在我们lvextend扩容完之后，想动态扩容时出现错误。我们可以用以下命令来进行操作。
若不是xfs我们可以用resize2fs，这里报错了
[root@Mysql01-213-66 ~]# resize2fs -f /dev/mapper/vg_mysql0121366-LogVol01
resize2fs 1.41.12 (17-May-2010) resize2fs: Bad magic number in super-block while trying to open /dev/mapper/vg_mysql0121366-LogVol01 Couldn't find valid filesystem superblock. [root@Mysql01-213-66 ~]# xfs_growfs /dev/mapper/vg_mysql0121366-LogVol01 meta-data=/dev/mapper/vg_mysql0121366-LogVol01 isize=256 agcount=4, agsize=524288 blks = sectsz=512 attr=2, projid32bit=0 data = bsize=4096 blocks=2097152, imaxpct=25 = sunit=0 swidth=0 blks naming =version 2 bsize=4096 ascii-ci=0 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 2097152 to 7077888 [root@Mysql01-213-66 ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/vg_mysql0121366-LogVol02 7.7G 2.6G 4.8G 35% / tmpfs 495M 0 495M 0% /dev/shm /dev/sda1 194M 29M 155M 16% /boot /dev/mapper/vg_mysql0121366-LogVol01 27G 3.1G 24G 12% /data