Re: [Bug-ddrescue] Question about "No space left on device" message

[Robert Trevellyan]

Disk /dev/sdg: 1.8 TiB, 2000398934016 bytes, 3907029168 sectors
Disk /dev/sdh: 1.8 TiB, 2000365289472 bytes, 3906963456 sectors

Your destination disk is smaller than your source disk.

Robert Trevellyan
www.trevellyan.biz
518 392 0846

On Sun, Nov 30, 2014 at 1:31 PM, Tom Williams <address@hidden> wrote:

> I'm using ddrescue 1.17 on Ubuntu 14.10 Linux (64-bit) to copy data from
> one external 2TB hard drive to another 2TB external hard drive.  Both
> drives are connected to my system via USB ports.   I let ddrescue run
> for 6 days before it finally stopped with the following message:
>
> ddrescue: write error: No space left on device
>
> Here is the command I issued:
>
> address@hidden:~$ sudo ddrescue -r3 /dev/sdg /dev/sdh
> ddrescue: Output file exists and is not a regular file.
> ddrescue: Use '--force' if you really want to overwrite it, but be
>           aware that all existing data in the output file will be lost.
> Try 'ddrescue --help' for more information.
> address@hidden:~$ sudo ddrescue -r3 /dev/sdg /dev/sdh --force
>
>
> GNU ddrescue 1.17
> Press Ctrl-C to interrupt
> rescued:     1646 GB,  errsize:    354 GB,  current rate:     720 kB/s
>    ipos:     2000 GB,   errors:    9726,    average rate:    4289 kB/s
>    opos:     2000 GB,    time since last successful read:       0 s
> Copying non-tried blocks...
> ddrescue: write error: No space left on device
> address@hidden:~$
>
> /dev/sdg is the original hard drive and /dev/sdh is the new, empty hard
> drive.   Both hard drives are 2TB in size:
>
> Disk /dev/sdg: 1.8 TiB, 2000398934016 bytes, 3907029168 sectors
> Units: sectors of 1 * 512 = 512 bytes
> Sector size (logical/physical): 512 bytes / 512 bytes
> I/O size (minimum/optimal): 512 bytes / 512 bytes
> Disklabel type: gpt
> Disk identifier: F2423982-AD62-4A91-9305-7E8444C65BDB
>
> Device      Start        End    Sectors  Size Type
> /dev/sdg1      40     409639     409600  200M EFI System
> /dev/sdg2  409640 3906766983 3906357344  1.8T Apple HFS/HFS+
>
> GPT PMBR size mismatch (3906963448 != 3906963455) will be corrected by
> w(rite).
>
> Disk /dev/sdh: 1.8 TiB, 2000365289472 bytes, 3906963456 sectors
> Units: sectors of 1 * 512 = 512 bytes
> Sector size (logical/physical): 512 bytes / 512 bytes
> I/O size (minimum/optimal): 512 bytes / 512 bytes
> Disklabel type: gpt
> Disk identifier: A58EACF6-DE44-43F8-9150-47FA3842849B
>
> Device      Start        End    Sectors  Size Type
> /dev/sdh1      40     409639     409600  200M EFI System
> /dev/sdh2  409640 3906701271 3906291632  1.8T Apple HFS/HFS+
>
> The new hard drive, /dev/sdh, is a Western Digital "My Passport for Mac"
> 2TB external hard drive.
>
> I did some web searches on the "write error: No space left on device"
> message I received and didn't find anything relating to what I'm
> experiencing. I did find some discussion about the logfile encountering
> a space issue, but I'm not using a logfile (no particular reason why I
> didn't).
>
>
> When I try to mount the new drive, it doesn't mount and I get these
> errors in dmesg output:
>
> [406070.521186] hfsplus: invalid secondary volume header
> [406070.521193] hfsplus: unable to find HFS+ superblock
> [406080.059713] hfsplus: invalid secondary volume header
> [406080.059719] hfsplus: unable to find HFS+ superblock
>
> Now, while ddrescue was running, periodically I would hear loud
> clicking, more like "clacking," sounds from the original hard drive.
> Apparently, the drive was dropped and the owner was concerned about
> losing photos.  That's why I suggested getting the data off the original
> hard drive NOW, while the data is still accessible.
>
> Any ideas why I received the "write error:  Np space left on device"
> message when both drives are the same size, 2TB?
>
> Thanks!
>
> Peace...
>
> Tom
>
> --
> /When we dance, you have a way with me,
> Stay with me... Sway with me.../
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