linux-ext4 - Re: resize2fs hang at read function

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Date:   Wed, 7 Mar 2018 08:47:34 +0100
From:   Lukas Czerner <lczerner@...hat.com>
To:     "Theodore Y. Ts'o" <tytso@....edu>
Cc:     rong zhao <zhaorbox@...il.com>, linux-ext4@...r.kernel.org,
        linux-fsdevel@...r.kernel.org
Subject: Re: resize2fs hang at read function

On Wed, Mar 07, 2018 at 12:08:46AM -0500, Theodore Y. Ts'o wrote:
> On Wed, Mar 07, 2018 at 11:01:40AM +0800, rong zhao wrote:
> > 
> > I downloaded the latest e2fsprogs source code from kernel.org, it works.
> 
> I'm not sure what the difference is, but I'm *shocked* that RHEL 7.4
> is still using e2fsprogs 1.42.x.  There are a very large number of
> resize2fs bugs, especially with very large file systems, with
> e2fsprogs 1.42.x.  Especially in the case of off-line resizes with a
> lage ext4 file system, with a resize2fs from e2fsprogs 1.42.x, data
> corruption is almost a certainty.

The version number (as with kernel) does not really say much. We
backport a lot of stuff.

Regards,
-Lukas

> 
> If you have used resize2fs 1.42.x on that file system, I would suggest
> running e2fsck on your large ext4 file system unmounted when you have
> a chance, to make sure it's in a good and healthy state.
> 
> Regards,
> 
> 					- Ted