[PVE-User] "Backups do not currently work with IO Thread enabled"

Olivier Mascia noc at tipgroup.net
Fri Mar 8 09:22:21 CET 2019

From /pve-docs/chapter-qm.html#qm_hard_disk:

> IO Thread
> The option IO Thread can only be used when using a disk with the VirtIO controller, or with the SCSI controller, when the emulated controller type is  VirtIO SCSI single. With this enabled, Qemu creates one I/O thread per storage controller, instead of a single thread for all I/O, so it increases performance when multiple disks are used and each disk has its own storage controller.
> *Note that backups do not currently work with IO Thread enabled.*

What are the prospects of this limitation of backups regarding IO Thread be resolved any time soon?  Or is this issue something that could possibly never be overcome?

Best Regards, Meilleures salutations, Met vriendelijke groeten,
Olivier Mascia

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