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This implements a new extent field bitflags that apply to the whole
extent. There's been a couple things we've wanted this for in the past,
but the immediate need is extent poisoning, to solve a rebalance issue.
Unknown extent fields can't be parsed (we won't known their size, so we
can't advance to the next field), so this is an incompat feature, and
using it prevents the filesystem from being mounted by old versions.
This also adds the BCH_EXTENT_poisoned flag; this indicates that the
data is known to be bad (i.e. there was a checksum error, and we had to
write a new checksum) and reads will return errors.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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- Add more io path options to bch_extent_rebalance
- For each option, track whether it came from the filesystem or the
inode
This will be used for improved rebalance support for reflinked data.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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New helper to simplify bch2_bkey_set_needs_rebalance()
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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