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=== Description (from pull-request) ===
Otherwise CentOS 7 VM guests can't mount 9p shares.
Signed-off-by: Thomas Parrott <thomas.parr...@canonical.com>
From 0b89e4b39881a1463c0b8a58ea9a9f3481652206 Mon Sep 17 00:00:00 2001
From: Thomas Parrott <thomas.parr...@canonical.com>
Date: Thu, 18 Jun 2020 09:29:39 +0100
Subject: [PATCH] lxd/instance/drivers/driver/qemu: Adds trans=virtio to 9p
mounts
Otherwise CentOS 7 VM guests can't mount 9p shares.
Signed-off-by: Thomas Parrott <thomas.parr...@canonical.com>
---
lxd/instance/drivers/driver_qemu.go | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/lxd/instance/drivers/driver_qemu.go
b/lxd/instance/drivers/driver_qemu.go
index 8316e05ab4..8ebb0fdd41 100644
--- a/lxd/instance/drivers/driver_qemu.go
+++ b/lxd/instance/drivers/driver_qemu.go
@@ -1912,6 +1912,11 @@ func (vm *qemu) addDriveDirConfig(sb *strings.Builder,
bus *qemuBus, fdFiles *[]
FSType: driveConf.FSType,
}
+ // If mount type is 9p, we need to specify to use the virtio transport
to support more VM guest OSes.
+ if agentMount.FSType == "9p" {
+ agentMount.Options = append(agentMount.Options, "trans=virtio")
+ }
+
// Indicate to agent to mount this readonly. Note: This is purely to
indicate to VM guest that this is
// readonly, it should *not* be used as a security measure, as the VM
guest could remount it R/W.
if shared.StringInSlice("ro", driveConf.Opts) {
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