdir
+
+ fini_changelog
+ cleanup_src_tgt
+ return 0
+}
+run_test 3a "Replicate files created by createmany"
+
+
+# Test 3b - Replicate files created by writemany
+test_3b() {
+ [ "$SLOW" = "no" ] && skip "Skipping slow test" && return
+
+ init_src
+ init_changelog
+
+ local time=60
+ local threads=5
+ mkdir -p ${DIR}/$tdir
+ writemany -q -a $DIR/$tdir/$tfile $time $threads || error "writemany failed!"
+
+ # Replicate the changes to $TGT
+ $LREPLICATE -s $DIR -t $TGT -t $TGT2 -m $MDT0 -u $CL_USER -l $LREPL_LOG -v
+
+ check_diff $DIR/$tdir $TGT/$tdir
+ check_diff $DIR/$tdir $TGT2/$tdir
+
+ fini_changelog
+ cleanup_src_tgt
+ return 0
+}
+run_test 3b "Replicate files created by writemany"
+
+# Test 3c - Replicate files created by createmany/unlinkmany
+test_3c() {
+ [ "$SLOW" = "no" ] && skip "Skipping slow test" && return
+
+ init_src
+ init_changelog
+
+ local numfiles=1000
+ mkdir -p ${DIR}/$tdir
+ createmany -o $DIR/$tdir/$tfile $numfiles || error "createmany failed!"
+ unlinkmany $DIR/$tdir/$tfile $numfiles || error "unlinkmany failed!"
+
+ # Replicate the changes to $TGT
+ $LREPLICATE -s $DIR -t $TGT -t $TGT2 -m $MDT0 -u $CL_USER -l $LREPL_LOG -v
+ check_diff $DIR/$tdir $TGT/$tdir
+ check_diff $DIR/$tdir $TGT2/$tdir
+
+ fini_changelog
+ cleanup_src_tgt
+ return 0
+}
+run_test 3c "Replicate files created by createmany/unlinkmany"
+
+# Test 4 - Replicate files created by iozone
+test_4() {
+ [ "$SLOW" = "no" ] && skip "Skipping slow test" && return
+
+ which iozone > /dev/null 2>&1
+ if [ $? -ne 0 ]; then
+ skip "iozone not found. Skipping test"
+ return
+ fi
+
+ init_src
+ init_changelog
+
+ mkdir -p ${DIR}/$tdir
+ END_RUN_FILE=${DIR}/$tdir/run LOAD_PID_FILE=${DIR}/$tdir/pid \
+ MOUNT=${DIR}/$tdir run_iozone.sh &
+ sleep 30
+ child_pid=$(pgrep iozone)
+ $KILL -SIGSTOP $child_pid
+
+ # Replicate the changes to $TGT
+ $LREPLICATE -s $DIR -t $TGT -t $TGT2 -m $MDT0 -u $CL_USER -l $LREPL_LOG -v
+ check_diff $DIR/$tdir $TGT/$tdir
+ check_diff $DIR/$tdir $TGT2/$tdir
+
+ $KILL -SIGCONT $child_pid
+ sleep 60
+ $KILL -SIGKILL $child_pid
+
+ $LREPLICATE -l $LREPL_LOG -v
+ check_diff $DIR/$tdir $TGT/$tdir
+ check_diff $DIR/$tdir $TGT2/$tdir
+
+ fini_changelog
+ cleanup_src_tgt
+ return 0
+}
+run_test 4 "Replicate files created by iozone"
+
+# Test 5a - Stop / start lreplicate
+test_5a() {
+ [ "$SLOW" = "no" ] && skip "Skipping slow test" && return
+
+ init_src
+ init_changelog
+
+ NUMTEST=2000
+ mkdir -p ${DIR}/$tdir
+ createmany -o $DIR/$tdir/$tfile $NUMTEST
+
+ # Replicate the changes to $TGT
+
+ $LREPLICATE -s $DIR -t $TGT -t $TGT2 -m $MDT0 -u $CL_USER -l $LREPL_LOG -v &
+ local child_pid=$!
+ sleep 30
+ $KILL -SIGHUP $child_pid
+ wait
+ $LREPLICATE -l $LREPL_LOG -v
+
+ check_diff $DIR/$tdir $TGT/$tdir
+ check_diff $DIR/$tdir $TGT2/$tdir
+
+ fini_changelog
+ cleanup_src_tgt
+ return 0
+}
+run_test 5a "Stop / start lreplicate"
+
+# Test 5b - Kill / restart lreplicate
+test_5b() {
+ [ "$SLOW" = "no" ] && skip "Skipping slow test" && return
+
+ init_src
+ init_changelog
+
+ NUMTEST=2000
+ mkdir -p ${DIR}/$tdir
+ createmany -o $DIR/$tdir/$tfile $NUMTEST
+
+ # Replicate the changes to $TGT
+
+ $LREPLICATE -s $DIR -t $TGT -t $TGT2 -m $MDT0 -u $CL_USER -l $LREPL_LOG -v &
+ local child_pid=$!
+ sleep 30
+ $KILL -SIGKILL $child_pid
+ wait
+ $LREPLICATE -l $LREPL_LOG -v
+
+ check_diff $DIR/$tdir $TGT/$tdir
+ check_diff $DIR/$tdir $TGT2/$tdir
+
+ fini_changelog
+ cleanup_src_tgt
+ return 0
+}
+run_test 5b "Kill / restart lreplicate"
+
+# Test 6 - lreplicate large no of hard links
+test_6() {
+ init_src
+ init_changelog
+
+ local NUMLINKS=128
+ mkdir -p ${DIR}/$tdir
+ touch $DIR/$tdir/link0
+ local i=1
+ while [ $i -lt $NUMLINKS ];
+ do
+ ln $DIR/$tdir/link0 $DIR/$tdir/link${i}
+ i=$(expr $i + 1)
+ done
+
+ # Replicate the changes to $TGT
+ $LREPLICATE -s $DIR -t $TGT -t $TGT2 -m $MDT0 -u $CL_USER -l $LREPL_LOG -v
+ check_diff $DIR/$tdir $TGT/$tdir
+ check_diff $DIR/$tdir $TGT2/$tdir
+
+ local count1=$(ls -l $TGT/$tdir/link0 | sed -r 's/ +/ /g' | cut -f 2 -d ' ')
+ local count2=$(ls -l $TGT/$tdir/link0 | sed -r 's/ +/ /g' | cut -f 2 -d ' ')
+ if [[ $count1 -ne $NUMLINKS ]] || [[ $count2 -ne $NUMLINKS ]]; then
+ ls -l $TGT/$tdir/link0 $TGT2/$tdir/link0
+ error "Incorrect no of hard links found $count1, $count2"
+ fi
+ fini_changelog
+ cleanup_src_tgt
+ return 0
+}
+run_test 6 "lreplicate large no of hard links"
+
+# Test 7 - lreplicate stripesize
+test_7() {
+ init_src
+ init_changelog
+
+ local NUMFILES=100
+ mkdir -p ${DIR}/$tdir
+ lfs setstripe -c 2 ${DIR}/$tdir
+ createmany -o $DIR/$tdir/$tfile $NUMFILES
+
+ # To simulate replication to another lustre filesystem, replicate
+ # the changes to $DIR/tgt. Disable changelogs before replication
+ # so that the files created as part of replication are not logged.
