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Ticket Resolution Summary Owner Reporter
#6388 fixed delete snapshot deletes primary master disk rkit
Description

In a szenario with differencing disks and snapshots deleting the last snapshot removes the primary master disk for the VM.
I have disks as follows:

Windows XP core disk
--- Windows XP Base disk (differencing disk with Windows XP core disk as parent)


The VM 'Windows XP Base' uses 'Windows XP Base Disk' as primary master.

Two snapshots are created:

snapshot 1
---- snapshot 2
--------current state


I then tried to delete snapshots 1 and 2 and merge their contents into 'Windows XP Base disk'. Deleting snapshot 2 (which is very small) leaves

snapshot 1
---- current state


and everything looks normal.
Deleting snapshot 1 takes longer to merge and leaves only 'current state', but disk 'Windows XP Base disk' is gone. The VM is based on a disk in the machine's snapshot directory, which has 'Windows XP Core disk' as parent.
The VM is no longer bootable, VB reports that ntoskrnl.exe cannot be found.
I didn't try it yet, but it seems that restoring the VM from a backup would need heavy editing of the XML files, because the VMs information is not only kept in the <machine>.xml, but is strongly connected to the disk / snapshot hierarchy definition in the <MediaRegistry> within the Virtualbox.xml file.

#9756 fixed delay loop calibration failed for 2.6.32 guest kernels on Intel Atom CPU 330 Ralph Schmieder
Description

Going from CentOS5 to CentOS6 and the kernel change from 2.6.18 to 2.6.32 breaks the timer calibration and makes the system almost totally unusable (also on other 2.6.32 or newer based distros).

There's no VT-x on the Atom so HPET is turned off. However, I can observe the effect also on a Mac Mini w/ VirtualBox 4. The impact is not as dramatic as the Core2Duo on the Mac provides more performance to begin with. But the delay loop calibration on the Mac is also off (and not showing the value 2.6.18 shows).

I'm running VirtualBox 4.1.4 on a 64-Bit Ubuntu 10.04 w/ ~4G of DRAM and an Intel Atom 330 Dual Core CPU w/ HT

Please see the additional log files with cpuinfo etc on the virtual and the physical systems.

On 2.6.32 for the guest:

Fast TSC calibration failed
TSC: Unable to calibrate against PIT
TSC: HPET/PMTIMER calibration failed.
Marking TSC unstable due to could not calculate TSC khz
Calibrating delay loop... 293.88 BogoMIPS (lpj=146944)
Initializing cgroup subsys cpuacctmce: CPU supports 0 MCE banks
Performance Events: unsupported p6 CPU model 28 no PMU driver, software events only.
weird, boot CPU (#0) not listed by the BIOS.
APIC calibration not consistent with PM-Timer: 247ms instead of 100ms
APIC delta adjusted to PM-Timer: 6254153 (15508853)
Total of 1 processors activated (293.88 BogoMIPS).
Switching to clocksource jiffies
Switching to clocksource acpi_pm
hrtimer: interrupt took 3406704 ns

On 2.6.18 for the guest:

Calibrating delay loop (skipped), value calculated using timer frequency.. 3200.05 BogoMIPS (lpj=1600025)
Intel machine check reporting enabled on CPU#0.
CPU0: Intel(R) Atom(TM) CPU  330   @ 1.60GHz stepping 02
Using local APIC timer interrupts.
WARNING calibrate_APIC_clock: the APIC timer calibration may be wrong.
Brought up 1 CPUs
ACPI: (supports S0 S1 S4 S5<6>Time: acpi_pm clocksource has been installed.

Thanks for looking into this! -ralph

#20169 invalid delate an account mslowky
Description

I have trued a few times downloading them again after cleared cache and cookies, however, Im still not able to open the oracle DB developer by gmail’ account. When I open the virtual box, it automatically connects to my work account which is iCloud’ one. So id like to delate the iCloud’s account for now. How can I delate an account?

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