From: Heinz Diehl <htd@fancy-poultry.org>
To: dm-crypt@saout.de
Subject: Re: [dm-crypt] Is erasing hard disk drive mandatory?
Date: Sat, 31 May 2014 10:32:28 +0200 [thread overview]
Message-ID: <20140531083228.GA3141@fancy-poultry.org> (raw)
In-Reply-To: <5388C67D.1060004@codehawks.eu>
On 30.05.2014, Thomas Bastiani wrote:
> > As far as I know, mkfs discards blocks while creating the filesystem.
> > So your device should be "overwritten" at that stage of the process?
> Oh cool. I had no idea. So then it would make the whole dd operation
> useless if you pass --allow-discards to cryptsetup.
I think so. At least mkfs.xfs, mkfs.ext4 and mkfs.btrfs are discarding blocks
while creating the fs. Don't know about other fs.
next prev parent reply other threads:[~2014-05-31 8:32 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-29 13:33 [dm-crypt] Is erasing hard disk drive mandatory? Kenny Lake
2014-05-29 20:13 ` Arno Wagner
2014-05-30 13:32 ` Stephen Cousins
2014-05-30 13:42 ` Arno Wagner
2014-05-30 13:52 ` Stephen Cousins
2014-05-30 15:07 ` Heinz Diehl
2014-05-30 15:17 ` Stephen Cousins
2014-05-30 15:58 ` Thomas Bastiani
2014-05-30 17:10 ` Heinz Diehl
2014-05-30 17:24 ` Thomas Bastiani
2014-05-30 17:47 ` Heinz Diehl
2014-05-30 17:57 ` Thomas Bastiani
2014-05-30 19:03 ` Laurence Darby
2014-05-30 19:25 ` Arno Wagner
2014-05-31 8:32 ` Heinz Diehl [this message]
2014-05-30 18:08 ` Arno Wagner
2014-05-30 10:02 ` Andrew
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