[pve-devel] [PATCH pve-manager] postinst: Filter RADOS block devices

[Friedrich Weber]

On 14/12/2023 10:56, Stefan Hanreich wrote:> On 12/14/23 10:55, Stefan
Hanreich wrote:
>> Yes, at this point I'm also not sure there is a sane way to handle this.
> 
> doing it for new installations should be possible though

Yeah, I'd agree that it's probably the safest to not rewrite existing
global_filters. So we could just update the snippet that is added by the
pve-manager postinst to also include the rbd filter, but keep the
general rewriting logic the same (meaning, we do not touch the file if
it contains LVM_CONF_MARKER). And then add some check to pve7to8 and a
note to the upgrade guide.

I think even then, we would get a kind-of automatic migration path for
free (I haven't actually tested this though): When upgrading from PVE 7
to 8, users are (IIRC always) asked whether they want to keep
/etc/lvm/lvm.conf or install the package maintainers version. If they
choose the package maintainers version (which seems reasonable if they
never edited the LVM config), lvm.conf is replaced with the upstream lvm
default config, and subsequently our pve-manager postinst would add the
global filter again, but this time with the rbd filter?