I'm performing a backup of some files in a raw image. It's a NTFS Windows data partition image used for a Windows 2003 VM in KVM.<br />
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After upgraded to CentOS 6.5, I noted that the backup was much slower.<br />
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In order to reproduce the problem, I made a test PC with CentOS 6.4 and CentOS 6.5 on the same machine and same disk (/dev/sda1 and /dev/sda3). Both are installed from DVD with no updates post-installation.<br />
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I then put a second SATA drive (/dev/sdb) which contains the NTFS raw image. This second drive is formatted in ext4.<br />
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Then, I perform a copy of somes files (~ 5 GB in this example) within the NTFS partition to the root ext4 partition of CentOS 6.4 and CentOS 6.5. See "Steps To Reproduce".<br />
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The copy in CentOS 6.4 take 1min19 (real), 10 sec (sys)<br />
And second try after reboot confirm these numbers.<br />
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The copy in CentOS 6.5 take 2min14 (real), 10 sec (sys) for a first try<br />
The copy in CentOS 6.5 take 3min03 (real), 10 sec (sys) for a second try (reboot have been done between the tests)
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