标签:mapper wap free 实验 process user ffffff linux cto
今天正在做一个实验,突然发现根目录满了,把这个过程记录下来(当初创建的时候给根目录分配的磁盘太小了.ahhhhh)[root@centos7 ~]# fdisk /dev/sda
[root@centos7 ~]# partprobe /dev/sda #使kernel重新读取分区 信息,从而避免重启系统。
[root@centos7 ~]# pvcreate /dev/sda3
Physical volume "/dev/sda3" successfully created.
[root@centos7 ~]# vgs
VG #PV #LV #SN Attr VSize VFree
centos 1 3 0 wz--n- 12.00g 4.00m
[root@centos7 ~]# vgextend centos /dev/sda3
Volume group "centos" successfully extended
[root@centos7 ~]# vgs
VG #PV #LV #SN Attr VSize VFree
centos 2 3 0 wz--n- 17.00g 5.00g
[root@centos7 ~]# lvextend -L +5G /dev/mapper/centos-root
Size of logical volume centos/root changed from 5.00 GiB (1280 extents) to 10.00 GiB (2560 extents).
Logical volume centos/root successfully resized.
[root@centos7 ~]# xfs_growfs /dev/mapper/centos-root # 命令使系统重新读取大小
meta-data=/dev/mapper/centos-root isize=512 agcount=4, agsize=327680 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0 spinodes=0
data = bsize=4096 blocks=1310720, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal bsize=4096 blocks=2560, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 1310720 to 2621440
[root@centos7 ~]# lvs
LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert
app centos -wi-ao---- 5.00g
root centos -wi-ao---- 10.00g
swap centos -wi-ao---- 2.00g
[root@centos7 ~]# df -h
文件系统 容量 已用 可用 已用% 挂载点
/dev/mapper/centos-root 10G 4.6G 5.4G 46% /
devtmpfs 471M 0 471M 0% /dev
tmpfs 488M 0 488M 0% /dev/shm
tmpfs 488M 21M 467M 5% /run
tmpfs 488M 0 488M 0% /sys/fs/cgroup
/dev/mapper/centos-app 5.0G 33M 5.0G 1% /app
/dev/sda1 97M 60M 38M 62% /boot
tmpfs 98M 12K 98M 1% /run/user/42
tmpfs 98M 0 98M 0% /run/user/0
这是一种情况,还有另一种情况,我就不再举例了,我前面博客有详细介绍
标签:mapper wap free 实验 process user ffffff linux cto
原文地址:http://blog.51cto.com/13805636/2310060