* meta: rename info version to redisVersion

* add client information for each session

* cmd: add `sessions` subcommand to list all client sessions

* meta/sql: sync session table when creating sessions to add 'info' column

* cmd/sessions: add --detail option to show sustained inode and locks related to each session

* cmd: remove `sessions` subcommand, and add its functions to `status`

* cmd/status: remove --detail flag, instead only show detailed information if sid is specified

* cmd/status: add -f/--format to specify format of output

* cmd/status: use only json format for now

* cmd/status: rename print to printJson

* cleanup leaked inodes

* check with entries

* cleanup leaked inodes in Redis

* fix test

* Add `warmup` command to build cache explicitly

* Add fillCache function to traverse over entries under a given root

* Directly build cache from ChunkStore

* Force cache targets when warmup

* Use meta.Read to traverse over all slices of a file

* Fix unit test

* Address comments

* 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>

* 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 a option to compact all chunks in GC

* update logging

* fix info

* fix compact

* increase cache size

* Add info to show internal infomation for directory or file
Signed-off-by: Nswj <1186093704@qq.com>

* show internal information for files, add docs
Co-authored-by: Nswj <1186093704@qq.com>

* check existence of blocks

* fix size of last block

* add gc and fsck into travis

* update tests

* update license header

* use file in tests

* umount force

* disable check for PEM

* fix travis

* fix travis

* garbage collection for objects

* delete in parallel

* fix tests

* add progress bar

* cleanup

* support copy_file_range

* cleanup slices with negative refs

* ignore error

* ignore error

* add doc for public interface

* ignore error

* ignore error

* cleanup

* remove unused field

* fix flaky test

* fix lint errors

* fix lint errors

* fix lint errors

* fix lint errors

* fix bug

* Hadoop Connector for JuiceFS

* add Java source code

* add license header

* move libjfs into sdk/java

* cleanup

* fix lint

* add test in travis

* fix Makefile

* fix tests

* C API

* fix guid

* add missing file

* add license header

* fix lint

* Add path based API

* fix build

* fix lint

* fix lint

* cleanup

* fix log format

* fix log format

* fix lint

* cleanup

* add a option to force overwrite existing volume

* fix flag

* compact slices into bigger one

* cleanup