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path: root/fs/bcachefs/super-io.h
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* bcachefs: __bch2_sb_field_to_text()Kent Overstreet2024-01-051-0/+2
| | | | Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
* bcachefs: Upgrades now specify errors to fix, like downgradesKent Overstreet2024-01-051-4/+0
| | | | Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
* bcachefs: add a quieter bch2_read_superDaniel Hill2024-01-011-0/+1
| | | | | | | | | | | If we're looking for a bcachefs supers iteratively we don't want to see this error. This function replaces KERN_ERR with KERN_INFO for when we don't find a bcachefs superblock but preserves other errors. Signed-off-by: Daniel Hill <daniel@gluo.nz> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
* bcachefs: bch_sb_field_downgradeKent Overstreet2024-01-011-1/+1
| | | | | | | | | | | | | | | | | | Add a new superblock section that contains a list of { minor version, recovery passes, errors_to_fix } that is - a list of recovery passes that must be run when downgrading past a given version, and a list of errors to silently fix. The upcoming disk accounting rewrite is not going to be fully compatible: we're going to have to regenerate accounting both when upgrading to the new version, and also from downgrading from the new version, since the new method of doing disk space accounting is a completely different architecture based on deltas, and synchronizing them for every jounal entry write to maintain compatibility is going to be too expensive and impractical. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
* bcachefs: bch_sb.recovery_passes_requiredKent Overstreet2024-01-011-0/+10
| | | | | | | | | | | | | | | | Add two new superblock fields. Since the main section of the superblock is now fully, we have to add a new variable length section for them - bch_sb_field_ext. - recovery_passes_requried: recovery passes that must be run on the next mount - errors_silent: errors that will be silently fixed These are to improve upgrading and dwongrading: these fields won't be cleared until after recovery successfully completes, so there won't be any issues with crashing partway through an upgrade or a downgrade. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
* bcachefs: bch_sb_field_errorsKent Overstreet2023-11-011-0/+5
| | | | | | | | | | | | Add a new superblock section to keep counts of errors seen since filesystem creation: we'll be addingcounters for every distinct fsck error. The new superblock section has entries of the for [ id, count, time_of_last_error ]; this is intended to let us see what errors are occuring - and getting fixed - via show-super output. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
* bcachefs: Add IO error counts to bch_memberKent Overstreet2023-11-011-35/+0
| | | | | | | | | We now track IO errors per device since filesystem creation. IO error counts can be viewed in sysfs, or with the 'bcachefs show-super' command. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
* bcachefs: bch2_sb_field_get() refactoringKent Overstreet2023-10-221-21/+9
| | | | | | | 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>
* bcachefs: Rename bch_sb_field_members -> bch_sb_field_members_v1Hunter Shaffer2023-10-221-1/+1
| | | | | Signed-off-by: Hunter Shaffer <huntershaffer182456@gmail.com> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
* bcachefs: Add new helper to retrieve bch_member from sbHunter Shaffer2023-10-221-3/+6
| | | | | | | | 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>
* bcachefs: sb-clean.cKent Overstreet2023-10-221-10/+0
| | | | | | Pull code for bch_sb_field_clean out into its own file. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
* bcachefs: Fix assorted checkpatch nitsKent Overstreet2023-10-221-0/+1
| | | | Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
* bcachefs: Version table now lists required recovery passesKent Overstreet2023-10-221-0/+4
| | | | | | | | | | | | | | Now that we've got forward compatibility sorted out, we should be doing more frequent version upgrades in the future. To avoid having to run a full fsck for every version upgrade, this improves the BCH_METADATA_VERSIONS() table to explicitly specify a bitmask of recovery passes to run when upgrading to or past a given version. This means we can also delete PASS_UPGRADE(). Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
* bcachefs: bch2_sb_maybe_downgrade(), bch2_sb_upgrade()Kent Overstreet2023-10-221-0/+3
| | | | | | Add some new helpers, and fix upgrade/downgrade in bch2_fs_initialize(). Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
* bcachefs: bcachefs_metadata_version_major_minorKent Overstreet2023-10-221-1/+2
