## What this PR does
Bumps `linstor-csi` from v1.10.5 to v1.10.6 and ships an out-of-tree
patch that fixes live migration of KubeVirt VMs whose volumes sit on a
DRBD Protocol-A/B resource (e.g. a `replicated-async` StorageClass).
### Problem
DRBD requires Protocol C whenever `allow-two-primaries=yes` is enabled.
Operators commonly opt into Protocol A on a per-resource-group basis for
async / WAN replication, which silently breaks every subsequent live
migration of consumers of those volumes: `drbdadm adjust` rejects the
second-attach with `Protocol C required` (errno 139), KubeVirt's
evacuation loop retries indefinitely, and the VM stays pinned to the
source node.
### Change
- `LINSTOR_CSI_VERSION` 1.10.5 → 1.10.6 (Makefile + Dockerfile default).
- New patch `002-protocol-c-override-for-dual-attach.diff`: when
`Attach` installs `allow-two-primaries=yes` on the resource-definition
during a second attach, it also installs `DrbdOptions/Net/protocol=C` as
an override on the resource-definition. The override applies to every
connection (including diskless TieBreaker peers, where a per-pair
override would still leave one connection broken). It is tagged with
`Aux/csi-protocol-override=yes` so `Detach` removes only the override
this driver installed, leaving any operator-set `Protocol` property on
the resource-definition untouched.
- Existing patch `001-relocate-after-clone-restore.diff` regenerated
against v1.10.6 (context shift only, no logic change — the old patch
hunks no longer aligned cleanly).
### Verification
- `make image-linstor-csi` builds successfully on linux/amd64 with both
patches applied.
- End-to-end test on dev5 cluster (KubeVirt v1.6.3, 3-node Talos):
created a Protocol-A resource-group + StorageClass, provisioned a VM on
top, and triggered live migration. Migration succeeds in a single Attach
with the override installed during dual-attach and removed by Detach.
Reproducer (without the patch) is the well-known evacuation loop with
`(node) Failed to adjust DRBD resource ... Protocol C required`.
### Upstream
Upstreamed as draft PR piraeusdatastore/linstor-csi#435.
### Compatibility
- No behaviour change for resources already using Protocol C (the common
case).
- No behaviour change for resources never attached with
allow-two-primaries.
- Idempotent: re-running `Attach` is a no-op once the override is
installed.
- Operator-set Protocol overrides on the resource-definition are
preserved (gated by the Aux marker).
### Release note
```release-note
fix(linstor): live migration of KubeVirt VMs on Protocol-A/B (async) DRBD volumes no longer fails with "Protocol C required" — linstor-csi now installs a Protocol=C override on the resource-definition during dual-attach and reverts it on detach.
```
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Automatic replica relocation after volume clone and snapshot restore
to improve placement and load distribution.
* Conditional DRBD protocol override to enable/clean up dual-attach
(two-primaries) scenarios more reliably.
* **Chores**
* Updated LINSTOR CSI default to v1.10.6.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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