fdisk WARNING: Re-reading the partition

fdisk WARNING: Re-reading the partition

[root@test ~]# fdisk /dev/sdaWARNING: fdisk GPT support is currently new, and therefore in an experimental phase. Use at your own discretion.Welcome to fdisk (util-linux 2.23.2).Changes will remain in memory only, until you decide to write them.Be careful before using the write command.Command (m for help): nPartition number (4-128, default 4): First sector (34-1873045470, default 1017546752): Last sector, +sectors or +size{K,M,G,T,P} (1017546752-1873045470, default 1873045470): Created partition 4Command (m for help): wThe partition table has been altered!Calling ioctl() to re-read partition table.WARNING: Re-reading the partition table failed with error 16: Device or resource busy.The kernel still uses the old table. The new table will be used atthe next reboot or after you run partprobe(8) or kpartx(8)Syncing disks.

fdisk -l看不到磁盘分区，执行命令刷新，使用fdisk工具只是将分区信息写到磁盘，如果需要mkfs磁盘分区则需要重启系统，而使用partprobe则可以使kernel重新读取分区 信息，从而避免重启系统。

[root@test ~]# partprobe

linux

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