Manage filesystems using the CLI

This page describes how to view and manage filesystems using the CLI.

Using the CLI, you can perform the following actions:

• View filesystems

• Create a filesystem

• Add a filesystem when thin-provisioning is used

• Edit a filesystem

• Delete a filesystem

View filesystems

Command: weka fs

Use this command to view information on the filesystems in the WEKA system.

Create a filesystem

Command: weka fs create

Use the following command line to create a filesystem:

weka fs create <name> <group-name> <total-capacity> [--ssd-capacity <ssd-capacity>] [--thin-provision-min-ssd <thin-provision-min-ssd>] [--thin-provision-max-ssd <thin-provision-max-ssd>] [--max-files <max-files>] [--encrypted] [--obs-name <obs-name>] [--auth-required <auth-required>] [--data-reduction]

Parameters

Name	Value	Default
name*	Descriptive label for the filesystem, limited to 32 characters and excluding slashes (/) or backslashes (\).	​
group-name*	Name of the filesystem group to which the new filesystem is to be connected.
total-capacity*	Total capacity of the new filesystem. Minimum value: 1GiB.
ssd-capacity	For tiered filesystems, this is the SSD capacity. If not specified, the filesystem is pinned to SSD. To set a thin provisioned filesystem, the thin-provision-min-ssd attribute must be used instead.	SSD capacity is set to total capacity
thin-provision-min-ssd	For thin-provisioned filesystems, this is the minimum SSD capacity that is ensured to be always available to this filesystem. Must be set when defining a thin-provisioned filesystem. Minimum value: 1GiB.
thin-provision-max-ssd	For thin-provisioned filesystem, this is the maximum SSD capacity the filesystem can consume. The value cannot exceed the total-capacity.
max-files	Metadata allocation for this filesystem. Automatically calculated by the system based on the SSD capacity.
encrypted	Encryption of filesystem	No
obs-name*	Object store name for tiering. Mandatory for tiered filesystems.
auth-required	Determines if mounting the filesystem requires to be authenticated to WEKA (see User management).	No
data-reduction	Enable data reduction. The filesystem must be non-tired and thin-provisioned. A license with data reduction is required.	No

When creating an encrypted filesystem a KMS must be defined.

To define an encrypted filesystem without a KMS, it is possible to use the--allow-no-kms parameter in the command. This can be useful when running POCs but should not be used in production since the security chain is compromised when a KMS is not used.

If filesystem keys exist when adding a KMS, they are automatically re-encrypted by the KMS for any future use.

Add a filesystem when thin-provisioning is used

To create a new filesystem, the SSD space for the filesystem must be free and unprovisioned. When using thin-provisioned filesystems, that might not be the case. SSD space can be occupied for the thin-provisioned portion of other filesystems. Even if those are tiered, and data can be released (to object-store) or deleted, the SSD space can still get filled when data keeps being written or promoted from the object-store.

To create a new filesystem, in this case, use the weka fs reserve CLI command. Once enough space is cleared from the SSD (either by releasing to object-store or explicitly deleting data), it is possible to create the new filesystem using the reserved space.

Edit a filesystem

Command: weka fs update

Use the following command line to edit an existing filesystem:

weka fs update <name> [--new-name=<new-name>] [--total-capacity=<total-capacity>] [--ssd-capacity=<ssd-capacity>] [--thin-provision-min-ssd <thin-provision-min-ssd>] [--thin-provision-max-ssd <thin-provision-max-ssd>] [--max-files=<max-files>] [--auth-required=<auth-required>]

Parameters

Name	Value
name*	Name of the filesystem to edit.
new-name	New name for the filesystem.
total-capacity	Total capacity of the edited filesystem.
ssd-capacity	SSD capacity of the edited filesystem. Minimum value: 1GiB.
thin-provision-min-ssd	For thin-provisioned filesystems, this is the minimum SSD capacity that is ensured to be always available to this filesystem. Minimum value: 1GiB.
thin-provision-max-ssd	For thin-proviosined filesystem, this is the maximum SSD capacity the filesystem can consume. The value must not exceed the total-capacity.
max-files	Metadata limit for the filesystem.
auth-required	Determines if mounting the filesystem requires being authenticated to WEKAka (weka user login). Possible values: yes or no.

Delete a filesystem

Command: weka fs delete

Use the following command line to delete a filesystem:

weka fs delete <name> [--purge-from-obs]

Parameters

Name	Value	Default
name*	Name of the filesystem to delete.
purge-from-obs	For a tiered filesystem, if set, all filesystem data is deleted from the object store bucket.	False

Using purge-from-obs removes all data from the object-store. This includes any backup data or snapshots created from this filesystem (if this filesystem has been downloaded from a snapshot of a different filesystem, it will leave the original snapshot data intact).

• If any of the removed snapshots have been (or are) downloaded and used by a different filesystem, that filesystem will stop functioning correctly, data might be unavailable and errors might occur when accessing the data.

It is possible to either un-tier or migrate such a filesystem to a different object store bucket before deleting the snapshots it has downloaded.