# tunable.update

Update Tunable of id.

This method is a job.

Type: object

##

Type: array
No Additional Items

#### Tuple Validation

##### Parameter 1: id

#### id

Type: integer

ID of the tunable to update.

##### Parameter 2: data

#### data

Type: object

Updated configuration for the tunable.

No Additional Properties

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#### Value

Type: string

Value to assign to the tunable parameter.

##

#### Comment

Type: string

Optional descriptive comment explaining the purpose of this tunable.

##

#### Enabled

Type: boolean

Whether this tunable is active and should be applied.

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#### Update Initramfs

Type: boolean

If `false`, then initramfs will not be updated after creating a ZFS tunable and you will need to run `system boot update_initramfs` manually.

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#### TunableEntry

Type: object

The updated tunable configuration.

No Additional Properties

##

#### Type

Type: enum (of string) Default: "SYSCTL"

- `SYSCTL`: `var` is a sysctl name (e.g. `kernel.watchdog`) and `value` is its corresponding value (e.g. `0`).
- `UDEV`: `var` is a udev rules file name (e.g. `10-disable-usb`, `.rules` suffix will be appended automatically) and `value` is its contents (e.g. `BUS=="usb", OPTIONS+="ignore_device"`).
- `ZFS`: `var` is a ZFS kernel module parameter name (e.g. `zfs_dirty_data_max_max`) and `value` is its value (e.g. `783091712`).

##### Must be one of:

- "SYSCTL"
- "UDEV"
- "ZFS"

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#### Var

Type: string

Name or identifier of the system parameter to tune.

##

#### Value

Type: string

Value to assign to the tunable parameter.

##

#### Comment

Type: string Default: ""

Optional descriptive comment explaining the purpose of this tunable.

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#### Enabled

Type: boolean Default: true

Whether this tunable is active and should be applied.

##

#### Update Initramfs

Type: boolean Default: true

If `false`, then initramfs will not be updated after creating a ZFS tunable and you will need to run `system boot update_initramfs` manually.

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#### Id

Type: integer

Unique identifier for the tunable configuration.

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#### Orig Value

Type: string

Original system value of the parameter before this tunable was applied.

Required roles: SYSTEM_TUNABLE_WRITE