[Bug 517067] Re: Using virtio for block devices makes disks and partitions disappear in KVM/QEMU (using vmbuilder and libvirt)

2015-10-30 Thread Serge Hallyn
** Changed in: vm-builder (Ubuntu)
   Status: Confirmed => Fix Released

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Title:
  Using virtio for block devices makes disks and partitions disappear in
  KVM/QEMU (using vmbuilder and libvirt)

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[Bug 517067] Re: Using virtio for block devices makes disks and partitions disappear in KVM/QEMU (using vmbuilder and libvirt)

2015-10-30 Thread Tinco Andringa
This bug has been fixed now https://code.launchpad.net/~tinco-
andringa/vmbuilder/vmbuilder/+merge/242076 has been merged.

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Title:
  Using virtio for block devices makes disks and partitions disappear in
  KVM/QEMU (using vmbuilder and libvirt)

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[Bug 517067] Re: Using virtio for block devices makes disks and partitions disappear in KVM/QEMU (using vmbuilder and libvirt)

2015-06-17 Thread Tinco Andringa
What has Ubuntu Lucid to do with this bug? Isn't it in any version of
Ubuntu that ships with this software?

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Title:
  Using virtio for block devices makes disks and partitions disappear in
  KVM/QEMU (using vmbuilder and libvirt)

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[Bug 517067] Re: Using virtio for block devices makes disks and partitions disappear in KVM/QEMU (using vmbuilder and libvirt)

2015-06-17 Thread Rolf Leggewie
lucid has seen the end of its life and is no longer receiving any
updates. Marking the lucid task for this ticket as "Won't Fix".

** Changed in: vm-builder (Ubuntu Lucid)
   Status: Confirmed => Won't Fix

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Title:
  Using virtio for block devices makes disks and partitions disappear in
  KVM/QEMU (using vmbuilder and libvirt)

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[Bug 517067] Re: Using virtio for block devices makes disks and partitions disappear in KVM/QEMU (using vmbuilder and libvirt)

2014-11-18 Thread Launchpad Bug Tracker
** Branch linked: lp:tinco-vm-builder/virtio-uuid

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Title:
  Using virtio for block devices makes disks and partitions disappear in
  KVM/QEMU (using vmbuilder and libvirt)

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[Bug 517067] Re: Using virtio for block devices makes disks and partitions disappear in KVM/QEMU (using vmbuilder and libvirt)

2014-11-17 Thread Tinco Andringa
Is anyone watching this issue?

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Title:
  Using virtio for block devices makes disks and partitions disappear in
  KVM/QEMU (using vmbuilder and libvirt)

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[Bug 517067] Re: Using virtio for block devices makes disks and partitions disappear in KVM/QEMU (using vmbuilder and libvirt)

2014-11-11 Thread Ubuntu Foundations Team Bug Bot
The attachment "patch" seems to be a patch.  If it isn't, please remove
the "patch" flag from the attachment, remove the "patch" tag, and if you
are a member of the ~ubuntu-reviewers, unsubscribe the team.

[This is an automated message performed by a Launchpad user owned by
~brian-murray, for any issues please contact him.]

** Tags added: patch

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Title:
  Using virtio for block devices makes disks and partitions disappear in
  KVM/QEMU (using vmbuilder and libvirt)

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[Bug 517067] Re: Using virtio for block devices makes disks and partitions disappear in KVM/QEMU (using vmbuilder and libvirt)

2014-11-11 Thread Tinco Andringa
Hi guys,

I'm stuck on this, so I've made a patch.  I'm not sure how to test it,
perhaps someone give me some pointers? I tried out this bzr thing and
it's super crazy. I can't find out how to fork and submit a pull
request. I browsed through the commands of bzr and there was some
launchpad stuff but none of it worked, either 500 exceptions or plain
nothing happens. Then I found out I can't even few the patch after it
was committed, but I could do send with -o to a file, so that's what I'm
attaching.

Sorry for whining :) hopefully we can work out if this patch is going to
fix this issue.

** Attachment added: "patch"
   
https://bugs.launchpad.net/ubuntu/+source/vm-builder/+bug/517067/+attachment/4258320/+files/patch

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Title:
  Using virtio for block devices makes disks and partitions disappear in
  KVM/QEMU (using vmbuilder and libvirt)

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[Bug 517067] Re: Using virtio for block devices makes disks and partitions disappear in KVM/QEMU (using vmbuilder and libvirt)

2013-06-25 Thread Will Bryant
Yeah, UUID seems like a better idea.

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Title:
  Using virtio for block devices makes disks and partitions disappear in
  KVM/QEMU (using vmbuilder and libvirt)

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[Bug 517067] Re: Using virtio for block devices makes disks and partitions disappear in KVM/QEMU (using vmbuilder and libvirt)

2010-05-18 Thread seph
I agree with Paul Sladen -- if this used the UUID mechanism it would be
simpler to change. That's also what most of the kvm docs indicate. So
why isn't vmbuilder using it?

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[Bug 517067] Re: Using virtio for block devices makes disks and partitions disappear in KVM/QEMU (using vmbuilder and libvirt)

2010-04-09 Thread Thierry Carrez
** Also affects: vm-builder (Ubuntu Lucid)
   Importance: Medium
   Status: Confirmed

** Changed in: vm-builder (Ubuntu Lucid)
Milestone: ubuntu-10.04 => None

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[Bug 517067] Re: Using virtio for block devices makes disks and partitions disappear in KVM/QEMU (using vmbuilder and libvirt)

2010-03-30 Thread Paul Sladen
Surely the problem here, is that for the standard method of mount-by-
UUID is being overridden?