+ do_facet $SINGLEMDS lctl set_param -n mdd.$MDT0.changelog off
+ mkdir $DIR/tgt
+
+ $LREPLICATE -s $DIR -t $DIR/tgt -m $MDT0 -u $CL_USER -l $LREPL_LOG -v
+ check_diff ${DIR}/$tdir $DIR/tgt/$tdir
+
+ local i=0
+ while [ $i -lt $NUMFILES ];
+ do
+ local count=$(( $(lfs getstripe -q $DIR/tgt/$tdir/${tfile}$i | wc -l) - 1))
+ if [ $count -ne 2 ]; then
+ error "Stripe size not replicated"
+ fi
+ i=$(expr $i + 1)
+ done
+ fini_changelog
+ cleanup_src_tgt
+ return 0
+}
+run_test 7 "lreplicate stripesize"
+
+# Test 8 - Replicate multiple file/directory moves
+test_8() {
+ init_src
+ init_changelog
+
+ mkdir -p ${DIR}/$tdir
+
+ for i in 1 2 3 4 5 6 7 8 9; do
+ mkdir $DIR/$tdir/d$i
+ for j in 1 2 3 4 5 6 7 8 9; do
+ mkdir $DIR/$tdir/d$i/d$i$j
+ createmany -o $DIR/$tdir/d$i/d$i$j/a 10 \
+ > /dev/null
+ mv $DIR/$tdir/d$i/d$i$j $DIR/$tdir/d$i/d0$i$j
+ createmany -o $DIR/$tdir/d$i/d0$i$j/b 10 \
+ > /dev/null
+ mv $DIR/$tdir/d$i/d0$i$j/a0 $DIR/$tdir/d$i/d0$i$j/c0
+ done
+ mv $DIR/$tdir/d$i $DIR/$tdir/d0$i
+ done
+
+ $LREPLICATE -s $DIR -t $TGT -m $MDT0 -u $CL_USER -l $LREPL_LOG -v
+
+ check_diff ${DIR}/$tdir $TGT/$tdir
+
+ fini_changelog
+ cleanup_src_tgt
+ return 0
+}
+run_test 8 "Replicate multiple file/directory moves"
+
+log "cleanup: ======================================================"
+cd $ORIG_PWD
+check_and_cleanup_lustre
+echo '=========================== finished ==============================='
+[ -f "$REPLOG" ] && cat $REPLLOG && grep -q FAIL $REPLLOG && exit 1 || true
+echo "$0: completed"
--- /dev/null
+/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
+ * vim:expandtab:shiftwidth=8:tabstop=8:
+ *
+ * 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 2009 Sun Microsystems, Inc. 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/utils/lreplicate.c
+ *
+ * Author: Kalpak Shah <Kalpak.Shah@Sun.COM>
+ * Author: Manoj Joseph <Manoj.Joseph@Sun.COM>
+ */
+
+/*
+ * - lreplicate is a tool for replicating a lustre filesystem.
+ *
+ * - The source-fs is a live lustre filesystem. It is not a
+ * snapshot. It is mounted and undergoing changes
+ *
+ * - The target-fs is a copy of the source-fs from the past. Let's
+ * call this point, the 'sync point'.
+ *
+ * - There is a changelog of all metadata operations that happened on
+ * the filesystem since the 'sync point'.
+ *
+ * - lreplicate replicates all the operations saved in the changelog
+ * on to the target filesystem to make it identical to the source.
+ *
+ * To facilitate replication, the lustre filesystem provides
+ * a) a way to get the current filesystem path of a given FID
+ * b) a way to open files by specifying its FID
+ *
+ * The changelog only has a limited amount of information.
+ * tfid - The FID of the target file
+ * pfid - The FID of the parent of the target file (at the time of
+ * the operation)
+ * name - The name of the target file (at the time of the operation)
+ *
+ * With just this information, it is not alwasy possible to determine
+ * the file paths for each operation. For instance, if pfid does not
+ * exist on the source-fs (due to a subsequent deletion), its path
+ * cannot be queried. In such cases, lreplicate keeps the files in a
+ * special directory ("/.lustrerepl"). Once all the operations in a
+ * changelog are replayed, all the files in this special directory
+ * will get moved to the location as in the source-fs.
+ *
+ * Shorthand used: f2p(tfid) = fid2path(tfid)
+ *
+ * The following are the metadata operations of interest.
+ * 1. creat
+ * If tfid is absent on the source-fs, ignore this operation
+ * If pfid is absent on the source-fs [or]
+ * if f2p(pfid) is not present on target-fs [or]
+ * if f2p(pfid)+name != f2p(tfid)
+ * creat .lustrerepl/tfid
+ * track [pfid,tfid,name]
+ * Else
+ * creat f2p[tfid]
+ *
+ * 2. remove
+ * If .lustrerepl/[tfid] is present on the target
+ * rm .lustrerepl/[tfid]
+ * Else if pfid is present on the source-fs,
+ * if f2p(pfid)+name is present,
+ * rm f2p(pfid)+name(pfid,name)
+ *
+ * 3. move (pfid1,name1) to (pfid2,name2)
+ * If pfid2 is present
+ * if pfid1 is also present, mv (pfid1,name1) to (pfid2,name2)
+ * else mv .lustrerepl/[tfid] to (pfid2,name2)
+ * If pfid2 is not present,
+ * if pfid1 is present, mv (pfid1,name1) .lustrerepl/[tfid]
+ * If moving out of .lustrerepl
+ * move out all its children in .lustrerepl.
