linux-kernel - Re: Power plug off / on - EXT4-fs (sda1): re-mounted. Opts: errors=remount-ro,commit=600

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Message-Id: <B48664E0-16B7-49A5-AE50-1C3DA751DC2C@mit.edu>
Date:	Wed, 12 Jan 2011 19:09:51 -0500
From:	Theodore Tso <tytso@....EDU>
To:	"Luis R. Rodriguez" <mcgrof@...il.com>
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: Power plug off / on - EXT4-fs (sda1): re-mounted. Opts: errors=remount-ro,commit=600

On Jan 12, 2011, at 4:35 PM, Luis R. Rodriguez wrote:

> When I yank my power chord off of my Thinkpad T61 running 2.6.37 I get
> the following:
> 
> [   79.523778] Monitor-Mwait will be used to enter C-3 state
> [   81.195402] EXT4-fs (sda1): re-mounted. Opts: errors=remount-ro,commit=600
> 
> mcgrof@tux ~ $ mount| grep sda1
> /dev/sda1 on / type ext4 (rw,errors=remount-ro,commit=600)

Sounds like you have some userspace script which is being triggered on the transition running on batteries, and it's doing a remount -o commit=600 to save power.   Are you using laptop_mode by any chance?

-- Ted

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