linux-ext4 - Re: tune2fs -I seems dangerous

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Date:	Thu, 04 Dec 2008 18:14:36 -0500
From:	Jonathan Bastien-Filiatrault <joe@....org>
To:	Eric Sandeen <sandeen@...hat.com>
CC:	ext4 development <linux-ext4@...r.kernel.org>
Subject: Re: tune2fs -I seems dangerous

Eric Sandeen wrote:
> As a small experiment...
> [snip]
> ... this yields 10031 lines of fsck output, and results in about 38% of
> the files that were on the filesystem going missing.
I have had a similar experience converting from 128 to 256 bytes inodes.
After a while, tune2fs -I would simply stop doing IO and using a lot of
CPU with a few IO bursts every half-hour or so. This is on a recent/fast
x86-64 computer. I had to cancel the thing after leaving it running for
over 24 hours.
> 
> I don't have the strong sense that tune2fs -I has been shaken out at
> all; should it be shipping as a useable option?
Maybe add a --accept-consequences-of-shooting-myself-in-the-foot flag ?

Cheers,
Jonathan
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