kernel-packages team mailing list archive

[Joseph Salisbury <joseph.salisbury@xxxxxxxxxxxxx>]

Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v3.17 kernel[0].

If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag:
'kernel-bug-exists-upstream'.

If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".


Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.17-rc1-utopic/


** Changed in: linux (Ubuntu)
   Importance: Undecided => Medium

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https://bugs.launchpad.net/bugs/1359146

Title:
  Kernel crash when mounting bcache on a vm with virtio

Status in “linux” package in Ubuntu:
  Confirmed

Bug description:
  bcache used in a virtual machine:

  If you create a bcache device with caching device and backing device
  on virtio disks, it will let you do your work until you mount it where
  it crashes the virtual machine (virtual machine is utopic, host is
  trusty).

  For example:
  if your backing device is /dev/vdb, and your caching device is /dev/vdc:

  sudo make-bcache -B /dev/vdc -C /dev/vdb --writeback
  is ok

  mkfs.ext4 /dev/bcache0 -L bcache-test
  is ok

  but
  mount /dev/bcache0 /media/bcache

  make it crash, if I remember well one time I had a few seconds before
  crash, but I don't have any log files.

  qemu-system-x86 is version 2.0.0+dfsg-2ubuntu1.2

  Re-installing, and using IDE virtual interface seems to create and
  mount the bcache device is ok.

  After bcache created an mounted successfully with IDE interfaces,
  switching to SATA, SCSI, and USB with booting and mounting seemed ok.

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