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