+ * [pfid,tfid,name] tracked from (1) is used for this.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <getopt.h>
+#include <stdarg.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <errno.h>
+#include <limits.h>
+#include <utime.h>
+#include <sys/xattr.h>
+
+#include <libcfs/libcfs.h>
+#include <libcfs/libcfsutil.h>
+#include <lustre/liblustreapi.h>
+#include <lustre/lustre_idl.h>
+#include <lustre/lreplicate.h>
+
+#define REPLICATE_STATUS_VER 1
+#define CLEAR_INTERVAL 100
+#define DEFAULT_RSYNC_THRESHOLD 0xA00000 /* 10 MB */
+
+#define TYPE_STR_LEN 16
+
+#define DEFAULT_MDT "-MDT0000"
+#define SPECIAL_DIR ".lustrerepl"
+#define RSYNC "rsync"
+#define TYPE "type"
+
+/* Debug flags */
+#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. */
+struct lr_info {
+ long long recno;
+ int target_no;
+ enum changelog_rec_type type;
+ char pfid[LR_FID_STR_LEN];
+ char tfid[LR_FID_STR_LEN];
+ char name[PATH_MAX + 1];
+ char src[PATH_MAX + 1];
+ char dest[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;
+
+ /* Variables for querying the xattributes */
+ char *xlist;
+ size_t xsize;
+ char *xvalue;
+ size_t xvsize;
+};
+
+struct lr_parent_child_list {
+ struct lr_parent_child_log pc_log;
+ struct lr_parent_child_list *pc_next;
+};
+
+struct lreplicate_status *status;
+char *statuslog; /* Name of the status log file */
+int logbackedup;
+int noxattr; /* Flag to turn off replicating xattrs */
+int noclear; /* Flag to turn off clearing changelogs */
+int debug; /* Flag to turn debugging information on and off */
+int verbose; /* Verbose output */
+long long rec_count; /* No of changelog records that were processed */
+int errors;
+int dryrun;
+int use_rsync; /* Flag to turn on use of rsync to copy data */
+long long rsync_threshold = DEFAULT_RSYNC_THRESHOLD;
+int quit; /* Flag to stop processing the changelog; set on the
+ receipt of a signal */
+char rsync[PATH_MAX];
+char rsync_ver[PATH_MAX];
+struct lr_parent_child_list *parents;
+
+/* 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'},
+ {"debug", required_argument, 0, 'd'},
+ {0, 0, 0, 0}
+};
+
+/* Command line usage */
+void lr_usage()
+{
+ fprintf(stderr, "\tlreplicate -s <lustre_root_path> -t <target_path> "
+ "-m <mdt> -r <user id> -l <status log>\n"
+ "lreplicate can also pick up parameters from a "
+ "status log created earlier.\n"
+ "\tlreplicate -l <log_file>\n");
+}
+
+/* Print debug information. This is controlled by the value of the
+ global variable 'debug' */
+void lr_debug(int level, const char *fmt, ...)
+{
+ va_list ap;
+
+ if (level > debug)
+ return;
+
+ va_start(ap, fmt);
+ vprintf(fmt, ap);
+ va_end(ap);
+}
+
+
+void * lr_grow_buf(void *buf, int size)
+{
+ void *ptr;
+
+ ptr = realloc(buf, size);
+ if (ptr == NULL)
+ free(buf);
+ return ptr;
+}
+
+
+/* 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];
+
+ lr_debug(DTRACE, "Syncing data%s\n", info->tfid);
+
+ rc = stat(info->src, &st_src);
+ if (rc == -1) {
+ fprintf(stderr, "Error: Unable to stat src=%s %s\n",
+ info->src, info->name);
+ if (errno == ENOENT)
+ return 0;
+ else
+ return -errno;
+ }
+ rc = stat(info->dest, &st_dest);
+ if (rc == -1) {
+ fprintf(stderr, "Error: Unable to stat dest=%s\n",
+ info->dest);
+ return -errno;
+ }
+
+ 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) {
+ rc = -errno;
+ } else if (WIFEXITED(status)) {
+ status = WEXITSTATUS(status);
+ if (!status)
+ rc = 0;
+ else if (status == 23 || status == 24)
+ /* Error due to vanished source files;
+ Ignore this error*/
+ rc = 0;
+ else
+ rc = -EINVAL;
+ if (status)
+ lr_debug(DINFO, "rsync %s exited with %d %d\n",
+ info->src, status, rc);
+ } else {
+ rc = -EINTR;
+ }
+ } else {
+ lr_debug(DTRACE, "Not syncing %s and %s %s\n", info->src,
+ info->dest, info->tfid);
+ }
+
+ return rc;
+}
+
+int lr_copy_data(struct lr_info *info)
+{
+ int fd_src = -1;
+ int fd_dest = -1;
+ int bufsize;
+ int rsize;
+ int rc = 0;
+ struct stat st_src;
+ struct stat st_dest;
+
+ fd_src = open(info->src, O_RDONLY);
+ if (fd_src == -1)
+ return -errno;
+ if (fstat(fd_src, &st_src) == -1 ||
+ stat(info->dest, &st_dest) == -1)
+ goto out;
+
+ if (st_src.st_mtime == st_dest.st_mtime &&
+ st_src.st_size == st_dest.st_size)
+ goto out;
+
+ if (st_src.st_size > rsync_threshold && rsync[0] != '\0') {
+ /* It is more efficient to use rsync to replicate
+ large files. Any file larger than rsync_threshold
+ is handed off to rsync. */
+ lr_debug(DTRACE, "Using rsync to replicate %s\n", info->tfid);
+ rc = lr_rsync_data(info);
+ goto out;
+ }
+
+ fd_dest = open(info->dest, O_WRONLY | O_TRUNC, st_src.st_mode);
+ if (fd_dest == -1) {
+ rc = -errno;
+ goto out;
+ }
+ bufsize = st_dest.st_blksize;
+
+ if (info->bufsize < bufsize) {
+ /* Grow buffer */
+ info->buf = lr_grow_buf(info->buf, bufsize);
+ if (info->buf == NULL) {
+ rc = -ENOMEM;
+ goto out;
+ }
+ info->bufsize = bufsize;
+ }
+
+ while (1) {
+ rsize = read(fd_src, info->buf, bufsize);
+ if (rsize == 0) {
+ break;
+ } else if (rsize < 0) {
+ rc = -errno;
+ goto out;
+ }
+ errno = 0;
+ if (write(fd_dest, info->buf, rsize) != rsize) {
+ if (errno != 0)
+ rc = -errno;
+ else
+ rc = -EINTR;
+ }
+ }
+ fsync(fd_dest);
+
+out:
+ if (fd_src != -1)
+ close(fd_src);
+ if (fd_dest != -1)
+ close(fd_dest);
+
+ return rc;
+}
+
+/* Copy data from source to destination */
+int lr_sync_data(struct lr_info *info)
+{
+ if (use_rsync)
