它只能为具有feature@lz4_compress功能标记属性的池启用: trochej@madchamber:~$ sudo zpool get feature@lz4_compress data NAME PROPERTY VALUE SOURCE data feature@lz4_compress active local 如果启用了该功能,您可以为任何给定的数据集设置compression=lz4。您可以通过调用以下命令来启用它: trochej@madchamber:~...
sudo zfs set compression=lz4 nas2可以查看zfs阵列的压缩率:zfs get compressratio nas2输出内容大致如下:NAME PROPERTY VALUE SOURCE nas2 compressratio 1.12x -值得注意的是,如果你的阵列是新建不久,里面还没有多少文件时,一般这个值是1。压缩率与文件类型有很大的关系。比如,lz4对视频格式的压缩程度是不高的...
zp/test compressratio 1.43x - zp/test compression lz4 local zp/test refcompressratio 1.43x - 不压缩的情况测试 : [root@spark01 digoal]# zfs set compression=off zp/test [root@spark01 digoal]# rm -rf /zp/test/* [root@spark01 digoal]# date +%F%T; cp -r hadoop-2.4.0* spl-0.6.2*...
Add lz4hc compression type… 3ea2570 behlendorfremoved theDifficulty - MediumlabelOct 5, 2016 vozhyk-added a commit to vozhyk-/zfs that referenced this issueOct 30, 2016 Add lz4hc compression type… 3f9c7ee Sign up for freeto join this conversation on GitHub. Already have an account?Sign...
0 = LZ4 5 = LZJB as used by ZFS on Linux. 6 = LZJB as used by BSD. 7 = Experimental High(er)speed LZJB decompressor. -B will let you select the compression block size. (1-7) this selects a block between 1K (1) and 4M (7) 0 will select a block of 512, however lzjb ...
压缩效率和压缩比不能兼得, 一般推荐LZ4, 压缩效率和压缩比折中. compression=on | off | lzjb | gzip | gzip-N | zle | lz4 Controls the compression algorithm used for this dataset. The lzjb compression algorithm is optimized for performance while providing decent data compression. Setting compression...
# zfs set compression=<algorithm> <dataset> We recommend using thelz4algorithm, because it adds very little CPU overhead. Other algorithms likelzjbandgzip-N, whereNis an integer from1(fastest) to9(best compression ratio), are also available. Depending on the algorithm and how compressible the...
snapshots, copy-on-write styleclones, a similar idea to snapshots, potentially useful for VMs and suchzvol - basically a ZFS-backed block device(with options of snapshotting and compression and such, like with filesystems)(verify)In terms of major organization: Physical disks go in vdevs...
// 创建一个zpool $ modprobe zfs $ zpool create -f -m /sample sample -o ashift=12 /dev/sdc $ zfs create sample/fs1 \ -o mountpoint=/sample/fs1 \ -o atime=off \ -o canmount=on \ -o compression=lz4 \ -o quota=100G \ -o recordsize=8k \ -o logbias=throughput // 手动umount...
or even the compression type: sudo zfs set compression=lz4 mypool and check on the compression level using: sudo zfs get compressratio lz4 is significantly faster than the other options while still performing well; lz4 is the safest choice. ...