Re: [bug report]scsi: drive letter drift problem

[Wenchao Hao]

On 2021/7/12 17:34, Stefan Hajnoczi wrote:
> On Mon, Jul 12, 2021 at 12:47:05PM +0800, Wenchao Hao wrote:
> > We deploy two SCSI disk in one SCSI host(virtio-scsi bus) for one machine,
> > whose ids are [0:0:0:0] and [0:0:1:0].
> >
> > Mostly, the device letter are assigned as following after reboot:
> > [0:0:0:0] --> sda
> > [0:0:1:0] --> sdb
> >
> > While in rare cases, the device letter shown as following:
> > [0:0:0:0] --> sdb
> > [0:0:1:0] --> sda
> >
> > Could we guarantee "sda" is assigned to [0:0:0:0] and "sdb" is assigned to
> > [0:0:1:0] or not?
> > If we can, then how?
> Is there a stable ID that you can use in /dev/disk/by-*?
>
> Stefan

Thanks, we found /dev/disk/by-path may be helpful