執行 tro bit val strong attr nal bad e2fs

將原硬盤上的LVM分區/dev/mapper/RHEL-Data由原來的60G擴展到80G

Step1:將LVData擴容+20G，如下圖：

[root@esc data]# lvextend -L +20G /dev/RHEL/Data
Size of logical volume RHEL/Data changed from 60.00 GiB (15360 extents) to 80.00 GiB (20480 extents).
Logical volume RHEL/Data successfully resized.
[root@esc data]#

Step2:檢查LV，如下圖：

[root@esc data]# e2fsck -f /dev/RHEL/Data
e2fsck 1.42.9 (28-Dec-2013)
/dev/RHEL/Data is mounted.
e2fsck: Cannot continue, aborting.

[root@esc data]#

Step3:重新定義分區大小，如下圖：

[root@esc ~]# resize2fs /dev/RHEL/Data
resize2fs 1.42.9 (28-Dec-2013)
resize2fs: Bad magic number in super-block while trying to open /dev/RHEL/Data //EXT4的擴容使用 resize2fs
Couldn‘t find valid filesystem superblock.
[root@esc ~]#

[root@esc ~]# xfs_growfs /dev/RHEL/Data //XFS擴容使用xfs_growfs

meta-data=/dev/mapper/RHEL-Data isize=256 agcount=4, agsize=3932160 blks
= sectsz=512 attr=2, projid32bit=1
= crc=0 finobt=0
data = bsize=4096 blocks=15728640, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=0
log =internal bsize=4096 blocks=7680, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 15728640 to 20971520
[root@esc ~]#

Step4:查看擴容後的分區容量，如下圖：

[root@esc ~]# df -h
Filesystem Size Used Avail Use% Mounted on
devtmpfs 1.9G 0 1.9G 0% /dev
tmpfs 2.0G 0 2.0G 0% /dev/shm
tmpfs 2.0G 8.5M 2.0G 1% /run
tmpfs 2.0G 0 2.0G 0% /sys/fs/cgroup
/dev/mapper/centos-root 45G 3.5G 41G 8% /
/dev/sda1 497M 164M 333M 33% /boot
/dev/mapper/centos-home 22G 33M 22G 1% /home
tmpfs 393M 0 393M 0% /run/user/1000
/dev/mapper/RHEL-Data 80G 21G 60G 26% /data //從原來60G擴展到了80G

將原硬盤上的LVM分區/dev/mapper/RHEL-Data由原來的80G擴展到60G

e2fsck -f /dev/RHEL/Data #檢查磁盤錯誤 （針對ext4執行）

resize2fs /dev/RHEL/Data 60G #更新邏輯卷信息（針對ext4執行）

lvresize -L 20G /dev/RHEL/Data #重新設定大小

註意：XFS文件系統不支持縮容。

Linux LVM擴容和縮容