linux-ext4 - Can anyone kindly tell me disadvantage of data=writeback if I save file length myself

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]

Message-ID: <CAM3LPOYJXNtCqtbTyfwDAZT25MsmNU7Hrxv=tk-ybdwuVBVJzQ@mail.gmail.com>
Date:	Thu, 12 Feb 2015 10:14:15 +0800
From:	Shiquan Yang <shiquany@...il.com>
To:	linux-ext4@...r.kernel.org
Subject: Can anyone kindly tell me disadvantage of data=writeback if I save
 file length myself

hi,

I have a case,
1. SATA disk + buffered write
2. one node with N disks, and the first disk is meta disk, and the left 1.N
is data disk
3. I will write data in disk 1-N, and record the chunk file length in meta
disk (disk0).

in such case, can I safely set data=writeback without any possible problem,
maybe include data corrupt, slow recovery when node restart, ... ?

thanks very much.
-- 
Raymond
Attitude is Everything.
--
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