linux-kernel - Re: [PATCH] scsi: don't look for NULL devices handlers by name

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Message-ID: <1522105233.3102.32.camel@wdc.com>
Date:   Mon, 26 Mar 2018 23:00:35 +0000
From:   Bart Van Assche <Bart.VanAssche@....com>
To:     "jthumshirn@...e.de" <jthumshirn@...e.de>,
        "martin.petersen@...cle.com" <martin.petersen@...cle.com>
CC:     "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "hare@...e.de" <hare@...e.de>
Subject: Re: [PATCH] scsi: don't look for NULL devices handlers by name

On Fri, 2018-03-23 at 14:37 +0100, Johannes Thumshirn wrote:
> Currently scsi_dh_lookup() doesn't check for NULL as a device
> name. This combined with nvme over dm-mapth results in the following
> messages emitted by device-mapper:
> 
>  device-mapper: multipath: Could not failover device 259:67: Handler scsi_dh_(null) error 14.
> 
> Let scsi_dh_lookup() fail fast on NULL names.

Reviewed-by: Bart Van Assche <bart.vanassche@....com>