Kent Overstreet [Wed, 28 May 2025 19:08:19 +0000 (15:08 -0400)]
bcachefs: bch2_get_snapshot_overwrites()
New helper for getting a list of snapshot IDs that have overwritten a
given key.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Wed, 28 May 2025 18:26:33 +0000 (14:26 -0400)]
bcachefs: bch2_dev_journal_bucket_delete()
Recover from "journal and btree in same bucket".
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Wed, 28 May 2025 02:20:27 +0000 (22:20 -0400)]
bcachefs: Runtime self healing for keys for deleted snapshots
If snapshot deletion incorrectly missing some keys and leaves keys for
deleted snapshots, that causes a bit of a problem for data move - we
can't move an extent for a nonexistent snapshot, because the extent
might have to be fragmented, and maintaining correct visibility in child
snapshots doesn't work if it doesn't have a snapshot.
Previously we'd just skip these keys, but it turns out that causes
copygc to spin.
So we need runtime self healing, i.e. calling check_key_has_snapshot()
from the data move path.
Snapshot deletion v2 included sentinal values for deleted snapshot
nodes, so this is quite safe.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Wed, 28 May 2025 20:06:07 +0000 (16:06 -0400)]
bcachefs: Don't unlock trans before data_update_init()
data_update_init() does need to do btree operations, delay doing the
unlock-before-io.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Wed, 28 May 2025 15:31:51 +0000 (11:31 -0400)]
bcachefs: Use bch2_err_matches() for BCH_ERR_fsck_(fix|ignore)
We'll be adding subtypes of these errors, and new error code tracing.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Wed, 28 May 2025 15:27:59 +0000 (11:27 -0400)]
bcachefs: Mark bch_errcode helpers __attribute__((const))
These don't access global memory or defer pointer arguments - this
enables CSE optimizations.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Thu, 29 May 2025 19:02:37 +0000 (15:02 -0400)]
bcachefs: Add missing printbuf_reset() in bch2_check_dirent_inode_dirent()
We were accidentally including the contents from the previous
fsck_err().
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Wed, 28 May 2025 05:00:34 +0000 (01:00 -0400)]
bcachefs: sysfs/errors
Make the superblock error counters available in sysfs; the only other
way they can be seen is 'show-super', but we don't write the superblock
every time the error count gets incremented.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Wed, 28 May 2025 00:51:00 +0000 (20:51 -0400)]
bcachefs: bch2_check_fix_ptrs() can now repair btree roots
This is straightforward enough: check_fix_ptrs() currently only runs
before we go RW, so updating the btree root pointer in c->btree_roots
suffices - it'll be written out in the first journal write we do.
For that, do_bch2_trans_commit_to_journal_replay() now handles
JSET_ENTRY_btree_root entries.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Tue, 27 May 2025 18:39:43 +0000 (14:39 -0400)]
bcachefs: Include b->ob.nr in cached_btree_node_to_text()
We have a bug report that looks like we might be leaking open buckets -
let's check if they got left attached to the cached btree node.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Mon, 26 May 2025 21:03:48 +0000 (17:03 -0400)]
bcachefs: Move devs_sorted to alloc_request
More stack usage work.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Mon, 26 May 2025 21:15:11 +0000 (17:15 -0400)]
bcachefs: reduce stack usage in alloc_sectors_start()
with typical config options, variables in different inline functions
aren't sharing stack space - and these are slowpaths.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Mon, 26 May 2025 18:24:19 +0000 (14:24 -0400)]
bcachefs: bch2_alloc_v4_to_text()
Specialize the .to_text() for alloc_v4, to avoid the temporary on the
stack for conversion from old versions.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Mon, 26 May 2025 17:26:10 +0000 (13:26 -0400)]
bcachefs: Tweak bch2_data_update_init() for stack usage
- Separate out a slowpath for bkey_nocow_lock()
- Don't call bch2_bkey_ptrs_c() or loop over pointers more than
necessary
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Mon, 26 May 2025 18:15:28 +0000 (14:15 -0400)]
bcachefs: kill replicas_sectors arg to __trigger_extent()
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Mon, 26 May 2025 20:16:17 +0000 (16:16 -0400)]
bcachefs: Don't stack allocate bch_writepage_state
