From: Mark Lord <mlord@pobox.com>
To: James Bottomley <James.Bottomley@suse.de>
Cc: ltuikov@yahoo.com, Alan Stern <stern@rowland.harvard.edu>,
Sarah Sharp <sarah.a.sharp@linux.intel.com>,
Jonas Schwertfeger <jschwertfeger@gmail.com>,
Dinh.Nguyen@freescale.com, Sergei Shtylyov <sshtylyov@mvista.com>,
Kay Sievers <kay.sievers@vrfy.org>,
David Zeuthen <david@fubar.dk>,
linux-hotplug@vger.kernel.org, linux-usb@vger.kernel.org,
USB Storage List <usb-storage@lists.one-eyed-alien.net>,
Matthew Dharm <mdharm-usb@one-eyed-alien.net>,
linux-scsi@vger.kernel.org,
Lennart Poettering <lennart@poettering.net>,
Douglas Gilbert <dgilbert@interlog.com>
Subject: Re: System hangs when using USB 3.0 HD with on Ubuntu
Date: Wed, 21 Apr 2010 14:13:45 +0000 [thread overview]
Message-ID: <4BCF0819.7090405@pobox.com> (raw)
In-Reply-To: <1271858694.2893.47.camel@mulgrave.site>
On 21/04/10 10:04 AM, James Bottomley wrote:
..
> But this isn't a userspace problem. By the time we present the device
> to userspace, we already know what it is ... so you can go by device
> type and only use ATA_12 for disk devices.
..
And most tools / programs can indeed do that.
But hdparm's mission is to ignore what the kernel thinks,
and speak directly to the drive whenever possible.
Because hdparm is an important part of how we verify
that the kernel is correct (or not). So I very much
prefer that it continue to work out the details as much
as it can without asking a possibly buggy kernel for help.
:)
That said.. what would you recommend as a way for a userspace
program to figure out whether to use ATA_12 or ATA_16 to talk
to a given arbitrary device name ?
I guess the info is in sysfs somewhere.
Thanks
--
Mark Lord
Real-Time Remedies Inc.
mlord@pobox.com
next prev parent reply other threads:[~2010-04-21 14:13 UTC|newest]
Thread overview: 107+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Pine.LNX.4.44L0.1003261705340.23253-100000@netrider.rowland.org>
[not found] ` <4BAD275A.7050903@interlog.com>
[not found] ` <59ca64281003300044g53ae5170xaf198bf99964fc36@mail.gmail.com>
2010-03-31 11:39 ` System hangs when using USB 3.0 HD with on Ubuntu Jonas Schwertfeger
2010-03-31 14:56 ` Alan Stern
2010-03-31 15:20 ` David Zeuthen
2010-03-31 16:12 ` Douglas Gilbert
2010-03-31 16:36 ` Alan Stern
2010-04-01 13:32 ` Jonas Schwertfeger
2010-04-01 13:42 ` Kay Sievers
2010-04-01 13:55 ` Jonas Schwertfeger
[not found] ` <r2k59ca64281004010655z93fedfa8rdeb447d82a848d9f-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-04-01 14:05 ` Kay Sievers
2010-04-02 12:40 ` Jonas Schwertfeger
[not found] ` <m2l59ca64281004020540z7e502130g22dfc035f1ceda6a-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-04-02 13:09 ` Jonas Schwertfeger
[not found] ` <t2t59ca64281004020609sa0f67f0dj5c127e3f0b2e4db2-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-04-02 14:12 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.1004021010130.1615-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2010-04-02 14:41 ` James Bottomley
[not found] ` <1270219267.2899.73.camel-0iu6Cu4xQGLYCGPCin2YbQ@public.gmane.org>
2010-04-02 14:57 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.1004021052040.1615-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2010-04-02 15:19 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.1004021114160.1615-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2010-04-02 15:50 ` Sergei Shtylyov
2010-04-02 15:59 ` James Bottomley
2010-04-07 18:08 ` Mark Lord
2010-04-07 18:29 ` James Bottomley
2010-04-07 19:18 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.1004071516260.5760-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2010-04-07 22:49 ` Mark Lord
2010-04-08 5:06 ` Jonas Schwertfeger
2010-04-02 16:21 ` Douglas Gilbert
2010-04-02 16:39 ` Douglas Gilbert
[not found] ` <4BB61DAF.7090709-qazKcTl6WRFWk0Htik3J/w@public.gmane.org>
2010-04-02 21:24 ` Mark Lord
2010-04-03 6:21 ` Jonas Schwertfeger
[not found] ` <4BB73EB3.3040308@pobox.com>
2010-04-03 15:40 ` Jonas Schwertfeger
2010-04-03 16:42 ` Alan Stern
2010-04-03 17:06 ` Jonas Schwertfeger
2010-04-03 20:58 ` Alan Stern
2010-04-04 1:29 ` Mark Lord
[not found] ` <Pine.LNX.4.44L0.1004031648230.21507-100000-pYrvlCTfrz9XsRXLowluHWD2FQJk+8+b@public.gmane.org>
2010-04-06 6:43 ` Jonas Schwertfeger
[not found] ` <4BBAD7FF.5000605-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2010-04-06 14:49 ` Alan Stern
