Dear DRBD on PVE users, this is version 8.0.1 of the LINSTOR Proxmox plugin. It is a small bugfix release that contains two changes, both related to cloud-init images.
The first is a fix for a regression introduced with 8.0.0: By being ways stricter with what names (usually VM disk names or snapshot names) are valid it was no longer possible to create cloud-init images on DRBD. That is now possible. A word on if that even makes sense later. Secondly, PVE behaves a bit different for cloud init images compared to VM disk images. Disk images are created once ("alloc") and then used after an "activate" and get a "deactivate" when they are not used anymore. In "alloc" we create the LINSTOR resource (which might get placed on a subset of PVE nodes), and when the VM is started ("activate") we check if there is the necessary DRBD device on that node and if not we create a diskless assignment. On "deactivate" we delete such unnecessary diskless assignments. Cloud init images on the other hand have their configuration stored in PVE and if such an image does not exist it can be re-generated immediately, the config is just a few KB, the "iso" a few MB. So if a VM with it's cloud init image on DRBD starts on a node that currently does not have access to the DRBD device hosting the cloud init image this happens: PVE stat()s the device path and it does not exist, it does not send an "activate", but it just tries to recreate it ("alloc"). And that is where we failed, because the LINSTOR resource already existed (and we errored out in "alloc"), but it just was not available yet on that node. If we detect that scenario now, we return from "alloc", and wait for the "activate" to make the cloud init image available on that particular node. People insist on having everything on one storage, but my personal opinion: Don't put cloud init images on DRBD, I don't see any reason for that. The config (IP settings, DNS settings,...) is in PVE, they can be created on the fly, and that is what PVE does. Just put them on local LVM and be done with it. When you move a VM PVE will recreate the cloud init image on the destinations node's local LVM (and delete it from the old node). Regards, rck GIT: https://github.com/LINBIT/linstor-proxmox/commit/595c9f15ea72d99dd3f82fb94cefa74aaf0b0770 TGZ: https://pkg.linbit.com//downloads/connectors/linstor-proxmox-8.0.1.tar.gz
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