Struct DevItem

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#[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.

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§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§

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impl AsBytes for DevItem

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

Get the bytes of this value. Read more
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fn as_bytes_mut(&mut self) -> &mut [u8]
where Self: FromBytes,

Get the bytes of this value mutably. Read more
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impl Clone for DevItem

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fn clone(&self) -> DevItem

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for DevItem

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

Formats the value using the given formatter. Read more
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impl Copy for DevItem

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impl FromBytes for DevItem

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impl Unaligned for DevItem

Auto Trait Implementations§

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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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
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

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

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

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.