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Old 11-03-2006, 03:25 AM   #1
debeus
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File size limit exceeded


I'm trying to back up a hard drive to a larger external hard drive using the command

dd if=/dev/hda of=/mnt/backup.img

This is a computer that runs windows, so I'm booting from the Slackware CD, and I get the message "File size limit exceeded" when the target reaches 2GB. I could do it in small chunks but then I would be unable to mount it using -o loop. The target drive is reiserfs, and I've tried ulimit -f unlimited, without it working.
 
Old 11-03-2006, 04:47 AM   #2
duryodhan
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Is the target Partition VFAT?
 
Old 11-06-2006, 11:50 PM   #3
debeus
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Quote:
Originally Posted by duryodhan
Is the target Partition VFAT?
nope, reiser
 
Old 11-07-2006, 07:10 AM   #4
onebuck
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Quote:
Originally Posted by debeus
I'm trying to back up a hard drive to a larger external hard drive using the command

dd if=/dev/hda of=/mnt/backup.img

This is a computer that runs windows, so I'm booting from the Slackware CD, and I get the message "File size limit exceeded" when the target reaches 2GB. I could do it in small chunks but then I would be unable to mount it using -o loop. The target drive is reiserfs, and I've tried ulimit -f unlimited, without it working.
Hi,

What about space on '/mnt/backup.img'?

You should look at this link by AwesomeMachine.
He has composed a great howto for the dd command on LQ.
I've not had a file error for a bitstream copy for a smaller partition to a larger using;

Code:
dd if=/dev/hda1 of=/dev/hda2 bs=4096 conv=notrunc,noerror
Change the device '/dev/hda#' to your devices. You could use the blocks from 'fdisk -l' to create your 'dd seek' command options to prevent the larger partition problem.
 
Old 11-07-2006, 10:36 AM   #5
gbonvehi
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Maybe you're using a old reiser filesystem, you should try with -o conv option, but read the warning first: http://www.namesys.com/mount-options.html

Two informative links:
http://linuxmafia.com/faq/VALinux-kb...ize-limit.html
http://www.suse.de/~aj/linux_lfs.html

Last edited by gbonvehi; 11-07-2006 at 10:39 AM. Reason: Added links.
 
  


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