cluster/afr: Sparse file self-heal canges

- Fix boundary condition for offset
- Honour data-self-heal-algorithm option
- Added tests for sparse file self-healing

Change-Id: I14bb1c9d04118a3df4072f962fc8f2f197391d95
BUG: 1080707
Signed-off-by: Pranith Kumar K <pkarampu@redhat.com>
Reviewed-on: http://review.gluster.org/7339
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>

2 files changed, 129 insertions, 2 deletions

diff --git a/tests/basic/afr/sparse-file-self-heal.t b/tests/basic/afr/sparse-file-self-heal.t
new file mode 100644
index 00000000000..9b795c331cf
--- /dev/null
+++ b/tests/basic/afr/sparse-file-self-heal.t
@@ -0,0 +1,121 @@
+#!/bin/bash
+
+#This file checks if self-heal of files with holes is working properly or not
+#bigger is 2M, big is 1M, small is anything less
+. $(dirname $0)/../../include.rc
+. $(dirname $0)/../../volume.rc
+
+cleanup;
+
+TEST glusterd
+TEST pidof glusterd
+TEST $CLI volume create $V0 replica 2 $H0:$B0/${V0}{0,1}
+TEST $CLI volume set $V0 data-self-heal-algorithm full
+TEST $CLI volume start $V0
+
+TEST glusterfs --volfile-id=/$V0 --volfile-server=$H0 $M0 --attribute-timeout=0 --entry-timeout=0
+TEST dd if=/dev/urandom of=$M0/small count=1 bs=1M
+TEST dd if=/dev/urandom of=$M0/bigger2big count=1 bs=2M
+TEST dd if=/dev/urandom of=$M0/big2bigger count=1 bs=1M
+
+TEST kill_brick $V0 $H0 $B0/${V0}0
+
+#File with >128k size hole
+TEST truncate -s 1M $M0/big
+big_md5sum=$(md5sum $M0/big | awk '{print $1}')
+
+#File with <128k hole
+TEST truncate -s 0 $M0/small
+TEST truncate -s 64k $M0/small
+small_md5sum=$(md5sum $M0/small | awk '{print $1}')
+
+#Bigger file truncated to big size hole.
+TEST truncate -s 0 $M0/bigger2big
+TEST truncate -s 1M $M0/bigger2big
+bigger2big_md5sum=$(md5sum $M0/bigger2big | awk '{print $1}')
+
+#Big file truncated to Bigger size hole
+TEST truncate -s 2M $M0/big2bigger
+big2bigger_md5sum=$(md5sum $M0/big2bigger | awk '{print $1}')
+
+$CLI volume start $V0 force
+EXPECT_WITHIN 20 "1" afr_child_up_status $V0 0
+EXPECT_WITHIN 20 "Y" glustershd_up_status
+EXPECT_WITHIN 20 "1" afr_child_up_status_in_shd $V0 0
+EXPECT_WITHIN 20 "1" afr_child_up_status_in_shd $V0 1
+TEST gluster volume heal $V0 full
+EXPECT_WITHIN 20 "0" afr_get_pending_heal_count $V0
+
+big_md5sum_0=$(md5sum $B0/${V0}0/big | awk '{print $1}')
+small_md5sum_0=$(md5sum $B0/${V0}0/small | awk '{print $1}')
+bigger2big_md5sum_0=$(md5sum $B0/${V0}0/bigger2big | awk '{print $1}')
+big2bigger_md5sum_0=$(md5sum $B0/${V0}0/big2bigger | awk '{print $1}')
+
+EXPECT $big_md5sum echo $big_md5sum_0
+EXPECT $small_md5sum echo $small_md5sum_0
+EXPECT $big2bigger_md5sum echo $big2bigger_md5sum_0
+EXPECT $bigger2big_md5sum echo $bigger2big_md5sum_0
+
+
+EXPECT "1" has_holes $B0/${V0}0/big
+#Because self-heal writes the final chunk hole should not be there for
+#files < 128K
+EXPECT "0" has_holes $B0/${V0}0/small
+# Since source is smaller than sink, self-heal does blind copy so no holes will
+# be present
+EXPECT "0" has_holes $B0/${V0}0/bigger2big
+EXPECT "1" has_holes $B0/${V0}0/big2bigger
+
+TEST rm -f $M0/*
+
+#check the same tests with diff self-heal
+TEST $CLI volume set $V0 data-self-heal-algorithm diff
+
+TEST dd if=/dev/urandom of=$M0/small count=1 bs=1M
+TEST dd if=/dev/urandom of=$M0/big2bigger count=1 bs=1M
+TEST dd if=/dev/urandom of=$M0/bigger2big count=1 bs=2M
+
+TEST kill_brick $V0 $H0 $B0/${V0}0
+
+#File with >128k size hole
+TEST truncate -s 1M $M0/big
+big_md5sum=$(md5sum $M0/big | awk '{print $1}')
+
+#File with <128k hole
+TEST truncate -s 0 $M0/small
+TEST truncate -s 64k $M0/small
+small_md5sum=$(md5sum $M0/small | awk '{print $1}')
+
+#Bigger file truncated to big size hole
+TEST truncate -s 0 $M0/bigger2big
+TEST truncate -s 1M $M0/bigger2big
+bigger2big_md5sum=$(md5sum $M0/bigger2big | awk '{print $1}')
+
+#Big file truncated to Bigger size hole
+TEST truncate -s 2M $M0/big2bigger
+big2bigger_md5sum=$(md5sum $M0/big2bigger | awk '{print $1}')
+
+$CLI volume start $V0 force
+EXPECT_WITHIN 20 "1" afr_child_up_status $V0 0
+EXPECT_WITHIN 20 "Y" glustershd_up_status
+EXPECT_WITHIN 20 "1" afr_child_up_status_in_shd $V0 0
+EXPECT_WITHIN 20 "1" afr_child_up_status_in_shd $V0 1
+TEST gluster volume heal $V0 full
+EXPECT_WITHIN 20 "0" afr_get_pending_heal_count $V0
+
+big_md5sum_0=$(md5sum $B0/${V0}0/big | awk '{print $1}')
+small_md5sum_0=$(md5sum $B0/${V0}0/small | awk '{print $1}')
+bigger2big_md5sum_0=$(md5sum $B0/${V0}0/bigger2big | awk '{print $1}')
+big2bigger_md5sum_0=$(md5sum $B0/${V0}0/big2bigger | awk '{print $1}')
+
+EXPECT $big_md5sum echo $big_md5sum_0
+EXPECT $small_md5sum echo $small_md5sum_0
+EXPECT $big2bigger_md5sum echo $big2bigger_md5sum_0
+EXPECT $bigger2big_md5sum echo $bigger2big_md5sum_0
+
+EXPECT "1" has_holes $B0/${V0}0/big
+EXPECT "1" has_holes $B0/${V0}0/big2bigger
+EXPECT "0" has_holes $B0/${V0}0/bigger2big
+EXPECT "0" has_holes $B0/${V0}0/small
+
+cleanup
diff --git a/tests/volume.rc b/tests/volume.rc
index 9a06687cd86..9e4843e06c4 100644
--- a/tests/volume.rc
+++ b/tests/volume.rc
@@ -300,5 +300,11 @@ function data_written_count {
     echo "$1" | grep "Data Written:$2bytes" | wc -l
 }
 
-
-
+function has_holes {
+        if [ $((`stat -c '%b*%B-%s' -- $1`)) -lt 0 ];
+        then
+                echo "1"
+        else
+                echo "0"
+        fi
+}