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POST
/v0/namespaces/{namespace_id}/filesystem/downloads

Authorizes one direct read of a file’s content object and returns a short-lived presigned GET capability, the resolved revision, and the content reference the client checks the arriving bytes against. Range is outside the signature, so one grant serves ranged, resumed, and parallel reads. Deployments that cannot presign answer 501 not_supported; the proxied GET /filesystem/content route stays available and is capped by download.service_proxied.max_content_bytes.

namespace_id
required
string

Namespace id

The path to download and, optionally, the revision to download.

object
path
required

Absolute path of the file to read.

string
Example
/docs/report.txt
revision_no

Revision to read. Omit it for the path’s current revision. Cannot be combined with snapshot_id.

integer format: int64
<= 9007199254740991
snapshot_id

Read the file revision captured by this snapshot. Cannot be combined with revision_no.

string
/^pin_[0-9]{20}-[0-9a-f]{16}$/
Example
pin_00000000000000000001-0000000000000002

Download authorized

A presigned URL for one content object.

The URL expires at access.expires_at_ms; later path changes do not change the object.

object
access
required
One of: discriminator: kind
presigned_url

Short-lived URL plus required headers for one object-store write.

object
expires_at_ms
required

Expiration timestamp in Unix milliseconds.

integer format: int64
headers

Headers that are covered by the signature and must be sent.

object
key
additional properties
string
kind
required
string
Allowed values: presigned_url
method
required

HTTP method the client must use.

string
url
required

Full presigned URL.

string
content_ref
required

The identity, byte length, and checksum of the object to download.

object
checksum
required

Mandatory checksum over the complete object.

object
algorithm
required

Algorithm that produced value.

string
Allowed values: sha256 crc64nvme crc32c
value
required

The canonical lowercase hexadecimal checksum without a prefix.

string
content_id
required

Immutable identity of the content; with the owner, it determines the object key.

string
/^con_[0-9a-f]{32}$/
Example
con_9f2a6c0e4b7d4a90b13f0d8c5e6a2b41
kind
required

Content strategy used by the referenced content.

string
Allowed values: blob_v1
owner_namespace_id
required

Namespace that originally wrote the bytes.

string
/^[a-z0-9][a-z0-9._-]{0,127}$/
Example
demo
size_bytes
required

Complete byte length of the referenced content.

integer format: int64
namespace_id
required

Namespace that was read.

string
/^[a-z0-9][a-z0-9._-]{0,127}$/
Example
demo
path
required

Absolute path as rendered from stored display names.

string
Example
/docs/report.txt
revision_no
required

Revision the capability reads, resolved from the request.

integer format: int64
<= 9007199254740991

Invalid path, revision, snapshot id, non-snapshot checkpoint, or revision_no combined with snapshot_id

HTTP error body used by LoonFS APIs.

object
code
required

The stable machine-readable error code as a string.

string
details

The optional machine-readable context for the error code.

object
active_acquired_at_ms

The Unix-millisecond time when the current writer acquired its epoch, when available.

integer format: int64
active_writer_epoch

Epoch that currently owns the namespace.

integer format: int64
<= 9007199254740991
active_writer_id

The writer ID recorded for the current epoch, when available.

string
actual_access_revision_no

Access revision that is actually current for the inode.

integer format: int64
<= 9007199254740991
actual_attributes_revision_no

Attribute revision that is actually current for the inode.

integer format: int64
<= 9007199254740991
actual_binding_version

Current binding token; absent for the root, which has no binding.

string
/^[0-9a-f]+$/
actual_deletion_seq

Deletion sequence actually active for the inode.

integer format: int64
<= 9007199254740991
actual_head_seq

The actual namespace head sequence.

integer format: int64
<= 9007199254740991
actual_inode_id

The path actually contained this inode.

string
/^ino_[1-9][0-9]*$/
Example
ino_123
actual_revision_no

Revision that is actually current; absent when the inode has none.

