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NEWS: Mention migration fixes and iothread mapping

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Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
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Peter Krempa 2024-01-12 10:24:12 +01:00
parent 924ba34af9
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NEWS.rst
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@ -24,10 +24,45 @@ v10.0.0 (unreleased)
This should enable faster migration of memory pages that the destination
tries to read before they are migrated from the source.
* qemu: Add support for mapping iothreads to virtqueues of ``virtio-blk`` devices
QEMU added the possibility to map multiple ``iothreads`` to a single
``virtio-blk`` device and map them even to specific virtqueues. Libvirt
adds a ``<iothreads>`` subelement of the ``<disk> <driver>`` element that
users can use to configure the mapping.
* qemu: Allow automatic resize of block-device-backed disk to full size of the device
The new flag ``VIR_DOMAIN_BLOCK_RESIZE_CAPACITY`` for
``virDomainBlockResize`` allows resizing a block-device backed ``raw`` disk
of a VM without the need to specify the full size of the block device.
* **Improvements**
* qemu: Improve migration XML use when persisting VM on destination
When migrating a VM with a custom migration XML, use it as a base for
persisting it on the destination as users could have changed non-ABI
breaking facts which would prevent subsequent start if the old XML were used.
* qemu: Simplify non-shared storage migration to ``raw`` block devices
The phase of copying storage during migration without shared storage
requires that both the source and destination image are identical in size.
This may not be possible if the destination is backed by a block device
and the source image size is not a multiple of the block device block size.
Libvirt aleviates this by automatically adding a ``<slice>`` to match the
size of the source image rather than failing the migration.
* **Bug fixes**
* qemu: Various migration bug fixes and debuggability improvement
This release fixes multiple bugs in virsh and libvirt in handling of
migration arguments and XMLs and modifies error reporting for better
debugging.
v9.10.0 (2023-12-01)
====================