linux-ext4 - Re: mke2fs options for large media archive filesystem

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

Date:	Sun, 02 Feb 2014 20:35:26 +0400
From:	"Vitaliy Filippov" <vitalif@...rcmc.ru>
To:	linux-ext4@...r.kernel.org,
	"Bastien Traverse" <bastien.traverse@...il.com>
Subject: Re: mke2fs options for large media archive filesystem

Hi,

> b) bigalloc feature

As I understand (please correct me someone if I'm wrong), given that ext4  
uses extents, bigalloc feature is really useful ONLY for minimizing block  
bitmaps. Which is probably only useful for (maybe) reducing kernel memory  
usage and for (maybe) reducing fragmentation. 'maybe' means I personally  
don't know if benefit will be large enough, and I even don't know if there  
would be any real benefit at all... I didn't see any real bigalloc tests  
in the web...

So, I personally don't think you'll really benefit from bigalloc on a 1TB  
archive partition... But I would like it very much if someone can tell an  
authoritative verdict. :)

-- 
With best regards,
   Vitaliy Filippov
--
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