glusterfs

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#!/bin/bash
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. $(dirname $0)/../../include.rc
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. $(dirname $0)/../../volume.rc
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cleanup
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FILE_COUNT_TIME=5
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function get_shard_count {
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    ls $1/$2.* | wc -l
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}
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TEST glusterd
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TEST pidof glusterd
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TEST $CLI volume create $V0 replica 2 $H0:$B0/${V0}{0..3}
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TEST $CLI volume set $V0 features.shard on
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TEST $CLI volume set $V0 features.shard-block-size 4MB
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TEST $CLI volume start $V0
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TEST $GFS --volfile-id=$V0 --volfile-server=$H0 $M0
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# Create a file.
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TEST touch $M0/foo
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TEST dd if=/dev/urandom of=$M0/foo bs=1M count=10
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# This should ensure /.shard is created on the bricks.
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TEST stat $B0/${V0}0/.shard
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TEST stat $B0/${V0}1/.shard
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TEST stat $B0/${V0}2/.shard
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TEST stat $B0/${V0}3/.shard
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#Note the size of the file, it should be 10M
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EXPECT '10485760' stat -c %s $M0/foo
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gfid_foo=$(get_gfid_string $M0/foo)
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TEST build_tester $(dirname $0)/bug-shard-discard.c -lgfapi -Wall -O2
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#Call discard on the file at off=7M and len=3M
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TEST $(dirname $0)/bug-shard-discard $H0 $V0 /foo 7340032 3145728 `gluster --print-logdir`/glfs-$V0.log
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#Ensure that discard doesn't change the original size of the file.
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EXPECT '10485760' stat -c %s $M0/foo
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# Ensure that the last shard is all zero'd out
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EXPECT "1" file_all_zeroes `find $B0 -name $gfid_foo.2`
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EXPECT_NOT "1" file_all_zeroes `find $B0 -name $gfid_foo.1`
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# Now unlink the file. And ensure that all shards associated with the file are cleaned up
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TEST unlink $M0/foo
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EXPECT_WITHIN $FILE_COUNT_TIME 0 get_shard_count $B0/${V0}0/.shard $gfid_foo
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EXPECT_WITHIN $FILE_COUNT_TIME 0 get_shard_count $B0/${V0}1/.shard $gfid_foo
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EXPECT_WITHIN $FILE_COUNT_TIME 0 get_shard_count $B0/${V0}2/.shard $gfid_foo
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EXPECT_WITHIN $FILE_COUNT_TIME 0 get_shard_count $B0/${V0}3/.shard $gfid_foo
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TEST ! stat $M0/foo
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#clean up everything
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EXPECT_WITHIN $UMOUNT_TIMEOUT "Y" force_umount $M0
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TEST $CLI volume stop $V0
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TEST $CLI volume delete $V0
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TEST rm -f $(dirname $0)/bug-shard-discard
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cleanup
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