host volumes: add configuration to GC on node GC #25903
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aimeeu
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May 20, 2025
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When a node is garbage collected, any dynamic host volumes on the node are orphaned in the state store. We generally don't want to automatically collect these volumes and risk data loss, and have provided a CLI flag to `-force` remove them in #25902. But for clusters running on ephemeral cloud instances (ex. AWS EC2 in an autoscaling group), deleting host volumes may add excessive friction. Add a configuration knob to the client configuration to remove host volumes from the state store on node GC. Ref: #25902 Ref: #25762 Ref: https://hashicorp.atlassian.net/browse/NMD-705
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gulducat
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| raw := req.URL.Query().Get("force") | ||
| var force bool | ||
| if raw != "" { | ||
| var err error | ||
| force, err = strconv.ParseBool(raw) | ||
| if err != nil { | ||
| return nil, CodedError(400, "invalid force value") | ||
| } | ||
| } | ||
| args.Force = force |
There was a problem hiding this comment.
| @@ -671,7 +671,7 @@ func (v *HostVolume) Delete(args *structs.HostVolumeDeleteRequest, reply *struct | |||
| // serialize client RPC and raft write per volume ID | |||
| index, err := v.serializeCall(vol.ID, "delete", func() (uint64, error) { | |||
| if err := v.deleteVolume(vol); err != nil { | |||
| if structs.IsErrUnknownNode(err) { | |||
| if structs.IsErrUnknownNode(err) || structs.IsErrNoNodeConn(err) { | |||
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When a node is garbage collected, any dynamic host volumes on the node are orphaned in the state store. We generally don't want to automatically collect these volumes and risk data loss, and have provided a CLI flag to
-forceremove them in #25902. But for clusters running on ephemeral cloud instances (ex. AWS EC2 in an autoscaling group), deleting host volumes may add excessive friction. Add a configuration knob to the client configuration to remove host volumes from the state store on node GC.(This also fixes a bug I discovered in #25902)
Ref: #25902
Ref: #25762
Ref: https://hashicorp.atlassian.net/browse/NMD-705
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