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Grow a volume online.

POST
/v1/projects/{projectId}/compute/volumes/{volumeId}/actions/resize
Code sample: Shell / cURL
curl --request POST \
--url https://stratum.example.com/v1/projects/example/compute/volumes/example/actions/resize \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data '{ "sizeBytes": 1 }'

Returns 202 Accepted; the volume transitions to resizing and the lifecycle worker grows the backend (rbd resize / lvresize), then returns it to the state it came from (available or attached) with the new sizeBytes..

An attached volume is grown with the instance running: the node hosting it tells the guest through libvirt’s block resize, so the guest sees the new capacity at once. The guest filesystem is the guest’s to grow (xfs_growfs, resize2fs); a stopped instance sees the new size at its next start.

sizeBytes must be a multiple of 1 GiB and at least the current size; a volume never shrinks. The same size is an idempotent no-op. An instance mid-migration refuses with 409 INVALID_STATE until it has landed.

projectId
required
string
/^p-[a-z0-9-]+$/
volumeId
required
string
/^vol-[a-z0-9-]+$/
Media typeapplication/json
object
sizeBytes
required

The new size in bytes — a multiple of 1 GiB, at least the current size (a volume never shrinks).

integer format: int64
>= 1073741824

Example generated

{
"sizeBytes": 1
}

Accepted; the volume is resizing.

Media typeapplication/json
object
arn

Canonical Stratum ARN for this volume, for resource-policy targeting.

string
id
required
string
/^vol-[a-z0-9-]+$/
projectId
required
string
/^p-[a-z0-9-]+$/
name
required
string
/^[a-z][a-z0-9-]{1,38}[a-z0-9]$/
displayName
required
string
>= 1 characters <= 100 characters
description
string
sizeBytes
required
integer format: int64
>= 1073741824
storageClass
required
string
driver
string
Allowed values: lvm-thin ceph-rbd
pool
string
region
required
string
availabilityZone
required
string
nodeId
string
state
required
string
Allowed values: creating available attaching attached detaching resizing snapshotting cloning deleting deleted error
stateReason

. Human-readable cause. Set when state is error (e.g. a root-volume clone whose base image never staged within the cold-start deadline: “image base unavailable”), and while deleting when the delete is BLOCKED: the volume still has snapshots (waiting for snapshots snap-… to be deleted), the backing device is still held open, or the backend returned a transient error. A blocked delete is not a failure — the volume stays deleting and the worker re-attempts it about once a minute until the blocker clears (delete the snapshots and it goes); nothing needs re-issuing. Cleared on any other transition.

string
attachedTo
string
attachmentMode
string
Allowed values: rw rwx
sourceSnapshotId
string
sourceImageId
string
tags

AWS-shape resource tags. Freeform UTF-8 keys (1-128 bytes, no leading/trailing whitespace) mapped to freeform UTF-8 values (0-256 bytes). Max 50 tags per resource. Reserved prefixes (stratum.dev/, stratum.platform_health., stratum:, aws:) return 400 RESERVED_NAMESPACE on customer input. PATCH replaces the whole map..

object
<= 50 properties
key
additional properties
string
<= 256 characters
createdAt
required
string format: date-time
updatedAt
required
string format: date-time
deletedAt
string format: date-time
nullable
createdBy
required
string
iopsLimit

The volume’s IOPS ceiling, applied as libvirt on its disk (the lower of this and the instance type’s cap wins). Omitted: the storage class default; above the class maximum: 400. Counts toward the project’s storage.io.iops quota.

integer
>= 1
throughputLimitMbps

The volume’s throughput ceiling in MB/s, like iopsLimit. Counts toward storage.io.mbps.

integer
>= 1

Example

{
"driver": "lvm-thin",
"state": "creating",
"attachmentMode": "rw"
}

Bad request.

Media typeapplication/problem+json
object
type
required
string format: uri
title
required
string
status
required
integer
>= 400 <= 599
detail
string
instance
string format: uri-reference
requestId
required
string
code
required
string
issues

The findings of a rejected IAM policy document (custom and resource policies).

