/dev/sdb1 is apparently in use by the system; will not make a 文件系统 here!
格式化磁盘分区报错
[root@localhost ~]# mke2fs -t ext4 /dev/sdb1mke2fs 1.42.9 (28-Dec-2013) /dev/sdb1 is apparently in use by the system; will not make a 文件系统 here!执行 dmsetup status，显示有lvm 逻辑卷
[root@localhost ~]# dmsetup status
statusvg1-lv1: 0 204800 linear 执行dmsetup remove_all [root@localhost ~]# dmsetup remove_all再次执行 mke2fs -t ext4 /dev/sdb1，格式化磁盘分区成功
[root@localhost ~]# mke2fs -t ext4 /dev/sdb1mke2fs 1.42.9 (28-Dec-2013) 文件系统标签= OS type: Linux 块大小=4096 (log=2) 分块大小=4096 (log=2)Stride=0 blocks, Stripe width=0 blocks65536 inodes, 262144 blocks13107 blocks (5.00%) reserved for the super user第一个数据块=0Maximum filesystem blocks=2684354568 block groups32768 blocks per group, 32768 fragments per group8192 inodes per groupSuperblock backups stored on blocks: 32768, 98304, 163840, 229376Allocating group tables: 完成 正在写入inode表: 完成 Creating journal (8192 blocks): 完成 Writing superblocks and filesystem accounting information: 完成