+ return lr_rsync_data(info);
+ else
+ return lr_copy_data(info);
+}
+
+/* Copy all attributes from file src to file dest */
+int lr_copy_attr(char *src, char *dest)
+{
+ struct stat st;
+ struct utimbuf time;
+
+ if (stat(src, &st) == -1 ||
+ chmod(dest, st.st_mode) == -1 ||
+ chown(dest, st.st_uid, st.st_gid) == -1)
+ return -errno;
+
+ time.actime = st.st_atime;
+ time.modtime = st.st_mtime;
+ if (utime(dest, &time) == -1)
+ return -errno;
+ return 0;
+}
+
+/* Copy all xattrs from file info->src to info->dest */
+int lr_copy_xattr(struct lr_info *info)
+{
+ size_t size = info->xsize;
+ int start;
+ int len;
+ int rc;
+
+ if (noxattr)
+ return 0;
+
+ errno = 0;
+ rc = llistxattr(info->src, info->xlist, size);
+ lr_debug(DTRACE, "llistxattr(%s,%p) returned %d, errno=%d\n",
+ info->src, info->xlist, rc, errno);
+ if ((rc > 0 && info->xlist == NULL) || errno == ERANGE) {
+ size = rc > PATH_MAX ? rc : PATH_MAX;
+ info->xlist = lr_grow_buf(info->xlist, size);
+ if (info->xlist == NULL)
+ return -ENOMEM;
+ info->xsize = size;
+ rc = llistxattr(info->src, info->xlist, size);
+ lr_debug(DTRACE, "llistxattr %s returned %d, errno=%d\n",
+ info->src, rc, errno);
+ }
+ if (rc < 0)
+ return rc;
+
+ len = rc;
+ start = 0;
+ while (start < len) {
+ size = info->xvsize;
+ rc = lgetxattr(info->src, info->xlist + start,
+ info->xvalue, size);
+ if (info->xvalue == NULL || errno == ERANGE) {
+ size = rc > PATH_MAX ? rc : PATH_MAX;
+ info->xvalue = lr_grow_buf(info->xvalue, size);
+ if (info->xvalue == NULL)
+ return -ENOMEM;
+ info->xvsize = size;
+ rc = lgetxattr(info->src, info->xlist + start,
+ info->xvalue, size);
+ }
+ lr_debug(DTRACE, "\t(%s,%d) rc=%p\n", info->xlist + start,
+ info->xvalue, rc);
+ if (rc > 0) {
+ size = rc;
+ rc = lsetxattr(info->dest, info->xlist + start,
+ info->xvalue, size, 0);
+ lr_debug(DTRACE, "\tlsetxattr(), rc=%d, errno=%d\n",
+ rc, errno);
+ if (rc == -1) {
+ if (errno != ENOTSUP) {
+ fprintf(stderr, "Error replicating "
+ " xattr for %s: %d\n",
+ info->dest, errno);
+ errors++;
+ }
+ rc = 0;
+ }
+ }
+ start += strlen(info->xlist + start) + 1;
+ }
+
+ lr_debug(DINFO, "setxattr: %s %s\n", info->src, info->dest);
+
+ return rc;
+}
+
+/* Retrieve the filesystem path for a given FID and a given
+ linkno. The path is returned in info->path */
+int lr_get_path_ln(struct lr_info *info, char *fidstr, int linkno)
+{
+ long long recno = -1;
+ int rc;
+
+ rc = llapi_fid2path(status->ls_mdt_device, fidstr, info->path,
+ PATH_MAX, &recno, &linkno);
+ if (rc < 0 && rc != -ENOENT) {
+ fprintf(stderr, "fid2path error: (%s, %s) %d %s\n",
+ status->ls_mdt_device, fidstr,
+ -rc, strerror(errno = -rc));
+ }
+
+ return rc;
+}
+
+/* Retrieve the filesystem path for a given FID. The path is returned
+ in info->path */
+int lr_get_path(struct lr_info *info, char *fidstr)
+{
+ return lr_get_path_ln(info, fidstr, 0);
+}
+
+/* Generate the path for opening by FID */
+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, mdd_dot_lustre_name,
+ fidstr + 2);
+ return;
+}
+
+/* Read the symlink information into 'info->link' */
+int lr_get_symlink(struct lr_info *info)
+{
+ int rc;
+ char *link;
+
+ lr_get_FID_PATH(status->ls_source, info->tfid, info->src, PATH_MAX);
+ rc = readlink(info->src, info->linktmp, PATH_MAX);
+ if (rc > 0)
+ info->linktmp[rc] = '\0';
+ else
+ return rc;
+ lr_debug(DTRACE, "symlink: readlink returned %s\n", info->linktmp);
+
+ if (strncmp(info->linktmp, status->ls_source,
+ 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",
+ status->ls_targets[info->target_no], link);
+ link = info->src;
+ } else {
+ link = info->linktmp;
+ }
+ strncpy(info->link, link, PATH_MAX);
+ info->link[PATH_MAX] = '\0';
+
+ return rc;
+}
+
+/* Create file/directory/device file/symlink. */
+int lr_mkfile(struct lr_info *info)
+{
+ struct stat st;
+ int rc = 0;
+
+ errno = 0;
+ lr_debug(DINFO, "mkfile(%d) %s \n", info->type, info->dest);
+ if (info->type == CL_MKDIR) {
+ rc = mkdir(info->dest, 0777);
+ } else if (info->type == CL_SOFTLINK) {
+ lr_get_symlink(info);
+ rc = symlink(info->link, info->dest);
+ } else if (info->type == CL_MKNOD) {
+ lr_get_FID_PATH(status->ls_source, info->tfid,
+ info->src, PATH_MAX);
+ rc = stat(info->src, &st);
+ if (rc == -1) {
+ if (errno == ENOENT)
+ return 0;
+ else
+ return -errno;
+ }
+ rc = mknod(info->dest, st.st_mode, st.st_rdev);
+ } else {
+ rc = mknod(info->dest, S_IFREG | 0777, 0);
+ }
+ if (rc)
+ return -errno;
+
+ /* Sync data and attributes */
+ if (info->type == CL_CREATE || info->type == CL_MKDIR) {
+ lr_debug(DTRACE, "Syncing data and attributes %s\n",
+ info->tfid);
+ (void) lr_copy_xattr(info);
+ if (info->type == CL_CREATE)
+ rc = lr_sync_data(info);
+ if (!rc)
+ rc = lr_copy_attr(info->src, info->dest);
+
+ if (rc == -ENOENT)
+ /* Source file has disappeared. Not an error. */
+ rc = 0;
+ } else {
+ lr_debug(DTRACE, "Not syncing data and attributes %s\n",
+ info->tfid);
+ }
+
+ return rc;
+}
+
+int lr_add_pc(const char *pfid, const char *tfid, const char *name)
+{
+ struct lr_parent_child_list *p;
+
+ p = calloc(1, sizeof(*p));
+ if (!p)
+ return -ENOMEM;
+ strcpy(p->pc_log.pcl_pfid, pfid + 2);
+ strcpy(p->pc_log.pcl_tfid, tfid + 2);
+ strcpy(p->pc_log.pcl_name, name);
+
+ p->pc_next = parents;
+ parents = p;
+ return 0;
+}
+
+void lr_cascade_move(const char *fid, const char *dest, struct lr_info *info)
+{
+ struct lr_parent_child_list *curr, *prev;
