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authorDan Lambright <dlambrig@redhat.com>2015-02-18 14:49:50 -0500
committerVijay Bellur <vbellur@redhat.com>2015-03-18 04:47:41 -0700
commita216745e5db3fdb4fa8d625c971e70f8d0e34d23 (patch)
treec1165dbc612ec7121bd1734cb9bb006f9ac7c9d3 /tests/bugs/distribute
parent38ccaaf9d1a93c4fc6d733ee3bd5c73e5457bdab (diff)
cluster/dht: Change the subvolume encoding in d_off to be a "global"
position in the graph rather than relative (local) to a particular translator. Encoding the volume in this way allows a single translator to manage which brick is currently being scanned for directory entries. Using a single translator minimizes allocated bits in the d_off. It also allows multiple DHT translators in the same graph to have a common frame of reference (the graph position) for which brick is being read. Multiple DHT translators are needed for the Tiering feature. The fix builds off a previous change (9332) which removed subvolume encoding from AFR. The fix makes an equivalent change to the EC translator. More background can be found in fix 9332 and gluster-dev discussions [1]. DHT and AFR/EC are responsibile (as before) for choosing which brick to enumerate directory entries in over the readdir lifecycle. The client translator receiving the readdir fop encodes the dht_t. It is referred to as the "leaf node" in the graph and corresponds to the brick being scanned. When DHT decodes the d_off, it translates the leaf node to a local subvolume, which represents the next node in the graph leading to the brick. Tracking of leaf nodes is done in common utility functions. Leaf nodes counts and positional information are updated on a graph switch. [1] www.gluster.org/pipermail/gluster-devel/2015-January/043592.html Change-Id: Iaf0ea86d7046b1ceadbad69d88707b243077ebc8 BUG: 1190734 Signed-off-by: Dan Lambright <dlambrig@redhat.com> Reviewed-on: http://review.gluster.org/9688 Reviewed-by: Xavier Hernandez <xhernandez@datalab.es> Reviewed-by: Krishnan Parthasarathi <kparthas@redhat.com> Reviewed-by: Vijay Bellur <vbellur@redhat.com> Tested-by: Vijay Bellur <vbellur@redhat.com>
Diffstat (limited to 'tests/bugs/distribute')
-rw-r--r--tests/bugs/distribute/bug-1190734.t104
1 files changed, 104 insertions, 0 deletions
diff --git a/tests/bugs/distribute/bug-1190734.t b/tests/bugs/distribute/bug-1190734.t
new file mode 100644
index 00000000000..c2f2338dc0f
--- /dev/null
+++ b/tests/bugs/distribute/bug-1190734.t
@@ -0,0 +1,104 @@
+#!/bin/bash
+
+. $(dirname $0)/../../include.rc
+. $(dirname $0)/../../volume.rc
+. $(dirname $0)/../../nfs.rc
+
+BRICK_COUNT=3
+FILE_COUNT=100
+
+function create_files {
+ rm -rf $2
+ mkdir $2
+ for i in `seq 1 $1`; do
+ touch $2/file_$i
+ done
+}
+
+function check_file_count {
+ ORIG_FILE_COUNT=`find $2 | tail -n +2 |wc -l`
+ [ $ORIG_FILE_COUNT -eq $1 ]
+}
+
+function reset {
+ $CLI volume stop $V0
+ umount $1
+ $CLI volume delete $V0
+}
+
+function start_mount_fuse {
+ $CLI volume start $V0
+ [ $? -ne 0 ] && return 1
+
+ $GFS --volfile-id=/$V0 --volfile-server=$H0 $M0
+ [ $? -ne 0 ] && return 1
+
+ create_files $FILE_COUNT $M0/$1
+ [ $? -ne 0 ] && return 1
+
+ return 0
+}
+
+function start_mount_nfs {
+ $CLI volume start $V0
+ [ $? -ne 0 ] && return 1
+
+ sleep 3
+ mount_nfs $H0:/$V0 $N0
+ [ $? -ne 0 ] && return 1
+
+ create_files $FILE_COUNT $N0/$1
+ [ $? -ne 0 ] && return 1
+
+ return 0
+}
+
+function start_removing_bricks {
+ check_file_count $FILE_COUNT $1
+ [ $? -ne 0 ] && return 1
+ $CLI volume remove-brick $V0 replica 2 $H0:$B0/${V0}2 $H0:$B0/${V0}3 start
+ [ $? -ne 0 ] && return 1
+
+ return 0
+}
+
+function finish_removing_bricks {
+
+ $CLI volume remove-brick $V0 replica 2 $H0:$B0/${V0}2 $H0:$B0/${V0}3 commit
+ [ $? -ne 0 ] && return 1
+
+ check_file_count $FILE_COUNT $1
+ return $?
+}
+
+cleanup
+
+TEST glusterd
+TEST pidof glusterd
+
+# Test 1-2 Create repliacted volume
+
+TEST $CLI volume create $V0 replica 2 $H0:$B0/${V0}0 $H0:$B0/${V0}1 \
+ $H0:$B0/${V0}2 $H0:$B0/${V0}3 $H0:$B0/${V0}4 $H0:$B0/${V0}5
+
+# ------- test 1: AFR, fuse + remove bricks
+
+TEST start_mount_fuse test1
+TEST start_removing_bricks $M0/test1
+EXPECT_WITHIN $REBALANCE_TIMEOUT "completed" remove_brick_status_completed_field "$V0" "$H0:$B0/${V0}2 $H0:$B0/${V0}3"
+$CLI volume remove-brick $V0 replica 2 $H0:$B0/${V0}2 $H0:$B0/${V0}3 status > /tmp/out
+TEST finish_removing_bricks $M0/test1
+reset $M0
+
+# ------- test 2: AFR, nfs + remove bricks
+
+TEST $CLI volume create $V0 replica 2 $H0:$B0/${V0}0 $H0:$B0/${V0}1 \
+ $H0:$B0/${V0}2 $H0:$B0/${V0}3 $H0:$B0/${V0}4 $H0:$B0/${V0}5
+
+TEST start_mount_nfs test2
+TEST start_removing_bricks $N0/test2
+EXPECT_WITHIN $REBALANCE_TIMEOUT "completed" remove_brick_status_completed_field "$V0" "$H0:$B0/${V0}2 $H0:$B0/${V0}3"
+TEST finish_removing_bricks $N0/test2
+reset $N0
+
+cleanup