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ERROR_VOLMGR_PACK_ID_INVALID
Read the code at the owning storage layer: volmgr pack id invalid
Windows returns ERROR_VOLMGR_PACK_ID_INVALID, value 0xC0380030, at the volmgr boundary. It means that the pack identifier cannot be resolved in the current volume-manager namespace while diagnosing this result. Preserve the exact handle and generation of dynamic-disk pack identity, quorum and replicated configuration log before any rescan changes the evidence.
Dynamic volumes are represented as packs containing disks and volumes; each volume has one or more plexes, and each plex is assembled from members and extents while diagnosing this result. Indices and counts are relative to the submitted layout generation, while configuration logs are replicated across participating dynamic disks. This object model determines which identifiers, counts and ownership state are meaningful.
Keep the first result attached to its request parameters and object generation. Cleanup failures or a later drive-letter change are secondary evidence, not replacements for the original boundary.
Build a trustworthy incident record
| Storage diagnostic field | Value |
|---|---|
| Owning object | dynamic-disk pack identity, quorum and replicated configuration log |
| Rejected invariant | the pack identifier cannot be resolved in the current volume-manager namespace |
| Identity and generation | pack GUID and name, online state, primary flag, disk inventory, configuration-log sequence numbers, quorum view and failing transaction ID |
| Narrow experiment | serialize the exact VM_VOLUME_LAYOUT buffer, validate every count and Size field, and compare it with a layout produced by a known-good management API |
| Closest comparison | ERROR_VOLMGR_PACK_INVALID |
A management layer handling this result should report later recovery errors separately, because they answer a different question from the failed storage operation.
Controlled comparison
- Before changing state for it, freeze the failing generation and save pack GUID and name, online state, primary flag, disk inventory, configuration-log sequence numbers, quorum view and failing transaction ID for it.
- Exercise this exact comparison for it: serialize the exact VM_VOLUME_LAYOUT buffer, validate every count and Size field, and compare it with a layout produced by a known-good management API while diagnosing this result.
- During the result comparison, keep image bytes, unrelated disks, provider policy and cluster topology fixed for it.
- After the test, record the next return value and the durable object state; crossing the boundary should expose a later result rather than silently retrying.
Compare traces for ERROR_VOLMGR_PACK_INVALID and it. The latter page covers a nearby storage boundary, whereas it rejects the pack identifier cannot be resolved in the current volume-manager namespace. A correct caller should be able to reproduce each case independently for it.
Mechanism-specific note
The identifier must be resolved in the same enumeration generation and provider scope that will execute the operation. Store the stable GUID plus the pack generation for it. Drive letters, friendly names and array positions are unsuitable substitutes because they can change independently of the underlying dynamic-volume object while diagnosing it.
Completion criteria
Repair the pack configuration through supported dynamic-disk management, preserving GUIDs and the newest valid log sequence; avoid sector-level edits to replicated metadata. After correcting it, reopen the pack, volume, tier, snapshot or virtual disk so no cached generation participates in the validation run.
- the first retry uses newly enumerated identifiers rather than cached handles while diagnosing it.
- The durable metadata or provider state agrees with the success returned after it.
- A second run after close/reopen does not recreate the rejected the condition.
- the nearby
ERROR_VOLMGR_PACK_INVALIDpath remains separately testable and separately logged.
Do not use it as a reason to edit dynamic-disk sectors, VHDX metadata, RCT sidecars or snapshot support files directly. Unsupported edits can turn a recoverable state mismatch into persistent corruption while diagnosing it.
Technical references
- Microsoft: COM error codes for VOLMGR, VHD and SDIAG — primary API or object-model reference for the boundary.
- Microsoft: Virtual Disk Service object model — use this source to verify volmgr state and parameters for it.
- Microsoft: Pack object — documents the supported management path relevant to it.
- Microsoft: Virtual Disk Service common return codes — defines the volmgr objects used to interpret it.
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