+ char *d;
+ 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);
+ rc = rename(info->src, d);
+ if (rc == -1) {
+ fprintf(stderr, "Error renaming file "
+ " %s to %s: %d\n",
+ info->src, d, errno);
+ errors++;
+ }
+ lr_cascade_move(curr->pc_log.pcl_tfid, d, info);
+ if (curr == parents)
+ parents = curr->pc_next;
+ else
+ prev->pc_next = curr->pc_next;
+ free(curr);
+ prev = curr = parents;
+
+ } else {
+ prev = curr;
+ curr = curr->pc_next;
+ }
+ }
+
+ free(d);
+}
+
+/* remove [info->pfid, ext->tfid] from parents */
+int lr_remove_pc(const char *pfid, const char *tfid)
+{
+ struct lr_parent_child_list *curr, *prev;
+
+ for (prev = curr = parents; curr; prev = curr, curr = curr->pc_next) {
+ if (strcmp(curr->pc_log.pcl_pfid, pfid + 2) == 0 &&
+ strcmp(curr->pc_log.pcl_tfid, tfid + 2) == 0) {
+ if (curr == parents)
+ parents = curr->pc_next;
+ else
+ prev->pc_next = curr->pc_next;
+ free(curr);
+ break;
+ }
+ }
+ return 0;
+}
+
+/* Create file under SPECIAL_DIR with its tfid as its name. */
+int lr_mk_special(struct lr_info *info)
+{
+ int rc;
+
+ snprintf(info->dest, PATH_MAX, "%s/%s/%s",
+ status->ls_targets[info->target_no], SPECIAL_DIR,
+ info->tfid + 2);
+
+ rc = lr_mkfile(info);
+ if (rc)
+ return rc;
+
+ rc = lr_add_pc(info->pfid, info->tfid, info->name);
+ return rc;
+}
+
+/* Remove a file or directory */
+int lr_rmfile(struct lr_info *info)
+{
+ int rc;
+
+ if (info->type == CL_RMDIR)
+ rc = rmdir(info->dest);
+ else
+ rc = unlink(info->dest);
+ if (rc == -1)
+ rc = -errno;
+ return rc;
+}
+
+/* Remove a file under SPECIAL_DIR with its tfid as its name. */
+int lr_rm_special(struct lr_info *info)
+{
+ int rc;
+
+ snprintf(info->dest, PATH_MAX, "%s/%s/%s",
+ status->ls_targets[info->target_no], SPECIAL_DIR,
+ info->tfid + 2);
+ rc = lr_rmfile(info);
+
+ if (rc)
+ lr_debug(DINFO, "remove: %s; rc=%d, errno=%d\n",
+ info->dest, rc, errno);
+ return rc;
+}
+
+/* Replicate file and directory create events */
+int lr_create(struct lr_info *info)
+{
+ int len;
+ int rc1 = 0;
+ int rc;
+ int mkspecial = 0;
+
+ /* Is target FID present on the source? */
+ rc = lr_get_path(info, info->tfid + 3);
+ if (rc == -ENOENT) {
+ /* Source file has disappeared. Not an error. */
+ lr_debug(DINFO, "create: tfid %s not found on"
+ "source-fs\n", info->tfid);
+ return 0;
+ } else if (rc) {
+ return rc;
+ }
+ strcpy(info->savedpath, info->path);
+
+ /* Is parent FID present on the source */
+ rc = lr_get_path(info, info->pfid + 3);
+ if (rc == -ENOENT) {
+ lr_debug(DINFO, "create: pfid %s not found on source-fs\n",
+ info->tfid);
+ mkspecial = 1;
+ } else if (rc < 0) {
+ return rc;
+ }
+
+ /* Is f2p(pfid)+name != f2p(tfid)? If not the file has moved. */
+ len = strlen(info->path);
+ if (len - 1 >= 0 && info->path[len - 1] == '/')
+ snprintf(info->dest, PATH_MAX, "%s%s", info->path, info->name);
+ else
+ snprintf(info->dest, PATH_MAX, "%s/%s", info->path, info->name);
+
+ lr_debug(DTRACE, "dest = %s; savedpath = %s\n", info->dest,
+ info->savedpath);
+ if (strncmp(info->dest, info->savedpath, PATH_MAX) != 0) {
+ lr_debug(DTRACE, "create: file moved (%s). %s != %s\n",
+ info->tfid, info->dest, info->savedpath);
+ mkspecial = 1;
+ }
+
+ /* 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);
+ if (access(info->dest, F_OK) != 0)
+ mkspecial = 1;
+ }
+ for (info->target_no = 0; info->target_no < status->ls_num_targets;
+ info->target_no++) {
+ snprintf(info->dest, PATH_MAX, "%s%s",
+ status->ls_targets[info->target_no], info->savedpath);
+ lr_get_FID_PATH(status->ls_source, info->tfid, info->src,
+ PATH_MAX);
+
+ if (!mkspecial)
+ rc1 = lr_mkfile(info);
+ if (mkspecial || rc1 == -ENOENT) {
+ rc1 = lr_mk_special(info);
+ }
+ if (rc1)
+ rc = rc1;
+ }
+ return rc;
+}
+
+/* Replicate a file remove (rmdir/unlink) operation */
+int lr_remove(struct lr_info *info)
+{
+ int rc = 0;
+ int rc1;
+
+ for (info->target_no = 0; info->target_no < status->ls_num_targets;
+ info->target_no++) {
+
+ rc1 = lr_rm_special(info);
+ if (!rc1)
+ continue;
+
+ rc1 = lr_get_path(info, info->pfid + 3);
+ if (rc1 == -ENOENT) {
+ lr_debug(DINFO, "remove: pfid %s not found\n",
+ info->pfid);
+ continue;
+ }
+ if (rc1) {
+ rc = rc1;
+ continue;
+ }
+ snprintf(info->dest, PATH_MAX, "%s%s/%s",
+ status->ls_targets[info->target_no], info->path,
+ info->name);
+
+ rc1 = lr_rmfile(info);
+ lr_debug(DINFO, "remove: %s; rc1=%d, errno=%d\n",
+ info->dest, rc1, errno);
+ if (rc1) {
+ rc = rc1;
+ continue;
+ }
+ }
+ return rc;
+}
+
+/* Replicate a rename/move operation. This operations are tracked by
+ two changelog records. */
+int lr_move(struct lr_info *info, struct lr_info *ext)
+{
+ int rc = 0;
+ int rc1;
+ int rc_dest, rc_src;
+ int special_src = 0;
+ int special_dest = 0;
+
+ rc_dest = lr_get_path(ext, ext->pfid + 3);
+ if (rc_dest < 0 && rc_dest != -ENOENT)
+ return rc_dest;
+
+ rc_src = lr_get_path(info, info->pfid + 3);
+ if (rc_src < 0 && rc_src != -ENOENT)
+ return rc_src;
+
+ for (info->target_no = 0; info->target_no < status->ls_num_targets;
+ info->target_no++) {
+
+ if (!rc_dest) {
+ snprintf(info->dest, PATH_MAX, "%s%s",
+ status->ls_targets[info->target_no],
+ ext->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],
+ ext->path, ext->name);
+ }
+ }
+ if (rc_dest == -ENOENT) {
+ snprintf(info->dest, PATH_MAX, "%s/%s/%s",
+ status->ls_targets[info->target_no],
+ SPECIAL_DIR, info->tfid + 2);
+ special_dest = 1;
