Date: Wed, 27 Oct 2010 16:29:02 +0300 From: Alexander Motin <mav@FreeBSD.org> To: Alexander Best <arundel@freebsd.org> Cc: Bruce Cran <bruce@cran.org.uk>, Tijl Coosemans <tijl@coosemans.org>, Oliver Fromme <olli@lurza.secnetix.de>, freebsd-hackers@freebsd.org, Garrett Cooper <gcooper@FreeBSD.org>, =?ISO-8859-15?Q?Dag-Erling_Sm=F8rgrav?= <des@des.no> Subject: Re: Summary: Re: Spin down HDD after disk sync or before power off Message-ID: <4CC8291E.1060002@FreeBSD.org> In-Reply-To: <20101027125453.GA8433@freebsd.org> References: <201009161742.24228.tijl@coosemans.org> <201009161619.o8GGJAmv035378@lurza.secnetix.de> <20101018155944.GA12425@freebsd.org> <868w1r92rf.fsf@ds4.des.no> <20101021122110.GA65490@freebsd.org> <86zku77mj6.fsf@ds4.des.no> <20101021135442.000054c9@unknown> <20101021134114.GB72290@freebsd.org> <20101027124113.GA6206@freebsd.org> <AANLkTi=hvkXvAkv68jjpJSKSKZ5a-0yn=Vje4ZjSPc=F@mail.gmail.com> <20101027125453.GA8433@freebsd.org>
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Alexander Best wrote: > On Wed Oct 27 10, Garrett Cooper wrote: >> Why not just be consistent with other interfaces and provide >> suffixes for the values to parse out integral times (i.e. 1 [second], >> 1m, 2h)? As long as the value is behavior is properly documented in >> the manpage (and potentially as examples in the usage message), that >> should be enough. > > that would increase usability, since users don't have to specify large values > in seconds, if they e.g. want the spindown to happen after 24 hours (24*60*60). Largest value that could be set more or less precisely for ATA disks is 5.5hours. Absolute maximum is 12 hours. So 24h interval is just inapplicable. > but this will not solve the real issue: specifying 'atacontrol spindown 1s' > WILL damage your hardware! imo users should be reminded about this even if this > is already mentioned in the manual. I would say "WILL" depends on hardware. And it's reasonability also depends on situation. -- Alexander Motin
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