Date: Thu, 7 Apr 2011 14:00:45 -0700 From: Garrett Cooper <yanegomi@gmail.com> To: Alexander Best <arundel@freebsd.org> Cc: svn-src-head@freebsd.org, Alexander Motin <mav@freebsd.org>, src-committers@freebsd.org, svn-src-all@freebsd.org Subject: Re: svn commit: r220412 - in head: share/man/man4 sys/cam/ata Message-ID: <BANLkTik7Pj5NiEM%2BNeu=neknTxshwcmk-g@mail.gmail.com> In-Reply-To: <20110407190318.GA97508@freebsd.org> References: <201104070817.p378HrHc033571@svn.freebsd.org> <20110407190318.GA97508@freebsd.org>
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On Thu, Apr 7, 2011 at 12:03 PM, Alexander Best <arundel@freebsd.org> wrote= : > On Thu Apr =A07 11, Alexander Motin wrote: >> Author: mav >> Date: Thu Apr =A07 08:17:53 2011 >> New Revision: 220412 >> URL: http://svn.freebsd.org/changeset/base/220412 >> >> Log: >> =A0 Make ada(4) driver to control device write cache, same as ata(4) doe= s. >> =A0 Add kern.cam.ada.write_cache sysctl/tunable to control it alike hw.a= ta.wc. > > how hard would it be to support per device sysctls/tunables? i'd really l= ike to > do: > > kern.cam.ada.0.write_cache=3D0 (root fs) > kern.cam.ada.1.write_cache=3D1 (/usr, /var, etc.) Does it really make sense to turn on write caching for one drive and not the other(s)? Thanks, -Garrett
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