+ }
+
+ if (!rc_src)
+ snprintf(info->src, PATH_MAX, "%s%s/%s",
+ status->ls_targets[info->target_no],
+ info->path, info->name);
+ if (rc_src == -ENOENT || (access(info->src, F_OK) != 0 &&
+ errno == ENOENT)) {
+ snprintf(info->src, PATH_MAX, "%s/%s/%s",
+ status->ls_targets[info->target_no],
+ SPECIAL_DIR, info->tfid + 2);
+ special_src = 1;
+ }
+
+ rc1 = 0;
+ if (strcmp(info->src, info->dest) != 0) {
+ rc1 = rename(info->src, info->dest);
+ if (rc1 == -1)
+ rc1 = -errno;
+ }
+
+ if (special_src) {
+ lr_remove_pc(info->pfid, info->tfid);
+ if (!special_dest)
+ lr_cascade_move(info->tfid + 2, info->dest, info);
+ }
+ if (special_dest)
+ lr_add_pc(ext->pfid, info->tfid, ext->name);
+
+ lr_debug(DINFO, "move: %s [to] %s rc1=%d, errno=%d\n",
+ info->src, info->dest, rc1, errno);
+ if (rc1)
+ rc = rc1;
+ }
+ return rc;
+}
+
+/* Replicate a hard link */
+int lr_link(struct lr_info *info)
+{
+ int i;
+ int len;
+ int rc;
+ int rc1;
+ struct stat st;
+
+ lr_get_FID_PATH(status->ls_source, info->tfid, info->src, PATH_MAX);
+ rc = stat(info->src, &st);
+ if (rc == -1)
+ return -errno;
+
+ 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;
+
+ /* 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 + 3, i);
+ if (rc1)
+ break;
+ else
+ lr_debug(DTRACE, "\tfid2path %s, %s, %d\n",
+ info->path, info->name, i);
+
+ 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);
+ }
+
+ 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",
+ status->ls_targets[info->target_no],
+ SPECIAL_DIR, info->tfid + 2);
+ else if (info->dest[0] == 0)
+ snprintf(info->dest, PATH_MAX, "%s/%s/%s",
+ status->ls_targets[info->target_no],
+ SPECIAL_DIR, info->tfid + 2);
+
+ rc1 = link(info->src, info->dest);
+ lr_debug(DINFO, "link: %s [to] %s; rc1=%d,errno=%d\n",
+ info->src, info->dest, rc1, errno);
+
+ if (rc1)
+ rc = rc1;
+ }
+ return rc;
+}
+
+/* Replicate file attributes */
+int lr_setattr(struct lr_info *info)
+{
+ int rc1;
+ int rc;
+
+ lr_get_FID_PATH(status->ls_source, info->tfid, info->src, PATH_MAX);
+
+ rc = lr_get_path(info, info->tfid + 3);
+ if (rc == -ENOENT)
+ lr_debug(DINFO, "setattr: %s not present on source-fs\n",
+ info->src);
+ if (rc)
+ return rc;
+
+ for (info->target_no = 0; info->target_no < status->ls_num_targets;
+ info->target_no++) {
+
+ 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);
+
+ rc1 = lr_sync_data(info);
+ if (!rc1)
+ rc1 = lr_copy_attr(info->src, info->dest);
+ if (rc1)
+ rc = rc1;
+ }
+ return rc;
+}
+
+/* Replicate xattrs */
+int lr_setxattr(struct lr_info *info)
+{
+ int rc, rc1;
+
+ lr_get_FID_PATH(status->ls_source, info->tfid, info->src, PATH_MAX);
+
+ rc = lr_get_path(info, info->tfid + 3);
+ if (rc == -ENOENT)
+ lr_debug(DINFO, "setxattr: %s not present on source-fs\n",
+ info->src);
+ if (rc)
+ return rc;
+
+ for (info->target_no = 0; info->target_no < status->ls_num_targets;
+ info->target_no++) {
+
+ 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);
+
+ rc1 = lr_copy_xattr(info);
+ if (rc1)
+ rc = rc1;
+ }
+
+ return rc;
+}
+
+/* Parse a line of changelog entry */
+int lr_parse_line(struct lr_info *info, FILE *fp)
+{
+ unsigned long long time;
+ unsigned int flags;
+ char typestr[TYPE_STR_LEN];
+ char line[PATH_MAX];
+ char *str;
+ int i;
+
+ if (fgets(line, sizeof(line), fp) != NULL) {
+ if (sscanf(line, "%llu %s %llu %x %s %s",
+ &info->recno, typestr, &time,
+ &flags, info->tfid, info->pfid) < 4) {
+ fprintf(stderr, "error: unexpected changelog record "
+ "format - %s\n", line);
+ return -1;
+ }
+ typestr[2] = '\0';
+ info->type = atoi(typestr);
+
+ /* The filename could have spaces in it. scanf would
+ have ignored it. Parse for the complete
+ filename. */
+ if (info->type != CL_SETATTR &&
+ info->type != CL_XATTR &&
+ info->type != CL_MARK) {
+ for (i = 0, str = line; str != NULL && i <= 5;
+ i++, str++){
+ str = strchr(str, ' ');
+ }
+ if (str) {
+ strncpy(info->name, str, PATH_MAX);
+ str = strchr(info->name, '\n');
+ if (str)
+ str[0] = '\0';
+ } else {
+ fprintf(stderr, "error: unexpected changelog "
+ "record format - %s\n", line);
+ return -1;
+ }
+ }
+ rec_count++;
+ } else {
+ return -1;
+ }
+ return 0;
+}
+
+/* Initialize the replication parameters */
+int lr_init_status()
+{
+ size_t size = sizeof(struct lreplicate_status) + PATH_MAX;
+
+ if (status != NULL)
+ return 0;
+ status = calloc(size, 1);
+ if (status == NULL)
+ return -ENOMEM;
+ status->ls_version = REPLICATE_STATUS_VER;
+ status->ls_size = size;
+ status->ls_last_recno = -1;
+ return 0;
+}
+
+/* Make a backup of the statuslog */
+void lr_backup_log()
+{
+ char backupfile[PATH_MAX];
+
+ if (logbackedup)
+ return;
+ snprintf(backupfile, PATH_MAX, "%s.old", statuslog);
+ (void) rename(statuslog, backupfile);
+ logbackedup = 1;
+
+ return;
+}
+
+/* Save replication parameters to a statuslog. */
+int lr_write_log()
+{
+ int fd;
+ size_t size;
+ size_t write_size = status->ls_size;
+ struct lr_parent_child_list *curr;
+ int rc = 0;
+
+ if (statuslog == NULL)
+ return 0;
+
+ lr_backup_log();
+
+ fd = open(statuslog, O_WRONLY | O_CREAT | O_SYNC);
+ if (fd == -1) {
+ fprintf(stderr, "Error opening log file for writing (%s)\n",
+ statuslog);
+ return -1;
+ }
+ errno = 0;
+ size = write(fd, status, write_size);
+ if (size != write_size) {
+ fprintf(stderr, "Error writing to log file (%s) %d\n",
+ statuslog, errno);
+ close(fd);
+ return -1;
+ }
+
