问题：
将一块格式化的磁盘，因为重装的服务，想直接格式化数据盘，然后发现格式化的时候很慢，大概要4~5分钟。
解决：
网络上的解决案例：https://blog.csdn.net/msdnchina/article/details/93909726
In order to create the flesvstem use the -K option with mkfs command, lt will disables the blockdiscard at creating time. More information on mkfs man page:
-K Do not attempt to discard blocks at mkfs time.
(discarding blocks initially is useful on solidstatedevices and sparse thin-provisioned storage).
# mkfs.ext4 -K </dev/mapper/path to lvm volume> # For ext4 filesystem
# mkfs.xfs -K </dev/mapper/path to lvm volume> # For XFS filesvstem
根因：
The mkfs command issues a block discard command on the disk, but the underlying storage devicecannot handle it.