incusd/instance/drivers: Prevent calling 'deviceAttachBlockDevice' on the root disk

presztak · presztak · commit 0991b6ac37d1 · 2025-07-24T11:02:05.000+02:00
Signed-off-by: Piotr Resztak &lt;piotr.resztak@futurfusion.io&gt;
diff --git a/internal/server/instance/drivers/driver_qemu.go b/internal/server/instance/drivers/driver_qemu.go
@@ -2487,7 +2487,7 @@ func (d *qemu) deviceStart(dev device.Device, instanceRunning bool) (*deviceConf
 					if err != nil {
 						return nil, err
 					}
-				} else {
+				} else if mount.TargetPath != "/" {
 					err = d.deviceAttachBlockDevice(dev.Name(), configCopy, mount)
 					if err != nil {
 						return nil, err

Original file line number	Diff line number	Diff line change
`@@ -2487,7 +2487,7 @@ func (d qemu) deviceStart(dev device.Device, instanceRunning bool) (deviceConf`
`2487`	`2487`	`if err != nil {`
`2488`	`2488`	`return nil, err`
`2489`	`2489`	`}`
`2490`		`- } else {`
	`2490`	`+ } else if mount.TargetPath != "/" {`
`2491`	`2491`	`err = d.deviceAttachBlockDevice(dev.Name(), configCopy, mount)`
`2492`	`2492`	`if err != nil {`
`2493`	`2493`	`return nil, err`