Array<object>

One finding of a rejected IAM policy document. A rejection lists every finding, so the author fixes the document in one round trip.

object
code
required

The finding, e.g. INVALID_DOCUMENT, UNKNOWN_ACTION, ACTION_NOT_APPLICABLE.

string
statement
required

Index of the statement at fault; -1 for the document as a whole.

integer
>= -1
detail
required
string
action

The offending action, where one is at fault (ACTION_NOT_APPLICABLE).

string
errors

Field errors, for codes that carry them: each problem at its field (see FieldError). Documented on the responses that set it, e.g. approveNodeJoin’s INVALID_INPUT and JOIN_APPROVAL_REFUSED. Absent otherwise.

Array<object>

One field’s problem, the stage-2 installer API’s shape. field is the field’s path, message what is wrong with it.

object
field
required

The field’s path, e.g. links[0].interface, disks[1].confirm, mgmt.address or role; empty for the whole request.

string
message
required
string
details

Structured facts about the refusal, for codes that carry them. The shape is fixed per code and documented on the response that answers it, e.g. IMAGE_POOL_MISMATCH (see ImagePoolMismatchDetails) and IMAGE_IN_USE. Absent for codes that carry none.

object
key
additional properties
any

Example

{
"issues": [
{
"code": "ACTION_NOT_APPLICABLE",
"action": "compute:CreateVpc"
}
]
}

Authenticated but not authorized.

Media typeapplication/problem+json
object
type
required
string format: uri
title
required
string
status
required
integer
>= 400 <= 599
detail
string
instance
string format: uri-reference
requestId
required
string
code
required
string
issues

The findings of a rejected IAM policy document (custom and resource policies).

Array<object>

One finding of a rejected IAM policy document. A rejection lists every finding, so the author fixes the document in one round trip.

object
code
required

The finding, e.g. INVALID_DOCUMENT, UNKNOWN_ACTION, ACTION_NOT_APPLICABLE.

string
statement
required

Index of the statement at fault; -1 for the document as a whole.

integer
>= -1
detail
required
string
action

The offending action, where one is at fault (ACTION_NOT_APPLICABLE).

string
errors

Field errors, for codes that carry them: each problem at its field (see FieldError). Documented on the responses that set it, e.g. approveNodeJoin’s INVALID_INPUT and JOIN_APPROVAL_REFUSED. Absent otherwise.

Array<object>

One field’s problem, the stage-2 installer API’s shape. field is the field’s path, message what is wrong with it.

object
field
required

The field’s path, e.g. links[0].interface, disks[1].confirm, mgmt.address or role; empty for the whole request.

string
message
required
string
details

Structured facts about the refusal, for codes that carry them. The shape is fixed per code and documented on the response that answers it, e.g. IMAGE_POOL_MISMATCH (see ImagePoolMismatchDetails) and IMAGE_IN_USE. Absent for codes that carry none.

object
key
additional properties
any

Example

{
"issues": [
{
"code": "ACTION_NOT_APPLICABLE",
"action": "compute:CreateVpc"
}
]
}

Resource not found.

Media typeapplication/problem+json
object
type
required
string format: uri
title
required
string
status
required
integer
>= 400 <= 599
detail
string
instance
string format: uri-reference
requestId
required
string
code
required
string
issues

The findings of a rejected IAM policy document (custom and resource policies).

Array<object>

One finding of a rejected IAM policy document. A rejection lists every finding, so the author fixes the document in one round trip.

object
code
required

The finding, e.g. INVALID_DOCUMENT, UNKNOWN_ACTION, ACTION_NOT_APPLICABLE.

string
statement
required

Index of the statement at fault; -1 for the document as a whole.

integer
>= -1
detail
required
string
action

The offending action, where one is at fault (ACTION_NOT_APPLICABLE).

string
errors

Field errors, for codes that carry them: each problem at its field (see FieldError). Documented on the responses that set it, e.g. approveNodeJoin’s INVALID_INPUT and JOIN_APPROVAL_REFUSED. Absent otherwise.

