From: James Bottomley <James.Bottomley@HansenPartnership.com>
To: "Alan Stern" <stern@rowland.harvard.edu>,
"Jérôme Carretero" <cJ-ko@zougloub.eu>
Cc: Tejun Heo <tj@kernel.org>, Hans de Goede <hdegoede@redhat.com>,
Jens <jens-bugzilla.kernel.org@spamfreemail.de>,
Andrey Astafyev <1@246060.ru>, Oliver Neukum <oneukum@suse.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-usb@vger.kernel.org, linux-scsi@vger.kernel.org
Subject: Re: Seagate External SMR drive USB resets (was: Re: [PATCH] uas: Add US_FL_NO_ATA_1X quirk for one more Seagate device)
Date: Thu, 16 Nov 2017 07:40:08 +0900 [thread overview]
Message-ID: <1510785608.6323.10.camel@HansenPartnership.com> (raw)
In-Reply-To: <Pine.LNX.4.44L0.1711151656350.1363-100000@iolanthe.rowland.org>
On Wed, 2017-11-15 at 17:02 -0500, Alan Stern wrote:
> On Wed, 15 Nov 2017, Jérôme Carretero wrote:
> > > Because with several of these drives / lots of activity /
> occasional
> > > issues, it looks like it will be hard to catch (yes I can use
> > > usbmon).
> > >
> > > - It looks like there is no configurable timeout for USB MSC
> requests.
> > > Perhaps the device is not responding in time and this is why
> it's
> > > reset?
>
> Timeouts are set by the SCSI layer. I believe they are rather long
> (30 seconds, by default). Presumably they are configurable, although
> I would have to do some digging to figure out how.
They're in /sys/class/scsi_device/<id>/device/timeout
jejb@bedivere:~> ls -l /sys/class/scsi_device/0\:0\:0\:0/device/timeout
-rw-r--r-- 1 root root 4096 Nov 15 14:37 /sys/class/scsi_device/0:0:0:0/device/timeout
jejb@bedivere:~> cat /sys/class/scsi_device/0\:0\:0\:0/device/timeout
30
You can actually have a udev rule adjust them on a per device id basis.
James
next prev parent reply other threads:[~2017-11-15 22:40 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-10 15:13 [PATCH] uas: Add US_FL_NO_ATA_1X quirk for one more Seagate device Hans de Goede
2017-11-12 21:42 ` Jérôme Carretero
[not found] ` <20171112164234.48b5185c-WI5o+PA4G9BYumZHjSPV5A@public.gmane.org>
2017-11-13 4:01 ` Andrey Astafyev
2017-11-13 6:14 ` Jérôme Carretero
2017-11-13 6:16 ` Andrey Astafyev
2017-11-13 7:14 ` Jérôme Carretero
[not found] ` <20171113011438.458369bf-WI5o+PA4G9BYumZHjSPV5A@public.gmane.org>
2017-11-13 9:04 ` Hans de Goede
[not found] ` <3d276729-63f7-9727-4a22-55849712439c-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2017-11-13 17:38 ` Jérôme Carretero
[not found] ` <20171113123814.4e70a498-WI5o+PA4G9BYumZHjSPV5A@public.gmane.org>
2017-11-15 21:43 ` Seagate External SMR drive USB resets (was: Re: [PATCH] uas: Add US_FL_NO_ATA_1X quirk for one more Seagate device) Jérôme Carretero
[not found] ` <20171115164314.74ce972f-WI5o+PA4G9BYumZHjSPV5A@public.gmane.org>
2017-11-15 21:49 ` Jérôme Carretero
[not found] ` <20171115164902.00d1330d-WI5o+PA4G9BYumZHjSPV5A@public.gmane.org>
2017-11-15 22:02 ` Alan Stern
2017-11-15 22:40 ` James Bottomley [this message]
2017-11-15 23:17 ` Jérôme Carretero
2017-11-16 4:21 ` Seagate External SMR drive USB resets (XHCI transfer error, not timeout) Jérôme Carretero
[not found] ` <20171115232129.102a1122-WI5o+PA4G9BYumZHjSPV5A@public.gmane.org>
2017-11-16 19:42 ` Alan Stern
2017-11-17 22:19 ` Jérôme Carretero
2017-11-18 16:57 ` Alan Stern
2017-11-15 23:27 ` Seagate External SMR drive USB resets... why? / USB storage debugging Jérôme Carretero
[not found] ` <20171115182708.25b97ebe-WI5o+PA4G9BYumZHjSPV5A@public.gmane.org>
2017-11-15 23:40 ` Bart Van Assche
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