• resize2fs: Bad magic number in super-block while trying to open


    os: centos 7.4

    [root@node1 ~]# pvs
      PV         VG     Fmt  Attr PSize   PFree 
      /dev/sda2  centos lvm2 a--  <19.00g     0 
      /dev/sda3  centos lvm2 a--  <30.00g <2.00g
    [root@node1 ~]# vgs
      VG     #PV #LV #SN Attr   VSize  VFree 
      centos   2   2   0 wz--n- 48.99g <2.00g
    [root@node1 ~]# lvs
      LV   VG     Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
      root centos -wi-ao---- <45.00g                                                    
      swap centos -wi-ao----   2.00g 
    [root@node1 ~]# df -hT
    Filesystem              Type      Size  Used Avail Use% Mounted on
    /dev/mapper/centos-root xfs        17G  5.5G   12G  33% /
    devtmpfs                devtmpfs  985M     0  985M   0% /dev
    tmpfs                   tmpfs    1001M     0 1001M   0% /dev/shm
    tmpfs                   tmpfs    1001M  8.8M  992M   1% /run
    tmpfs                   tmpfs    1001M     0 1001M   0% /sys/fs/cgroup
    /dev/sda1               xfs      1014M  160M  855M  16% /boot
    tmpfs                   tmpfs     201M  8.0K  201M   1% /run/user/42
    tmpfs                   tmpfs     201M     0  201M   0% /run/user/0

    使用 resize2fs时,提示错误

    [root@node1 ~]# resize2fs /dev/mapper/centos-root 
    resize2fs 1.42.9 (28-Dec-2013)
    resize2fs: Bad magic number in super-block while trying to open /dev/mapper/centos-root
    Couldn't find valid filesystem superblock.

    了解后发现,xfs格式的文件扩充需要使用 xfs_growfs

    [root@node1 ~]# xfs
    xfs_admin      xfs_db         xfs_freeze     xfs_info       xfs_logprint   xfs_mkfile     xfs_repair     
    xfs_bmap       xfsdump        xfs_fsr        xfsinvutil     xfs_mdrestore  xfs_ncheck     xfsrestore     
    xfs_copy       xfs_estimate   xfs_growfs     xfs_io         xfs_metadump   xfs_quota      xfs_rtcp       
    [root@node1 ~]# xfs_growfs /dev/mapper/centos-root
    meta-data=/dev/mapper/centos-root isize=512    agcount=4, agsize=1113856 blks
             =                       sectsz=512   attr=2, projid32bit=1
             =                       crc=1        finobt=0 spinodes=0
    data     =                       bsize=4096   blocks=4455424, 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 4455424 to 11795456
    [root@node1 ~]# df -hT
    Filesystem              Type      Size  Used Avail Use% Mounted on
    /dev/mapper/centos-root xfs        45G  5.5G   40G  13% /
    devtmpfs                devtmpfs  985M     0  985M   0% /dev
    tmpfs                   tmpfs    1001M     0 1001M   0% /dev/shm
    tmpfs                   tmpfs    1001M  8.8M  992M   1% /run
    tmpfs                   tmpfs    1001M     0 1001M   0% /sys/fs/cgroup
    /dev/sda1               xfs      1014M  160M  855M  16% /boot
    tmpfs                   tmpfs     201M  8.0K  201M   1% /run/user/42
    tmpfs                   tmpfs     201M     0  201M   0% /run/user/0
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  • 原文地址:https://www.cnblogs.com/ctypyb2002/p/9792953.html
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