integer format: int64
<= 9007199254740991
after_seq

Change-feed cursor the request asked to resume after.

integer format: int64
<= 9007199254740991
commit_id

Idempotency key of the commit the error concerns.

string
/^[a-z0-9][a-z0-9._-]{0,127}$/
Example
c_f3a9c2d4b6e8417a90c5d2f8e1b7a6c0
committed_fingerprint

The fingerprint of the mutation that landed under commit_id, present with committed_seq.

string
committed_seq

The sequence where this commit ID already landed, when recorded by a durable receipt.

integer format: int64
<= 9007199254740991
expected_access_revision_no

Access revision the request expected to be current.

integer format: int64
<= 9007199254740991
expected_attributes_revision_no

Attribute revision the request expected to be current.

integer format: int64
<= 9007199254740991
expected_binding_version

Opaque binding token supplied by the request.

string
/^[0-9a-f]+$/
expected_deletion_seq

Deletion sequence the undelete expected to be active.

integer format: int64
<= 9007199254740991
expected_head_seq

The head sequence required by the request.

integer format: int64
<= 9007199254740991
expected_inode_id

The request expected the path to contain this inode.

string
/^ino_[1-9][0-9]*$/
Example
ino_123
expected_revision_no

Revision the request expected to be current.

integer format: int64
<= 9007199254740991
fenced_writer_epoch

Epoch the failing writer session held when it was displaced.

integer format: int64
<= 9007199254740991
inode_id

Inode the failed precondition or operation targeted.

string
/^ino_[1-9][0-9]*$/
Example
ino_123
max_writer_sessions

Maximum writer sessions admitted by the node.

integer
namespace_id

The deleted namespace that caused the operation to fail.

string
/^[a-z0-9][a-z0-9._-]{0,127}$/
Example
demo
operation_index

The index of the failed operation in the request.

integer format: int32
precondition_index

Zero-based position of the failed request precondition.

integer format: int32
retention_floor_seq

Oldest sequence still promised for incremental replay.

integer format: int64
<= 9007199254740991
feature

The capability feature key for a not_supported error.

string
message
required

Human-readable error message.

string
param

The invalid JSON Pointer, parameter name, CLI flag, or CLI argument.

string
request_id

The request correlation ID also sent in the x-request-id response header.

string

Unauthorized

HTTP error body used by LoonFS APIs.

object
code
required

The stable machine-readable error code as a string.

string
details

The optional machine-readable context for the error code.

object
active_acquired_at_ms

The Unix-millisecond time when the current writer acquired its epoch, when available.

integer format: int64
active_writer_epoch

Epoch that currently owns the namespace.

integer format: int64
<= 9007199254740991
active_writer_id

The writer ID recorded for the current epoch, when available.

string
actual_access_revision_no

Access revision that is actually current for the inode.

integer format: int64
<= 9007199254740991
actual_attributes_revision_no

Attribute revision that is actually current for the inode.

integer format: int64
<= 9007199254740991
actual_binding_version

Current binding token; absent for the root, which has no binding.

string
/^[0-9a-f]+$/
actual_deletion_seq

Deletion sequence actually active for the inode.

integer format: int64
<= 9007199254740991
actual_head_seq

The actual namespace head sequence.

integer format: int64
<= 9007199254740991
actual_inode_id

The path actually contained this inode.

string
/^ino_[1-9][0-9]*$/
Example
ino_123
actual_revision_no

Revision that is actually current; absent when the inode has none.

integer format: int64
<= 9007199254740991
after_seq

Change-feed cursor the request asked to resume after.

integer format: int64
<= 9007199254740991
commit_id

Idempotency key of the commit the error concerns.

string
/^[a-z0-9][a-z0-9._-]{0,127}$/
Example
c_f3a9c2d4b6e8417a90c5d2f8e1b7a6c0
committed_fingerprint

