Ticket #11862 (closed defect: fixed)

Opened 10 months ago

Last modified 9 months ago

virtualbox 4.2.12 r84980 freezes on btrfs (linux kernel 3.9.5)

Reported by: Cova Owned by:
Priority: major Component: other
Version: VirtualBox 4.2.12 Keywords: btrfs
Cc: Guest type: Windows
Host type: Linux


On a linux machine with btrfs filesystem, installation of a guest goes just fine but at first restart the guest freezes with popup showing "20%" during launch phase. Installing the same machine on XFS, no problems at all. I've seen similar reports, but with slightly different behaviours and declared fixed. host machine: linux 3.9.5 x86_64 (gentoo) guests: W8/W7 64bit attached: vbox.log of failed session


Win7-2013-06-11-21-00-15.log.gz Download (6.0 KB) - added by Cova 10 months ago.

Change History

Changed 10 months ago by Cova


comment:1 follow-up: ↓ 2 Changed 10 months ago by michael

Was this a one-time occurrence or is it reproducible?

comment:2 in reply to: ↑ 1 Changed 10 months ago by Cova

Replying to michael:

Was this a one-time occurrence or is it reproducible?

Happens every time, always reproducible.

I can add that I tested both packages available on gentoo (one built from sources, the other using binary from virtualbox site) and the behaviour is the same.

comment:3 Changed 9 months ago by Ufven

I'm experiencing the same issue running Fedora 19 and btrfs. However, if I enable "Use host I/O cache" on the VM's SATA controller, the problem goes away.

comment:4 Changed 9 months ago by frank

In that case I assume that there is some problem when opening files with O_DIRECT on btrfs. We saw such problems with EXT4 and XFS before with older Linux kernels.

comment:5 Changed 9 months ago by Cova

After some day, I'm no longer able to reproduce the issue. I don't know if this is relevant, as I've got no time to check kernels changelog, but I changed kernel and now I'm running on 3.10 and I'm not able to reproduce the same behaviour.

comment:6 Changed 9 months ago by frank

  • Status changed from new to closed
  • Resolution set to fixed

Thanks, let's close this ticket then.

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