From bf7bf5f81af2d60aeb744a62bd8187d70e90fdff Mon Sep 17 00:00:00 2001
From: Johann Lombardi <johann@sun.com>
Date: Fri, 25 Jun 2010 18:36:54 +0200
Subject: [PATCH] b=17485 add regression test to verify that MDS does not
 allocate some objid twice

o=hongchao
i=johann
i=grev
---
 lustre/tests/replay-single.sh | 75 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)

diff --git a/lustre/tests/replay-single.sh b/lustre/tests/replay-single.sh
index dfbae3f..54b157b 100644
--- a/lustre/tests/replay-single.sh
+++ b/lustre/tests/replay-single.sh
@@ -2192,6 +2192,81 @@ test_86() {
 }
 run_test 86 "umount server after clear nid_stats should not hit LBUG"
 
+test_87() { #bug 17485
+    mkdir -p $DIR/$tdir
+    mkdir -p $TMP/$tdir
+
+    lfs setstripe $DIR/$tdir -o 0 -c 1 || error "setstripe"
+
+    replay_barrier ost1
+    replay_barrier mds
+
+    # exhaust precreations on ost1
+    local OST=$(lfs osts | grep ^0": " | awk '{print $2}' | sed -e 's/_UUID$//')
+    local mdtosc=$(get_mdtosc_proc_path $OST)
+    local last_id=$(do_facet mds lctl get_param -n osc.$mdtosc.prealloc_last_id)
+    local next_id=$(do_facet mds lctl get_param -n osc.$mdtosc.prealloc_next_id)
+    echo "before test: last_id = $last_id, next_id = $next_id" 
+
+    echo "Creating to objid $last_id on ost $OST..."
+    createmany -o $DIR/$tdir/f-%d $next_id $((last_id - next_id + 2))
+
+    #create some files to use some uncommitted objids
+    last_id=$(($last_id + 1))
+    createmany -o $DIR/$tdir/f-%d $last_id 8
+
+    last_id2=$(do_facet mds lctl get_param -n osc.$mdtosc.prealloc_last_id)
+    next_id2=$(do_facet mds lctl get_param -n osc.$mdtosc.prealloc_next_id)
+    echo "before recovery: last_id = $last_id2, next_id = $next_id2" 
+
+    shutdown_facet mds
+    shutdown_facet ost1
+
+    reboot_facet mds
+    change_active mds
+    wait_for mds
+    mount_facet mds || error "Restart of mds failed"
+
+    reboot_facet ost1
+    change_active ost1
+    wait_for ost1
+    mount_facet ost1 || error "Restart of ost1 failed"
+
+    clients_up
+
+    last_id2=$(do_facet mds lctl get_param -n osc.$mdtosc.prealloc_last_id)
+    next_id2=$(do_facet mds lctl get_param -n osc.$mdtosc.prealloc_next_id)
+    echo "after recovery: last_id = $last_id2, next_id = $next_id2" 
+
+    # create new files, which should use new objids, and ensure the orphan 
+    # cleanup phase for ost1 is completed at the same time
+    for i in `seq 8`; do
+        file_id=$(($last_id + 10 + $i))
+        dd if=/dev/urandom of=$DIR/$tdir/f-$file_id bs=4096 count=128
+    done
+
+    # if the objids were not recreated, then "ls" will failed for -ENOENT
+    ls -l $DIR/$tdir/* || error "can't get the status of precreated files"
+
+    local file_id
+    # write into previously created files
+    for i in `seq 8`; do
+        file_id=$(($last_id + $i))
+        dd if=/dev/urandom of=$DIR/$tdir/f-$file_id bs=4096 count=128
+        cp -f $DIR/$tdir/f-$file_id $TMP/$tdir/
+    done
+
+    # compare the content
+    for i in `seq 8`; do
+        file_id=$(($last_id + $i))
+        cmp $TMP/$tdir/f-$file_id $DIR/$tdir/f-$file_id || error "the content" \
+        "of file is modified!"
+    done
+
+    rm -fr $TMP/$tdir
+}
+run_test 87 "MDS should not assign same objid to different files "
+
 equals_msg `basename $0`: test complete, cleaning up
 check_and_cleanup_lustre
 [ -f "$TESTSUITELOG" ] && cat $TESTSUITELOG && grep -q FAIL $TESTSUITELOG && exit 1 || true
-- 
1.8.3.1