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Mon, 26 May 2025 20:29:56 +0000 (16:29 -0400)]
bcachefs: factor out break_cycle_fail()
More stack usage work.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Mon, 26 May 2025 16:48:19 +0000 (12:48 -0400)]
bcachefs: btree_node_missing_err()
Factor out an error path for a small stack usage improvement.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Sun, 25 May 2025 21:56:45 +0000 (17:56 -0400)]
bcachefs: Kill bkey_buf in btree_path_down()
Allocate some (smaller) temporary storage in btree_trans for this -
btree_path_down() is in our max-stack call stack.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Wed, 28 May 2025 00:37:21 +0000 (20:37 -0400)]
bcachefs: Add missing error logging in delete_dead_inodes()
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Wed, 28 May 2025 02:06:04 +0000 (22:06 -0400)]
bcachefs: Fix misaligned bucket check in journal space calculations
Fix an assertion pop in the tiering_misaligned test: rounding down to
bucket size at the end of the journal space calculations leaves
cur_entry_sectors == 0, which is incorrect with !cur_entry_err.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Wed, 28 May 2025 00:37:50 +0000 (20:37 -0400)]
bcachefs: Fix incorrect multiple dev check in journal write path
It's uncomon to have multiple devices with journalling only on a subset,
but can be specified with the 'data_allowed' option. We need to know if
we're doing data/metadata writes to multiple devices, as that requires
issuing flushes before the journal writes.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Wed, 28 May 2025 01:45:56 +0000 (21:45 -0400)]
bcachefs: Catch data_update_done events in trace_io_move_start_fail
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Wed, 28 May 2025 01:54:22 +0000 (21:54 -0400)]
bcachefs: io_move_evacuate_bucket tracepoint, counter
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Tue, 27 May 2025 03:00:21 +0000 (23:00 -0400)]
bcachefs: trace_io_move_pred
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Sun, 25 May 2025 21:04:11 +0000 (17:04 -0400)]
bcachefs: Fix infinite loop in journal_entry_btree_keys_to_text()
Fix an infinite loop when bkey_i->k.u64s is 0.
This only happens in userspace, where 'bcachefs list_journal' can print
the entire contents of the journal, and non-dirty entries aren't
validated.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Mon, 26 May 2025 16:21:57 +0000 (12:21 -0400)]
bcachefs: Journal read error message improvements
- Don't print a checksum error when we first read a journal entry: we
print a checksum error later if we'll be using the journal entry.
- Continuing with the theme of of improving error messages and grouping
errors into a single log message per error, print a single 'checksum
error' message per journal entry, and use bch2_journal_ptr_to_text()
to print out where on the device it was.
- Factor out checksum error messages and checking for missing journal
entries into helpers, bch2_journal_read() has gotten obnoxiously big.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Mon, 26 May 2025 15:12:53 +0000 (11:12 -0400)]
bcachefs: Don't rewind to run a recovery pass we already ran
Fix a small regression from the "run recovery passes" rewrite, which
enabled async recovery passes.
This fixes getting stuck in a loop in recovery.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Sun, 25 May 2025 15:51:33 +0000 (11:51 -0400)]
bcachefs: Move unicode message to after the startup message
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Sat, 24 May 2025 23:53:03 +0000 (19:53 -0400)]
bcachefs: Fix missing commit in check_dirents
Other repair code seems to be doing commits themselves, but
check_key_has_snapshot() does not.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Sat, 24 May 2025 19:29:50 +0000 (15:29 -0400)]
bcachefs: Fix lost rebalance wakeups
Fix a missing wakeup in
'bcachefs set-file-option' -> xattr option update -> inode_write
this was missing because the wakeup needs to happen after transaction
commit. Also, add a 'kick' counter, to make sure we don't miss a wakeup
that occured right after we finished checking the rebalance_work btree.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Sat, 24 May 2025 19:24:00 +0000 (15:24 -0400)]
bcachefs: bch2_kthread_io_clock_wait_once()
Add a version of bch2_kthread_io_clock_wait() that only schedules once -
behaving more like schedule_timeout().
