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Message-ID: <bug-76261-13602-QSPXKkxUGj@https.bugzilla.kernel.org/>
Date:	Fri, 16 May 2014 03:52:50 +0000
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 76261] ext4_da_writepages err -30 after remount ro during
 shutdown

https://bugzilla.kernel.org/show_bug.cgi?id=76261

--- Comment #7 from Theodore Tso <tytso@....edu> ---
Look, if you're complaining about long shutdown times, you can do a forced
shutdown.  You will then lose data.  If you care about not losing data, then
you have to wait for all of the data to be written out to flash.  There's no
magic pixie dust here.  You can have a clean shutdown that might take a little
while, and no data loss, or you can live with the potential risk of data loss
if you can't stand waiting even a tiny bit of time for the shutdown to finish
up.

The other question is why is some user process writing so much to the file
system before the system is shutdown.  Is this really some ill-behaved user
application which is burning huge amounts of flash lifespan and battery life by
constantly writing to flash?   Or is there some other bug going on which is
causing system processes to write huge amounts of logs or other junk to the
file system unnecessarily?

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