Date: Sat, 6 Apr 2024 01:47:56 -0700 From: Doug Hardie <bc979@lafn.org> To: Matthias Apitz <guru@unixarea.de> Cc: freebsd-questions@freebsd.org Subject: Re: understanding the output of: gpart list da0 Message-ID: <0FF9EEDD-93F0-4963-8586-2D3395B5E96A@sermon-archive.info> In-Reply-To: <ZhDxHle8gRlBbipL@c720-1400094> References: <ZhDxHle8gRlBbipL@c720-1400094>
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> On Apr 5, 2024, at 23:52, Matthias Apitz <guru@unixarea.de> wrote: > > > Hello, > > I have here the output (a bit shorted and with added calculations) > of 'gpart list da0': > > 1. Name: da0p1 > Mediasize: 524288 (512K) 512K = 512*1024 = 524288 = length > index: 1 > start: 1953523712 > end: 1953524735 > length: 524288 > > 2. Name: da0p2 > Mediasize: 274877906944 (256G) 256G = 256*1024*1024*1024 = 274877906944 = length > index: 2 > start: 2048 > end: 536872959 > length: 274877906944 > > 3. Name: da0p3 > Mediasize: 41943040 (40M) 40M = 40*1024*1024 = 41943040 = length > index: 3 > start: 536872960 > end: 536954879 > length: 41943040 > > 4. Name: da0p4 > Mediasize: 723177701376 (674G) 674G = 674*1024*1024*1024 = 723701989376 != length > index: 4 > start: 541067264 > end: 1953523711 > length: 723177701376 > > > What I do not understand is: > > 1) Why differs the 'length' of da0p4 from the real value for 674G? 723177701376 / 1024 / 1024 / 1024 = 673.51171875 which rounds up to 674 G. > 2) All the values for 'start', 'end' and 'length' does not make any > sense to me. (end - start + 1) *512 = length > > Can someone enlighten me a bit. -- Doughelp
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