[pve-devel] [PATCH qemu-server 1/1] fix #5779: vm start: pass storage hints when activating guest volumes

Thomas Lamprecht t.lamprecht at proxmox.com
Fri Nov 14 01:06:16 CET 2025


On Fri, 31 Oct 2025 11:36:13 +0100, Friedrich Weber wrote:
> Currently supported hints are
> 
> - 'guest-is-windows' to denote a Windows guest,
> - 'plugin-may-deactivate-volume' which denotes that the plugin may
>   deactivate and re-activate a volume to apply a hint.
> 
> Currently the only consumer of hints is the RBD plugin. In case a
> Windows VM guest volume is mapped using KRBD, certain VM workloads may
> cause degraded performance and e.g. "libceph: [...] bad crc/signature"
> messages in the host journal. A workaround is to pass the rxbounce
> option when mapping the volume [1]. If 'guest-is-windows' is set to 1,
> the RBD plugin will map the guest volume with the rxbounce option.
> 
> [...]

Applied, thanks!

[1/1] fix #5779: vm start: pass storage hints when activating guest volumes
      commit: 7b883dbb107c94e4a8c8a297010e315e154317f6




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