# Functions
AddElementToMap adds to the given 'elem' to the 'sets' map with given 'key'.
GetEnvValueStrict fetches value for env variable "key".
NewStorageError creates a new custom storage error instance.
# Constants
ErrInvalidDevicePath is code when a volume/disk has invalid device path.
ErrVolAttachedOnRemoteNode is code when a volume is not attached locally but attached on a remote node.
ErrVolDetached is code for a volume is detached on the instance.
ErrVolInval is the code for a invalid volume.
ErrVolNotFound is code when a volume is not found.
ProviderOpsMaxRetries is the number of retries to use for provider ops.
ProviderOpsRetryInterval is the time to wait before each retry of provider ops.
ProviderOpsTimeout is the default timeout of storage provider ops.
SetIdentifierNone is a default identifier to group all disks from a particular set.
# Variables
ErrNotSupported is returned when a particular operation is not supported.
# Structs
StorageError error returned for storage operations.
# Interfaces
Ops interface to perform basic storage operations.