qemu-iotests: add 083 NBD client disconnect tests

This new test case uses nbd-fault-injector.py to simulate broken TCP
connections at each stage in the NBD protocol.  This way we can exercise
block/nbd-client.c's socket error handling code paths.

In particular, this serves as a regression test to make sure
nbd-client.c doesn't cause an infinite loop by leaving its
nbd_receive_reply() fd handler registered after the connection has been
closed.  This bug was fixed in an earlier patch.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 163 insertions, 0 deletions

diff --git a/tests/qemu-iotests/083.out b/tests/qemu-iotests/083.out
new file mode 100644
index 0000000000..85ee8d6dd7
--- /dev/null
+++ b/tests/qemu-iotests/083.out
@@ -0,0 +1,163 @@
+QA output created by 083
+=== Check disconnect before neg1 ===
+
+
+qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not open image: Invalid argument
+no file open, try 'help open'
+
+=== Check disconnect after neg1 ===
+
+
+qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not open image: Invalid argument
+no file open, try 'help open'
+
+=== Check disconnect 8 neg1 ===
+
+
+qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not open image: Invalid argument
+no file open, try 'help open'
+
+=== Check disconnect 16 neg1 ===
+
+
+qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not open image: Invalid argument
+no file open, try 'help open'
+
+=== Check disconnect before export ===
+
+
+qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not open image: Invalid argument
+no file open, try 'help open'
+
+=== Check disconnect after export ===
+
+
+qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not open image: Invalid argument
+no file open, try 'help open'
+
+=== Check disconnect 4 export ===
+
+
+qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not open image: Invalid argument
+no file open, try 'help open'
+
+=== Check disconnect 12 export ===
+
+
+qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not open image: Invalid argument
+no file open, try 'help open'
+
+=== Check disconnect 16 export ===
+
+
+qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not open image: Invalid argument
+no file open, try 'help open'
+
+=== Check disconnect before neg2 ===
+
+
+qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not open image: Invalid argument
+no file open, try 'help open'
+
+=== Check disconnect after neg2 ===
+
+
+qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not read image for determining its format: Input/output error
+no file open, try 'help open'
+
+=== Check disconnect 8 neg2 ===
+
+
+qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not open image: Invalid argument
+no file open, try 'help open'
+
+=== Check disconnect 10 neg2 ===
+
+
+qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not open image: Invalid argument
+no file open, try 'help open'
+
+=== Check disconnect before request ===
+
+
+qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not read image for determining its format: Input/output error
+no file open, try 'help open'
+
+=== Check disconnect after request ===
+
+
+qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not read image for determining its format: Input/output error
+no file open, try 'help open'
+
+=== Check disconnect before reply ===
+
+
+qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not read image for determining its format: Input/output error
+no file open, try 'help open'
+
+=== Check disconnect after reply ===
+
+
+qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not read image for determining its format: Input/output error
+no file open, try 'help open'
+
+=== Check disconnect 4 reply ===
+
+
+qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not read image for determining its format: Input/output error
+no file open, try 'help open'
+
+=== Check disconnect 8 reply ===
+
+
+qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not read image for determining its format: Input/output error
+no file open, try 'help open'
+
+=== Check disconnect before data ===
+
+
+qemu-io: can't open device nbd:127.0.0.1:PORT:exportname=foo: Could not read image for determining its format: Input/output error
+no file open, try 'help open'
+
+=== Check disconnect after data ===
+
+
+read failed: Input/output error
+
+=== Check disconnect before neg-classic ===
+
+
+qemu-io: can't open device nbd:127.0.0.1:PORT: Could not open image: Invalid argument
+no file open, try 'help open'
+
+=== Check disconnect 8 neg-classic ===
+
+
+qemu-io: can't open device nbd:127.0.0.1:PORT: Could not open image: Invalid argument
+no file open, try 'help open'
+
+=== Check disconnect 16 neg-classic ===
+
+
+qemu-io: can't open device nbd:127.0.0.1:PORT: Could not open image: Invalid argument
+no file open, try 'help open'
+
+=== Check disconnect 24 neg-classic ===
+
+
+qemu-io: can't open device nbd:127.0.0.1:PORT: Could not open image: Invalid argument
+no file open, try 'help open'
+
+=== Check disconnect 28 neg-classic ===
+
+
+qemu-io: can't open device nbd:127.0.0.1:PORT: Could not open image: Invalid argument
+no file open, try 'help open'
+
+=== Check disconnect after neg-classic ===
+
+
+qemu-io: can't open device nbd:127.0.0.1:PORT: Could not read image for determining its format: Input/output error
+no file open, try 'help open'
+
+*** done