From: JG <jg@cms.ac>
To: dm-crypt@saout.de
Subject: Re: [dm-crypt] LUKS - SSD trim
Date: Fri, 14 May 2010 09:35:35 +0200 [thread overview]
Message-ID: <20100514093535.016ccf76@aero.local> (raw)
In-Reply-To: <20100422004842.5eb40c0a@gmail.com>
hi,
you can try the modified version of the wiper.sh script (originally by
mark lord but the new patches have not been commented by him so take
care and do what the poster says => backup :)) for trimming a dmcrypt
partition.
i just tested it and so far i found no problems or changes in
comparison to my backup regarding trim.
https://sourceforge.net/tracker/index.php?func=detail&aid=2997551&group_id=136732&atid=736684
--------
one question regarding alignment whether the following is correct. i
used the latest tools which should do this automatically:
fdisk (util-linux-ng 2.17.2) + cryptsetup 1.1.1-rc2, created with some
2.6.33.x kernel (don't know for sure anymore, i'm now running 2.6.33.4).
# fdisk -luc /dev/sda
Disk /dev/sda: 100.0 GB, 100030242816 bytes
255 heads, 63 sectors/track, 12161 cylinders, total 195371568 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xe2d5b28c
Device Boot Start End Blocks Id System
/dev/sda1 2048 145407 71680 83 Linux
/dev/sda2 145408 4339711 2097152 82 Linux swap
/dev/sda3 4339712 195371567 95515928 5 Extended
/dev/sda5 4341760 98713599 47185920 83 Linux
/dev/sda6 98715648 193087487 47185920 83 Linux
/dev/sda5 e.g. is a cryptsetup/luks partition:
# cryptsetup luksDump /dev/sda5 | grep Payload
Payload offset: 4040
JG
next prev parent reply other threads:[~2010-05-14 7:35 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-21 22:48 [dm-crypt] LUKS - SSD trim Felix Blanke
2010-04-21 23:00 ` Milan Broz
2010-04-21 23:03 ` Felix Blanke
2010-04-22 2:17 ` Arno Wagner
2010-04-22 8:42 ` mark
2010-04-22 9:37 ` Milan Broz
2010-04-22 20:12 ` Felix Blanke
2010-04-22 22:20 ` Richard Zidlicky
2010-04-22 22:22 ` Richard Zidlicky
2010-04-23 8:49 ` Milan Broz
2010-04-23 10:20 ` Mikko Rauhala
2010-04-23 11:13 ` Richard Zidlicky
2010-04-23 11:46 ` Milan Broz
2010-04-23 20:09 ` Richard Zidlicky
2010-04-23 20:45 ` Milan Broz
2010-04-23 22:59 ` Richard Zidlicky
2010-04-24 15:59 ` Arno Wagner
2010-04-24 16:44 ` Richard Zidlicky
2010-04-24 17:01 ` Arno Wagner
2010-04-22 6:17 ` Heinz Diehl
2010-05-14 7:35 ` JG [this message]
-- strict thread matches above, loose matches on Subject: below --
2010-05-27 13:14 Christoph Anton Mitterer
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