id	summary	reporter	owner	description	type	status	component	version	resolution	keywords	cc	guest	host
8773	4.0.4 and 4.0.6 IO Subsystem errors => Fixed in SVN	wireless01		"There is a bug in IO subsystem of the 4.0.4 and 4.0.6 VBox, which is quite easy to reproduce.
To reproduce it it is enough to copy the file into the guest OS (using, for example NFS as a medium, but You can try different media as well) and compute its checksum (using cksum utility).
Such copy of the file generates quite different checksum, than original file.
I have tested it on different Host/Guest OSes combination, so I think, that the bug is generic
Here are examples :
Host : Windows 7 64 bits, SP1 (guests : Oracle Linux 5.6, 64 bits, Solaris 10u9 64 bits)
Host : Oracle Linux 5.6, 64 bits, (guests : Oracle Linux 5.6, 64 bits, Solaris 10u9 64 bits)
Host : Solaris 10u9, 64 bits, (guests : Oracle Linux 5.6, 64 bits, Solaris 10u9 64 bits)
The bug is able to reproduce on at least some larger files (around 1GB)
Versions affected are (at least : 4.0.4 and 4.0.6)
I have reproduced it with option ""Used host IO cache"" both - enabled, and disabled - results are the same.
I am choosing ""Solaris"" as a host and guest, but - as I have written - the bug seems to be generic, as I have tested it on more Host/Guest combinations than this one.
However - I haven't tested it on any 32-bit platform.
"	defect	closed	other	VirtualBox 4.0.6	fixed			Solaris	Solaris