[Xen/xl] dom0 needs to run qemu for qcow access
Bug #1396068 reported by
Stefan Bader
This bug affects 2 people
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
xen (Debian) |
Fix Released
|
Unknown
|
|||
xen (Ubuntu) |
Fix Released
|
Medium
|
Unassigned | ||
Trusty |
Fix Released
|
Medium
|
Unassigned | ||
Utopic |
Fix Released
|
Medium
|
Unassigned |
Bug Description
Running a qemu process for dom0 will enable paravirtualized guests (PVM) to use special disk images like qcow2. The problem is that in order to boot those with pygrub, the image has to be temporarily accessed from dom0. But without the qemu process running only raw images can be used.
Openstack by default uses qcow2 images and PVM guests. So trying to use nova on a Xen hosts currently fails to bring up instances (xl via libvirt). This bug is related to bug #1394327 (we also need a bug fix in qemu to make this work).
no longer affects: | debian |
Changed in xen (Ubuntu Trusty): | |
importance: | Undecided → Medium |
status: | New → Triaged |
Changed in xen (Ubuntu Utopic): | |
importance: | Undecided → Medium |
status: | New → Triaged |
Changed in debian: | |
status: | Unknown → New |
affects: | debian → xen (Debian) |
Changed in xen (Ubuntu): | |
assignee: | Stefan Bader (smb) → nobody |
Changed in xen (Debian): | |
status: | New → Fix Committed |
Changed in xen (Debian): | |
status: | Fix Committed → Fix Released |
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This bug was fixed in the package xen - 4.4.1-3ubuntu2
---------------
xen (4.4.1-3ubuntu2) vivid; urgency=low
* Applying Xen Security Advisories:
do_mmu_ update( ) xlat_continuati on() to actual arguments
- CVE-2014-8594 / XSA-109
* x86: don't allow page table updates on non-PV page tables in
- CVE-2014-8595 / XSA-110
* x86emul: enforce privilege level restrictions when loading CS
- CVE-2014-8866 / XSA-111
* x86: limit checks in hypercall_
- CVE-2014-8867 / XSA-112
* x86/HVM: confine internally handled MMIO to solitary regions
- CVE-2014-9030 / XSA-113
* x86/mm: fix a reference counting error in MMU_MACHPHYS_UPDATE
* Pulling in Debian change to start qemu in dom0 (LP: #1396068)
* Picking up Debian change to recommend grub-xen-host from xen-utils.
* Picking up Debian change to really include xen-init-name.
-- Stefan Bader <email address hidden> Wed, 19 Nov 2014 13:47:12 +0100