This will be used for fixing rebalance wakeups.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Sat, 24 May 2025 18:37:20 +0000 (14:37 -0400)]
bcachefs: Ensure we print output of run_recovery_pass if it errors
Also, don't error out in bucket_ref_update_err(): we don't want to
return -BCH_ERR_cannot_rewind_recovery if it's not an insert, if it's an
overwrite we continue.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Sat, 24 May 2025 18:20:58 +0000 (14:20 -0400)]
bcachefs: Fix missing BTREE_UPDATE_internal_snapshot_node
Repair code will do updates on older snapshot versions, so needs the
correct annotation.
Reported-by: syzbot+42581416dba62b364750@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Sat, 24 May 2025 05:56:10 +0000 (01:56 -0400)]
bcachefs: fix REFLINK_P_MAY_UPDATE_OPTIONS
If we're doing a reflink copy of existing reflinked data, we may only
set REFLINK_P_MAY_UPDATE_OPTIONS if it was set on the reflink pointer
we're copying from.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Sat, 24 May 2025 01:59:12 +0000 (21:59 -0400)]
bcachefs: Don't mount bs > ps without TRANSPARENT_HUGEPAGE
Large folios aren't supported without TRANSPARENT_HUGEPAGE
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Sat, 24 May 2025 00:11:43 +0000 (20:11 -0400)]
bcachefs: Fix btree_iter_next_node() for new locking asserts
We can't unlock a should_be_locked path unless we're in a transaction
restart.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Fri, 23 May 2025 18:03:06 +0000 (14:03 -0400)]
bcachefs: Ensure we don't use a blacklisted journal seq
Different versions differ on the size of the blacklist range; it is
theoretically possible that we could end up with blacklisted journal
sequence numbers newer than the newest seq we find in the journal, and
pick a new start seq that's blacklisted.
Explicitly check for this in bch2_fs_journal_start().
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Fri, 23 May 2025 18:19:25 +0000 (14:19 -0400)]
bcachefs: Small check_fix_ptr fixes
We don't want to change the bucket gen, on gen mismatch: it's possible
to have multiple btree nodes with different gens in the same bucket that
we want to keep, if we have to recover from btree node scan.
It's also not necessary to set g->gen_valid; add a comment to that
effect.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Fri, 23 May 2025 22:31:53 +0000 (18:31 -0400)]
bcachefs: Fix opts.recovery_pass_last
This was lost in the giant recovery pass rework - but it's used heavily
by bcachefs subcommand utilities.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Fri, 23 May 2025 22:30:10 +0000 (18:30 -0400)]
bcachefs: Fix allocate -> self healing path
When we go to allocate and find taht a bucket in the freespace btree is
actually allocated, we're supposed to return nonzero to tell the
allocator to skip it.
This fixes an emergency read only due to a bucket/ptr gen mismatch - we
also don't return the correct bucket gen when this happens.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Fri, 23 May 2025 17:13:44 +0000 (13:13 -0400)]
bcachefs: Fix endianness in casefold check/repair
Fixes:
010c89468134 ("bcachefs: Check for casefolded dirents in non casefolded dirs")
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Wed, 10 Apr 2024 03:53:57 +0000 (23:53 -0400)]
bcachefs: Path must be locked if trans->locked && should_be_locked
If path->should_be_locked is true, that means user code (of the btree
API) has seen, in this transaction, something guarded by the node this
path has locked, and we have to keep it locked until the end of the
transaction.
Assert that we're not violating this; should_be_locked should also be
cleared only in _very_ special situations.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Thu, 22 May 2025 19:52:15 +0000 (15:52 -0400)]
bcachefs: Simplify bch2_path_put()
Simplify the "do we need to keep this locked?" checks.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Thu, 22 May 2025 19:33:14 +0000 (15:33 -0400)]
bcachefs: Plumb btree_trans for more locking asserts
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Thu, 22 May 2025 20:04:15 +0000 (16:04 -0400)]
bcachefs: Clear trans->locked before unlock
We're adding new should_be_locked assertions: it's going to be illegal
to unlock a should_be_locked path when trans->locked is true.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Thu, 22 May 2025 20:03:08 +0000 (16:03 -0400)]
bcachefs: Clear should_be_locked before unlock in key_cache_drop()
We're adding new should_be_locked assertions, also add a comment
explaining why clearing should_be_locked is safe here.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Thu, 22 May 2025 22:12:54 +0000 (18:12 -0400)]
bcachefs: bch2_path_get() reuses paths if upgrade_fails & !should_be_locked
Small additional optimization over the previous patch, bringing us
closer to the original behaviour, except when we need to clone to avoid
a transaction restart.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Thu, 22 May 2025 22:00:45 +0000 (18:00 -0400)]
bcachefs: Give out new path if upgrade fails
Avoid transaction restarts due to failure to upgrade - we can traverse a
new iterator without a transaction restart.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Thu, 22 May 2025 20:54:31 +0000 (16:54 -0400)]
bcachefs: Fix btree_path_get_locks when not doing trans restart
btree_path_get_locks, on failure, shouldn't unlock if we're not issuing
a transaction restart: we might drop locks we're not supposed to (if
path->should_be_locked is set).
