Date: Wed, 08 Nov 2006 07:20:23 -0600 From: Derek Ragona <derek@computinginnovations.com> To: Olivier Nicole <on@cs.ait.ac.th>, illoai@gmail.com Cc: freebsd-questions@freebsd.org Subject: Re: Reading crashed SCSI disk Message-ID: <6.0.0.22.2.20061108071925.024c80f0@mail.computinginnovations.com> In-Reply-To: <200611080524.kA85OKN2068574@banyan.cs.ait.ac.th> References: <200611060153.kA61rLNt026020@banyan.cs.ait.ac.th> <d7195cff0611070911u2dbae581w4090cf3b78875405@mail.gmail.com> <200611080524.kA85OKN2068574@banyan.cs.ait.ac.th>
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If the drive has a physical failure in the mechanism or media, you may need
to send it off to ontrack and have them try to recover the data.
-Derek
At 11:24 PM 11/7/2006, Olivier Nicole wrote:
> > > I am wondering if there is a way to read the physical blocks (those
> > > that are readable) and save the data, from that I could be able to
> > > rebuild some of the mailboxes.
> >
> > dd if=/scsi_drive of=/some/file/name
> >
> > Should read anything readable, though without bs=xxx it may be
> > quite slow. You can usually then mount the file via mdconfig(8).
> > If the partition table is intact you can specify that instead of the
> > whole disk. This can make the fiddly bit with trying to figure out
> > exactly what part will mount under md(4).
>
>I tried
>
>dd if=/dev/da0s1 of=/somefile
>
>dd stopped after a short while with I/O error, after a number of SCSI
>reading errors.
>
>best regards,
>
>Olivier
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