DD-ing from device to device.

[Rogier Wolff]

Hi,

I should NOT get a "file too large" error when copying from a device
to a device, right?

I should NOT get a "file too large" if the files are openeed using
the "O_LARGEFILE" option, right?

Well: 

execve("/bin/dd", ["dd", "if=/dev/hda", "of=/dev/hdc", "bs=1024k", "count=10"], [/* 46 vars */]) = 0
[... libs and stuff ... ]
open("/dev/hda", O_RDONLY|O_LARGEFILE)  = 4
open("/dev/hdc", O_RDWR|O_CREAT|O_TRUNC|O_LARGEFILE, 0666) = 5
[....signals and stuff. ]
read(4, ""..., 1048576) = 1048576
write(5, ""..., 1048576) = 1048576
read(4, ""..., 1048576) = 1048576
write(5, ""..., 1048576) = 1048576
read(4, ""..., 1048576) = 1048576
write(5, ""..., 1048576) = 1048576
read(4, ""..., 1048576) = 1048576
write(5, ""..., 1048576) = 1048576
read(4, ""..., 1048576) = 1048576
write(5, ""..., 1048576) = 1048576
read(4, ""..., 1048576) = 1048576
write(5, ""..., 1048576) = 1048576
read(4, ""..., 1048576) = 1048576
write(5, ""..., 1048576) = 1048576
read(4, ""..., 1048576) = 1048576
write(5, ""..., 1048576) = 1048576
read(4, ""..., 1048576) = 1048576
write(5, ""..., 1048576) = 1048576
read(4, ""..., 1048576) = 1048576
write(5, ""..., 1048576) = 1048576
munmap(0x400fb000, 1052672)             = 0
write(2, "10+0 records in\n", 16)       = 16
write(2, "10+0 records out\n", 17)      = 17
close(4)                                = 0
close(5)                                = 0
_exit(0)                                = ?

But without the "count=10" I get: 

read(4, ""..., 1048576) = 1048576
write(5, ""..., 1048576) = 1048576
read(4, ""..., 1048576) = 1048576
write(5, ""..., 1048576) = 1048575
write(5, ".", 1)                     = -1 EFBIG (File too large)

This is on 2.2.14. I Could swear we made a working copy of a disk 30
minutes earlier....

	Roger. 

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