The fingerprint of the mutation that landed under commit_id, present with committed_seq.

string
committed_seq

The sequence where this commit ID already landed, when recorded by a durable receipt.

integer format: int64
<= 9007199254740991
expected_access_revision_no

Access revision the request expected to be current.

integer format: int64
<= 9007199254740991
expected_attributes_revision_no

Attribute revision the request expected to be current.

integer format: int64
<= 9007199254740991
expected_binding_version

Opaque binding token supplied by the request.

string
/^[0-9a-f]+$/
expected_deletion_seq

Deletion sequence the undelete expected to be active.

integer format: int64
<= 9007199254740991
expected_head_seq

The head sequence required by the request.

integer format: int64
<= 9007199254740991
expected_inode_id

The request expected the path to contain this inode.

string
/^ino_[1-9][0-9]*$/
Example
ino_123
expected_revision_no

Revision the request expected to be current.

integer format: int64
<= 9007199254740991
fenced_writer_epoch

Epoch the failing writer session held when it was displaced.

integer format: int64
<= 9007199254740991
inode_id

Inode the failed precondition or operation targeted.

string
/^ino_[1-9][0-9]*$/
Example
ino_123
max_writer_sessions

Maximum writer sessions admitted by the node.

integer
namespace_id

The deleted namespace that caused the operation to fail.

string
/^[a-z0-9][a-z0-9._-]{0,127}$/
Example
demo
operation_index

The index of the failed operation in the request.

integer format: int32
precondition_index

Zero-based position of the failed request precondition.

integer format: int32
retention_floor_seq

Oldest sequence still promised for incremental replay.

integer format: int64
<= 9007199254740991
feature

The capability feature key for a not_supported error.

string
message
required

Human-readable error message.

string
param

The invalid JSON Pointer, parameter name, CLI flag, or CLI argument.

string
request_id

The request correlation ID also sent in the x-request-id response header.

string

Namespace, path, revision, or snapshot not found

HTTP error body used by LoonFS APIs.

object
code
required

The stable machine-readable error code as a string.

string
details

The optional machine-readable context for the error code.

object
active_acquired_at_ms

The Unix-millisecond time when the current writer acquired its epoch, when available.

integer format: int64
active_writer_epoch

Epoch that currently owns the namespace.

integer format: int64
<= 9007199254740991
active_writer_id

The writer ID recorded for the current epoch, when available.

string
actual_access_revision_no

Access revision that is actually current for the inode.

integer format: int64
<= 9007199254740991
actual_attributes_revision_no

Attribute revision that is actually current for the inode.

integer format: int64
<= 9007199254740991
actual_binding_version

Current binding token; absent for the root, which has no binding.

string
/^[0-9a-f]+$/
actual_deletion_seq

Deletion sequence actually active for the inode.

integer format: int64
<= 9007199254740991
actual_head_seq

The actual namespace head sequence.

integer format: int64
<= 9007199254740991
actual_inode_id

The path actually contained this inode.

string
/^ino_[1-9][0-9]*$/
Example
ino_123
actual_revision_no

Revision that is actually current; absent when the inode has none.

integer format: int64
<= 9007199254740991
after_seq

Change-feed cursor the request asked to resume after.

integer format: int64
<= 9007199254740991
commit_id

Idempotency key of the commit the error concerns.

string
/^[a-z0-9][a-z0-9._-]{0,127}$/
Example
c_f3a9c2d4b6e8417a90c5d2f8e1b7a6c0
committed_fingerprint

The fingerprint of the mutation that landed under commit_id, present with committed_seq.

string
committed_seq

The sequence where this commit ID already landed, when recorded by a durable receipt.

integer format: int64
<= 9007199254740991
expected_access_revision_no

Access revision the request expected to be current.

integer format: int64
<= 9007199254740991
expected_attributes_revision_no

Attribute revision the request expected to be current.

integer format: int64
<= 9007199254740991
expected_binding_version

Opaque binding token supplied by the request.

