btrfs_diskformat

Struct DevItem

#[repr(C, packed(1))]
pub struct DevItem {Show 14 fields
    pub devid: U64<LE>,
    pub total_bytes: U64<LE>,
    pub bytes_used: U64<LE>,
    pub io_align: U32<LE>,
    pub io_width: U32<LE>,
    pub sector_size: U32<LE>,
    pub type: U64<LE>,
    pub generation: U64<LE>,
    pub start_offset: U64<LE>,
    pub dev_group: U32<LE>,
    pub seek_speed: u8,
    pub bandwith: u8,
    pub uuid: UuidBytes,
    pub fsid: UuidBytes,
}

Expand description

Represents a complete block device.

Fields§

§devid: U64<LE>

The internal btrfs device ID.

This should match the devid found in the filesystem’s list of devices.

§total_bytes: U64<LE>

The size of the device.

§bytes_used: U64<LE>

The bytes in use by the filesystem on the device.

§io_align: U32<LE>

The optimal I/O alignment for this device.

§io_width: U32<LE>

The optimal I/O width for this device.

§sector_size: U32<LE>

The minimum I/O size for this device.

§type: U64<LE>

The type and info for this device.

§generation: U64<LE>

The expected generation for this device.

§start_offset: U64<LE>

The starting byte of this partition on the device, to allow for stripe alignment.

§dev_group: U32<LE>

Grouping information for allocation decisions.

§seek_speed: u8

The seek speed of the device on a scale from 0 to 100, where 100 is the fastest.

§bandwith: u8

The bandwidth of the device on a scale from 0 to 100, where 100 is the fastest.

§uuid: UuidBytes

The generated UUID for this device.

§fsid: UuidBytes

The UUID of the filesystem that owns this device.

Trait Implementations§

impl AsBytes for DevItem

fn as_bytes(&self) -> &[u8]

Get the bytes of this value. Read more

fn as_bytes_mut(&mut self) -> &mut [u8]
where Self: FromBytes,

Get the bytes of this value mutably. Read more

impl Clone for DevItem

fn clone(&self) -> DevItem

Returns a copy of the value. Read more

1.0.0 · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more

impl Debug for DevItem

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

impl Copy for DevItem

impl FromBytes for DevItem

impl Unaligned for DevItem

Auto Trait Implementations§

impl Freeze for DevItem

impl RefUnwindSafe for DevItem

impl Send for DevItem

impl Sync for DevItem

impl Unpin for DevItem

impl UnwindSafe for DevItem

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> CloneToUninit for T
where T: Clone,

unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T, U> TryFrom<U> for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.