linux-kernel - RE: Race to power off harming SATA SSDs

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:   Mon, 8 May 2017 18:29:53 +0000
From:   Atlant Schmidt <aschmidt@...aresearch.com>
To:     Pavel Machek <pavel@....cz>,
        Boris Brezillon <boris.brezillon@...e-electrons.com>
CC:     Ricard Wanderlof <ricard.wanderlof@...s.com>,
        "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "linux-ide@...r.kernel.org" <linux-ide@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Hans de Goede <hdegoede@...hat.com>,
        "linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
        "Henrique de Moraes Holschuh" <hmh@....eng.br>,
        Tejun Heo <tj@...nel.org>,
        David Woodhouse <dwmw2@...radead.org>
Subject: RE: Race to power off harming SATA SSDs

> Well, you are right.. and I'm responsible.
>
> What I was trying to point out was that storage people try to treat SSDs as HDDs...
> and SSDs are very different. Harddrives mostly survive powerfails (with emergency
> parking), while it is very, very difficult to make SSD survive random powerfail,
> and we have to make sure we always powerdown SSDs "cleanly".

  It all depends on the class of SSD that we're discussing.
  "Enterprise class" SSDs will often use either ultracapacitors
  or batteries to allow them to successfully complete all of
  the necessary operations upon a power cut.

This e-mail and the information, including any attachments it contains, are intended to be a confidential communication only to the person or entity to whom it is addressed and may contain information that is privileged. If the reader of this message is not the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please immediately notify the sender and destroy the original message. Thank you. Please consider the environment before printing this email.