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test/lvol: test resize with ongoing I/O traffic

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Resize tests were extremely basic so far, extend them
with a test case that actually tries to do some I/O
before and after the resize.

I would like to keep it as a separate test case,
because it uses NBD which used to be quite buggy at
some point. If the resize tests fail on this new test
case, it means the previous very basic resize tests
have passed and the lvol resize functionality itself
doesn't show any failures - this might potentially
simplify some root causing later on.

Change-Id: I7ee45243ee4fc025fc71f6eee4c946211c07a78a
Signed-off-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Signed-off-by: Pawel Kaminski <pawelx.kaminski@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/462187
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This commit is contained in:
Darek Stojaczyk 2019-07-17 09:51:00 +02:00 committed by Jim Harris
parent 4c945d2332
commit 9d044f25f1
1 changed files with 71 additions and 0 deletions
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71
test/lvol/resize.sh
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@ -4,6 +4,7 @@ testdir=$(readlink -f $(dirname $0))
rootdir=$(readlink -f $testdir/../..)
source $rootdir/test/common/autotest_common.sh
source $rootdir/test/lvol/common.sh
source $rootdir/test/bdev/nbd_common.sh
# resize an lvol a few times
function test_resize_lvol() {
@ -85,6 +86,75 @@ function test_resize_lvol_negative() {
rpc_cmd bdev_malloc_delete "$malloc_name"
}
# resize an lvol a few times
function test_resize_lvol_with_io_traffic() {
# create an lvol store
malloc_name=$(rpc_cmd bdev_malloc_create $MALLOC_SIZE_MB $MALLOC_BS)
lvs_uuid=$(rpc_cmd bdev_lvol_create_lvstore "$malloc_name" lvs_test)
# calculate lvol size
lvol_size_mb=$( round_down $(( LVS_DEFAULT_CAPACITY_MB / 2 )) )
lvol_size=$(( lvol_size_mb * 1024 * 1024 ))
# create an lvol on top
lvol_uuid=$(rpc_cmd bdev_lvol_create -u "$lvs_uuid" lvol_test "$lvol_size_mb")
lvol=$(rpc_cmd bdev_get_bdevs -b "$lvol_uuid")
[ "$(jq -r '.[0].name' <<< "$lvol")" = "$lvol_uuid" ]
[ "$(jq -r '.[0].uuid' <<< "$lvol")" = "$lvol_uuid" ]
[ "$(jq -r '.[0].aliases[0]' <<< "$lvol")" = "lvs_test/lvol_test" ]
[ "$(jq -r '.[0].block_size' <<< "$lvol")" = "$MALLOC_BS" ]
[ "$(jq -r '.[0].num_blocks' <<< "$lvol")" = "$(( lvol_size / MALLOC_BS ))" ]
# prepare to do some I/O
trap 'nbd_stop_disks "$DEFAULT_RPC_ADDR" /dev/nbd0; exit 1' SIGINT SIGTERM EXIT
nbd_start_disks "$DEFAULT_RPC_ADDR" "$lvol_uuid" /dev/nbd0
# write to the entire lvol
count=$(( lvol_size / LVS_DEFAULT_CLUSTER_SIZE ))
dd if=/dev/urandom of=/dev/nbd0 oflag=direct bs="$LVS_DEFAULT_CLUSTER_SIZE" count=$count
# writing beyond lvol size should fail
offset=$(( lvol_size / LVS_DEFAULT_CLUSTER_SIZE + 1 ))
dd if=/dev/urandom of=/dev/nbd0 oflag=direct bs="$LVS_DEFAULT_CLUSTER_SIZE" seek=$offset count=1 && false
# resize the lvol to twice its original size
lvol_size_mb=$(( lvol_size_mb * 2 ))
lvol_size=$(( lvol_size_mb * 1024 * 1024 ))
rpc_cmd bdev_lvol_resize "$lvol_uuid" "$lvol_size_mb"
lvol=$(rpc_cmd bdev_get_bdevs -b "$lvol_uuid")
[ "$(jq -r '.[0].num_blocks' <<< "$lvol")" = "$(( lvol_size / MALLOC_BS ))" ]
# writing beyond the original lvol size should now succeed, we need
# to restart NBD though as it may still use the old, cached size
nbd_stop_disks "$DEFAULT_RPC_ADDR" /dev/nbd0
nbd_start_disks "$DEFAULT_RPC_ADDR" "$lvol_uuid" /dev/nbd0
dd if=/dev/urandom of=/dev/nbd0 oflag=direct bs="$LVS_DEFAULT_CLUSTER_SIZE" seek=$offset count=1
# lvol can't be downsized if they have any open descriptors, so close them now
trap - SIGINT SIGTERM EXIT
nbd_stop_disks "$DEFAULT_RPC_ADDR" /dev/nbd0
# resize lvol down to a single cluster
rpc_cmd bdev_lvol_resize "$lvol_uuid" "$LVS_DEFAULT_CLUSTER_SIZE_MB"
lvol=$(rpc_cmd bdev_get_bdevs -b "$lvol_uuid")
[ "$(jq -r '.[0].num_blocks' <<< "$lvol")" = "$(( LVS_DEFAULT_CLUSTER_SIZE / MALLOC_BS ))" ]
# make sure we can't write beyond the first cluster
trap 'nbd_stop_disks "$DEFAULT_RPC_ADDR" /dev/nbd0; exit 1' SIGINT SIGTERM EXIT
nbd_start_disks "$DEFAULT_RPC_ADDR" "$lvol_uuid" /dev/nbd0
dd if=/dev/urandom of=/dev/nbd0 oflag=direct bs="$LVS_DEFAULT_CLUSTER_SIZE" seek=1 count=1 && false
# clean up
trap - SIGINT SIGTERM EXIT
nbd_stop_disks "$DEFAULT_RPC_ADDR" /dev/nbd0
rpc_cmd bdev_lvol_delete "$lvol_uuid"
rpc_cmd bdev_get_bdevs -b "$lvol_uuid" && false
rpc_cmd bdev_lvol_delete_lvstore -u "$lvs_uuid"
rpc_cmd bdev_lvol_get_lvstores -u "$lvs_uuid" && false
rpc_cmd bdev_malloc_delete "$malloc_name"
}
modprobe nbd
$rootdir/app/spdk_tgt/spdk_tgt &
spdk_pid=$!
trap 'killprocess "$spdk_pid"; exit 1' SIGINT SIGTERM EXIT
@ -92,6 +162,7 @@ waitforlisten $spdk_pid
run_test "test_resize_lvol" test_resize_lvol
run_test "test_resize_lvol_negative" test_resize_lvol_negative
run_test "test_resize_lvol_with_io_traffic" test_resize_lvol_with_io_traffic
trap - SIGINT SIGTERM EXIT
killprocess $spdk_pid