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Thu, 22 May 2025 22:03:32 +0000 (18:03 -0400)]
bcachefs: btree_node_locked_type_nowrite()
Small helper to improve locking assertions.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Thu, 22 May 2025 19:40:24 +0000 (15:40 -0400)]
bcachefs: Kill bch2_path_put_nokeep()
bch2_path_put_nokeep() was intended for paths we wouldn't need to
preserve for a transaction restart - it always frees them right away
when the ref hits 0.
But since paths are shared, freeing unconditionally is a bug, the path
might have been used elsewhere and have should_be_locked set, i.e. we
need to keep it locked until the end of the transaction.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Wed, 7 May 2025 01:54:35 +0000 (21:54 -0400)]
bcachefs: bch2_journal_write_checksum()
We need to delay checksumming the journal write; we don't know the
blocksize until after we allocate the write.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Thu, 22 May 2025 16:50:22 +0000 (12:50 -0400)]
bcachefs: Reduce stack usage in data_update_index_update()
Separate tracepoint message generation and other slowpath code into
non-inline functions, and use bch2_trans_log_str() instead of using a
printbuf for our journal message.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Thu, 22 May 2025 16:49:56 +0000 (12:49 -0400)]
bcachefs: bch2_trans_log_str()
The data update path doesn't need a printbuf for its log message - this
will help reduce stack usage.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Thu, 22 May 2025 16:34:40 +0000 (12:34 -0400)]
bcachefs: Kill bkey_buf usage in data_update_index_update()
Reduce stack usage - bkey_buf has a 96 byte buffer on the stack, but the
btree_trans bump allocator works just fine here.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Wed, 21 May 2025 19:54:56 +0000 (15:54 -0400)]
bcachefs: Drop empty accounting updates
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Wed, 21 May 2025 07:19:18 +0000 (03:19 -0400)]
bcachefs: Improve trace_trans_restart_upgrade
- Convert to a 'fs_str' tracepoint that just emits as a string: this
lets us build up the tracepoint with a printbuf, using our pretty
printers, and they're much easier to manage
- Include locks_held, before and after
- Include the btree node pointer we failed on (error pointer, null, or
real node)
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Wed, 21 May 2025 02:59:58 +0000 (22:59 -0400)]
bcachefs: fix bch2_inum_snapshot_to_path()
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Wed, 21 May 2025 00:15:39 +0000 (20:15 -0400)]
bcachefs: fix duplicate printk
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Mon, 19 May 2025 14:31:44 +0000 (10:31 -0400)]
bcachefs: BCH_INODE_has_case_insensitive
Add a flag for tracking whether a directory has case-insensitive
descendents - so that overlayfs can disallow mounting, even though the
filesystem supports case insensitivity.
This is a new on disk format version, with a (cheap) upgrade to ensure
the flag is correctly set on existing inodes.
Create, rename and fssetxattr are all plumbed to ensure the new flag is
set, and we've got new fsck code that hooks into check_inode(0.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Mon, 19 May 2025 14:10:19 +0000 (10:10 -0400)]
bcachefs: bch2_inode_find_by_inum_snapshot()
Move a fsck.c helper into inode.c, eliminate some duplicate and organize
the inode lookup helpers.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Mon, 19 May 2025 13:48:50 +0000 (09:48 -0400)]
bcachefs: bch2_inum_snapshot_to_path()
Add a better helper for printing out paths of inodes when we don't know
the subvolume, for fsck.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Mon, 19 May 2025 13:17:39 +0000 (09:17 -0400)]
bcachefs: bch2_rename_trans() only runs rename-to-dir code if needed
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Mon, 19 May 2025 13:12:49 +0000 (09:12 -0400)]
bcachefs: subvol_inum_eq()
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Mon, 19 May 2025 13:15:31 +0000 (09:15 -0400)]
bcachefs: Don't set bi_casefold on non directories
bi_casefold only makes sense for directories, and since it's one of the
variable length fields setting it unnecessarily wastes space.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Alan Huang [Mon, 19 May 2025 11:51:04 +0000 (19:51 +0800)]
bcachefs: Remove duplicate call to bch2_trans_begin()
There is one in for_each_btree_key_max().
