如果初始化 ceph 集群，而osd节点很多的情况下，手动分区的工作量就体现出来。
所有写一个脚本，自动完成分区工作
当前系统磁盘情况：
说明：/dev/sda 为系统盘, /dev/sdb-/dev/sdi 为osd磁盘，/dev/sdj-/dev/sdk 为journal磁盘,/dev/sdl为mon磁盘
最终效果:
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
sda 8:0 0 558.4G 0 disk
├─sda1 8:1 0 2M 0 part
├─sda2 8:2 0 977M 0 part /boot/efi
├─sda3 8:3 0 14.9G 0 part [SWAP]
└─sda4 8:4 0 542.4G 0 part /
sdb 8:16 0 3.7T 0 disk
└─sdb1 8:17 0 3.7T 0 part /var/lib/ceph/osd/ceph-0
sdc 8:32 0 3.7T 0 disk
└─sdc1 8:33 0 3.7T 0 part /var/lib/ceph/osd/ceph-1
sdd 8:48 0 3.7T 0 disk
└─sdd1 8:49 0 3.7T 0 part /var/lib/ceph/osd/ceph-2
sde 8:64 0 3.7T 0 disk
└─sde1 8:65 0 3.7T 0 part /var/lib/ceph/osd/ceph-3
sdf 8:80 0 3.7T 0 disk
└─sdf1 8:81 0 3.7T 0 part /var/lib/ceph/osd/ceph-4
sdg 8:96 0 3.7T 0 disk
└─sdg1 8:97 0 3.7T 0 part /var/lib/ceph/osd/ceph-5
sdh 8:112 0 3.7T 0 disk
└─sdh1 8:113 0 3.7T 0 part /var/lib/ceph/osd/ceph-6
sdi 8:128 0 3.7T 0 disk
└─sdi1 8:129 0 3.7T 0 part /var/lib/ceph/osd/ceph-7
sdj 8:144 0 446.6G 0 disk
├─sdj1 8:145 0 111.7G 0 part
├─sdj2 8:146 0 107.2G 0 part
├─sdj3 8:147 0 107.2G 0 part
└─sdj4 8:148 0 107.2G 0 part
sdk 8:160 0 446.6G 0 disk
├─sdk1 8:161 0 111.7G 0 part
├─sdk2 8:162 0 107.2G 0 part
├─sdk3 8:163 0 107.2G 0 part
└─sdk4 8:164 0 107.2G 0 part
sdl 8:176 0 446.6G 0 disk
└─sdl1 8:177 0 446.6G 0 part /var/lib/ceph/mon
脚本文件：
#!/bin/bash
PATH=/bin:/sbin:/usr/bin:/usr/sbin
export PATH
##osd磁盘分区8块 97表示a
i=1
while [ $i -lt 10 ]
do
j=`echo $i|awk '{printf "%c",97+$i}'`
echo "Start build : /dev/sd${j}"
/usr/bin/expect<<EOF
spawn parted /dev/sd$j
send "mklabel gpt\r"
expect {
"*Ignore/Cancel?" { send "Cancel\r"; exp_continue }
"*Yes/No" { send "Yes\r"; exp_continue }
}
send "mkpart primary xfs 0% 100%\r"
send "quit\r"
expect eof
EOF
sleep 15
echo "Start format : /dev/sd${j}"
mkfs.xfs /dev/sd${j}1
i=$(($i+1))
done
##日志分区2块，97+9 表示i
i=9
while [ $i -lt 11 ]
do
j=`echo $i|awk '{printf "%c",97+$i}'`
echo "Start build : /dev/sd${j}"
/usr/bin/expect<<EOF
spawn parted /dev/sd$j
send "mklabel gpt\r"
expect {
"*Ignore/Cancel?" { send "Cancel\r"; exp_continue }
"*Yes/No" { send "Yes\r"; exp_continue }
}
send "mkpart primary 0% 25%\r"
send "mkpart primary 26% 50%\r"
send "mkpart primary 51% 75%\r"
send "mkpart primary 76% 100%\r"
send "quit\r"
expect eof
EOF
printf $j
i=$(($i+1))
done
##mon分区 97+11 等于i
i=11
j=`echo $i|awk '{printf "%c",97+$i}'`
printf $j
echo "Start build : /dev/sd${j}"
/usr/bin/expect<<EOF
spawn parted /dev/sd$j
send "mklabel gpt\r"
expect {
"*Ignore/Cancel?" { send "Cancel\r"; exp_continue }
"*Yes/No" { send "Yes\r"; exp_continue }
}
send "mkpart primary 0% 100%\r"
send "quit\r"
expect eof
EOF