+ for (curr = parents; curr; curr = curr->pc_next) {
+ size = write(fd, &curr->pc_log, sizeof(curr->pc_log));
+ if (size != sizeof(curr->pc_log)) {
+ fprintf(stderr, "Error writing to log file (%s) %d\n",
+ statuslog, errno);
+ rc = -1;
+ break;
+ }
+ }
+ close(fd);
+ return rc;
+}
+
+/* Read statuslog and populate the replication parameters. Command
+ * line parameters take precedence over parameters in the log file.*/
+int lr_read_log()
+{
+ struct lr_parent_child_list *tmp;
+ struct lr_parent_child_log rec;
+ struct lreplicate_status *s;
+ int fd = -1;
+ size_t size;
+ size_t read_size = sizeof(struct lreplicate_status) + PATH_MAX;
+ int rc = 0;
+
+ if (statuslog == NULL)
+ return 0;
+
+ s = calloc(1, read_size);
+ if (s == NULL)
+ GOTO(out, rc = -ENOMEM);
+
+ fd = open(statuslog, O_RDONLY);
+ if (fd == -1)
+ GOTO(out, rc = -errno);
+ size = read(fd, s, read_size);
+ if (size != read_size)
+ GOTO(out, rc = -EINVAL);
+ if (read_size < s->ls_size) {
+ read_size = s->ls_size;
+ s = lr_grow_buf(s, read_size);
+ if (s == NULL)
+ GOTO(out, rc = -ENOMEM);
+ if (lseek(fd, 0, SEEK_SET) == -1)
+ GOTO(out, rc = -errno);
+ size = read(fd, s, read_size);
+ if (size != read_size)
+ GOTO(out, rc = -EINVAL);
+ }
+
+ while (read(fd, &rec, sizeof(rec)) != 0) {
+ tmp = calloc(1, sizeof(*tmp));
+ if (!tmp)
+ GOTO(out, rc = -ENOMEM);
+ tmp->pc_log = rec;
+ tmp->pc_next = parents;
+ parents = tmp;
+ }
+
+ /* copy uninitialized fields to status */
+ if (status->ls_num_targets == 0) {
+ if (status->ls_size != s->ls_size) {
+ status = lr_grow_buf(status, s->ls_size);
+ if (status == NULL)
+ GOTO(out, rc = -ENOMEM);
+ status->ls_size = s->ls_size;
+ }
+ status->ls_num_targets = s->ls_num_targets;
+ memcpy(status->ls_targets, s->ls_targets,
+ PATH_MAX * s->ls_num_targets);
+ }
+ if (status->ls_last_recno == -1)
+ status->ls_last_recno = s->ls_last_recno;
+
+ if (status->ls_registration[0] == '\0')
+ strncpy(status->ls_registration, s->ls_registration,
+ LR_NAME_MAXLEN);
+
+ if (status->ls_mdt_device[0] == '\0')
+ strncpy(status->ls_mdt_device, s->ls_mdt_device,
+ LR_NAME_MAXLEN);
+
+ if (status->ls_source_fs[0] == '\0')
+ strncpy(status->ls_source_fs, s->ls_source_fs,
+ LR_NAME_MAXLEN);
+
+ if (status->ls_source[0] == '\0')
+ strncpy(status->ls_source, s->ls_source, PATH_MAX);
+
+ out:
+ if (fd != -1)
+ close(fd);
+ if (s)
+ free(s);
+ return rc;
+}
+
+/* Clear changelogs every CLEAR_INTERVAL records or at the end of
+ processing. */
+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.
+ */
+ strncpy(mdt_device, status->ls_mdt_device,
+ LR_NAME_MAXLEN);
+ rc = llapi_changelog_clear(mdt_device,
+ status->ls_registration,
+ rec);
+ 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();
+
+ }
+ }
+
+ return rc;
+}
+
+/* Locate a usable version of rsync. At this point we'll use any
+ version. */
+int lr_locate_rsync()
+{
+ FILE *fp;
+ int len;
+
+ /* Locate rsync */
+ snprintf(rsync, PATH_MAX, "%s -p %s", TYPE, RSYNC);
+ fp = popen(rsync, "r");
+ if (fp == NULL)
+ return -1;
+
+ if (fgets(rsync, PATH_MAX, fp) == NULL) {
+ fclose(fp);
+ return -1;
+ }
+
+ len = strlen(rsync);
+ if (len > 0 && rsync[len - 1] == '\n')
+ rsync[len - 1] = '\0';
+ fclose(fp);
+
+ /* Determine the version of rsync */
+ snprintf(rsync_ver, PATH_MAX, "%s --version", rsync);
+ fp = popen(rsync_ver, "r");
+ if (fp == NULL)
+ return -1;
+
+ if (fgets(rsync_ver, PATH_MAX, fp) == NULL) {
+ fclose(fp);
+ return -1;
+ }
+ len = strlen(rsync_ver);
+ if (len > 0 && rsync_ver[len - 1] == '\n')
+ rsync_ver[len - 1] = '\0';
+ fclose(fp);
+
+ return 0;
+
+}
+
+/* Print the replication parameters */
+void lr_print_status(struct lr_info *info)
+{
+ int i;
+
+ if (!verbose)
+ return;
+
+ printf("Lustre filesystem: %s\n", status->ls_source_fs);
+ printf("MDT device: %s\n", status->ls_mdt_device);
+ printf("Source: %s\n", status->ls_source);
+ for (i = 0; i < status->ls_num_targets; i++)
+ printf("Target: %s\n", status->ls_targets[i]);
+ if (statuslog != NULL)
+ printf("Statuslog: %s\n", statuslog);
+ printf("Changelog registration: %s\n", status->ls_registration);
+ printf("Starting changelog record: %lld\n", status->ls_last_recno);
+ if (noxattr)
+ printf("Replicate xattrs: no\n");
+ if (noclear)
+ printf("Clear changelog after use: no\n");
+ if (use_rsync)
+ printf("Using rsync: %s (%s)\n", rsync, rsync_ver);
+}
+
+/* Replicate filesystem operations from src_path to target_path */
+int lr_replicate()
+{
+ int fd;
+ FILE *fp;
+ long long startrec;
+ struct lr_info *info;
+ struct lr_info *ext;
+ time_t start;
+ int xattr_not_supp;
+ int i;
+ int rc;
+
+ start = time(NULL);
+
+ info = calloc(1, sizeof(struct lr_info));
+ if (info == NULL)
+ return -ENOMEM;
+
+ rc = llapi_search_fsname(status->ls_source, status->ls_source_fs);
+ if (rc) {
+ fprintf(stderr, "Source path is not a valid Lustre client "
+ "mountpoint.\n");
+ return rc;
+ }
+ if (status->ls_mdt_device[0] == '\0')
+ snprintf(status->ls_mdt_device, LR_NAME_MAXLEN, "%s%s",
+ status->ls_source_fs, DEFAULT_MDT);
+
+ ext = calloc(1, sizeof(struct lr_info));
+ if (ext == NULL)
+ return -ENOMEM;
+ memcpy(ext, info, sizeof(struct lr_info));
+
+ 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);
+ rc = mkdir(info->dest, 0777);
+ if (rc == -1 && errno != EEXIST) {
+ fprintf(stderr, "Error writing to target path %s.\n",
+ status->ls_targets[i]);
+ return -errno;
+ }
+ rc = llistxattr(info->src, info->xlist, info->xsize);
