Mailinglist Archive: opensuse (795 mails)

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Re: [opensuse] another WD Green AV-GP HD failure
  • From: "Carlos E. R." <robin.listas@xxxxxxxxxxxxxx>
  • Date: Wed, 1 Nov 2017 14:07:33 +0100 (CET)
  • Message-id: <alpine.LSU.2.21.1711011358010.12823@Telcontar.valinor>
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On Wednesday, 2017-11-01 at 02:50 -0400, Felix Miata wrote:

The DVDR froze trying to play a recording, so I shut it down, pulled the HD out,
and made an image of it thus:

ddrescue -d /dev/sdc dvdrfile.img dvdrfile.logfile

Rescued size while running was 10MB less than total size. Average rate was
49894kB/s. Errsize: 67072B. Errors: 81. Rescued: 320072MB. ipos/opos 314588MB.
Runtime: 106min.


If you try "dd_rhelp" instead you will see that it takes about the same time to copy, then (usually) try the bad areas for more time, perhaps hours, till you abort it. Just in the hope that it may work once. Probably a waste of time, just accept that you lost data and move on.

Excerpt from smartctl -x:
SMART Attributes Data Structure revision number: 16
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME FLAGS VALUE WORST THRESH FAIL RAW_VALUE

197 Current_Pending_Sector -O--CK 198 198 000 - 131

Well, that's the big issue.

You have at least 131 bad sectors, known to the disk firmware. If you find out their LBA you can zero them, which causes remapping with good spare records, and the disk would work again for some time.

You could try "badblocks" on it (a very slow operation) to find out the LBA. It may trigger the remapping on its own. Then you could copy that disk to a new disk of same size and insert the new one on the machine...


I would also google to see if someone has found a method to extract the recordings out of the machine.

Mine uses Linux, and people made alternative firmware that adds a web page that allows downloading of recordings to a computer. In any case, my disk is formatted ext2 and is external (typically FAT).


- -- Cheers,
Carlos E. R.
(from openSUSE 42.2 x86_64 "Malachite" at Telcontar)

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