今天在進(jìn)行l(wèi)vm擴(kuò)容之后，按照慣例進(jìn)行 resize2fs 操作，發(fā)現(xiàn)報(bào)如下錯(cuò)誤：

# resize2fs /dev/centos/root 
      resize2fs 1.42.9 (28-Dec-2013)
      resize2fs: Bad magic number in super-block while trying to open /dev/centos/root
      Couldn't find valid filesystem superblock.

檢查 /dev/centos/root 文件系統(tǒng)，發(fā)現(xiàn)是xfs，如下;

# mount |grep root
      /dev/mapper/centos-root on / type xfs (rw,relatime,attr2,inode64,noquota)

xfs的文件系統(tǒng)重新定義大小用如下命令：

# xfs_growfs /dev/mapper/centos-root 
   meta-data=/dev/mapper/centos-root isize=256 agcount=4, agsize=3276800 blks
   = sectsz=512 attr=2, projid32bit=1
   = crc=0 finobt=0
   data = bsize=4096 blocks=13107200, imaxpct=25
   = sunit=0 swidth=0 blks
   naming =version 2 bsize=4096 ascii-ci=0 ftype=0
   log =internal bsize=4096 blocks=6400, version=2
   = sectsz=512 sunit=0 blks, lazy-count=1
   realtime =none extsz=4096 blocks=0, rtextents=0
   data blocks changed from 13107200 to 39336960

重新進(jìn)行df -h查看掛載點(diǎn)，發(fā)現(xiàn)大小已經(jīng)更改。