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From: Oliver Neukum <>
Subject: Re: USB misbehavior causes system hang
Date: Tue, 27 Feb 2007 15:15:58 +0100	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

Am Dienstag, 27. Februar 2007 15:06 schrieb Eric Buddington:

Exactly this portion of the log would hold the reason for the reset.
> usb 1-6.2: reset high speed USB device using ehci_hcd and address 36
> usb 1-6.2: device descriptor read/64, error -110
> usb 1-6.2: device descriptor read/64, error -110
> end_request: I/O error, dev sda, sector 919931828
> sd 1:0:0:0: rejecting I/O to offline device
> sd 1:0:0:0: rejecting I/O to offline device
> sd 1:0:0:0: rejecting I/O to offline device

By that point USB is no longer involved. These requests error out
in the SCSI layer.

> My softdog script loops 'date >/tmp/$logfile;echo 1 > /dev/watchdog; sleep
> 30'. Nothing in it accesses the USB disk. /tmp is tmpfs.

If you've written to the USB disk a lot, you are likely to cause writes
to it as soon as you are under memory pressure.
> Should the USB failure cause this problem?



  reply	other threads:[~2007-02-27 14:17 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-02-27 14:06 Eric Buddington
2007-02-27 14:15 ` Oliver Neukum [this message]
2007-02-27 21:49 ` Pete Zaitcev
2007-03-01 13:39   ` Eric Buddington
2007-03-05 10:17 ` Andrew Morton
2007-03-05 16:55   ` Eric Buddington

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