linux-kernel - Re: [PATCH] scsi/sd: Fix capacity output to show MB/GB/TB/...

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Message-Id: <200808311625.15655.ioe-lkml@rameria.de>
Date:	Sun, 31 Aug 2008 16:25:14 +0200
From:	Ingo Oeser <ioe-lkml@...eria.de>
To:	Matthew Wilcox <matthew@....cx>
Cc:	James Bottomley <James.Bottomley@...senpartnership.com>,
	Simon Arlott <simon@...e.lp0.eu>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"linux-scsi" <linux-scsi@...r.kernel.org>
Subject: Re: [PATCH] scsi/sd: Fix capacity output to show MB/GB/TB/...

Hi Matthew,

On Sunday 31 August 2008, Matthew Wilcox wrote:
> BTW, I do appreciate Simon's point about df showing a different number.
> How about we print:
> 
> sd 7:0:0:0: [sdc] 1099511627776 512-byte hardware sectors (563TB / 512TiB)
> 
> (or perhaps a more realistic number ...)
> 
> sd 7:0:0:0: [sdc] 976562500000 512-byte hardware sectors (500TB / 455TiB)
> 
> It's perhaps a more gentle way of informing our users that they may not
> have quite as much capacity as they thought they had.

Great idea! As a user/admin I would find this the best one of all.

1. All variants given.
2. Correct scientific units used.

I would ACK that one, if you provide a small helper for that printout
somehwere in block/{genhd,blk-core}.c


Best Regards

Ingo Oeser
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