Hi,

I just paid attention that utility 'dd' uses just 2 GB even I use greater
block size (BS). For example

=====
[root@pcfarm-10 ~]# dd if=/dev/zero of=/mnt/sdb/TestFile-S1 bs=12GB count=1
0+1 records in
0+1 records out
2147479552 bytes (2.1 GB) copied, 15.8235 seconds, 136 MB/s
============

BTW,

[root@pcfarm-10 ~]# uname -a
Linux pcfarm-10.pnpi.spb.ru 2.6.18-274.17.1.el5xen #1 SMP Tue Jan 10
16:41:16 EST 2012 x86_64 x86_64 x86_64 GNU/Linux
[root@pcfarm-10 ~]# cat /etc/issue
Scientific Linux SL release 5.7 (Boron)
Kernel \r on an \m




I decided to reinstall coreutils:

[root@pcfarm-10 ~]# yum reinstall coreutils.x86_64
Failed to set locale, defaulting to C
Loaded plugins: kernel-module
Setting up Reinstall Process
Resolving Dependencies
--> Running transaction check
---> Package coreutils.x86_64 0:5.97-34.el5 set to be updated
--> Finished Dependency Resolution
Beginning Kernel Module Plugin
Finished Kernel Module Plugin

Dependencies Resolved

===========================================================================================
 Package              Arch              Version                   Repository
         Size
===========================================================================================
Reinstalling:
 coreutils            x86_64            5.97-34.el5               sl-base  
         3.6 M

Transaction Summary
===========================================================================================
Remove        0 Package(s)
Reinstall     1 Package(s)
Downgrade     0 Package(s)

Total download size: 3.6 M
Is this ok [y/N]: y
Downloading Packages:
coreutils-5.97-34.el5.x86_64.rpm                                    | 3.6 MB
    00:05     
Running rpm_check_debug
Running Transaction Test
Finished Transaction Test
Transaction Test Succeeded
Running Transaction
  Installing     : coreutils                                               
           1/1 

Installed:
  coreutils.x86_64 0:5.97-34.el5                                           
               

Complete!
=========================

However after that I see


[root@pcfarm-10 ~]# ls -l /bin/dd
-rwxr-xr-x 1 root root 41464 Jul 26  2011 /bin/dd
[root@pcfarm-10 ~]# rpm -q --file /bin/dd
coreutils-5.97-34.el5


[root@pcfarm-10 ~]# rpm -qa | grep coreutils
policycoreutils-1.33.12-14.8.el5
policycoreutils-newrole-1.33.12-14.8.el5
coreutils-5.97-34.el5
policycoreutils-gui-1.33.12-14.8.el5


i.e. no package with name coreutils.x86_64

I failed to find anything on the topic in scientific linux mailing list.

Does somebody know about dd for 64 bit ?

Many thanks in advance,

Andrey