string
/^[0-9a-f]+$/
expected_deletion_seq

Deletion sequence the undelete expected to be active.

integer format: int64
<= 9007199254740991
expected_head_seq

The head sequence required by the request.

integer format: int64
<= 9007199254740991
expected_inode_id

The request expected the path to contain this inode.

string
/^ino_[1-9][0-9]*$/
Example
ino_123
expected_revision_no

Revision the request expected to be current.

integer format: int64
<= 9007199254740991
fenced_writer_epoch

Epoch the failing writer session held when it was displaced.

integer format: int64
<= 9007199254740991
inode_id

Inode the failed precondition or operation targeted.

string
/^ino_[1-9][0-9]*$/
Example
ino_123
max_writer_sessions

Maximum writer sessions admitted by the node.

integer
namespace_id

The deleted namespace that caused the operation to fail.

string
/^[a-z0-9][a-z0-9._-]{0,127}$/
Example
demo
operation_index

The index of the failed operation in the request.

integer format: int32
precondition_index

Zero-based position of the failed request precondition.

integer format: int32
retention_floor_seq

Oldest sequence still promised for incremental replay.

integer format: int64
<= 9007199254740991
feature

The capability feature key for a not_supported error.

string
message
required

Human-readable error message.

string
param

The invalid JSON Pointer, parameter name, CLI flag, or CLI argument.

string
request_id

The request correlation ID also sent in the x-request-id response header.

string

Namespace deleted or snapshot deleted or expired

HTTP error body used by LoonFS APIs.

object
code
required

The stable machine-readable error code as a string.

string
details

The optional machine-readable context for the error code.

object
active_acquired_at_ms

The Unix-millisecond time when the current writer acquired its epoch, when available.

integer format: int64
active_writer_epoch

Epoch that currently owns the namespace.

integer format: int64
<= 9007199254740991
active_writer_id

The writer ID recorded for the current epoch, when available.

string
actual_access_revision_no

Access revision that is actually current for the inode.

integer format: int64
<= 9007199254740991
actual_attributes_revision_no

Attribute revision that is actually current for the inode.

integer format: int64
<= 9007199254740991
actual_binding_version

Current binding token; absent for the root, which has no binding.

string
/^[0-9a-f]+$/
actual_deletion_seq

Deletion sequence actually active for the inode.

integer format: int64
<= 9007199254740991
actual_head_seq

The actual namespace head sequence.

integer format: int64
<= 9007199254740991
actual_inode_id

The path actually contained this inode.

string
/^ino_[1-9][0-9]*$/
Example
ino_123
actual_revision_no

Revision that is actually current; absent when the inode has none.

integer format: int64
<= 9007199254740991
after_seq

Change-feed cursor the request asked to resume after.

integer format: int64
<= 9007199254740991
commit_id

Idempotency key of the commit the error concerns.

string
/^[a-z0-9][a-z0-9._-]{0,127}$/
Example
c_f3a9c2d4b6e8417a90c5d2f8e1b7a6c0
committed_fingerprint

The fingerprint of the mutation that landed under commit_id, present with committed_seq.

string
committed_seq

The sequence where this commit ID already landed, when recorded by a durable receipt.

integer format: int64
<= 9007199254740991
expected_access_revision_no

Access revision the request expected to be current.

integer format: int64
<= 9007199254740991
expected_attributes_revision_no

Attribute revision the request expected to be current.

integer format: int64
<= 9007199254740991
expected_binding_version

Opaque binding token supplied by the request.

string
/^[0-9a-f]+$/
expected_deletion_seq

Deletion sequence the undelete expected to be active.

integer format: int64
<= 9007199254740991
expected_head_seq

The head sequence required by the request.

integer format: int64
<= 9007199254740991
expected_inode_id

The request expected the path to contain this inode.

string
/^ino_[1-9][0-9]*$/
Example
ino_123
expected_revision_no

Revision the request expected to be current.

