XFS
概述
参考：
XFS 是由 Silicon Graphics 于 1993 年创建的高性能 64 位 Journaling File System(日志文件系统)。
可以通过 xfs_info 命令行工具看到信息
~]# xfs_info /dev/mapper/vg1-root
meta-data=/dev/mapper/vg1-root isize=512 agcount=4, agsize=32735744 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=1, sparse=1, rmapbt=0
= reflink=1
data = bsize=4096 blocks=130942976, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0, ftype=1
log =internal log bsize=4096 blocks=63937, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
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