Signed-off-by: Alan Huang <mmpgouride@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Fri, 16 May 2025 20:45:44 +0000 (16:45 -0400)]
bcachefs: Call bch2_bkey_set_needs_rebalance() earlier in write path
There's no reason to be running this inside our transaction; it forces
us to copy the key we're updating to a temporary, which we'd like to
skip.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Fri, 16 May 2025 21:07:06 +0000 (17:07 -0400)]
bcachefs: Simplify bch2_extent_atomic_end()
It used to be that we had a fixed maximum number of btree paths to work
with - 64.
That's no longer the case, so bch2_extent_atomic_end() doesn't have to
be as strict.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Sat, 17 May 2025 00:43:18 +0000 (20:43 -0400)]
bcachefs: Coalesce accounting in trans commit
Accounting has gotten quite heavy, and there's lots of redundancy in
accounting updates within a transaction, as we often add/delete multiple
extents that touch the same accountign counters.
This will reduce the amount of data that we journal, and reduce pressure
downstream on the btree write buffer.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Sat, 17 May 2025 00:26:01 +0000 (20:26 -0400)]
bcachefs: Split out accounting in transaction commit
There can be a lot of rendundancy in accounting updates within a single
btree transaction.
Split out accounting updates so that they can be deduped, in the next
commit.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Sat, 17 May 2025 00:23:58 +0000 (20:23 -0400)]
bcachefs: btree_trans_subbuf
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Sun, 18 May 2025 02:32:51 +0000 (22:32 -0400)]
bcachefs: Make accounting mismatch errors more readable
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Sat, 17 May 2025 23:54:39 +0000 (19:54 -0400)]
bcachefs: async objs now support bch_write_ops
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Sat, 17 May 2025 23:53:50 +0000 (19:53 -0400)]
bcachefs: fix bch2_debugfs_flush_buf() when tabstops are in use
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Sat, 17 May 2025 19:58:23 +0000 (15:58 -0400)]
bcachefs: fsck: Include loops in error messages
This fixes the subvol loop checking and directory loop checking to print
the loop.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Fri, 9 May 2025 21:01:05 +0000 (17:01 -0400)]
bcachefs: bch2_check_bucket_backpointer_mismatch()
Detect buckets with missing backpointers, and run repair on demand.
__bch2_move_data_phys() now calls
bch2_check_bucket_backpointer_mismatch() as it walks buckets, which
checks for missing backpointers by comparing backpointers against bucket
sector counts.
When missing backpointers are detected, we kick off
bch2_check_extents_to_backpointers() asynchronously - right away if
we're trying to evacuate, or with a threshold if we're just running
copygc.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Sat, 17 May 2025 19:05:26 +0000 (15:05 -0400)]
bcachefs: Improve bucket_bitmap code
Add some more helpers, and mismatches is now a superset of the empty
bitmap - simplifies most checks.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Sat, 10 May 2025 03:28:01 +0000 (23:28 -0400)]
bcachefs: Run recovery passes asynchronously
When we request a recovery pass to be run online, i.e. not during
recovery, if it's an online pass it'll now be run in the background,
instead of waiting for the next mount.
To avoid situations where recovery passes are running continuously, this
also includes ratelimiting: if the RUN_RECOVERY_PASS_ratelimit flag is
passed, the pass may be deferred until later - depending on the runtime
and last run stats in the recovery_passes superblock section.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Wed, 14 May 2025 19:54:20 +0000 (15:54 -0400)]
bcachefs: bch2_run_explicit_recovery_pass() cleanup
Consolidate the run_explicit_recovery_pass() interfaces by adding a
flags parameter; this will also let us add a RUN_RECOVERY_PASS_ratelimit
flag.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Sat, 10 May 2025 22:23:41 +0000 (18:23 -0400)]
bcachefs: bch2_recovery_pass_status_to_text()
Show recovery pass status in sysfs - important now that we're running
them automatically in the background.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Tue, 13 May 2025 21:36:55 +0000 (17:36 -0400)]
bcachefs: Reduce usage of recovery.curr_pass
We want recovery.curr_pass to be private to the recovery passes code,
for better showing recovery pass status; also, it may rewind and is
generally not the correct member to use.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Sat, 10 May 2025 21:45:45 +0000 (17:45 -0400)]
bcachefs: __bch2_run_recovery_passes()
Consolidate bch2_run_recovery_passes() and
bch2_run_online_recovery_passes(), prep work for automatically
scheduling and running recovery passes in the background.