If mount-by-UUID is in use then it doesn't matter whether a device shows
up as /dev/{sd,hd,hv}*

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[Bug 517067] Re: Using virtio for block devices makes disks and partitions disappear in KVM/QEMU (using vmbuilder and libvirt)

2010-03-29 Thread Soren Hansen
** Changed in: vm-builder (Ubuntu)
Milestone: None => ubuntu-10.04

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[Bug 517067] Re: Using virtio for block devices makes disks and partitions disappear in KVM/QEMU (using vmbuilder and libvirt)

2010-02-08 Thread Andreas Ntaflos
You are right of course, /etc/fstab on the guest contains "/dev/sdXY"
entries. These get generated by
/usr/share/pyshared/VMBuilder/plugins/ubuntu/feisty.py as you mentioned.
After changing all "/dev/sdXY" to "/dev/vdXY" I can indeed boot happily
:)

What threw me off was that QEMU did not (and does not) see these virtio-
based drives when booting (see screenshots) and that changing the target
device name in the domain definition (
to  and vice versa) does nothing. I
suppose this has to do with the snippet of documentation I quoted
previously and probably with the fact that the virtio driver is
paravirtualized so QEMU doesn't do any of the emulation it would do with
IDE- or SCSI-based buses. Should have thought of that earlier.

So creating guests in the manner I described in my original post using
vmbuilder works after applying your one-line fix to
/usr/share/pyshared/VMBuilder/plugins/ubuntu/feisty.py.

I am not sure where this bug lies since I am just getting to know the
more advanced aspects of libvirt but I suppose vmbuider is to "blame".
That's understandable given that it is still somewhat young and cannot
consider all possible combinations and varieties of libvirt options. Too
bad virt-install is mostly useless for quickly creating and deploying
guests for testing purposes.

I like your solution b.) but doesn't that add yet another level of
indirection and complicates guest setup even more?

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[Bug 517067] Re: Using virtio for block devices makes disks and partitions disappear in KVM/QEMU (using vmbuilder and libvirt)

2010-02-08 Thread Chuck Short
** Package changed: libvirt (Ubuntu) => vm-builder (Ubuntu)

** Changed in: vm-builder (Ubuntu)
   Importance: Undecided => Medium

** Changed in: vm-builder (Ubuntu)
   Status: New => Confirmed

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Re: [Bug 517067] Re: Using virtio for block devices makes disks and partitions disappear in KVM/QEMU (using vmbuilder and libvirt)

2010-02-05 Thread Scott Moser
On Fri, 5 Feb 2010, Andreas Ntaflos wrote:

> So I don't think that is the problem here, but I will try again. Thanks
> for the comment, again!

I think if you look inside your guest image you will see 'sdaX' in
/etc/fstab.  Disks that are presented to the booted system as virtio will
be named 'vdX'.  The discs didn't disappear, they're named differently
than your /etc/fstab, so they're (correctly) not mounted.

mount the guest image loopback, change sd -> vd and i think you'll boot
happily.  Alternatively, i think you can open up
'./VMBuilder/plugins/ubuntu/feisty.py' and hack in:
-   disk_prefix = 'sd'
+   disk_prefix = 'vd'

The bug could be considered to be in 1 of 2 places:
a.) vmbuilder: its 'install_fstab' routines only ever receive 'sd' for
their self.disk_prefix'
b.) linux/udev : you could suggest that the vdX devices should be
symlinked or other to sdX so that your fstab finds the devices independent
of how they're connected.

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[Bug 517067] Re: Using virtio for block devices makes disks and partitions disappear in KVM/QEMU (using vmbuilder and libvirt)

2010-02-05 Thread Andreas Ntaflos
Thanks for the comment, but how do you figure? I did not change anything
after the fact, I modified the template used for installation and setup
of the guest domain.

First, it seems to depend on the bus type whether the virtual disks are
at all visible to QEMU, as can be seen from the screenshots. At that
point logical device names are of no consequence, yet, because the
kernel isn't even booted.

Second, it does not matter whether the disks are called "vda" or "hda"
(the default) in the libvirt domain definition. From the documentation:
"The dev attribute indicates the "logical" device name. The actual
device name specified is not guaranteed to map to the device name in the
guest OS. Treat it as a device ordering hint." This is further supported
by the fact that upon switching the bus type to "ide" the disks are
visible both to QEMU and to the booted guest Linux kernel but the
logical device name in the domain definition is still "vda"-based.

Third, the logical device name is defined and set early during
installation/setup of the guest since it looks at the modified template
in /etc/vmbuilder/libvirt. So the installation procedure is aware that
disks are named "vda" in the definition and takes that into account (or
should take that into account). It does not matter whether it is "hda"
oder "vda" there (I tried both, multiple times), /etc/fstab will always
have "/dev/sdX*" set.

So I don't think that is the problem here, but I will try again. Thanks
for the comment, again!

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[Bug 517067] Re: Using virtio for block devices makes disks and partitions disappear in KVM/QEMU (using vmbuilder and libvirt)

2010-02-04 Thread Scott Moser
the mountall failed messages fail because there *is* no /dev/sdX* and
your /etc/fstab says to mount them.

You've changed to /dev/vda* , /etc/fstab will need to be updated.

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[Bug 517067] Re: Using virtio for block devices makes disks and partitions disappear in KVM/QEMU (using vmbuilder and libvirt)

2010-02-04 Thread Andreas Ntaflos

** Attachment added: "Domain definition for guest "foo", using virtio for block 
devices"
   http://launchpadlibrarian.net/38748978/foo.xml

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