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Re: [libvirt] [PATCH v2 00/11] qemu: Fix <shareable/> disks for new qemu



On Wed, Nov 22, 2017 at 11:56:43AM +0100, Peter Krempa wrote:
Introduction of the disk image locking in qemu created a regression
where disk shared access with <shareable/> would not work.

Since the disk locking is a desired feature, allow libvirt to configure
qemu in such way that <shareable/> disks are exempt from write locks.

First few patches refactor some stuff so that it's less ugly.


Thank you.

This series also mandates that sharing is used only with 'raw' disks
since other formats could corrupt metadata.

v2:
- better capability detection (all the drive types)
- fixed bug when share-rw would be used only with virtio disks
- improved error message with automatic format probing
- rebased to current master (new capability)
- added BZ links into few cover letters

Peter Krempa (11):
 qemu: Move snapshot disk validation functions into one
 qemu: domain: Despaghetify qemuDomainDeviceDefValidate
 qemu: domain: Move hostdev validation into separate function
 qemu: domain: Move video device validation into separate function
 qemu: domain: Refactor domain device validation function
 qemu: block: Add function to check if storage source allows concurrent
   access
 qemu: domain: Reject shared disk access if backing format does not
   support it
 qemu: snapshot: Disallow snapshot of unsupported shared disks
 qemu: Disallow pivot of shared disks to unsupported storage
 qemu: caps: Add capability for 'share-rw' disk option
 qemu: command: Mark <shared/> disks as such in qemu


ACK series

Jan

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