Date: Thu, 4 Aug 2011 21:47:26 -0700 From: Jeremy Chadwick <freebsd@jdc.parodius.com> To: Steven Hartland <killing@multiplay.co.uk> Cc: freebsd-fs@FreeBSD.ORG Subject: Re: Questions about erasing an ssd to restore performance under FreeBSD Message-ID: <20110805044725.GA48395@icarus.home.lan> In-Reply-To: <20110805033001.GA47366@icarus.home.lan> References: <13BEC27B17D24D0CBF2E6A98FD3227F3@multiplay.co.uk> <20110728012437.GA23430@icarus.home.lan> <FD3A11BEFD064193AA24C1DF09EDD719@multiplay.co.uk> <20110728103234.GA33275@icarus.home.lan> <A6828B6CE6764E13A44B1ABF61CF3FED@multiplay.co.uk> <20110728145917.GA37805@icarus.home.lan> <2A07CD8AE6AE49A5BAED59A7E547D1F9@multiplay.co.uk> <2D117F9F212A4CCBA6B7F51E8705BDB7@multiplay.co.uk> <20110805033001.GA47366@icarus.home.lan>
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On Thu, Aug 04, 2011 at 08:30:01PM -0700, Jeremy Chadwick wrote: > I can put that patch up on the web, but be aware it's more of a "hack" > because /usr/include/sys/ata.h needs certain bits added to it, which I > just defined in camcontrol.c for the time being. There's also user > interface pieces which are half-written which I need to remove. I > wouldn't want people patching their camcontrol for this functionality > with a half-ass patch is what I'm saying. :-) I've cleaned up the patch (removed the half-written usage stuff) and made it available. http://jdc.parodius.com/freebsd/camcontrol_ata_security/ If this is committed to base the #define ATA_SECURITY_* entries should be moved into include/sys/ata.h. Steve, if you want to put up your patch somewhere I can review it, but an official review from someone more familiar with CAM (e.g. mav@) would be best. I'm also not sure how you implemented all the features, UI-wise (command-line-argument-wise). This is what I came up with, from my internal docs, with comparative syntax in Linux hdparm: NOTE: Should try to avoid using -C, -E, -n, -t, -u, or -v camcontrol security -U -p PWD == unlock (--security-unlock PWD) camcontrol security -S -p PWD == set password (--security-set-pass PWD) camcontrol security -D -p PWD == disable (--security-disable PWD) camcontrol security -X -p PWD == erase (--security-erase PWD) camcontrol security -Z -p PWD == enhanced erase (--security-erase-enhanced PWD) camcontrol security -i TYPE ... == {user,master} (--user-master USER) -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, US | | Making life hard for others since 1977. PGP 4BD6C0CB |
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