cluster/ec: Implement FALLOCATE FOP for EC

FALLOCATE file operations is not implemented in the
existing EC code. This change set implements it
for EC.

BUG: 1448293
Change-Id: Id9ed914db984c327c16878a5b2304a0ea461b623
Signed-off-by: Sunil Kumar Acharya <sheggodu@redhat.com>
Reviewed-on: https://review.gluster.org/15200
Smoke: Gluster Build System <jenkins@build.gluster.org>
NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org>
Reviewed-by: Pranith Kumar Karampuri <pkarampu@redhat.com>
CentOS-regression: Gluster Build System <jenkins@build.gluster.org>

2 files changed, 132 insertions, 0 deletions

diff --git a/tests/basic/ec/ec-fallocate.t b/tests/basic/ec/ec-fallocate.t
new file mode 100644
index 00000000000..1b827eed7df
--- /dev/null
+++ b/tests/basic/ec/ec-fallocate.t
@@ -0,0 +1,72 @@
+#!/bin/bash
+#
+# Run several commands to verify basic fallocate functionality. We verify that
+# fallocate creates and allocates blocks to a file. We also verify that the keep
+# size option does not modify the file size.
+###
+
+. $(dirname $0)/../../include.rc
+. $(dirname $0)/../../volume.rc
+. $(dirname $0)/../../fallocate.rc
+
+cleanup
+
+#cleate and start volume
+TEST glusterd
+TEST pidof glusterd
+TEST $CLI volume create $V0 disperse 3 redundancy 1 $H0:$B0/${V0}{0..2}
+TEST $CLI volume start $V0
+
+#Mount the volume
+TEST $GFS --volfile-id=/$V0 --volfile-server=$H0 $M0;
+EXPECT_WITHIN $CHILD_UP_TIMEOUT "3" ec_child_up_count $V0 0
+
+# check for fallocate support before continuing the test
+require_fallocate -l 1m -n $M0/file && rm -f $M0/file
+
+# fallocate a file and verify blocks are allocated
+TEST fallocate -l 1m $M0/file
+blksz=`stat -c %b $M0/file`
+nblks=`stat -c %B $M0/file`
+TEST [ $(($blksz * $nblks)) -eq 1048576 ]
+
+TEST unlink $M0/file
+
+# truncate a file to a fixed size, fallocate and verify that the size does not
+# change
+TEST truncate -s 1M $M0/file
+TEST fallocate -l 2m -n $M0/file
+blksz=`stat -c %b $M0/file`
+nblks=`stat -c %B $M0/file`
+sz=`stat -c %s $M0/file`
+TEST [ $sz -eq 1048576 ]
+# Note that gluster currently incorporates a hack to limit the number of blocks
+# reported as allocated to the file by the file size. We have allocated beyond the
+# file size here. Just check for non-zero allocation to avoid setting a land mine
+# for if/when that behavior might change.
+TEST [ ! $(($blksz * $nblks)) -eq 0 ]
+TEST unlink $M0/file
+
+# write some data, fallocate within and outside the range
+# and check for data corruption.
+TEST dd if=/dev/urandom of=$M0/file bs=1024k count=1
+TEST cp $M0/file $M0/file.copy.pre
+TEST fallocate -o 512k -l 128k $M0/file
+TEST cp $M0/file $M0/file.copy.post
+TEST cmp $M0/file.copy.pre $M0/file.copy.post
+TEST fallocate -o 1000k -l 128k $M0/file
+TEST cp $M0/file $M0/file.copy.post2
+TEST ! cmp $M0/file.copy.pre $M0/file.copy.post2
+TEST truncate -s 1M $M0/file.copy.post2
+TEST cmp $M0/file.copy.pre $M0/file.copy.post2
+TEST unlink $M0/file
+
+#Make sure offset/size are modified so that 3 blocks are allocated
+TEST touch $M0/f1
+TEST fallocate -o 1280 -l 1024 $M0/f1
+EXPECT "^2304$" stat -c "%s" $M0/f1
+EXPECT "^1536$" stat -c "%s" $B0/${V0}0/f1
+
+EXPECT_WITHIN $UMOUNT_TIMEOUT "Y" force_umount $M0
+
+cleanup;
diff --git a/tests/basic/ec/ec-rebalance.t b/tests/basic/ec/ec-rebalance.t
new file mode 100644
index 00000000000..b5c30727a15
--- /dev/null
+++ b/tests/basic/ec/ec-rebalance.t
@@ -0,0 +1,60 @@
+#!/bin/bash
+#
+# This will test the rebalance failure reported in 1447559
+#
+###
+
+. $(dirname $0)/../../include.rc
+. $(dirname $0)/../../volume.rc
+. $(dirname $0)/../../fallocate.rc
+
+cleanup
+
+#cleate and start volume
+TEST glusterd
+TEST pidof glusterd
+TEST $CLI volume create $V0 disperse 3 redundancy 1 $H0:$B0/${V0}{0..2}
+TEST $CLI volume start $V0
+
+#Mount the volume
+TEST $GFS --volfile-id=/$V0 --volfile-server=$H0 $M0;
+EXPECT_WITHIN $CHILD_UP_TIMEOUT "3" ec_child_up_count $V0 0
+
+# Create files
+for i in {1..10}
+do
+    dd if=/dev/urandom of=$M0/file$i bs=1024k count=1
+done
+
+md5_1=$(md5sum $M0/file1 | awk '{print $1}')
+md5_2=$(md5sum $M0/file2 | awk '{print $1}')
+md5_3=$(md5sum $M0/file3 | awk '{print $1}')
+md5_4=$(md5sum $M0/file4 | awk '{print $1}')
+md5_5=$(md5sum $M0/file5 | awk '{print $1}')
+md5_6=$(md5sum $M0/file6 | awk '{print $1}')
+md5_7=$(md5sum $M0/file7 | awk '{print $1}')
+md5_8=$(md5sum $M0/file8 | awk '{print $1}')
+md5_9=$(md5sum $M0/file9 | awk '{print $1}')
+md5_10=$(md5sum $M0/file10 | awk '{print $1}')
+# Add brick
+TEST $CLI volume add-brick $V0 $H0:$B0/${V0}{3..5}
+
+#Trigger rebalance
+TEST $CLI volume rebalance $V0 start force
+EXPECT_WITHIN $REBALANCE_TIMEOUT "completed" rebalance_status_field $V0
+
+#Remount to avoid any caches
+EXPECT_WITHIN $UMOUNT_TIMEOUT "Y" force_umount $M0
+TEST $GFS --volfile-id=/$V0 --volfile-server=$H0 $M0;
+EXPECT "$md5_1" echo $(md5sum $M0/file1 | awk '{print $1}')
+EXPECT "$md5_2" echo $(md5sum $M0/file2 | awk '{print $1}')
+EXPECT "$md5_3" echo $(md5sum $M0/file3 | awk '{print $1}')
+EXPECT "$md5_4" echo $(md5sum $M0/file4 | awk '{print $1}')
+EXPECT "$md5_5" echo $(md5sum $M0/file5 | awk '{print $1}')
+EXPECT "$md5_6" echo $(md5sum $M0/file6 | awk '{print $1}')
+EXPECT "$md5_7" echo $(md5sum $M0/file7 | awk '{print $1}')
+EXPECT "$md5_8" echo $(md5sum $M0/file8 | awk '{print $1}')
+EXPECT "$md5_9" echo $(md5sum $M0/file9 | awk '{print $1}')
+EXPECT "$md5_10" echo $(md5sum $M0/file10 | awk '{print $1}')
+
+cleanup;