+ if (rc == -1 && errno == ENOTSUP) {
+ fprintf(stderr, "xattrs not supported on %s\n",
+ status->ls_targets[i]);
+ xattr_not_supp++;
+ }
+ }
+ if (xattr_not_supp == status->ls_num_targets)
+ /* None of the targets support xattrs. */
+ noxattr = 1;
+
+ lr_print_status(info);
+
+ /* Open changelogs for consumption*/
+ startrec = status->ls_last_recno;
+ fd = llapi_changelog_open(status->ls_source_fs, startrec);
+ if (fd < 0) {
+ fprintf(stderr, "Error opening changelog file for fs %s.\n",
+ status->ls_source_fs);
+ return fd;
+ }
+ if ((fp = fdopen(fd, "r")) == NULL) {
+ fprintf(stderr, "Error: fdopen failed.");
+ close(fd);
+ return -errno;
+ }
+
+ while (!quit && lr_parse_line(info, fp) == 0) {
+ rc = 0;
+ if (info->type == CL_RENAME)
+ /* Rename operations have an additional changelog
+ record of information. */
+ lr_parse_line(ext, fp);
+
+ if (dryrun)
+ continue;
+
+ switch(info->type) {
+ case CL_CREATE:
+ case CL_MKDIR:
+ case CL_MKNOD:
+ case CL_SOFTLINK:
+ rc = lr_create(info);
+ break;
+ case CL_RMDIR:
+ case CL_UNLINK:
+ rc = lr_remove(info);
+ break;
+ case CL_RENAME:
+ rc = lr_move(info, ext);
+ break;
+ case CL_HARDLINK:
+ rc = lr_link(info);
+ break;
+ case CL_TRUNC:
+ case CL_SETATTR:
+ rc = lr_setattr(info);
+ break;
+ case CL_XATTR:
+ rc = lr_setxattr(info);
+ break;
+ case CL_CLOSE:
+ case CL_EXT:
+ case CL_OPEN:
+ case CL_IOCTL:
+ case CL_MARK:
+ /* Nothing needs to be done for these entries */
+ default:
+ break;
+ }
+ if (rc && rc != -ENOENT) {
+ fprintf(stderr, "Replication of operation %d, "
+ "index %lld failed: %d\n",
+ info->type, info->recno, rc);
+ errors++;
+ }
+ lr_clear_cl(info, 0);
+ if (debug) {
+ bzero(info, sizeof(struct lr_info));
+ bzero(ext, sizeof(struct lr_info));
+ }
+ }
+
+ if (errors || verbose)
+ printf("Errors: %d\n", errors);
+
+ /* Clear changelog records used so far */
+ lr_clear_cl(info, 1);
+
+ if (verbose) {
+ printf("lreplicate took %ld seconds\n", time(NULL) - start);
+ printf("Changelog records consumed: %lld\n", rec_count);
+ }
+
+ close(fd);
+ fclose(fp);
+
+ return 0;
+}
+
+void
+termination_handler (int signum)
+{
+ /* Set a flag for the replicator to gracefully shutdown */
+ quit = 1;
+ printf("lreplicate halting.\n");
+}
+
+int main(int argc, char *argv[])
+{
+ char c;
+ int newsize;
+ int numtargets = 0;
+ int rc = 0;
+
+ if ((rc = lr_init_status()) != 0)
+ return rc;
+
+ while ((c = getopt_long(argc, argv, "s:t:m:u:l:vx:zc:ry:n:d:",
+ long_opts, NULL)) >= 0) {
+ switch (c) {
+ case 's':
+ /* Assume absolute paths */
+ strncpy(status->ls_source, optarg, PATH_MAX);
+ break;
+ case 't':
+ status->ls_num_targets++;
+ numtargets++;
+ if (numtargets != status->ls_num_targets) {
+ /* Targets were read from a log
+ file. The ones specified on the
+ command line take precedence. The
+ ones from the log file will be
+ ignored. */
+ status->ls_num_targets = numtargets;
+ }
+ newsize = sizeof (struct lreplicate_status) +
+ (status->ls_num_targets * PATH_MAX);
+ if (status->ls_size != newsize) {
+ status->ls_size = newsize;
+ status = lr_grow_buf(status, newsize);
+ if (status == NULL)
+ return -ENOMEM;
+ }
+ strncpy(status->ls_targets[status->ls_num_targets - 1],
+ optarg,
+ PATH_MAX);
+ break;
+ case 'm':
+ strncpy(status->ls_mdt_device, optarg, LR_NAME_MAXLEN);
+ break;
+ case 'u':
+ strncpy(status->ls_registration, optarg,
+ LR_NAME_MAXLEN);
+ break;
+ case 'l':
+ statuslog = optarg;
+ (void) lr_read_log();
+ break;
+ case 'v':
+ verbose = 1;
+ break;
+ case 'x':
+ if (strcmp("no", optarg) == 0) {
+ noxattr = 1;
+ } else if (strcmp("yes", optarg) != 0) {
+ printf("Invalid parameter %s. "
+ "Specify --xattr=no or --xattr=yes\n",
+ optarg);
+ return -1;
+ }
+ break;
+ case 'z':
+ dryrun = 1;
+ break;
+ case 'c':
+ /* Undocumented option cl-clear */
+ if (strcmp("no", optarg) == 0) {
+ noclear = 1;
+ } else if (strcmp("yes", optarg) != 0) {
+ printf("Invalid parameter %s. "
+ "Specify --cl-clear=no "
+ "or --cl-clear=yes\n",
+ optarg);
+ return -1;
+ }
+ break;
+ case 'r':
+ /* Undocumented option use-rsync */
+ use_rsync = 1;
+ break;
+ case 'y':
+ /* Undocumented option rsync-threshold */
+ rsync_threshold = atol(optarg);
+ break;
+ case 'n':
+ /* Undocumented option start-recno */
+ status->ls_last_recno = atol(optarg);
+ break;
+ case 'd':
+ /* Undocumented option debug */
+ debug = atoi(optarg);
+ if (debug < 0 || debug > 2)
+ debug = 0;
+ break;
+ default:
+ fprintf(stderr, "error: %s: option '%s' "
+ "unrecognized.\n", argv[0], argv[optind - 1]);
+ lr_usage();
+ return -1;
+ }
+ }
+
+ if (status->ls_last_recno == -1)
+ status->ls_last_recno = 0;
+ if (strnlen(status->ls_registration, LR_NAME_MAXLEN) == 0) {
+ /* No registration ID was passed in. */
+ printf("Please specify changelog consumer registration id.\n");
+ lr_usage();
+ return -1;
+ }
+ if (strnlen(status->ls_source, PATH_MAX) == 0) {
+ fprintf(stderr, "Please specify the source path.\n");
+ lr_usage();
+ return -1;
+ }
+ if (strnlen(status->ls_targets[0], PATH_MAX) == 0) {
+ fprintf(stderr, "Please specify the target path.\n");
+ lr_usage();
+ 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);
+ exit(-1);
+ }
+
+ signal(SIGINT, termination_handler);
+ signal(SIGHUP, termination_handler);
+ signal(SIGTERM, termination_handler);
+
+ rc = lr_replicate();
+
+ return rc;
+}
git://git.whamcloud.com / fs / lustre-release.git / commitdiff