From: Florian Weimer <fweimer@bfk.de>
To: Lukas Czerner <lczerner@redhat.com>
Cc: Ric Wheeler <ricwheeler@gmail.com>,
Andreas Dilger <adilger@whamcloud.com>,
"H. Peter Anvin" <hpa@zytor.com>,
linux-ext4@vger.kernel.org
Subject: Re: Feature request: e2fsck -z
Date: Wed, 10 Aug 2011 11:04:42 +0000 [thread overview]
Message-ID: <82fwl9a5o5.fsf@mid.bfk.de> (raw)
In-Reply-To: <alpine.LFD.2.00.1108101259330.4380@dhcp-27-109.brq.redhat.com> (Lukas Czerner's message of "Wed, 10 Aug 2011 13:01:10 +0200 (CEST)")
* Lukas Czerner:
> On Wed, 10 Aug 2011, Florian Weimer wrote:
>
>> * Lukas Czerner:
>>
>> > You're right. It is a part of e2fsck and you can enable it with -E
>> > discard.
>>
>> If the block device does not support TRIM, does this result in zeros
>> being written instead?
> Of course not, discard works only on devices which does support it. If
> the device does not support discard it will to nothing.
Oh, then it doesn't address hpa's use case (improving compression).
--
Florian Weimer <fweimer@bfk.de>
BFK edv-consulting GmbH http://www.bfk.de/
Kriegsstraße 100 tel: +49-721-96201-1
D-76133 Karlsruhe fax: +49-721-96201-99
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next prev parent reply other threads:[~2011-08-10 11:04 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-09 17:52 Feature request: e2fsck -z H. Peter Anvin
2011-08-10 6:34 ` Ric Wheeler
2011-08-10 8:16 ` Andreas Dilger
2011-08-10 8:22 ` Ric Wheeler
2011-08-10 9:35 ` Lukas Czerner
2011-08-10 10:55 ` Florian Weimer
2011-08-10 11:01 ` Lukas Czerner
2011-08-10 11:04 ` Florian Weimer [this message]
2011-08-10 11:06 ` Ric Wheeler
2011-08-10 11:09 ` Lukas Czerner
2011-08-10 13:25 ` Ted Ts'o
2011-08-10 14:34 ` Lukas Czerner
2011-08-10 7:54 ` Ron Yorston
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