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various recovery fixes:
- fixes for the btree_insert_entry being resized on path allocation
btree_path array recently became dynamically resizable, and
btree_insert_entry along with it; this was being observed during
journal replay, when write buffer btree updates don't use the write
buffer and instead use the normal btree update path
- multiple fixes for deadlock in recovery when we need to do lots of
btree node merges; excessive merges were clocking up the whole
pipeline
- write buffer path now correctly does btree node merges when needed
- fix failure to go RW when superblock indicates recovery passes needed
(i.e. to complete an unfinished upgrade)
various unsafety fixes - test case contributed by a user who had two
drives out of a six drive array write out a whole bunch of garbage after
power failure
new (tiny) on disk format feature: since it appears the btree node scan
tool will be a more regular thing (crappy hardware, user error) - this
adds a 64 bit per-device bitmap of regions that have ever had btree
nodes.
a path->should_be_locked fix, from a larger patch series tightening up
invariants and assertions around btree transaction and path locking
state; this particular fix prevents us from keeping around btree_paths
that are no longer needed.
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Merge tag 'bcachefs-2024-04-15' of https://evilpiepirate.org/git/bcachefs
Pull yet more bcachefs fixes from Kent Overstreet:
"This gets recovery working again for the affected user I've been
working with, and I'm still waiting to hear back on other bug reports
but should fix it for everyone else who's been having issues with
recovery.
- Various recovery fixes:
- fixes for the btree_insert_entry being resized on path
allocation btree_path array recently became dynamically
resizable, and btree_insert_entry along with it; this was being
observed during journal replay, when write buffer btree updates
don't use the write buffer and instead use the normal btree
update path
- multiple fixes for deadlock in recovery when we need to do lots
of btree node merges; excessive merges were clocking up the
whole pipeline
- write buffer path now correctly does btree node merges when
needed
- fix failure to go RW when superblock indicates recovery passes
needed (i.e. to complete an unfinished upgrade)
- Various unsafety fixes - test case contributed by a user who had
two drives out of a six drive array write out a whole bunch of
garbage after power failure
- New (tiny) on disk format feature: since it appears the btree node
scan tool will be a more regular thing (crappy hardware, user
error) - this adds a 64 bit per-device bitmap of regions that have
ever had btree nodes.
- A path->should_be_locked fix, from a larger patch series tightening
up invariants and assertions around btree transaction and path
locking state.
This particular fix prevents us from keeping around btree_paths
that are no longer needed"
* tag 'bcachefs-2024-04-15' of https://evilpiepirate.org/git/bcachefs: (24 commits)
bcachefs: set_btree_iter_dontneed also clears should_be_locked
bcachefs: fix error path of __bch2_read_super()
bcachefs: Check for backpointer bucket_offset >= bucket size
bcachefs: bch_member.btree_allocated_bitmap
bcachefs: sysfs internal/trigger_journal_flush
bcachefs: Fix bch2_btree_node_fill() for !path
bcachefs: add safety checks in bch2_btree_node_fill()
bcachefs: Interior known are required to have known key types
bcachefs: add missing bounds check in __bch2_bkey_val_invalid()
bcachefs: Fix btree node merging on write buffer btrees
bcachefs: Disable merges from interior update path
bcachefs: Run merges at BCH_WATERMARK_btree
bcachefs: Fix missing write refs in fs fio paths
bcachefs: Fix deadlock in journal replay
bcachefs: Go rw if running any explicit recovery passes
bcachefs: Standardize helpers for printing enum strs with bounds checks
bcachefs: don't queue btree nodes for rewrites during scan
bcachefs: fix race in bch2_btree_node_evict()
bcachefs: fix unsafety in bch2_stripe_to_text()
bcachefs: fix unsafety in bch2_extent_ptr_to_text()
...
cef27048e5