DAY-09ktjf笔记 1.1 使用xfs文件系统superblock实验
创建一个XFS文件系统 [root@localhost ~]# mkfs.xfs -f /dev/sdb1 meta-data=/dev/sdb1 isize=256 agcount=4, agsize=1966102 blks = sectsz=512 attr=2, projid32bit=0 data = bsize=4096 blocks=7864408, imaxpct=25 = sunit=0 swidth=0 blks naming =version 2 bsize=4096 ascii-ci=0 log =internal log bsize=4096 blocks=3840, version=2 = sectsz=512 sunit=0 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0[root@localhost ~]# cat /etc/fstab |grep sdsb1 /dev/sdb1 /test xfs defaults 0 0
[root@localhost ~]# mount -a
[root@localhost ~]# df -h /dev/sdb1 30G 610M 30G 2% /test 2. 卸载文件系统/test, 并且破坏superblock [root@localhost ~]# umount /test [root@localhost ~]# dd if=/dev/zero of=/dev
