linux-ext4 - Re: [RFC] ext4: block reservation allocation

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Date:	Sun, 11 Mar 2012 13:32:34 -0400
From:	Phillip Susi <psusi@...ntu.com>
To:	Greg Freemyer <greg.freemyer@...il.com>
CC:	linux-ext4@...r.kernel.org
Subject: Re: [RFC] ext4: block reservation allocation

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 03/10/2012 07:26 PM, Greg Freemyer wrote:
>> I thought this could be done with the new defrag api.  I thought it had a
>> way to allocate a new donor file in a specific location so you could then
>> migrate the target file to those specific donor blocks.
>>
>>
> I'm not aware of that ability in the defrag api.
> 
> There are ohsm patches to do things along those lines, but they haven't
> been updated since 2.6.30 days as far as I know.

It seems this ability would be vital to e4defrag.  Without it, it would end up being no better than filesystem agnostic defragmenters like shake.  I'm almost certain there was some discussion in this direction a few years ago when e4defrag started being talked about, was it really not implemented?


-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/

iQEcBAEBAgAGBQJPXOGuAAoJEJrBOlT6nu75n5kIANngR3o+ZQ6vij+jJ7nj1/S1
nTmWUA70328xZD/Ht2G/ue3oTqOnQmxDIFOhM8AuUoZ0fHondSRXRFpPsXyUU7LO
uc/ZranjqGCAH7IP3FzduqvOcQSJS8Vo4CI9bjrH0fnB7uV+vYbB0mVkVh7X2AHi
T/1h0KIbtna8T7n1ISb3xqvKDY1zUM5qR9a7qo5fHkZpgLBDQNDxu1Q1qMEiytet
HPksKZcPPvkA8oOuHvika1zj2FiidWWcmPsv20P80BtTaRUBmAHbc3s3Wox3THWh
SP0tI0260LiMEyVVSpdsx76NoV9lFpu0ezNOtFHjFL99lnCV2K/fsHpTaICDBiA=
=E6n5
-----END PGP SIGNATURE-----
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html