really strange ext4 behavior

Eric Sandeen sandeen at
Tue Feb 15 20:57:16 UTC 2011

On 2/15/11 11:50 AM, Ralf Ertzinger wrote:
> Moin.
> On Tue, 15 Feb 2011 10:07:18 -0600, Eric Sandeen wrote
>>> Why isn't it the Fedora default?
>>> Rahul
>> The simple answer is, usually, Fedora kernel doesn't fork
>> upstream.
> How is changing mount options for a file system "forking upstream"? 
> It's just a config file entry. And not even the kernel config file.

The defaults are in the kernel.

The only way to make barriers default for all ext3 filesystems is to change the default in the kernel.

Anaconda could insert "barrier=1" in fstab for the filesystems it creates, but that's not quite the same.

And anaconda gets tired of cleaning up other messes, there are too many to keep up with,
so really tries to stick with the agreed-upon defaults from the things it consumes.


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