Array<object>

One field’s problem, the stage-2 installer API’s shape. field is the field’s path, message what is wrong with it.

object
field
required

The field’s path, e.g. links[0].interface, disks[1].confirm, mgmt.address or role; empty for the whole request.

string
message
required
string
details

Structured facts about the refusal, for codes that carry them. The shape is fixed per code and documented on the response that answers it, e.g. IMAGE_POOL_MISMATCH (see ImagePoolMismatchDetails) and IMAGE_IN_USE. Absent for codes that carry none.

object
key
additional properties
any

Example

{
"issues": [
{
"code": "ACTION_NOT_APPLICABLE",
"action": "compute:CreateVpc"
}
]
}

Conflict: the volume is in a state that cannot be resized (INVALID_STATE — creating, detaching, snapshotting, deleting, error, or already resizing to another size), or its instance is migrating.

Media typeapplication/problem+json
object
type
required
string format: uri
title
required
string
status
required
integer
>= 400 <= 599
detail
string
instance
string format: uri-reference
requestId
required
string
code
required
string
issues

The findings of a rejected IAM policy document (custom and resource policies).

Array<object>

One finding of a rejected IAM policy document. A rejection lists every finding, so the author fixes the document in one round trip.

object
code
required

The finding, e.g. INVALID_DOCUMENT, UNKNOWN_ACTION, ACTION_NOT_APPLICABLE.

string
statement
required

Index of the statement at fault; -1 for the document as a whole.

integer
>= -1
detail
required
string
action

The offending action, where one is at fault (ACTION_NOT_APPLICABLE).

string
errors

Field errors, for codes that carry them: each problem at its field (see FieldError). Documented on the responses that set it, e.g. approveNodeJoin’s INVALID_INPUT and JOIN_APPROVAL_REFUSED. Absent otherwise.

Array<object>

One field’s problem, the stage-2 installer API’s shape. field is the field’s path, message what is wrong with it.

object
field
required

The field’s path, e.g. links[0].interface, disks[1].confirm, mgmt.address or role; empty for the whole request.

string
message
required
string
details

Structured facts about the refusal, for codes that carry them. The shape is fixed per code and documented on the response that answers it, e.g. IMAGE_POOL_MISMATCH (see ImagePoolMismatchDetails) and IMAGE_IN_USE. Absent for codes that carry none.

object
key
additional properties
any

Example

{
"issues": [
{
"code": "ACTION_NOT_APPLICABLE",
"action": "compute:CreateVpc"
}
]
}

QUOTA_EXCEEDED: the project’s storage.volumes.bytes would pass its limit. The grow is reserved when it is asked for.

Media typeapplication/problem+json
object
type
required
string format: uri
title
required
string
status
required
integer
>= 400 <= 599
detail
string
instance
string format: uri-reference
requestId
required
string
code
required
string
issues

The findings of a rejected IAM policy document (custom and resource policies).

Array<object>

One finding of a rejected IAM policy document. A rejection lists every finding, so the author fixes the document in one round trip.

object
code
required

The finding, e.g. INVALID_DOCUMENT, UNKNOWN_ACTION, ACTION_NOT_APPLICABLE.

string
statement
required

Index of the statement at fault; -1 for the document as a whole.

integer
>= -1
detail
required
string
action

The offending action, where one is at fault (ACTION_NOT_APPLICABLE).

string
errors

Field errors, for codes that carry them: each problem at its field (see FieldError). Documented on the responses that set it, e.g. approveNodeJoin’s INVALID_INPUT and JOIN_APPROVAL_REFUSED. Absent otherwise.

Array<object>

One field’s problem, the stage-2 installer API’s shape. field is the field’s path, message what is wrong with it.

object
field
required

The field’s path, e.g. links[0].interface, disks[1].confirm, mgmt.address or role; empty for the whole request.

string
message
required
string
details

Structured facts about the refusal, for codes that carry them. The shape is fixed per code and documented on the response that answers it, e.g. IMAGE_POOL_MISMATCH (see ImagePoolMismatchDetails) and IMAGE_IN_USE. Absent for codes that carry none.

object
key
additional properties
any

Example

{
"issues": [
{
"code": "ACTION_NOT_APPLICABLE",
"action": "compute:CreateVpc"
}
]
}