* use timestamp instead of datetime in SQL

* remove tag 'updated'

* update stats in background

* change stats

* fix tests

* Fix missing error placeholder: 'update session: %!s(<nil>)'

* Heartbeat should have consistent date format

* Retry transaction on failover

* DISABLE,NOREAD,NOWRITE are sub-type

* Add Resolve method to the Meta interface

* Check for success returned errno

* Add function for parsing inode attr

* Add function lookup

* Add function for checking accessibility

* Add functions for packing attr and resolving path

* Avoid unnecessary attr unpacking

* pass unit tests

* add benchmark
Co-authored-by: Nsuzaku <satorulogic@gmail.com>

* Add BenchmarkXattr (setxattr, getxattr, removexattr, listxattr)

* Add BenchmarkLink (link, symlink, readlink)

* Clean up code and simplifies tests

* add addr examples for Titan and TiDB

* Add BenchmarkData (newchunk, write, read)

* add more metrics for block cache

* cleanup

* Move redis benchmark to a standalone file

* Redirect log to a file when testing

* Add BenchmarkDir (mkdir, rename dir, rmdir)

* Add BenchmarkFile (mknod, create, rename, unlink, lookup, getattr, setattr, access)

* Adjusted for SQL meta

* Update benchmarks_test.go
Co-authored-by: NDavies Liu <davies@juicedata.io>

sort operations by total duration.
only pause the replay
Fit the result with 80 chars

* invalidate read buffer after truncate

* no accesslog for truncate (included in setattr)

* use sql database as meta store

* pass simple tests

* use bytes for chunks

* use bytes for chunks

* cleanup trasaction

* cleanup

* add unit test for SQL

* cleanup

* cleanup

* fix build

* use db as meta store

* fix contention

* fix truncate and compaction

* fix contension on counter

* generate id in batch

* fix build

* fix test

* fix flaky test

* support mysql

* fix ci

* fix flaky test

* test with sqlite3

* update column as notnull

* remove passwd

* update metrics

* fix nextInode and deleted files

add percentage field(total time / interval, may exceed 100 in high concurrency) for juicefs profiling (#379)

Reported-by: NDanielQujun <qujun@tiduyun.com>

- Add cache directory path to every log of `cacheStore` to help distinguish different directory when use multiple cache directories
- Add log before execute `cacheStore.cleanup()` to know more context
- Upgrade some logs level (INFO → WARNING)
Co-authored-by: NDavies Liu <davies@juicedata.io>

* Add unit tests for package meta

* Add test for CompactAll and ListSlices

* Call cleanStaleSessions

* Show coverage of tests

* store blocks into multiple bucket

* fix lint

* update command reference

* fix unit test

* address comments

* show internal metrics at end of benchmark

* update docs

* add how to sync account docs

* fix

* fix