Date: Wed, 8 Nov 2006 12:24:20 +0700 (ICT) From: Olivier Nicole <on@cs.ait.ac.th> To: illoai@gmail.com Cc: freebsd-questions@freebsd.org Subject: Re: Reading crashed SCSI disk Message-ID: <200611080524.kA85OKN2068574@banyan.cs.ait.ac.th> In-Reply-To: <d7195cff0611070911u2dbae581w4090cf3b78875405@mail.gmail.com> (illoai@gmail.com) References: <200611060153.kA61rLNt026020@banyan.cs.ait.ac.th> <d7195cff0611070911u2dbae581w4090cf3b78875405@mail.gmail.com>
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> > 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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