linux-kernel - Re: Regular ext4 error warning with HD in USB dock

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Message-ID: <20101228143255.GI10149@thunk.org>
Date:	Tue, 28 Dec 2010 09:32:55 -0500
From:	Ted Ts'o <tytso@....edu>
To:	torn5 <torn5@...ftmail.org>
Cc:	Con Kolivas <kernel@...ivas.org>, linux-kernel@...r.kernel.org,
	adilger.kernel@...ger.ca, linux-ext4@...r.kernel.org,
	linux-usb@...r.kernel.org
Subject: Re: Regular ext4 error warning with HD in USB dock

On Tue, Dec 28, 2010 at 11:41:53AM +0100, torn5 wrote:
> 
> This is going to be a faq...
> I suppose the datetime is encoded (what format is that?) in that
> long number after "at".

Number of seconds since January 1st, 1970 midnight GMT.  (Standard
Unix-time format).  It's hard for the kernel to decode it since it
doesn't know what time-zone you are in, or what your local legislature
has done vis-a-vis arbitrary and cabritious adjustments to the
start/stop date of daylight savings time, etc.

It's easy enough to decode it using perl:

   perl -e '$t = localtime(1289053677); print "$t\n"'

> May I suggest the datetime gets decoded in the printing?
> Also may I suggest that the error happens immediately after mount
> and not after 300 seconds from mount?

Hmmm.... maybe.  The idea behind the 300 second delay was for the root
file system, to let e2fsck have a chance to fix the file system before
reporting the errors at mount time.

						- Ted

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