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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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This ensures that our pending rebalance work accounting is accurate
quickly.
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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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>
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Factor out a small common helper.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Alan Huang <mmpgouride@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Signed-off-by: Alan Huang <mmpgouride@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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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>
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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>
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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>
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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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Small cleanup/simplification, and prep work for the next patch, which
will add checking if buckets don't get evacuated because they're missing
backpointers.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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More error message cleanup: instead of multiple printk()s per error, we
want to be building up a single error message in a printbuf, so that it
can be printed with indenting that shows grouping and avoid errors
getting interspersed or lost in the log.
This gets rid of most calls to bch2_fs_emergency_read_only(). We still
have calls to
- bch2_fatal_error()
- bch2_fs_fatal_error()
- bch2_fs_fatal_err_on()
that need work.
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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Slightly more readable.
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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Don't put btree locking asserts behind CONFIG_BCACHEFS_DEBUG, put them
behind a module parameter.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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We'd like users to be able to debug without building custom kernels, so
this will help us get rid of CONFIG_BCACHEFS_DEBUG, at least for most
things.
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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Prep work for automatically running recovery passes asynchronously.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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New superblock section for statistics on recovery passes - last time
ran (successfully), last runtime.
This will be used by self healing code to determine when to kick off
potentially expensive recovery passes.
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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More self healing work: we're going to be calling
check_bucket_backpointer_mismatch() at runtime, outside of fsck.
Then when we need to we'll kick off the full
check_extents_to_backpointers recovery pass.
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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copygc runs with a full stack available, there's no reason to
dynamically allocate this.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Factor out the per-device calculations, for better introspection.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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fix debug build in userspace
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Add 'opts.snapshot_deletion_enabled', enabled by default.
This may be turned off so that the new sysfs knob,
'internal/trigger_delete_dead_snapshots', may be used instead - this
will allow snapshot deletion to be profiled more easily.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Fast device removal, that uses backpointers to find pointers to the
device being removed instead of a full metadata scan.
This requires BCH_SB_MEMBER_DELETED_UUID, which is an incompatible
change - hence the version number bump. We don't fully trust
backpointers, so we don't want to reuse device indexes until after a
fsck has verified that there aren't any pointers to removed devices.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Currently, device removal has to scan all metadata for pointers to the
device being removed.
Add a new method, with the same interface as bch2_dev_data_drop(), that
scans by backpointers instead - this will drastically speed up device
removal.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Add a sentinal value for devices that have been removed, but don't want
to reuse their index until a fsck has completed.
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 an option for setting rebalance to only run when connected to mains
power.
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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Preferentially keep existing cached pointers instead of adding new ones.
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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This was an oversight, we want bch2_alloc_sectors_append_ptrs_inlined()
fully inlined.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Minor optimization, the caller generally has it already.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Make the locking easier to follow; also take io_refs earlier, in
__journal_write_alloc().
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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Since extents, dirents and xattrs require an inode with the
corresponding snapshot ID to exists, we can avoid a lot of scanning by
only scanning those trees for keys to process if the correspending inode
exists.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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We're going to be speeding up snapshot deletion, by only having it
process the extents/dirents/xattrs btrees if an inode of a given
snapshot ID was present.
This raises the possibility of 'bkey_in_missing_snapshot' errors popping
up, if we ever accidentally don't do the corresponding inode update, or
if the new algorithm has bugs.
So instead of deleting snapshot IDs, add a new deleted flag, so that
'key in missing snapshot' errors can more definitively tell what
happened and automatically repair.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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