qemu-kvm/SOURCES/kvm-pr-manager-helper-report-event-on-connection-disconn.patch

119 lines
3.6 KiB
Diff

From 83a0b1b1828bf5e22da506c39848a3b226892c3d Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <pbonzini@redhat.com>
Date: Fri, 6 Jul 2018 17:56:56 +0200
Subject: [PATCH 196/268] pr-manager-helper: report event on
connection/disconnection
RH-Author: Paolo Bonzini <pbonzini@redhat.com>
Message-id: <20180706175659.30615-7-pbonzini@redhat.com>
Patchwork-id: 81247
O-Subject: [RHEL7.6 qemu-kvm-rhev PATCH 6/9] pr-manager-helper: report event on connection/disconnection
Bugzilla: 1533158
RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Michal Privoznik <mprivozn@redhat.com>
Let management know if there were any problems communicating with
qemu-pr-helper. The event is edge-triggered, and is sent every time
the connection status of the pr-manager-helper object changes.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
(cherry picked from commit e2c81a45101fdddfd47477a1805806f2c76639bf)
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
qapi/block.json | 24 ++++++++++++++++++++++++
scsi/pr-manager-helper.c | 14 ++++++++++++++
2 files changed, 38 insertions(+)
diff --git a/qapi/block.json b/qapi/block.json
index cf63ea2..528c1e6 100644
--- a/qapi/block.json
+++ b/qapi/block.json
@@ -335,6 +335,30 @@
'data': { 'device': 'str', 'id': 'str', 'tray-open': 'bool' } }
##
+# @PR_MANAGER_STATUS_CHANGED:
+#
+# Emitted whenever the connected status of a persistent reservation
+# manager changes.
+#
+# @id: The id of the PR manager object
+#
+# @connected: true if the PR manager is connected to a backend
+#
+# Since: 3.0
+#
+# Example:
+#
+# <- { "event": "PR_MANAGER_STATUS_CHANGED",
+# "data": { "id": "pr-helper0",
+# "connected": true
+# },
+# "timestamp": { "seconds": 1519840375, "microseconds": 450486 } }
+#
+##
+{ 'event': 'PR_MANAGER_STATUS_CHANGED',
+ 'data': { 'id': 'str', 'connected': 'bool' } }
+
+##
# @QuorumOpType:
#
# An enumeration of the quorum operation types
diff --git a/scsi/pr-manager-helper.c b/scsi/pr-manager-helper.c
index b11481b..519a296 100644
--- a/scsi/pr-manager-helper.c
+++ b/scsi/pr-manager-helper.c
@@ -17,6 +17,7 @@
#include "io/channel.h"
#include "io/channel-socket.h"
#include "pr-helper.h"
+#include "qapi/qapi-events-block.h"
#include <scsi/sg.h>
@@ -38,6 +39,16 @@ typedef struct PRManagerHelper {
QIOChannel *ioc;
} PRManagerHelper;
+static void pr_manager_send_status_changed_event(PRManagerHelper *pr_mgr)
+{
+ char *id = object_get_canonical_path_component(OBJECT(pr_mgr));
+
+ if (id) {
+ qapi_event_send_pr_manager_status_changed(id, !!pr_mgr->ioc,
+ &error_abort);
+ }
+}
+
/* Called with lock held. */
static int pr_manager_helper_read(PRManagerHelper *pr_mgr,
void *buf, int sz, Error **errp)
@@ -47,6 +58,7 @@ static int pr_manager_helper_read(PRManagerHelper *pr_mgr,
if (r < 0) {
object_unref(OBJECT(pr_mgr->ioc));
pr_mgr->ioc = NULL;
+ pr_manager_send_status_changed_event(pr_mgr);
return -EINVAL;
}
@@ -72,6 +84,7 @@ static int pr_manager_helper_write(PRManagerHelper *pr_mgr,
assert(n_written != QIO_CHANNEL_ERR_BLOCK);
object_unref(OBJECT(pr_mgr->ioc));
pr_mgr->ioc = NULL;
+ pr_manager_send_status_changed_event(pr_mgr);
return n_written < 0 ? -EINVAL : 0;
}
@@ -127,6 +140,7 @@ static int pr_manager_helper_initialize(PRManagerHelper *pr_mgr,
goto out_close;
}
+ pr_manager_send_status_changed_event(pr_mgr);
return 0;
out_close:
--
1.8.3.1