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nbd: Add some error case testing to iotests 223 

Testing success paths is important, but it's also nice to highlight
expected failure handling, to show that we don't crash, and so that
upcoming tests that change behavior can demonstrate the resulting
effects on error paths.

Add the following errors:
Attempting to export without a running server
Attempting to start a second server
Attempting to export a bad node name
Attempting to export a name that is already exported
Attempting to export an enabled bitmap
Attempting to remove an already removed export
Attempting to quit server a second time

All of these properly complain except for a second server-stop,
which will be fixed next.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20190111194720.15671-2-eblake@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
master
Eric Blake 2019-01-11 13:47:13 -06:00
parent 9d97658020
commit 2d2fd67428
2 changed files with 26 additions and 4 deletions
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19
tests/qemu-iotests/223
View File

@ -107,6 +107,7 @@ echo
_launch_qemu 2> >(_filter_nbd)
# Intentionally provoke some errors as well, to check error handling
silent=
_send_qemu_cmd $QEMU_HANDLE '{"execute":"qmp_capabilities"}' "return"
_send_qemu_cmd $QEMU_HANDLE '{"execute":"blockdev-add",
@ -114,17 +115,28 @@ _send_qemu_cmd $QEMU_HANDLE '{"execute":"blockdev-add",
"file":{"driver":"file", "filename":"'"$TEST_IMG"'"}}}' "return"
_send_qemu_cmd $QEMU_HANDLE '{"execute":"block-dirty-bitmap-disable",
"arguments":{"node":"n", "name":"b"}}' "return"
_send_qemu_cmd $QEMU_HANDLE '{"execute":"block-dirty-bitmap-disable",
"arguments":{"node":"n", "name":"b2"}}' "return"
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
"arguments":{"device":"n"}}' "error" # Attempt add without server
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-start",
"arguments":{"addr":{"type":"unix",
"data":{"path":"'"$TEST_DIR/nbd"'"}}}}' "return"
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-start",
"arguments":{"addr":{"type":"unix",
"data":{"path":"'"$TEST_DIR/nbd"1'"}}}}' "error" # Attempt second server
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
"arguments":{"device":"n"}}' "return"
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
"arguments":{"device":"nosuch"}}' "error" # Attempt to export missing node
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
"arguments":{"device":"n"}}' "error" # Attempt to export same name twice
_send_qemu_cmd $QEMU_HANDLE '{"execute":"x-nbd-server-add-bitmap",
"arguments":{"name":"n", "bitmap":"b"}}' "return"
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-add",
"arguments":{"device":"n", "name":"n2"}}' "return"
_send_qemu_cmd $QEMU_HANDLE '{"execute":"x-nbd-server-add-bitmap",
"arguments":{"name":"n2", "bitmap":"b2"}}' "error" # Attempt enabled bitmap
_send_qemu_cmd $QEMU_HANDLE '{"execute":"block-dirty-bitmap-disable",
"arguments":{"node":"n", "name":"b2"}}' "return"
_send_qemu_cmd $QEMU_HANDLE '{"execute":"x-nbd-server-add-bitmap",
"arguments":{"name":"n2", "bitmap":"b2"}}' "return"
@ -157,7 +169,10 @@ _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove",
"arguments":{"name":"n"}}' "return"
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove",
"arguments":{"name":"n2"}}' "return"
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove",
"arguments":{"name":"n2"}}' "error" # Attempt duplicate clean
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-stop"}' "return"
_send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-stop"}' "return" # Oops
_send_qemu_cmd $QEMU_HANDLE '{"execute":"quit"}' "return"
# success, all done

11
tests/qemu-iotests/223.out
View File

@ -27,10 +27,15 @@ wrote 2097152/2097152 bytes at offset 2097152
{"return": {}}
{"return": {}}
{"return": {}}
{"error": {"class": "GenericError", "desc": "NBD server not running"}}
{"return": {}}
{"error": {"class": "GenericError", "desc": "NBD server already running"}}
{"return": {}}
{"error": {"class": "GenericError", "desc": "Cannot find device=nosuch nor node_name=nosuch"}}
{"error": {"class": "GenericError", "desc": "NBD server already has export named 'n'"}}
{"return": {}}
{"return": {}}
{"return": {}}
{"return": {}}
{"error": {"class": "GenericError", "desc": "Bitmap 'b2' is enabled"}}
{"return": {}}
{"return": {}}
@ -62,6 +67,8 @@ read 2097152/2097152 bytes at offset 2097152
{"return": {}}
{"return": {}}
{"error": {"class": "GenericError", "desc": "Export 'n2' is not found"}}
{"return": {}}
{"return": {}}
{"return": {}}
*** done