- Now takes a mask of which passes to run, automatic background repair
will pass in sb.recovery_passes_required.
- Skips passes that are failing: a pass that failed may be reattempted
after another pass succeeds (some passes depend on repair done by
other passes for successful completion).
- bch2_recovery_passes_match() helper to skip alloc passes on a
filesystem without alloc info.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Sat, 10 May 2025 22:21:49 +0000 (18:21 -0400)]
bcachefs: struct bch_fs_recovery
bch_fs has gotten obnoxiously big, let's start organizing thins a bit
better.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Sat, 17 May 2025 03:12:09 +0000 (23:12 -0400)]
bcachefs: kill copy in bch2_disk_accounting_mod()
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Fri, 16 May 2025 21:29:53 +0000 (17:29 -0400)]
bcachefs: Optimize bch2_trans_start_alloc_update()
Avoid doing more updates if we already have one.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Thu, 15 May 2025 11:45:52 +0000 (07:45 -0400)]
bcachefs: btree key cache asserts
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Fri, 16 May 2025 21:18:27 +0000 (17:18 -0400)]
bcachefs: journal path now uses discard_opt_enabled()
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Fri, 16 May 2025 21:21:00 +0000 (17:21 -0400)]
bcachefs: relock_fail tracepoint now includes btree
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Thu, 15 May 2025 14:08:06 +0000 (10:08 -0400)]
bcachefs: do_rebalance_scan() now only updates bch_extent_rebalance
This ensures that our pending rebalance work accounting is accurate
quickly.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Thu, 15 May 2025 13:15:24 +0000 (09:15 -0400)]
bcachefs: better error message for subvol_fs_path_parent_wrong
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Thu, 15 May 2025 12:41:26 +0000 (08:41 -0400)]
bcachefs: Improve bch2_repair_inode_hash_info()
Improve this so it can be used by fsck.c check_inode(); it provides a
much better error message than the check_inode() version.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Thu, 15 May 2025 12:31:02 +0000 (08:31 -0400)]
bcachefs: bch2_inode_find_snapshot_root()
Factor out a small common helper.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Alan Huang [Mon, 12 May 2025 18:44:26 +0000 (02:44 +0800)]
bcachefs: Early return to avoid unnecessary lock
Signed-off-by: Alan Huang <mmpgouride@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Alan Huang [Thu, 15 May 2025 14:29:50 +0000 (22:29 +0800)]
bcachefs: Kill BTREE_TRIGGER_bucket_invalidate
Signed-off-by: Alan Huang <mmpgouride@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Wed, 14 May 2025 21:58:00 +0000 (17:58 -0400)]
bcachefs: Fix opt hooks in sysfs for non sb option
We weren't checking if the option changed for non-superblock options -
this led to rebalance not waking up when enabling the
"rebalance_enabled" option.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Wed, 14 May 2025 14:44:21 +0000 (10:44 -0400)]
bcachefs: fix can_write_extent()
Failing to check the return value of bch2_dev_rcu(): we could
(technically) race with device removal.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Tue, 13 May 2025 17:49:51 +0000 (13:49 -0400)]
bcachefs: Add tracepoint, counter for io_move_created_rebalance
Internal moves shouldn't add new rebalance_work, but it's been reported
that this seems to be happening. Add a tracepoint and counter so we can
see what's going on.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Thu, 8 May 2025 21:19:10 +0000 (17:19 -0400)]
bcachefs: move_buckets in rhashtable when allocated
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Kent Overstreet [Thu, 8 May 2025 21:17:17 +0000 (17:17 -0400)]
bcachefs: Move pending buckets queue to buckets_in_flight
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>