Type Alias Mutation 

pub type Mutation = MutationV56;

The journal consists of these records which will be replayed at mount time. Within a transaction, these are stored as a set which allows some mutations to be deduplicated and found (and we require custom comparison functions below). For example, we need to be able to find object size changes.

Aliased Type

pub enum Mutation {
    ObjectStore(ObjectStoreMutationV56),
    EncryptedObjectStore(Box<[u8]>),
    Allocator(AllocatorMutationV32),
    BeginFlush,
    EndFlush,
    DeleteVolume,
    UpdateBorrowed(u64),
    UpdateMutationsKey(UpdateMutationsKeyV49),
    CreateInternalDir(u64),
}

Variants

ObjectStore(ObjectStoreMutationV56)

EncryptedObjectStore(Box<[u8]>)

Allocator(AllocatorMutationV32)

BeginFlush

Indicates the beginning of a flush. This would typically involve sealing a tree.

EndFlush

Indicates the end of a flush. This would typically involve replacing the immutable layers with compacted ones.

DeleteVolume

Volume has been deleted. Requires we remove it from the set of managed ObjectStore.

UpdateBorrowed(u64)

UpdateMutationsKey(UpdateMutationsKeyV49)

CreateInternalDir(u64)

Implementations

impl Mutation

pub fn insert_object(key: ObjectKey, value: ObjectValue) -> Self

pub fn replace_or_insert_object(key: ObjectKey, value: ObjectValue) -> Self

pub fn merge_object(key: ObjectKey, value: ObjectValue) -> Self

pub fn update_mutations_key(key: FxfsKey) -> Self