Date: Wed, 31 Aug 2011 13:26:27 -0500 (CDT) From: Robert Bonomi <bonomi@mail.r-bonomi.com> To: basarevych@gmail.com, freebsd-questions@freebsd.org Subject: Re: Is there way to get filename for specific LBA? Message-ID: <201108311826.p7VIQRCY068730@mail.r-bonomi.com> In-Reply-To: <CANmv3=xTS-Gsm9V6mshvG=kryWJ%2B8DYfP6GMG34eyT8=H9xDbw@mail.gmail.com>
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> From owner-freebsd-questions@freebsd.org Tue Aug 30 22:14:58 2011 > Date: Wed, 31 Aug 2011 06:11:24 +0300 > From: Ross <basarevych@gmail.com> > To: freebsd-questions@freebsd.org > Subject: Is there way to get filename for specific LBA? > > Aug 31 05:13:24 da kernel: ad6: WARNING - READ_DMA UDMA ICRC error > (retrying request) LBA=107491647 > # dd if=/dev/ad6 of=/dev/null bs=1m seek=107491647 count=1 > dd: /dev/null: Inappropriate ioctl for device > > Another question: why does it fail? *I* would call that a 'bug'. <wry grin> > > > # dd if=/dev/ad6 of=/var/tmp/xxxx bs=1m seek=107491647 count=1 > 1+0 records in > 1+0 records out > 1048576 bytes transferred in 0.026658 secs (39334650 bytes/sec) > > So no errors. I looked at bsdlabel a it's partition f, /home. But what > is the file name? There's *no* easy way to find out. You'll have to grovel through all the filesystem metadata, and the layers of index blocks for every file until you find the 'rgiht' one.
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