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fa85c47397
When reshaping existing stripes, we should keep them on the same target that they were allocated on; to do this, we need to add a field to the btree stripe type. This is a tad awkward, because we only have 8 bits left, and targets are 16 bits - but we only need to store a label, not a full target. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
27 lines
565 B
C
27 lines
565 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _BCACHEFS_EC_FORMAT_H
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#define _BCACHEFS_EC_FORMAT_H
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struct bch_stripe {
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struct bch_val v;
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__le16 sectors;
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__u8 algorithm;
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__u8 nr_blocks;
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__u8 nr_redundant;
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__u8 csum_granularity_bits;
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__u8 csum_type;
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/*
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* XXX: targets should be 16 bits - fix this if we ever do a stripe_v2
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*
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* we can manage with this because this only needs to point to a
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* disk label, not a target:
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*/
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__u8 disk_label;
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struct bch_extent_ptr ptrs[];
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} __packed __aligned(8);
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#endif /* _BCACHEFS_EC_FORMAT_H */
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