From: "Lev A. Melnikovsky" <melnikovsky@mail.ru>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: Artur Skawina <art.08.09@gmail.com>,
Linux Kernel <linux-kernel@vger.kernel.org>,
linux-usb@vger.kernel.org
Subject: Re: reading errors on JMicron JM20337 USB-SATA
Date: Mon, 3 Aug 2009 23:24:46 +0400 (MSD) [thread overview]
Message-ID: <alpine.LFD.2.00.0908032046010.31015@nev.ubzr> (raw)
In-Reply-To: <Pine.LNX.4.44L0.0908031021370.16132-100000@iolanthe.rowland.org>
On Mon, 3 Aug 2009 at 6:25pm, Alan Stern wrote:
AS> You are correct except for the term "indefinitely". The retries _will_
AS> stop if you wait long enough. Unfortunately, because of all the nested
AS> retry loops in the SCSI drivers and at the application level, you may
AS> have to wait as long as half an hour.
It was a simple test, I've plugged the USB cable off after two hours, this
is apparently not long enough:
[root ~]# time dd if=/dev/sdf of=/dev/null skip=61395120 count=1 bs=512
dd: reading `/dev/sdf': Input/output error
0+0 records in
0+0 records out
0 bytes (0 B) copied, 7550.12 s, 0.0 kB/s
dd: closing input file `/dev/sdf': Bad file descriptor
real 125m50.119s
user 0m0.000s
sys 0m0.000s
-L
next prev parent reply other threads:[~2009-08-03 19:25 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-01 22:23 Lev A. Melnikovsky
2009-08-02 14:03 ` Artur Skawina
2009-08-03 7:19 ` Lev A. Melnikovsky
2009-08-03 14:25 ` Alan Stern
2009-08-03 15:33 ` Artur Skawina
2009-08-03 15:45 ` Alan Stern
2009-08-03 19:24 ` Lev A. Melnikovsky [this message]
2009-08-03 19:52 ` Alan Stern
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