From 4c382f6bee06a3af0b05e321beca89e39b6caa1f Mon Sep 17 00:00:00 2001 From: John Snow Date: Wed, 27 Mar 2019 17:22:27 +0100 Subject: [PATCH 088/163] nbd: Forbid nbd-server-stop when server is not running RH-Author: John Snow Message-id: <20190327172308.31077-15-jsnow@redhat.com> Patchwork-id: 85187 O-Subject: [RHEL-7.7 qemu-kvm-rhev PATCH 14/55] nbd: Forbid nbd-server-stop when server is not running Bugzilla: 1691009 RH-Acked-by: Stefan Hajnoczi RH-Acked-by: Max Reitz RH-Acked-by: Miroslav Rezanina From: Eric Blake Since we already forbid other nbd-server commands when not in the right state, it is unlikely that any caller was relying on a second stop to behave as a silent no-op. Update iotest 223 to show the improved behavior. Signed-off-by: Eric Blake Message-Id: <20190111194720.15671-3-eblake@redhat.com> Reviewed-by: Vladimir Sementsov-Ogievskiy (cherry picked from commit 7801c3a7fd7042fd2f9435af4b9a6d2094073174) Signed-off-by: John Snow Signed-off-by: Miroslav Rezanina --- blockdev-nbd.c | 5 +++++ tests/qemu-iotests/223 | 2 +- tests/qemu-iotests/223.out | 2 +- 3 files changed, 7 insertions(+), 2 deletions(-) diff --git a/blockdev-nbd.c b/blockdev-nbd.c index 1d170c8..ca58491 100644 --- a/blockdev-nbd.c +++ b/blockdev-nbd.c @@ -214,6 +214,11 @@ void qmp_nbd_server_remove(const char *name, void qmp_nbd_server_stop(Error **errp) { + if (!nbd_server) { + error_setg(errp, "NBD server not running"); + return; + } + nbd_export_close_all(); nbd_server_free(nbd_server); diff --git a/tests/qemu-iotests/223 b/tests/qemu-iotests/223 index 61b46a2..a401609 100755 --- a/tests/qemu-iotests/223 +++ b/tests/qemu-iotests/223 @@ -172,7 +172,7 @@ _send_qemu_cmd $QEMU_HANDLE '{"execute":"nbd-server-remove", _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":"nbd-server-stop"}' "error" # Again _send_qemu_cmd $QEMU_HANDLE '{"execute":"quit"}' "return" # success, all done diff --git a/tests/qemu-iotests/223.out b/tests/qemu-iotests/223.out index c1eed62..7d28c1a 100644 --- a/tests/qemu-iotests/223.out +++ b/tests/qemu-iotests/223.out @@ -69,6 +69,6 @@ read 2097152/2097152 bytes at offset 2097152 {"return": {}} {"error": {"class": "GenericError", "desc": "Export 'n2' is not found"}} {"return": {}} -{"return": {}} +{"error": {"class": "GenericError", "desc": "NBD server not running"}} {"return": {}} *** done -- 1.8.3.1