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Ticket Resolution Summary Owner Reporter
#17579 fixed kind of review of ticket #16052 -> fixed in Subversion sergiomb
Description

kind of review of ticket #16052

we miss not try to build VBoxGuestR3LibXFree86 and remove /usr/include/x11 from include PATH

#17574 fixed Ubuntu Package Missing -> fixed DX
Description

The Ubuntu .deb package for virtualbox-5.1 appears to be missing.

Installation log below;

wget -q https://www.virtualbox.org/download/oracle_vbox_2016.asc -O- | sudo apt-key add -
OK

wget -q https://www.virtualbox.org/download/oracle_vbox.asc -O- | sudo apt-key add -
OK

apt-get update
Get:8 https://download.virtualbox.org/virtualbox/debian xenial InRelease [7,883 B]
Get:9 https://download.virtualbox.org/virtualbox/debian xenial/contrib amd64 Packages [1,786 B]

apt-get install virtualbox-5.1
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages will be upgraded:
  virtualbox-5.1
1 to upgrade, 0 to newly install, 0 to remove and 4 not to upgrade.
Need to get 66.1 MB of archives.
After this operation, 394 kB of additional disk space will be used.
Err:1 https://download.virtualbox.org/virtualbox/debian xenial/contrib amd64 virtualbox-5.1 amd64 5.1.34-121010~Ubuntu~xenial
  404  Not Found
E: Failed to fetch https://download.virtualbox.org/virtualbox/debian/pool/contrib/v/virtualbox-5.1/virtualbox-5.1_5.1.34-121010~Ubuntu~xenial_amd64.deb 404  Not Found

E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

See attached screenshot of the empty directory in Chrome.

#17573 fixed Regression: "Use Host I/O cache" setting seems to be inverted in 5.2 => fixed in SVN/next maintenance Michi
Description

I believe that between 5.1 and 5.2 some change led to an inversion of the "Use Host I/O cache" setting.

I mark this bug as critical as people that explicitly disable Host I/O caching to ensure data integrity in case of a power outage may now actually have Host I/O caching enabled and are in danger of loosing data in power outage/reset situations.

Using VirtualBox for testing system installations I activate the Host I/O caching setting to increase performance when installing a lot of RPMs in the virtual machine, particularly because the VDI file on the host resides on a mechanical HDD. When switching from VirtualBox 5.1 to 5.2, I noticed a considerable slowdown.

I measured the slowdown with an ansible playlist that brings a minimal system (installed with Fedora kickstart) to a production level system. The script spends most time on installing RPMs.

Some stats of the RPM installation: Number of RPM packages before: 324 Number of RPM packages after: 1490 Total file size of all RPMs before: 734 MiB Total file size of all RPMs after: 3.9 GiB

It is Fedora (guest) on Fedora (host).

This is with the old VirtualBox 5.1, where everything worked as expected. Installation run on VirtualBox 5.1.32, "Use Host I/O cache" activated:

real 7m38.936s user 0m19.646s sys 0m3.937s

Going to VirtualBox 5.2 the effect of the setting seems inverted: Installation run on VirtualBox 5.2.6, "Use Host I/O cache" activated:

real 52m17.548s user 1m22.884s sys 0m17.828s

Installation run on VirtualBox 5.2.6, "Use Host I/O cache" deactivated:

real 10m3.771s user 0m22.089s sys 0m5.119s

And here I confirm that the test version is still affected: Installation run on VirtualBox 5.2.7, "Use Host I/O cache" activated:

real 37m57.730s user 1m13.114s sys 0m15.521s

Installation run on VirtualBox 5.2.7, "Use Host I/O cache" deactivated:

real 11m1.805s user 0m29.377s sys 0m5.790s

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