今天正在作一個實驗,忽然發現根目錄滿了,把這個過程記錄下來(當初建立的時候給根目錄分配的磁盤過小了.ahhhhh)node
[root@centos7 ~]# fdisk /dev/sda [root@centos7 ~]# partprobe /dev/sda #使kernel從新讀取分區 信息,從而避免重啓系統。
[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 # 命令使系統從新讀取大小 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 文件系統 容量 已用 可用 已用% 掛載點 /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
這是一種狀況,還有另外一種狀況,我就再也不舉例了,我前面博客有詳細介紹centos