space_cache 这个与是否使用SSD无关,默认启用的缓存配置选项,会提升性能 相关挂载选项: space_cache (默认是V1实现) space_cache=version (V2实现建议用于大容量硬盘) nospace_cache & clear_cache (配合使用用于切换版本或取消缓存)
而且Btrfs支持的挂载参数可以用“非常多”来形容,对性能影响比较大的主要有compress和space_cache两个参数,其他的还有autodefrag等,也会对性能和磁盘写入产生影响,这样一来就有很大的调整空间。除此之外,Btrfs还提供了专门的2个SSD相关的挂载参数:ssd和ssd_spread。以及通用的noatime和discard两个参数,都能够使文件系统...
1#defineBTRFS_FREE_SPACE_EXTENT 12#defineBTRFS_FREE_SPACE_BITMAP 234structbtrfs_free_space_entry {5__le64 offset; 记录空闲空间的起始地址6__le64 bytes; 空闲空间的大小;0表示没有空闲空间可用7u8 type; BTRFS_FREE_SPACE_EXTENT 没有使用 bitmap8BTRFS_FREE_SPACE_BITMAP 使用 bitmap9} __attribute...
/dev/disk/by-id/usb-ST4000DM_000-1F2168_SSI7632000000001-0:0 /srv/dev-disk-by-id-usb-ST4000DM_000-1F2168_SSI7632000000001-0-0 btrfs autodefrag,commit=120,compress-force=zstd:3,discard=async,noatime,space_cache=v2,nossd,nofail 0 2 /dev/disk/by-uuid/94225562225549FE /srv/dev-disk-...
(default: 'defaults,nofail,x-systemd.growfs,noatime,lazytime,compress-force=zstd,space_cache=v2,autodefrag,nodiscard')--STEAMOS_BTRFS_HOME_MOUNT_SUBVOL SUBVOL set the /home subvolume name to use(env var: 'STEAMOS_BTRFS_HOME_MOUNT_SUBVOL')(default: '@')--STEAMOS_BTRFS_ROOTFS_PACMAN_EXTRA...
/dev/vda1 on / type btrfs (rw,relatime,seclabel,space_cache=v2,subvolid=261,subvol=/root/.snapshots/root) Check for the existence ofgit. Copy which git The output states that there isno giton the system. Thegitcommand is absent because the snapshot we are now running was created bef...
The qgroup accounting will be consistent, can be used together with --rootdir. See also btrfs-quota(8). free-space-tree (default since btrfs-progs 5.15, kernel support since 4.5) Enable the free space tree (mount option space_cache=v2) for persisting the free space cache. ...
btrfs-progs: move space cache removal to rescue group Nov 4, 2023 btrfs-corrupt-block.c btrfs-progs: clean up includes, using include-what-you-use Oct 3, 2023 btrfs-crc.c btrfs-progs: move crc32c implementation to crypto/ Nov 19, 2019 btrfs-debugfs btrfs-progs: port btrfs-debugfs to ...
#optimizer_switch='join_cache_hashed=on' #optimizer_switch='join_cache_bka=on' #join_cache_level=4 #join_buffer_size=32M #join_buffer_space_limit=32M ###galera-wsrep### #WSREP parameter wsrep_on = on #only mariadb>=10.1 #wsrep_provider = none...
[Unit]BindsTo=steam-compatdata-dev@%N.serviceAfter=steam-compatdata-dev@%N.servicePropagatesStopTo=steam-compatdata-dev@%N.service[Mount]What=/dev/disk/by-steam-compatdata-dev/%NWhere=<mountedpath>/steamapps/compatdataOptions=rw,noatime,lazytime,compress-force=zstd:6,space_cache=v2,autodefrag...