integer format: int64
<= 9007199254740991
fenced_writer_epoch

Epoch the failing writer session held when it was displaced.

integer format: int64
<= 9007199254740991
inode_id

Inode the failed precondition or operation targeted.

string
/^ino_[1-9][0-9]*$/
Example
ino_123
max_writer_sessions

Maximum writer sessions admitted by the node.

integer
namespace_id

The deleted namespace that caused the operation to fail.

string
/^[a-z0-9][a-z0-9._-]{0,127}$/
Example
demo
operation_index

The index of the failed operation in the request.

integer format: int32
precondition_index

Zero-based position of the failed request precondition.

integer format: int32
retention_floor_seq

Oldest sequence still promised for incremental replay.

integer format: int64
<= 9007199254740991
feature

The capability feature key for a not_supported error.

string
message
required

Human-readable error message.

string
param

The invalid JSON Pointer, parameter name, CLI flag, or CLI argument.

string
request_id

The request correlation ID also sent in the x-request-id response header.

string

JSON body exceeds the 2 MiB limit

HTTP error body used by LoonFS APIs.

object
code
required

The stable machine-readable error code as a string.

string
details

The optional machine-readable context for the error code.

object
active_acquired_at_ms

The Unix-millisecond time when the current writer acquired its epoch, when available.

integer format: int64
active_writer_epoch

Epoch that currently owns the namespace.

integer format: int64
<= 9007199254740991
active_writer_id

The writer ID recorded for the current epoch, when available.

string
actual_access_revision_no

Access revision that is actually current for the inode.

integer format: int64
<= 9007199254740991
actual_attributes_revision_no

Attribute revision that is actually current for the inode.

integer format: int64
<= 9007199254740991
actual_binding_version

Current binding token; absent for the root, which has no binding.

string
/^[0-9a-f]+$/
actual_deletion_seq

Deletion sequence actually active for the inode.

integer format: int64
<= 9007199254740991
actual_head_seq

The actual namespace head sequence.

integer format: int64
<= 9007199254740991
actual_inode_id

The path actually contained this inode.

string
/^ino_[1-9][0-9]*$/
Example
ino_123
actual_revision_no

Revision that is actually current; absent when the inode has none.

integer format: int64
<= 9007199254740991
after_seq

Change-feed cursor the request asked to resume after.

integer format: int64
<= 9007199254740991
commit_id

Idempotency key of the commit the error concerns.

string
/^[a-z0-9][a-z0-9._-]{0,127}$/
Example
c_f3a9c2d4b6e8417a90c5d2f8e1b7a6c0
committed_fingerprint

The fingerprint of the mutation that landed under commit_id, present with committed_seq.

string
committed_seq

The sequence where this commit ID already landed, when recorded by a durable receipt.

integer format: int64
<= 9007199254740991
expected_access_revision_no

Access revision the request expected to be current.

integer format: int64
<= 9007199254740991
expected_attributes_revision_no

Attribute revision the request expected to be current.

integer format: int64
<= 9007199254740991
expected_binding_version

Opaque binding token supplied by the request.

string
/^[0-9a-f]+$/
expected_deletion_seq

Deletion sequence the undelete expected to be active.

integer format: int64
<= 9007199254740991
expected_head_seq

The head sequence required by the request.

integer format: int64
<= 9007199254740991
expected_inode_id

The request expected the path to contain this inode.

string
/^ino_[1-9][0-9]*$/
Example
ino_123
expected_revision_no

Revision the request expected to be current.

integer format: int64
<= 9007199254740991
fenced_writer_epoch

Epoch the failing writer session held when it was displaced.

integer format: int64
<= 9007199254740991
inode_id

Inode the failed precondition or operation targeted.

string
/^ino_[1-9][0-9]*$/
Example
ino_123
max_writer_sessions

Maximum writer sessions admitted by the node.

