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#!/bin/bash
. $(dirname $0)/../include.rc
. $(dirname $0)/../volume.rc
. $(dirname $0)/../dht.rc
## TO-DO: Fix the following once the dht du refresh interval issue is fixed:
## 1. Do away with sleep(1).
## 2. Do away with creation of empty files.
cleanup;
TEST glusterd;
TEST pidof glusterd;
# Create 2 loop devices, one per brick.
TEST truncate -s 100M $B0/brick1
TEST truncate -s 100M $B0/brick2
TEST L1=`losetup --find --show $B0/brick1`
TEST mkfs.xfs $L1
TEST L2=`losetup --find --show $B0/brick2`
TEST mkfs.xfs $L2
TEST mkdir -p $B0/${V0}{1,2}
TEST mount -t xfs $L1 $B0/${V0}1
TEST mount -t xfs $L2 $B0/${V0}2
# Create a plain distribute volume with 2 subvols.
TEST $CLI volume create $V0 $H0:$B0/${V0}{1,2};
TEST $CLI volume start $V0;
EXPECT "Started" volinfo_field $V0 'Status';
TEST $CLI volume quota $V0 enable;
TEST $CLI volume set $V0 features.quota-deem-statfs on
TEST $CLI volume quota $V0 limit-usage / 150MB;
TEST $CLI volume set $V0 cluster.min-free-disk 50%
TEST glusterfs -s $H0 --volfile-id=$V0 $M0
# Make sure quota-deem-statfs is working as expected
EXPECT "150M" echo `df -h $M0 -P | tail -1 | awk {'print $2'}`
# Create a new file 'foo' under the root of the volume, which hashes to subvol-0
# of DHT, that consumes 40M
TEST dd if=/dev/zero of=$M0/foo bs=5M count=8
TEST stat $B0/${V0}1/foo
TEST ! stat $B0/${V0}2/foo
# Create a new file 'bar' under the root of the volume, which hashes to subvol-1
# of DHT, that consumes 40M
TEST dd if=/dev/zero of=$M0/bar bs=5M count=8
TEST ! stat $B0/${V0}1/bar
TEST stat $B0/${V0}2/bar
# Touch a zero-byte file on the root of the volume to make sure the statfs data
# on DHT is refreshed
sleep 1;
TEST touch $M0/empty1;
# At this point, the available space on each subvol {60M,60M} is greater than
# their min-free-disk {50M,50M}, but if this bug still exists, then
# the total available space on the volume as perceived by DHT should be less
# than min-free-disk, i.e.,
#
# consumed space returned per subvol by quota = (40M + 40M) = 80M
#
# Therefore, consumed space per subvol computed by DHT WITHOUT the fix would be:
# (80M/150M)*100 = 53%
#
# Available space per subvol as perceived by DHT with the bug = 47%
# which is less than min-free-disk
# Now I create a file that hashes to subvol-1 (counting from 0) of DHT.
# If this bug still exists,then DHT should be routing this creation to subvol-0.
# If this bug is fixed, then DHT should be routing the creation to subvol-1 only
# as it has more than min-free-disk space available.
TEST dd if=/dev/zero of=$M0/file bs=1K count=1
sleep 1;
TEST ! stat $B0/${V0}1/file
TEST stat $B0/${V0}2/file
# Touch another zero-byte file on the root of the volume to refresh statfs
# values stored by DHT.
TEST touch $M0/empty2;
# Now I create a new file that hashes to subvol-0, at the end of which, there
# will be less than min-free-disk space available on it.
TEST dd if=/dev/zero of=$M0/fil bs=5M count=4
sleep 1;
TEST stat $B0/${V0}1/fil
TEST ! stat $B0/${V0}2/fil
# Touch to refresh statfs info cached by DHT
TEST touch $M0/empty3;
# Now I create a file that hashes to subvol-0 but since it has less than
# min-free-disk space available, its data will be cached on subvol-1.
TEST dd if=/dev/zero of=$M0/zz bs=5M count=1
TEST stat $B0/${V0}1/zz
TEST stat $B0/${V0}2/zz
EXPECT "$V0-client-1" dht_get_linkto_target "$B0/${V0}1/zz"
EXPECT "1" is_dht_linkfile "$B0/${V0}1/zz"
cleanup;
|
