[root@backup binlog]# vgdisplay
--- Volume group ---
VG Name centos
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 8
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 3
Open LV 3
Max PV 0
Cur PV 2
Act PV 2
VG Size 2.73 TiB
PE Size 4.00 MiB
Total PE 715273
Alloc PE / Size 712822 / 2.72 TiB
Free PE / Size 2451 / 9.57 GiB
VG UUID 6rIzMZ-cqff-oWy6-0EvS-YENe-37U9-65SunU
[root@backup binlog]# lvextend -L +4G /dev/mapper/centos-home
Size of logical volume centos/home changed from 2.66 TiB (697542 extents) to 2.66 TiB (698566 extents).
Logical volume home successfully resized.
执行resize2fs报错:
[root@backup binlog]# resize2fs /dev/mapper/centos-home
resize2fs 1.42.9 (28-Dec-2013)
resize2fs: Bad magic number in super-block 当尝试打开 /dev/mapper/centos-home 时
找不到有效的文件系统超级块.
确认文件系统是xfs:
[root@backup binlog]# cat /etc/fstab | grep centos-home
/dev/mapper/centos-home /home xfs defaults 0 0
xfs用以下命令来扩磁盘空间:
[root@backup binlog]# xfs_growfs /dev/mapper/centos-home
meta-data=/dev/mapper/centos-home isize=256 agcount=6, agsize=118277632 blks
= sectsz=4096 attr=2, projid32bit=1
= crc=0 finobt=0
data = bsize=4096 blocks=709040128, imaxpct=5
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=0
log =internal bsize=4096 blocks=231011, version=2
= sectsz=4096 sunit=1 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 709040128 to 715331584
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