integer
namespace_id

The deleted namespace that caused the operation to fail.

string
/^[a-z0-9][a-z0-9._-]{0,127}$/
Example
demo
operation_index

The index of the failed operation in the request.

integer format: int32
precondition_index

Zero-based position of the failed request precondition.

integer format: int32
retention_floor_seq

Oldest sequence still promised for incremental replay.

integer format: int64
<= 9007199254740991
feature

The capability feature key for a not_supported error.

string
message
required

Human-readable error message.

string
param

The invalid JSON Pointer, parameter name, CLI flag, or CLI argument.

string
request_id

The request correlation ID also sent in the x-request-id response header.

string

Direct download is unsupported

HTTP error body used by LoonFS APIs.

object
code
required

The stable machine-readable error code as a string.

string
details

The optional machine-readable context for the error code.

object
active_acquired_at_ms

The Unix-millisecond time when the current writer acquired its epoch, when available.

integer format: int64
active_writer_epoch

Epoch that currently owns the namespace.

integer format: int64
<= 9007199254740991
active_writer_id

The writer ID recorded for the current epoch, when available.

string
actual_access_revision_no

Access revision that is actually current for the inode.

integer format: int64
<= 9007199254740991
actual_attributes_revision_no

Attribute revision that is actually current for the inode.

integer format: int64
<= 9007199254740991
actual_binding_version

Current binding token; absent for the root, which has no binding.

string
/^[0-9a-f]+$/
actual_deletion_seq

Deletion sequence actually active for the inode.

integer format: int64
<= 9007199254740991
actual_head_seq

The actual namespace head sequence.

integer format: int64
<= 9007199254740991
actual_inode_id

The path actually contained this inode.

string
/^ino_[1-9][0-9]*$/
Example
ino_123
actual_revision_no

Revision that is actually current; absent when the inode has none.

integer format: int64
<= 9007199254740991
after_seq

Change-feed cursor the request asked to resume after.

integer format: int64
<= 9007199254740991
commit_id

Idempotency key of the commit the error concerns.

string
/^[a-z0-9][a-z0-9._-]{0,127}$/
Example
c_f3a9c2d4b6e8417a90c5d2f8e1b7a6c0
committed_fingerprint

The fingerprint of the mutation that landed under commit_id, present with committed_seq.

string
committed_seq

The sequence where this commit ID already landed, when recorded by a durable receipt.

integer format: int64
<= 9007199254740991
expected_access_revision_no

Access revision the request expected to be current.

integer format: int64
<= 9007199254740991
expected_attributes_revision_no

Attribute revision the request expected to be current.

integer format: int64
<= 9007199254740991
expected_binding_version

Opaque binding token supplied by the request.

string
/^[0-9a-f]+$/
expected_deletion_seq

Deletion sequence the undelete expected to be active.

integer format: int64
<= 9007199254740991
expected_head_seq

The head sequence required by the request.

integer format: int64
<= 9007199254740991
expected_inode_id

The request expected the path to contain this inode.

string
/^ino_[1-9][0-9]*$/
Example
ino_123
expected_revision_no

Revision the request expected to be current.

integer format: int64
<= 9007199254740991
fenced_writer_epoch

Epoch the failing writer session held when it was displaced.

integer format: int64
<= 9007199254740991
inode_id

Inode the failed precondition or operation targeted.

string
/^ino_[1-9][0-9]*$/
Example
ino_123
max_writer_sessions

Maximum writer sessions admitted by the node.

integer
namespace_id

The deleted namespace that caused the operation to fail.

string
/^[a-z0-9][a-z0-9._-]{0,127}$/
Example
demo
operation_index

The index of the failed operation in the request.

integer format: int32
precondition_index

Zero-based position of the failed request precondition.

integer format: int32
retention_floor_seq

Oldest sequence still promised for incremental replay.

integer format: int64
<= 9007199254740991
feature

The capability feature key for a not_supported error.

string
message
required

Human-readable error message.

string
param

The invalid JSON Pointer, parameter name, CLI flag, or CLI argument.

string
request_id

The request correlation ID also sent in the x-request-id response header.

string

The server cannot complete the request now. Inspect code to determine whether the cause is a deadline, shutdown, load, writer-session admission, required maintenance, or invalid storage credentials. A mutation may still complete after a deadline or lost acknowledgment, so determine its outcome before retrying.

