Re: [Bug-ddrescue] Need help - ddrescue very slow - avg 27kb/s

[me]

Hi Andrew,

Thanks for replying. I was initially recovering to an NTFS filesystem. The
average rate never went higher than 27kb. I've read that writing a large
file to NTFS filesystem can get progressively slower. Therefore, I
formated my recovery harddisk to ext3. However, there was no improvement -
the average rate is still 27kb and the current rate never go beyond 30kb.

For the recovery harddisk, I had formatted it following the instructions
at
http://www.idevelopment.info/data/Unix/Linux/LINUX_PartitioningandFormattingSecondHardDrive_ext3.shtml

Result of mount of the recovery harddisk:
/dev/sde1 on /media/sde1 type ext3
(rw,nosuid,nodev,relatime,errors=continue,data=writeback)

regards,
Ridz


> Hi Ridz.
>
> What do you mean by "I've formatted it to type 83".
>
> Did you just change the partition type or did you actually format the
> filesystem?  I ask because writing a large file to an NTFS filesystem can
> get progressively slower.  If you just changed the partition type, that
> will have no effect on the filesystem at all.
>
> In another terminal, type
> mount
>
> and post the output.  That will show what devices are moutned and what
> filesystem is in use.
>
> Regards,
>
> Andrew Zajac
>
>
>
> --- On Sat, 1/8/11, address@hidden <address@hidden> wrote:
>
> From: address@hidden <address@hidden>
> Subject: [Bug-ddrescue] Need help - ddrescue very slow - avg 27kb/s
> To: address@hidden
> Received: Saturday, January 8, 2011, 9:59 PM
>
> Hi,
>
> Need help. I've ran ddrescue for a few days and it only rescued 10G out of
> 500GB. I've tried various command of ddresue but I find the average rate
> to be very slow as compared to other examples that I've read in the
> archives. I've installed ddrescue 1.8 and 1.13. I'm new to Linux and I'm
> not sure which version I'm using now. I've also formated my recovery
> harddisk to ext3 in hope that the speed would increase. But unfortunately
> it didn't.
>
> My hard disks configs are as follows:
>
> Problem drive : /dev/sdc  500GB NTFS - Windows detected it as unallocated
> Recovery drive: /media/sde1  1TB ext3 - I've formatted it to type 83
>
> Command:
>
> ./ddrescue --no-split --cluster-size=1024 /dev/sdc /media/sde1/rescue.img
> /media/sde1/rescue.log
>
> Current status:
> rescued:   226559 kB,  errsize:       0 B,  current rate:    27594 B/s
> ipos:   226559 kB,   errors:       0,    average rate:    27431 B/s
> opos:   226559 kB,     time from last successful read:       0 s
>
> Is there anyway for me to speed up the process.
> Please help. Thanks.
>
> regards,
> Ridz
>
>
>
>
>
>
>
>
>
> _______________________________________________
> Bug-ddrescue mailing list
> address@hidden
> http://lists.gnu.org/mailman/listinfo/bug-ddrescue
>
>
>