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ParityRow

Struct ParityRow 

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pub struct ParityRow {
    pub data_columns: Vec<ParityDataColumn>,
    pub parity_targets: Vec<ParityTarget>,
}
Expand description

One physical row of a RAID5/RAID6 chunk that the write touches.

data_columns lists the data column slots in the row (length num_stripes - nparity). Every entry is a full stripe_len slot on a device; the executor must preread the slot, optionally overlay caller bytes, then both write the overlaid range back to the device (if the overlay is non-empty) and use the assembled slot for parity computation.

parity_targets are the parity column slots (1 entry for RAID5, 2 for RAID6). The executor writes the computed parity bytes to each target’s physical offset.

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§data_columns: Vec<ParityDataColumn>

One per data stripe of the row, in column order (data column 0 of the row first). Length equals num_stripes - nparity.

§parity_targets: Vec<ParityTarget>

Parity column outputs for the row (1 for RAID5, 2 for RAID6).

Trait Implementations§

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impl Clone for ParityRow

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fn clone(&self) -> ParityRow

Returns a duplicate 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 ParityRow

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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 PartialEq for ParityRow

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fn eq(&self, other: &ParityRow) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Eq for ParityRow

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impl StructuralPartialEq for ParityRow

Auto Trait 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> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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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.