HTTP error body used by LoonFS APIs.

object
code
required

The stable machine-readable error code as a string.

string
details

The optional machine-readable context for the error code.

object
active_acquired_at_ms

The Unix-millisecond time when the current writer acquired its epoch, when available.

integer format: int64
active_writer_epoch

Epoch that currently owns the namespace.

integer format: int64
<= 9007199254740991
active_writer_id

The writer ID recorded for the current epoch, when available.

string
actual_access_revision_no

Access revision that is actually current for the inode.

integer format: int64
<= 9007199254740991
actual_attributes_revision_no

Attribute revision that is actually current for the inode.

integer format: int64
<= 9007199254740991
actual_binding_version

Current binding token; absent for the root, which has no binding.

string
/^[0-9a-f]+$/
actual_deletion_seq

Deletion sequence actually active for the inode.

integer format: int64
<= 9007199254740991
actual_head_seq

The actual namespace head sequence.

integer format: int64
<= 9007199254740991
actual_inode_id

The path actually contained this inode.

string
/^ino_[1-9][0-9]*$/
Example
ino_123
actual_revision_no

Revision that is actually current; absent when the inode has none.

integer format: int64
<= 9007199254740991
after_seq

Change-feed cursor the request asked to resume after.

integer format: int64
<= 9007199254740991
commit_id

Idempotency key of the commit the error concerns.

string
/^[a-z0-9][a-z0-9._-]{0,127}$/
Example
c_f3a9c2d4b6e8417a90c5d2f8e1b7a6c0
committed_fingerprint

The fingerprint of the mutation that landed under commit_id, present with committed_seq.

string
committed_seq

The sequence where this commit ID already landed, when recorded by a durable receipt.

integer format: int64
<= 9007199254740991
expected_access_revision_no

Access revision the request expected to be current.

integer format: int64
<= 9007199254740991
expected_attributes_revision_no

Attribute revision the request expected to be current.

integer format: int64
<= 9007199254740991
expected_binding_version

Opaque binding token supplied by the request.

string
/^[0-9a-f]+$/
expected_deletion_seq

Deletion sequence the undelete expected to be active.

integer format: int64
<= 9007199254740991
expected_head_seq

The head sequence required by the request.

integer format: int64
<= 9007199254740991
expected_inode_id

The request expected the path to contain this inode.

string
/^ino_[1-9][0-9]*$/
Example
ino_123
expected_revision_no

Revision the request expected to be current.

integer format: int64
<= 9007199254740991
fenced_writer_epoch

Epoch the failing writer session held when it was displaced.

integer format: int64
<= 9007199254740991
inode_id

Inode the failed precondition or operation targeted.

string
/^ino_[1-9][0-9]*$/
Example
ino_123
max_writer_sessions

Maximum writer sessions admitted by the node.

integer
namespace_id

The deleted namespace that caused the operation to fail.

string
/^[a-z0-9][a-z0-9._-]{0,127}$/
Example
demo
operation_index

The index of the failed operation in the request.

integer format: int32
precondition_index

Zero-based position of the failed request precondition.

integer format: int32
retention_floor_seq

Oldest sequence still promised for incremental replay.

integer format: int64
<= 9007199254740991
feature

The capability feature key for a not_supported error.

string
message
required

Human-readable error message.

string
param

The invalid JSON Pointer, parameter name, CLI flag, or CLI argument.

string
request_id

The request correlation ID also sent in the x-request-id response header.

string