Re: How to force copy retries until finally copied all due to a dying old HDD in Linux?

From	Robert Nichols <SEE_SIGNATURE@localhost.localdomain.invalid>
Newsgroups	comp.os.linux.misc, comp.os.linux.help, comp.os.linux.setup, comp.os.linux.hardware
Subject	Re: How to force copy retries until finally copied all due to a dying old HDD in Linux?
Date	2015-01-13 08:39 -0600
Organization	Exiguous
Message-ID	<m93ani$vp6$1@omega-3a.local> (permalink)
References	(9 earlier) <m8tvte$679$1@omega-3a.local> <ZrGdnYsSWdAAIC_JnZ2dnUU7-QOdnZ2d@earthlink.com> <HeudndgXhPt6Iy_JnZ2dnUU7-V-dnZ2d@earthlink.com> <m8v7mi$ff4$1@omega-3a.local> <kcadnYBoDOVYIynJnZ2dnUU7-bGdnZ2d@earthlink.com>

Cross-posted to 4 groups.

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On 01/13/2015 12:44 AM, Ant wrote:
> Ah. Well, I ended up with a brand new 2 TB WD HDD (partitioned in half with EXT4 FS) and my hardware friend replaced the dying HDD in my PC. Dying HDD is my
> sdg(5 is the one I want to copy) and the new HDD partition I am making an image is in /media/Storage2b/CopiedDyingStorage and 1 TB better be enough. I hope
> I am doing this correctly for over a day so far:
>
> # time ddrescue /dev/sdg5 /media/Storage2b/CopiedDyingStorage ImageFileLog
>
> GNU ddrescue 1.16
> Press Ctrl-C to interrupt
> Initial status (read from logfile)
> rescued:     8641 MB,  errsize:  29099 MB,  errors:      42
> Current status
> rescued:     8641 MB,  errsize:  29099 MB,  current rate:        0 B/s
> rescued:     8718 MB,  errsize:  71006 MB,  current rate:    16384 B/s
>     ipos:    18350 kB,   errors:      56,    average rate:     1041 B/s
>     opos:    18350 kB,     time since last successful read:       0 s
> Splitting failed blocks...
>
> I saw "-rwxrwxrwx 1 root root 8.2G Jan 12 22:34 CopiedDyingStorage". It is still going.
>
> $ df
> Filesystem                                             1K-blocks Used Available Use% Mounted on
> rootfs                                                    960504 733704    178008  81% /
> udev                                                       10240  0     10240   0% /dev
> tmpfs                                                     206056 5936    200120   3% /run
> /dev/disk/by-uuid/242d81f2-8a0d-48e1-a144-22ab4d2b9407    960504 733704    178008  81% /
> tmpfs                                                       5120  8      5112   1% /run/lock
> tmpfs                                                    1193200 80   1193120   1% /run/shm
> /dev/sda9                                               50013916 2123204  45350120   5% /home
> /dev/sda5                                                 960504 24568    887144   3% /tmp
> /dev/sda8                                               49982172 6442520  41000644  14% /usr
> /dev/sda6                                                4804736 1801296   2759372  40% /var
> /dev/sdb2                                              961428808 23414852 889176120   3% /media/Storage2b
> /dev/sdb1                                              961428808 351230000 561360972  39% /media/Storage2a
>
> I am surprised the dying HDD still works ever since it went crazy. :P

I certainly hope it gets past the bad section and speeds up. At 16384 B/s
it's going to take about 55 days to finish.

Yes, 1TB is more than enough. You should need about 80GB.

-- 
Bob Nichols         AT comcast.net I am "RNichols42"

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