From mboxrd@z Thu Jan 1 00:00:00 1970 From: James Bottomley Subject: Re: Tagged overlapped commands Date: Sun, 07 Dec 2014 23:02:58 -0800 Message-ID: <1418022178.21408.5.camel@HansenPartnership.com> References: <1417709828.8998.7.camel@HansenPartnership.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: Received: from bedivere.hansenpartnership.com ([66.63.167.143]:60176 "EHLO bedivere.hansenpartnership.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753941AbaLHHDA (ORCPT ); Mon, 8 Dec 2014 02:03:00 -0500 In-Reply-To: Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: Andrew Brooks Cc: linux-scsi Adding linux-scsi back to cc. Please don't drop because others may be interested and it allows search engines to find the answer. On Fri, 2014-12-05 at 13:09 +0000, Andrew Brooks wrote: > On 4 December 2014 at 16:17, James Bottomley < > James.Bottomley@hansenpartnership.com> wrote: > > > The error message likely means that the tape device had more than one > > command outstanding at once (i.e. one command was sent while the current > > command was still pending). It could also mean that a tag got re-used > > (same tag issued while command with that tag was outstanding) but for a > > tape I think the former is more likely. Is the queue depth set to one > > for the device? > > > > Thanks for your reply, How can I configure the queue depth? it should be under /sys/class/scsi_device//device/queue_depth you can (as root) echo a value in there to change the depth. James