From 8bcf3068eb2d1da79231e6684800b958e7e3dcd7 Mon Sep 17 00:00:00 2001
From: Alexandre Derumier <aderumier@odiso.com>
Date: Wed, 1 Apr 2015 05:11:44 +0200
Subject: [PATCH] forbid hot-unplug of virtioscsi + iothread drive

qemu (<=2.3) currently segfault on drive_del

Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
---
 PVE/QemuServer.pm | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/PVE/QemuServer.pm b/PVE/QemuServer.pm
index 6b2bab84..9fe16847 100644
--- a/PVE/QemuServer.pm
+++ b/PVE/QemuServer.pm
@@ -3379,6 +3379,10 @@ sub vm_deviceunplug {
 
     } elsif ($deviceid =~ m/^(scsi)(\d+)$/) {
 
+	#qemu 2.3 segfault on drive_del with virtioscsi + iothread
+	my $device = parse_drive($deviceid, $conf->{$deviceid});
+	die "virtioscsi with iothread is not hot-unplugglable currently" if $device->{iothread};
+
         qemu_devicedel($vmid, $deviceid);
         qemu_drivedel($vmid, $deviceid);
 	qemu_deletescsihw($conf, $vmid, $deviceid);