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linux下增加usr本地容量的方法有哪些？

tag-icon • tag-icon lvm disk volume
linux下增加usr本地容量的方法有哪些？

我有一个 Linux 生产虚拟机，我需要增加/usr/local文件夹空间。我已经附加了一个分区并格式化的容量为300 GB的磁盘，如下所示。

[root@CentOS6-4SVR ~]# df -hT
Filesystem           Type   Size  Used Avail Use% Mounted on
/dev/mapper/VolGroup-lv_root
                     ext4   433G  373G   39G  91% /
tmpfs                tmpfs  3.9G     0  3.9G   0% /dev/shm
/dev/xvda1           ext4   477M   46M  406M  11% /boot
/dev/mapper/VolGroup-lv_home
                     ext4    41G   10G   29G  26% /home

[root@CentOS6-4SVR ~]# lsblk              
NAME                        MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
xvdb                        202:16   0  400G  0 disk 
└─VolGroup-lv_root (dm-0)   253:0    0  440G  0 lvm  /
xvda                        202:0    0  100G  0 disk 
├─xvda1                     202:1    0  500M  0 part /boot
└─xvda2                     202:2    0 99.5G  0 part 
  ├─VolGroup-lv_root (dm-0) 253:0    0  440G  0 lvm  /
  ├─VolGroup-lv_swap (dm-1) 253:1    0  7.8G  0 lvm  [SWAP]
  └─VolGroup-lv_home (dm-2) 253:2    0 41.7G  0 lvm  /home
xvdc                        202:32   0  300G  0 disk 

[root@CentOS6-4SVR ~]# vgdisplay          
  --- Volume group ---
  VG Name               VolGroup
  System ID             
  Format                lvm2
  Metadata Areas        2
  Metadata Sequence No  7
  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               499.50 GiB
  PE Size               4.00 MiB
  Total PE              127873
  Alloc PE / Size       125314 / 489.51 GiB
  Free  PE / Size       2559 / 10.00 GiB
  VG UUID               jH8M8M-P8ey-apiK-888r-OhDj-ERSf-bn13N9

请提及可用的方法来做到这一点？

编辑01

我尝试按如下方式扩展，但出现以下错误。请指教。

[root@csc-akaza-test-01 ~]# pvcreate /dev/xvdc
  Couldn't find device with uuid gBPzEJ-Ir84-Q8pw-IJ8J-Bh10-ISIy-1snfWG.
  Couldn't find device with uuid d4eTfV-HR7R-TLeH-tYgy-e2JC-B6sl-d5ysHa.
  Physical volume "/dev/xvdc" successfully created

[root@csc-akaza-test-01 ~]# vgextend VolGroup /dev/xvdc
  Couldn't find device with uuid gBPzEJ-Ir84-Q8pw-IJ8J-Bh10-ISIy-1snfWG.
  Couldn't find device with uuid d4eTfV-HR7R-TLeH-tYgy-e2JC-B6sl-d5ysHa.
  Volume group "VolGroup" successfully extended

[root@csc-akaza-test-01 ~]# lvresize -r -l 100%FREE VolGroup/lv_root
  Couldn't find device with uuid gBPzEJ-Ir84-Q8pw-IJ8J-Bh10-ISIy-1snfWG.
  Couldn't find device with uuid d4eTfV-HR7R-TLeH-tYgy-e2JC-B6sl-d5ysHa.
  Cannot change VG VolGroup while PVs are missing.
  Consider vgreduce --removemissing.
  Cannot process volume group VolGroup

答案1

由于您已经使用 LVM 并且没有安装文件系统/usr/local，因此您可以简单地将新磁盘（实际上是分区）添加到卷组，然后增加根逻辑卷和文件系统的大小：

pvcreate /dev/xvdc1
vgextend VolGroup /dev/xvdc1
lvresize -r -l 100%FREE VolGroup/lv_root

警告

您正在处理一个生产系统。确保您理解上面显示的命令前你使用它们。遵循我的建议，您对可能发生的任何事情承担全部责任。

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