verify_replicas_entry() is only for newly created replicas entries -
existing entries on disk may have unknown data types, and we have real
verifiers for them.
Reported-by: syzbot+73414091bd382684ee2b@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
We can't disallow unknown data_types in verify() - we have to preserve
them unchanged for backwards compat; that means we have to add a few
more guards.
Reported-by: syzbot+249018ea545364f78d04@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Pull out eytzinger.c and kill eytzinger_cmp_fn. We now provide
eytzinger0_sort and eytzinger0_sort_r, which use the standard cmp_func_t
and cmp_r_func_t callbacks.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Validation was completely missing for replicas entries in the journal
(not the superblock replicas section) - we can't have replicas entries
pointing to invalid devices.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Instead of using token pasting to generate methods for each superblock
section, just make the type a parameter to bch2_sb_field_get().
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Prep work for introducing bch_sb_field_members_v2 - introduce new
helpers that will check for members_v2 if it exists, otherwise using v1
Signed-off-by: Hunter Shaffer <huntershaffer182456@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
We need to always call bch2_replicas_gc_end() after we've called
bch2_replicas_gc_start(), else we leave state around that needs to be
cleaned up.
Partial fix for: https://github.com/koverstreet/bcachefs/issues/560
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
- endianness fixes
- mark some things static
- fix a few __percpu annotations
- fix silent enum conversions
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
bch2_replicas_gc_(start|end) is now only used for journal replicas
entries, which don't have bucket sector counts - so this code is
entirely dead and can be deleted.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This adds private error codes for most (but not all) of our ENOMEM uses,
which makes it easier to track down assorted allocation failures.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
We shouldn't be overloading standard error codes now that we have
provisions for bcachefs-specific errorcodes: this patch converts super.c
and super-io.c to per error site errcodes, with a bit of cleanup.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Continuing the saga of introducing private dedicated error codes for
each error path, this patch converts ENOSPC to error codes that are
subtypes of ENOSPC. We've recently had a test failure where we got
-ENOSPC where we shouldn't have, and didn't have enough information to
tell where it came from, so this patch will solve that problem.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This converts bcachefs to the modern printbuf interface/implementation,
synced with the version to be submitted upstream.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This patch changes printbufs dynamically allocate and reallocate a
buffer as needed. Stack usage has become a bit of a problem, and a major
cause of that has been static size string buffers on the stack.
The most involved part of this refactoring is that printbufs must now be
exited with printbuf_exit().
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This patch improves the superblock .to_text() methods and adds methods
for all types that were missing them. It also improves printbufs by
allowing them to specfiy what units we want to be printing in, and adds
new wrapper methods for unifying our kernel and userspace environments.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
This patch converts bch2_sb_validate() and the .validate methods for the
various superblock sections to take printbuf, to which they can print
detailed error messages, including printing the entire section that was
invalid.
This is a great improvement over the previous situation, where we could
only return static strings that didn't have precise information about
what was wrong.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
This simplifies the code quite a bit and eliminates an inconsistency - a
given bkey doesn't necessarily translate to a single replicas entry for
disk space accounting.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
This changes bch2_trans_fs_usage_apply() to handle failure (replicas
entry missing) by reverting the changes it made - meaning we can make
the main transaction commit path a bit slimmer, and perhaps also
simplify some locking in upcoming patches.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
It's not an error if we don't have cached data - skip BCH_DATA_cached in
bch2_have_enough_devs().
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
This is an important cleanup, eliminating an unnecessary copy in the
transaction commit path.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This patch standardizes all the enums that have associated string tables
(probably more enums should have string tables).
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
If a given set of replicas is entirely on failed devices, don't fail the
mount: we will still fail the mount if we have some copies on non failed
devices.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
When the replicas mechanism was added, for tracking data by which drives
it's replicated on, the check for whether we have sufficient devices was
never updated to make use of it. This patch finally does that.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This fixes some arithmetic bugs in "bcachefs: Journal updates to dev
usage" - additionally, it cleans things up by switching everything that
goes in every journal entry to the journal_entry_res mechanism.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This fixes a bug introduced by "bcachefs: Improve diagnostics when
journal entries are missing" - devices in a replicas entry are supposed
to be sorted.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
We're transitioning to memalloc_nofs_save/restore instead of GFP flags
with the rest of the kernel, and GFP_NOIO was excessively strict and
causing unnnecessary allocation failures - these allocations are done
with btree locks dropped.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This fixes a regression introduced by "bcachefs: Refactor filesystem
usage accounting". We have to include all the replicas entries that have
any of the entries for different journal entries nonzero, we can't skip
them if they sum to zero.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This is something we clearly should be checking for, but weren't -
oops.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Various filesystem usage counters are kept in percpu counters, with one
set per in flight journal buffer. Right now all the code that deals with
it assumes that there's only two buffers/sets of counters, but the
number of journal bufs is getting increased to 4 in the next patch - so
refactor that code to not assume a constant.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Instead of trying to charge EC parity to the data within the stripe
(which is subject to rounding errors), let's charge it to the stripe
itself. It should also make -ENOSPC issues easier to deal with if we
charge for parity blocks up front, and means we can also make more fine
grained accounting available to the user.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Awhile back the mechanism for garbage collecting unused replicas entries
was significantly improved, but some cleanup was missed - this patch
does that now.
This is also prep work for a patch to account for erasure coded parity
blocks separately - we need to consolidate the logic for
checking/marking the various replicas entries from one bkey into a
single function.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Add a new btree ptr type which contains the sequence number (random 64
bit cookie, actually) for that btree node - this lets us verify that
when we read in a btree node it really is the btree node we wanted.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This needs to match bch2_mark_extent()/bch2_trans_mark_extent() in
buckets.c
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
