Date: Fri, 20 Feb 2004 10:36:34 -0800 From: John-Mark Gurney <gurney_j@efn.org> To: Peter Jeremy <peterjeremy@optushome.com.au> Cc: Aaron Peterson <aaron@alpete.com> Subject: Re: bcwipe won't wipe a block device... Message-ID: <20040220183634.GK85686@funkthat.com> In-Reply-To: <20040220072331.GA7849@server.vk2pj.dyndns.org> References: <9615.162.114.211.143.1077213472.squirrel@mail.alpete.com> <20040219201520.GB44313@cicely12.cicely.de> <29352.162.114.211.143.1077222503.squirrel@mail.alpete.com> <20040219204012.GA33771@troutmask.apl.washington.edu> <46490.162.114.211.143.1077223809.squirrel@mail.alpete.com> <20040220072331.GA7849@server.vk2pj.dyndns.org>
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Peter Jeremy wrote this message on Fri, Feb 20, 2004 at 18:23 +1100: > On Thu, Feb 19, 2004 at 03:50:09PM -0500, Aaron Peterson wrote: > >The output was too long I though to post back to the list from > >ktrace/kdump... you can read it here: > > > >http://www.alpete.com/bcwipe.kdump.txt > > Summary: bcwipe is trying to read 1 byte from an offset of 2^N-1. > FreeBSD no longer has block devices (since 4.0) - /dev/da0 is a > character device. Character devices can only be read in blocksize > units (typically 512 bytes for disks). You need to fix bcwipe to > handle character devices. this can be done by using the fstat call on the device node.. it will provide both the proper block size (so it'll work w/ md swap backed devices that have a 4k block size) and device size... -- John-Mark Gurney Voice: +1 415 225 5579 "All that I will do, has been done, All that I have, has not."
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