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fix(k8s): add HostToContainer mount propagation to kind extraMounts 

Without propagation, rbind submounts on the host (e.g., XFS zvol at
/srv/kind/solana) are invisible inside the kind node — it sees the
underlying filesystem (ZFS) instead. This causes agave's io_uring to
deadlock on ZFS transaction commits (D-state in dsl_dir_tempreserve_space).

HostToContainer propagation ensures host submounts propagate into the
kind node, so /mnt/solana correctly resolves to the XFS zvol.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
fix/kind-mount-propagation
A. F. Dudley 2026-03-07 13:07:12 +00:00
parent eae4c3cdff
commit a11d40f2f3
1 changed files with 13 additions and 3 deletions
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16
stack_orchestrator/deploy/k8s/helpers.py
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@ -573,14 +573,18 @@ def _generate_kind_mounts(parsed_pod_files, deployment_dir, deployment_context):
Path(f"./data/{backup_subdir}/etcd"), deployment_dir
)
volume_definitions.append(
f" - hostPath: {etcd_host_path}\n" f" containerPath: /var/lib/etcd\n"
f" - hostPath: {etcd_host_path}\n"
f" containerPath: /var/lib/etcd\n"
f" propagation: HostToContainer\n"
)
pki_host_path = _make_absolute_host_path(
Path(f"./data/{backup_subdir}/pki"), deployment_dir
)
volume_definitions.append(
f" - hostPath: {pki_host_path}\n" f" containerPath: /etc/kubernetes/pki\n"
f" - hostPath: {pki_host_path}\n"
f" containerPath: /etc/kubernetes/pki\n"
f" propagation: HostToContainer\n"
)
# Note these paths are relative to the location of the pod files (at present)
@ -621,6 +625,7 @@ def _generate_kind_mounts(parsed_pod_files, deployment_dir, deployment_context):
volume_definitions.append(
f" - hostPath: {host_path}\n"
f" containerPath: {container_path}\n"
f" propagation: HostToContainer\n"
)
if opts.o.debug:
print(f"Added host path mount: {host_path}")
@ -648,6 +653,7 @@ def _generate_kind_mounts(parsed_pod_files, deployment_dir, deployment_context):
volume_definitions.append(
f" - hostPath: {host_path}\n"
f" containerPath: {container_path}\n"
f" propagation: HostToContainer\n"
)
return (
""
@ -703,7 +709,11 @@ def _generate_high_memlock_spec_mount(deployment_dir: Path):
references an absolute path.
"""
spec_path = deployment_dir.joinpath(constants.high_memlock_spec_filename).resolve()
return f" - hostPath: {spec_path}\n" f" containerPath: {spec_path}\n"
return (
f" - hostPath: {spec_path}\n"
f" containerPath: {spec_path}\n"
f" propagation: HostToContainer\n"
)
def generate_high_memlock_spec_json():