linux-ext4 - Re: Ext4 on SSD Intel X25-M

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Date:	Thu, 12 Nov 2009 18:06:54 -0200
From:	"Renato S. Yamane" <yamane@...mondcut.com.br>
To:	linux-ext4@...r.kernel.org
CC:	Theodore Tso <tytso@....edu>, sandeen@...hat.com
Subject: Re: Ext4 on SSD Intel X25-M

On 12-11-2009 13:30, Theodore Tso wrote:
> On Thu, Nov 12, 2009 at 11:59:50AM -0200, Renato S. Yamane wrote:
>> [please, leave me on cc because I'm not subscribed on this ML]
>>
>> I'm using Intel SSD X25-M on my laptop, and I always hear that is not a
>> good idea use journal on SSD (it decrease the life time).
>>
>> I ask Intel about this, but I don't receive any answer.
>>
>> So, I would like to know if is possible disable Journal on EXT4.
>
> It is possible to create an ext4 file system without a journal.  It
> would mean that unclean shutdowns would require a full fsck, which on
> a freshly created file system on an SSD isn't _that_ bad.  Depending
> on how full/fragmented your filesystem happens to be, it will probably
> be under 10 seconds.
>
> That being said, though, it shouldn't be necessary to avoid using a
> journal on the Intel SSD.  Intel says that laptop will last at least 5
> years with 10GB worth of writes per day...

Woww! Thank you so much Theodore and Eric!
I will keep using journal on my SSD X25-M.

Regards,
Renato S. Yamane
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