parity_repair.h File Reference

#include "layout/pdclust.h"
#include "fid/fid.h"
#include "pool/pool.h"

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Macros
#define	__MOTR_SNS_PARITY_REPAIR_H__

Functions
M0_INTERNAL int	m0_sns_repair_spare_map (struct m0_poolmach *pm, const struct m0_fid *fid, struct m0_pdclust_layout *pl, struct m0_pdclust_instance *pi, uint64_t group_number, uint64_t unit_number, uint32_t *spare_slot_out, uint32_t *spare_slot_out_prev)
M0_INTERNAL int	m0_sns_repair_spare_rebalancing (struct m0_poolmach *pm, const struct m0_fid *fid, struct m0_pdclust_layout *pl, struct m0_pdclust_instance *pi, uint64_t group, uint64_t unit, uint32_t *spare_slot_out, uint32_t *spare_slot_out_prev)
M0_INTERNAL int	m0_sns_repair_data_map (struct m0_poolmach *pm, struct m0_pdclust_layout *pl, struct m0_pdclust_instance *pi, uint64_t group_number, uint64_t spare_unit_number, uint64_t *data_unit_id_out)

Macro Definition Documentation

__MOTR_SNS_PARITY_REPAIR_H__

#define __MOTR_SNS_PARITY_REPAIR_H__

Definition at line 25 of file parity_repair.h.

Function Documentation

m0_sns_repair_data_map()

M0_INTERNAL int m0_sns_repair_data_map	(	struct m0_poolmach *	pm,
		struct m0_pdclust_layout *	pl,
		struct m0_pdclust_instance *	pi,
		uint64_t	group_number,
		uint64_t	spare_unit_number,
		uint64_t *	data_unit_id_out
	)

Map the {spare slot, data/parity unit id} pair after repair.

Parameters

pm	pool machine.
fid	Global file id.
pl	pdclust layout instance.
group_number	Parity group number for a given file.
unit_number	Spare unit number in the parity group.
data_unit_id_out	the output data unit index.

Definition at line 192 of file parity_repair.c.

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m0_sns_repair_spare_map()

M0_INTERNAL int m0_sns_repair_spare_map	(	struct m0_poolmach *	pm,
		const struct m0_fid *	fid,
		struct m0_pdclust_layout *	pl,
		struct m0_pdclust_instance *	pi,
		uint64_t	group_number,
		uint64_t	unit_number,
		uint32_t *	spare_slot_out,
		uint32_t *	spare_slot_out_prev
	)

Map the {failed device, spare slot} pair of a specified device.

Parameters

pm	pool machine.
fid	Global file id.
pl	pdclust layout instance.
group_number	Parity group number for a given file.
unit_number	Unit number in the parity group.
spare_slot_out	the output spare slot.
spare_slot_out_prev	the previous spare slot (in case of cascaded failures) Contains unit number in case of single failure.

Definition at line 103 of file parity_repair.c.

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m0_sns_repair_spare_rebalancing()

M0_INTERNAL int m0_sns_repair_spare_rebalancing	(	struct m0_poolmach *	pm,
		const struct m0_fid *	fid,
		struct m0_pdclust_layout *	pl,
		struct m0_pdclust_instance *	pi,
		uint64_t	group,
		uint64_t	unit,
		uint32_t *	spare_slot_out,
		uint32_t *	spare_slot_out_prev
	)

Definition at line 115 of file parity_repair.c.

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