id	summary	reporter	owner	description	type	status	component	version	resolution	keywords	cc	guest	host
7271	Storage systems disconnecting randomly.	daniel		"HOST:

Server installation of VirtualBox PUEL on SunFire x2270

CPU: Intel Xeon E5504, 2.00GHz (64bit)
Storage: 2 SATA disks, RAID1 (root partition); 3 SATA disks, RAID5 (data partition)
OS: CentOS 5.5

GUEST

Various 64bit linux distributions - CentOS 5.5 (just the same image as host), Fedora 13, Arch Linux.

CPU: added one or two cores, IO/APIC enabled, EFI disabled, PEA/NX disabled, VT-x enabled, Nested Paging enabled 

RAM: 2048MB

Storage: SATA controller (AHCI), standard 150GB *.vdi on xfs physical filesystem., host IO caching disabled, dm_crypt/luks encrypted /home partitionm ext3 filesystem

Network: bridged Pc-NET III fast

Linux guest is accessed through the VRDP connection.

BUG: 

After accessing the destkop, system is randomly freezing. Networking still works, I can ping the machine, but SSH won't give me shell after logon. 
I can click on some running apps (probably cached in RAM) but I am not able to work with them. 
It seems like the VDI disk was completely disconnected from virtual machine.

I did few tests.

=> disabled dm_crypt/luks encryption
=> changed standard vdi disks from xfs physical filesystem to logical volumes with RAW vmdk abstraction
=> changed host OS from CentOS to Arch Linux
=> changed virtualbox from centos rmp package
=> changed virtualbox ""all distribution"" binary
=> changed virtualbox compiled from ArchLinux user repositury

And remote virtual desktop is still getting frozen in the same way.

Logs says nothing, I went through vbox.log, dmesg, messages.log, kernel.log, syslog, faillog - nothing relevant at all."	defect	closed	virtual disk	VirtualBox 3.2.6	fixed	vdi lvm vmdk sata storage freezing		Linux	Linux