| | | | | | | | | | | | | | This introduces major/minor versioning to the superblock version number. Major version number changes indicate incompatible releases; we can move forward to a new major version number, but not backwards. Minor version numbers indicate compatible changes - these add features, but can still be mounted and used by old versions. With the recent patches that make it possible to roll out new btrees and key types without breaking compatibility, we should be able to roll out most new features without incompatible changes. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
* bcachefs: bch2_version_compatible()Kent Overstreet2023-10-221-0/+6
| | | | | | | | This adds a new helper for checking if an on-disk version is compatible with the running version of bcachefs - prep work for introducing major:minor version numbers. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
* bcachefs: bch2_version_to_text()Kent Overstreet2023-10-221-0/+2
| | | | | | | Add a new helper for printing out metadata versions in a standard format. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
* bcachefs: Freespace, need_discard btreesKent Overstreet2023-10-221-0/+1
| | | | | | | | | | | This adds two new btrees for the upcoming allocator rewrite: an extents btree of free buckets, and a btree for buckets awaiting discards. We also add a new trigger for alloc keys to keep the new btrees up to date, and a compatibility path to initialize them on existing filesystems. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
* bcachefs: bch_sb_field_journal_v2Kent Overstreet2023-10-221-9/+0
| | | | | | | | | | | Add a new superblock field which represents journal buckets as ranges: also move code for the superblock journal fields to journal_sb.c. This also reworks the code for resizing the journal to write the new superblock before using the new journal buckets, and thus be a bit safer. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
* bcachefs: Add .to_text() methods for all superblock sectionsKent Overstreet2023-10-221-1/+3
| | | | | | | | | 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>
* bcachefs: Improved superblock-related error messagesKent Overstreet2023-10-221-5/+2
| | | | | | | | | | | | | 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>
* bcachefs: Kill non-lru cache replacement policiesKent Overstreet2023-10-221-1/+0
| | | | | | | Prep work for persistent LRUs and getting rid of the in memory bucket array. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
* bcachefs: Fix compat code for superblockKent Overstreet2023-10-221-1/+1
| | | | | | | | | The bkey compat code wasn't being run for btree roots in the superblock clean section - this patch fixes it to use the journal entry validate code. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
* bcachefs: Persist 64 bit io clocksKent Overstreet2023-10-221-3/+2
| | | | | | | | | | | | | | | | Originally, bcachefs - going back to bcache - stored, for each bucket, a 16 bit counter corresponding to how long it had been since the bucket was read from. But, this required periodically rescaling counters on every bucket to avoid wraparound. That wasn't an issue in bcache, where we'd perodically rewrite the per bucket metadata all at once, but in bcachefs we're trying to avoid having to walk every single bucket. This patch switches to persisting 64 bit io clocks, corresponding to the 64 bit bucket timestaps introduced in the previous patch with KEY_TYPE_alloc_v2. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
* bcachefs: bch2_check_set_feature()Kent Overstreet2023-10-221-20/+7
| | | | | | | New helper function for setting incompatible feature bits Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
* bcachefs: Verify fs hasn't been modified before going rwKent Overstreet2023-10-221-1/+1
| | | | Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
* bcachefs: Go rw lazilyKent Overstreet2023-10-221-1/+2
| | | | Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
* bcachefs: Write out fs usageKent Overstreet2023-10-221-0/+4
| | | | Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
* bcachefs: Make bkey types globally uniqueKent Overstreet2023-10-221-0/+2
| | | | | | | | | | this lets us get rid of a lot of extra switch statements - in a lot of places we dispatch on the btree node type, and then the key type, so this is a nice cleanup across a lot of code. Also improve the on disk format versioning stuff. Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
* bcachefs: stripe support for replicas trackingKent Overstreet2023-10-221-0/+1
| | | | Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
* bcachefs: revamp to_text methodsKent Overstreet2023-10-221-3/+3
| | | | Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
* bcachefs: Initial commitKent Overstreet2023-10-221-0/+142
Initially forked from drivers/md/bcache, bcachefs is a new copy-on-write filesystem with every feature you could possibly want. Website: https://bcachefs.org Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
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