[Bug-ddrescue] ddrescue 1.15 - ddrescue: write error: File too large

[James Wilson]

Hi,

I'm using and RPM of ddrescue obtained from:

http://www.cert.org/forensics/tools/centos/cert/6.2/x86_64/ddrescue-1.15-1.el6.x86_64.rpm
http://pkgs.repoforge.org/ddrescue/ddrescue-1.15-1.el6.rf.x86_64.rpm

This is on CentOS 6.2, 2.6.32-220.7.1.el6.x86_64

I have a 3TB Western Digital SATA drive, directly connected, recovering to an 
image.  The image is being written to a 8.2TB ext4 partition.  The disk is from 
a WD USB enclosure, that is also failing, hence the direct connection.  The WD 
enclosures encrypt the disk by default, hence the raw recovery.  On reaching a 
recovery image size of 2TB, ddrescue fails:

# ddrescue -B -v -n -T --block-size=4KiB /dev/sda ./sda.dd 
./ddrescue_logfile_LOCAL.log

GNU ddrescue 1.15
About to copy 2793 GiBytes from /dev/sda to ./sda.dd
    Starting positions: infile = 0 B,  outfile = 0 B
    Copy block size: 16 sectors
Sector size: 4096 Bytes
Max retries: 0    
Direct: no    Sparse: no    Split: no    Truncate: no

Press Ctrl-C to interrupt
Initial status (read from logfile)
rescued:    1688 GiB,  errsize: 69052 KiB,  errors:   17263
Current status
rescued:    1688 GiB,  errsize: 69052 KiB,  current rate:        0 B/s
   ipos:    2047 GiB,   errors:   17263,    average rate:        0 B/s
   opos:    2047 GiB,     time from last successful read:       1 s
Copying non-tried blocks...
ddrescue: write error: File too large

The ext4 filesystem has the "large_file" option enabled.  The actual size of 
the image on failure:

1.7T -rw-r--r--  1 root  root  2.0T Apr  2 12:37 sda.dd

-rw-r--r-- 1 root root 2199023251456 Apr  2 12:37 sda.dd

Is this a limitation of ddrescue? Any assistance would be appreciated.

Kind regards,

James