[pve-devel] [PATCH qemu-server 1/1] fix #4507 : increase qemu max openfiles limit

Fiona Ebner f.ebner at proxmox.com
Tue Dec 12 13:20:26 CET 2023

Am 12.12.23 um 12:55 schrieb Thomas Lamprecht:
> Meh, I think the application that actually can use many FDs, which are not
> *that* many, should just raise it to the highest limit possible, so I'd
> rather do this inside QEMU.
> Doing such stuff from the outside is almost always a bit more maintenance
> burden, e.g., cue to our various hacks over multiple releases for correctly
> waiting for the VMID scope to exit.
> We can just patch it in for now downstream while checking if upstream would
> accept that, IMO in modern times FD limits are not much a protection,
> especially if raised from 1024 to a few hundreds of thousands, especially
> as in QEMU the amount isn't really controllable via the guest (i.e.,
> unprivileged code).

Okay, then I'll prepare a QEMU patch and also ask upstream.

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