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最新推荐文章于 2023-12-05 11:31:08 发布

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最新推荐文章于 2023-12-05 11:31:08 发布

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分类专栏： Linux学习文章标签： linux 运维 centos

本文链接：https://blog.youkuaiyun.com/qq_39266652/article/details/122151325

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fdisk查询系统分区
利用fdisk命令对硬盘进行分区
fdisk /dev/nvme0n2
使用fdisk将修改类型为LVM
重启系统，否则无法扩充新分区
格式化该新添加的分区
mkfs.xfs /dev/nvme0n2p1
扩充新分区

      [root@localhost ~]# pvcreate /dev/nvme0n2p1
      WARNING: xfs signature detected on /dev/nvme0n2p1 at offset 0. Wipe it? [y/n]: y
        Wiping xfs signature on /dev/nvme0n2p1.
        Physical volume "/dev/nvme0n2p1" successfully created.
      [root@localhost ~]# vgs
        VG   #PV #LV #SN Attr   VSize   VFree
        rhel   1   2   0 wz--n- <19.00g    0 
      [root@localhost ~]# vgextend rhel /dev/nvme0n2p1
        Volume group "rhel" successfully extended
      [root@localhost ~]# vgs
        VG   #PV #LV #SN Attr   VSize  VFree  
        rhel   2   2   0 wz--n- 38.99g <20.00g
      [root@localhost ~]# lvs
        LV   VG   Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
        root rhel -wi-ao---- <17.00g                                                    
        swap rhel -wi-ao----   2.00g                                                    
      [root@localhost ~]# lvextend /dev/rhel/root /dev/nvme0n2p1
        Size of logical volume rhel/root changed from <17.00 GiB (4351 extents) to 36.99 GiB (9470 extents).
        Logical volume rhel/root successfully resized.
      [root@localhost ~]# lvs
        LV   VG   Attr       LSize  Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
        root rhel -wi-ao---- 36.99g                                                    
        swap rhel -wi-ao----  2.00g

使用blkid 来查看该逻辑卷的文件格式

   [root@localhost ~]# blkid /dev/mapper/rhel-root 
   /dev/mapper/rhel-root: UUID="b8c5c828-eeae-4819-8c62-ac6c9bc13a68" BLOCK_SIZE="512" TYPE="xfs"

这个是xfs文件格式，所以我们要用xfs_growfs来对挂载目录在线扩容

   [root@localhost ~]# xfs_growfs /
   meta-data=/dev/mapper/rhel-root  isize=512    agcount=4, agsize=1113856 blks
            =                       sectsz=512   attr=2, projid32bit=1
            =                       crc=1        finobt=1, sparse=1, rmapbt=0
            =                       reflink=1
   data     =                       bsize=4096   blocks=4455424, imaxpct=25
            =                       sunit=0      swidth=0 blks
   naming   =version 2              bsize=4096   ascii-ci=0, ftype=1
   log      =internal log           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 9697280