2010-04-06 14:56 ` Jonas Schwertfeger
[not found] ` <Pine.LNX.4.44L0.1004061048590.1722-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2010-04-07 6:27 ` Jonas Schwertfeger
[not found] ` <4BBC25C9.5030201-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2010-04-07 14:36 ` Alan Stern
2010-04-07 14:42 ` Jonas Schwertfeger
2010-04-07 14:51 ` Jerone Young
2010-04-07 15:03 ` Alan Stern
2010-04-07 15:10 ` Jonas Schwertfeger
2010-04-09 15:38 ` Alan Stern
2010-04-09 16:39 ` Douglas Gilbert
[not found] ` <4BBF582F.4040707-qazKcTl6WRFWk0Htik3J/w@public.gmane.org>
2010-04-09 17:14 ` Sarah Sharp
2010-04-09 18:00 ` Jonas Schwertfeger
2010-04-09 19:25 ` Alan Stern
2010-04-09 21:54 ` Sarah Sharp
2010-04-12 7:48 ` Jonas Schwertfeger
2010-04-16 18:20 ` Sarah Sharp
2010-04-16 19:25 ` Alan Stern
2010-04-19 21:15 ` Sarah Sharp
2010-04-20 0:25 ` Mark Lord
2010-04-20 4:31 ` Mark Lord
2010-04-20 15:39 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.1004201045180.1837-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2010-04-20 17:37 ` Sarah Sharp
2010-04-20 19:48 ` Alan Stern
[not found] ` <4BCF0605.7080508@pobox.com>
[not found] ` <4BCF4120.4060806@pobox.com>
2010-04-21 18:27 ` Jonas Schwertfeger
2010-04-21 19:07 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.1004211506040.1422-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2010-04-21 19:24 ` Mark Lord
2010-04-26 16:27 ` Sarah Sharp
2010-04-29 8:44 ` Jonas Schwertfeger
2010-04-29 12:56 ` Mark Lord
2010-04-29 15:45 ` Alan Stern
2010-05-07 10:42 ` Jonas Schwertfeger
[not found] ` <4BE3EE87.6020505-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2010-05-07 15:03 ` Alan Stern
2010-05-11 6:54 ` Jonas Schwertfeger
2010-05-11 14:44 ` Alan Stern
2010-05-12 12:56 ` Mark Lord
2010-05-12 14:23 ` Douglas Gilbert
2010-05-12 14:37 ` Mark Lord
2010-05-12 14:45 ` Mark Lord
2010-05-12 15:09 ` Alan Stern
2010-05-12 15:39 ` James Bottomley
2010-05-12 18:48 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.1005121444450.1353-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2010-05-13 3:12 ` Mark Lord
2010-05-13 18:42 ` Alan Stern
2010-04-21 12:31 ` Luben Tuikov
2010-04-21 14:31 ` Alan Stern
2010-04-21 12:47 ` Luben Tuikov
2010-04-21 13:52 ` Mark Lord
2010-04-21 14:04 ` James Bottomley
2010-04-21 14:08 ` Mark Lord
2010-04-21 14:15 ` James Bottomley
2010-04-21 14:13 ` Mark Lord [this message]
2010-04-21 14:22 ` James Bottomley
[not found] ` <1271859728.2893.72.camel-0iu6Cu4xQGLYCGPCin2YbQ@public.gmane.org>
2010-04-21 14:53 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.1004211032460.1728-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2010-04-21 23:29 ` Stefan Richter
2010-04-20 17:48 ` Douglas Gilbert
2010-04-16 21:31 ` James Bottomley
2010-04-16 23:56 ` Douglas Gilbert
2010-04-19 15:04 ` Jonas Schwertfeger
2010-04-19 16:02 ` Alan Stern
2010-04-19 20:45 ` Sarah Sharp
2010-04-02 17:36 ` Sarah Sharp
2010-03-31 16:37 ` David Zeuthen
[not found] ` <1270053444.16657.17.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2010-03-31 16:58 ` Lennart Poettering
2010-03-31 17:03 ` Lennart Poettering
[not found] ` <20100331165807.GA20547-kS5D54t9nk0aINubkmmoJbNAH6kLmebB@public.gmane.org>
2010-03-31 17:17 ` David Zeuthen
2010-03-31 17:06 ` David Zeuthen
[not found] ` <1270049200.2302.320.camel@laptop>
2010-03-31 15:37 ` Jonas Schwertfeger
2010-04-21 14:58 ` Luben Tuikov
2010-04-21 15:09 ` Luben Tuikov
2010-04-21 16:09 ` Alan Stern
2010-04-21 16:18 ` Martin K. Petersen
2010-04-21 17:41 ` Sarah Sharp
2010-04-21 18:08 ` Alan Stern
2010-04-22 0:08 ` Luben Tuikov
2010-04-22 14:52 ` Alan Stern
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=4BCF0819.7090405@pobox.com \
--to=mlord@pobox.com \
--cc=Dinh.Nguyen@freescale.com \
--cc=James.Bottomley@suse.de \
--cc=david@fubar.dk \
--cc=dgilbert@interlog.com \
--cc=jschwertfeger@gmail.com \
--cc=kay.sievers@vrfy.org \
--cc=lennart@poettering.net \
--cc=linux-hotplug@vger.kernel.org \
--cc=linux-scsi@vger.kernel.org \
--cc=linux-usb@vger.kernel.org \
--cc=ltuikov@yahoo.com \
--cc=mdharm-usb@one-eyed-alien.net \
--cc=sarah.a.sharp@linux.intel.com \
--cc=sshtylyov@mvista.com \
--cc=stern@rowland.harvard.edu \
--cc=usb-storage@lists.one-eyed-alien.net \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for NNTP newsgroup(s).