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如何在云环境中删除分区并为用户创建新分区

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如何在云环境中删除分区并为用户创建新分区

我正在使用具有 8G 根目录的 AWS 环境，并且一开始只有 1.4G 的可用空间。

$ df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/xvda1      8.0G  6.7G  1.4G  83% /
devtmpfs        7.8G     0  7.8G   0% /dev
tmpfs           7.8G  4.0K  7.8G   1% /dev/shm
tmpfs           7.8G   17M  7.8G   1% /run
tmpfs           7.8G     0  7.8G   0% /sys/fs/cgroup
/dev/xvdc1       30G  1.4G   27G   5% /data
/dev/xvdb1       30G   45M   28G   1% /appl
tmpfs           1.6G     0  1.6G   0% /run/user/601

$ lsblk
NAME    MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
xvda    202:0    0   8G  0 disk
└─xvda1 202:1    0   8G  0 part /
xvdb    202:16   0  30G  0 disk
└─xvdb1 202:17   0  30G  0 part /appl
xvdc    202:32   0  30G  0 disk
└─xvdc1 202:33   0  30G  0 part /data

从现在开始我需要安装许多 rpm，它们将进入/usr。由于它在云端，我没有 root 登录，也无法安装 CD。我想我也无法启动到救援模式。

我尝试了以下方法来扩展空间，/usr但没有成功。

  • 调整/dev/xvdc1/usr 的大小并释放空间，出现逻辑卷路径无效的错误。

    $ sudo umount /dev/xvdb1
$ sudo e2fsck -f /dev/xvdb1
e2fsck 1.42.9 (28-Dec-2013)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
/dev/xvdb1: 13/1966080 files (0.0% non-contiguous), 167455/7864064 blocks
$ sudo resize2fs /dev/xvdb1 10G
resize2fs 1.42.9 (28-Dec-2013)
Resizing the filesystem on /dev/xvdb1 to 2621440 (4k) blocks.
The filesystem on /dev/xvdb1 is now 2621440 blocks long.

$ sudo lvreduce -L 10G /dev/xvdb1
  "/dev/xvdb1": Invalid path for Logical Volume.
  Run `lvreduce --help' for more information.
$ sudo lvresize -L 10G /dev/xvdb1
  "/dev/xvdb1": Invalid path for Logical Volume.
  Run `lvresize --help' for more information.
$ sudo lvreduce -L 10G /dev/xvdb/xvdb1
  Volume group "xvdb" not found
  Cannot process volume group xvdb

  • 按照此步骤清理/appl并/usr安装/dev/xvdb1关联，完成后，我丢失了所有命令......

    $ sudo rm -rf /appl/*
$ sudo rsync -a /usr /appl
$ sudo umount /appl
$ sudo cat /etc/fstab

#
# /etc/fstab
# Created by anaconda on Mon May  1 18:59:01 2017
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
UUID=29342a0b-e20f-4676-9ecf-dfdf02ef6683 /                       xfs     defaults        0 0
/dev/xvdb1      /usr    ext4    defaults        0       0
/dev/xvdc1      /data   ext4    noatime 0       1
$ sudo mount /dev/xvdb1 /usr
$ df -h
-bash: /usr/bin/df: No such file or directory

我想知道是否有办法实现它。提前谢谢！

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