[pve-devel] [PATCH qemu-server] qcow2: increase cache-size to 1GB

[Fiona Ebner]

Am 02.10.25 um 11:40 AM schrieb Fiona Ebner:
> Am 14.08.25 um 1:10 PM schrieb DERUMIER, Alexandre via pve-devel:
>>>> we also know the image size here, so we could use a capped, derived
>>>> value?
> 
> Yes, I'd also be in favor of using something calculated from the size.
> We could additionally add a drive configuration option to override the
> value if we really want to.

After sleeping over this, I think going the conservative route and
making this opt-in is the only sensible option outside of a major
release. Otherwise, we are bound to break somebody's setup, because
there surely are some setups with large enough VM disks, which cannot
handle additional gigabytes of memory consumption.