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Ticket Resolution Summary Owner Reporter
#12912 obsolete VBoxSVC locks with more than 63 VM`s running on the same host Alexandre Felipe Salgado Figueiredo
Description

Hi,

I´ve being experiencing problems with VBoxSVC when more than 63 VM´s running ( the issue begins when the 64th VM is started) , it locks with 13 to 15 % of system resource utilization, and if I try to stop or save one VM, it keeps locking the files preventing to change configurations/restarting the VM. The only way to unlock the files is to stop all VM´s and reboot the Host (killing VBoxSVC after all VM´s down just messes up everything ). I use this environment to test our multiuser application , and I need an environment with 70-80 VM´s running (heterogeneous , with Windows XP, 2003 and 7 as guests ), memory is not an issue, as with all VM´s running I still have 15Gb free on the host.

The host is a Core i7 4870K , with 64Gb of memory running Windows 2012R2 Enterprise. The vhd/vdi files are stored in a RAID 5 array .

If , for example, a new VM is created after the issue is triggered, and a new VM is created , after attaching the VHD, the VBox Manager frozen, i´ve killed it and opened a new one, when i tried to change the VM settings, i got this message >

Failed to open a session for the virtual machine Microsoft2.

The machine 'Microsoft2' is already locked for a session (or being unlocked).

Result Code: VBOX_E_INVALID_OBJECT_STATE (0x80BB0007) Component: Machine Interface: IMachine {480cf695-2d8d-4256-9c7c-cce4184fa048}

In this case, I´ve saved all running VM´s, but all VirtualBox.exe still running ( but no program shows on the task manager ), i´ve attached both print screen.

The only solution i found so far, is to reboot the host, after saving all running VM´s when the host is rebooted, a Vbox Error popup showed up many times ( it seems one per "lost" running VirtualBox.exe process ) , attached the print screen.

No core dumps were generated.

This issue happens since version 4.0 ( i´ve tested all up to 4.3.11 )

Let me know which steps/information is needed in order to pinpoint the root cause and help you fixing this issue.

#2143 duplicate Creating OS/2 Warp 3 guest crashes VirtualBox 2.0 on OS X Leopard Anthony
Description

When I launched VirtualBox 2.0 on Mac OS X Leopard (Intel, Mac Mini Core Duo 1.66 GHz with 2 GB RAM) it works fine for the most part. I have an MS-DOS 6.22 (with Windows for Workgroups 3.11) guest which works fine and a Windows XP Pro with Service Pack 3 guest which works fine as well. However, when I go to create an OS/2 Warp 3 guest, it crashes when I go to make the virtual hard disk drive. I go with the new, dynamically expanding one using the default values for RAM and disk space. As soon as I hit the next button, VirtualBox quits. No errors shown, etc. it just quits. I have more than sufficient disk space free on the host. I tried to get a Core Dump but this is all I got:

anthonys-mac-mini:Applications anthony$ ls V* VirtualBox.app: Contents

anthonys-mac-mini:Applications anthony$ ulimit -c unlimited anthonys-mac-mini:Applications anthony$ VirtualBox VirtualBox(361,0xa0271fa0) malloc: * mmap(size=2147487744) failed (error code=12) * error: can't allocate region * set a breakpoint in malloc_error_break to debug Bus error anthonys-mac-mini:Applications anthony$

#6348 fixed linux host hangs when using shared folders AL13N
Description

Frequently, when using a machine shared folder in the windows guest, the Linux host hangs completely, with no info the linux system logs.

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