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Ticket Resolution Summary Owner Reporter
#3917 duplicate Appliance export ends with error before/when finished. Foot Hills
Description

VitualBox 2.2.2 + VBoxGuestAdditions

The Host is Windows Vista Ultimate 64 bit SP1 + all updates/patches. The Guest is Windows XP prof. 32 bit SP3 + all updates/patches.

The export of the Appliance (winXPprof) ends with the error message "VirtualBox Interface failure/is out of order " of the host system (vista 64bit).

Then you have to close the program VirtualBox because all machines are "resetted" to null. The import of this exported Appliance is not possible.

The export of other guest systems ends with the same error message.

#3918 duplicate Appliance export ends with error before/when finished. Foot Hills
Description

VitualBox 2.2.2 + VBoxGuestAdditions

The Host is Windows Vista Ultimate 64 bit SP1 + all updates/patches. The Guest is Windows XP prof. 32 bit SP3 + all updates/patches.

The export of the Appliance (winXPprof) ends with the error message "VirtualBox Interface failure/is out of order " of the host system (vista 64bit).

Then you have to close the program VirtualBox because all machines are "resetted" to null. The import of this exported Appliance is not possible.

The export of other guest systems ends with the same error message.

#6506 duplicate Appliance export is horribly slow mickler
Description

Dear developers,

I am using Debian Lenny 64-bit host system. I created and installed a Scientific Linux 64-bit guest with dynamic sized hard disk (20 GB max). Now I want to export it using the File->Export Appliance... Wizard. The write speed varies between 500k and 1.5MB per second while reads are occuring intermittently at ~10MB/s (numbers taken from iotop). The progress meter tells me that the remaining time is something about 4 hours.

I think this is a serious performance flaw in VirtualBox... I see roughly the same disk speed if I do dd if=/dev/zero of=somfile bs=1, i.e. writing 1 byte at a time to a file on disk. When using a tmpfs as target for the export, it is reasonably fast - but I don't have enough RAM to use this a a work-around ;-)

If this is of interest - my file systems are XFS and the virtual machine files are under /home/ and export is done to /opt/:

/dev/sda6 on / type xfs (rw,relatime,logbufs=8,logbsize=256k) /dev/sda7 on /home type xfs (rw,relatime,logbufs=8,logbsize=256k)

Thanks in advance for your help.

Cheers, Holger

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