EC2 增加大小后无法调整卷大小 [英] EC2 Can't resize volume after increasing size

问题描述

我已按照调整 EC2 卷大小的步骤进行操作

1. 停止实例
2. 拍摄当前卷的快照
3. 在同一个区域中从上一个快照创建一个更大的新卷
4. 从实例中分离旧卷
5. 将新卷附加到同一挂载点的实例

旧卷是 5GB 而我创建的卷是 100GB现在，当我重新启动实例并运行 df -h I 仍然看到这个

已使用的文件系统大小 Avail Use% Mounted on/dev/xvde1 4.7G 3.5G 1021M 78%/tmpfs 296M 0 296M 0%/dev/shm

这是我运行时得到的

sudo resize2fs/dev/xvde1文件系统已经有 1247037 个块长.没事做！

如果我运行 cat/proc/partitions 我看到

 202 64 104857600 xvde202 65 4988151 xvde1202 66 249007 xvde2

据我所知，如果我遵循了正确的步骤，xvde 应该具有与 xvde1 相同的数据，但我不知道如何使用它

如何使用新卷或卸载 xvde1 并挂载 xvde?

我无法理解我做错了什么

我也试过 sudo ifs_growfs/dev/xvde1

xfs_growfs:/dev/xvde1 不是挂载的 XFS 文件系统

顺便说一句，这是一个带有 centos 6.2 x86_64 的 linux 机器

预先感谢您的帮助

解决方案

谢谢 Wilman，你的命令工作正常，如果我们将 EBS 增加到更大的尺寸，需要考虑一些小的改进

1. 停止实例
2. 从卷创建快照
3. 根据增加大小的快照创建新卷
4. 检查并记住当前的卷挂载点(即/dev/sda1)
5. 分离当前音量
6. 将最近创建的卷附加到实例，设置确切的挂载点
7. 重启实例

8. 通过 SSH 访问实例并运行 fdisk/dev/xvde

   警告:不推荐使用 DOS 兼容模式.强烈建议关闭模式(命令c")并将显示单位更改为扇区(命令u")

9. 点击p显示当前分区

10. 点击d删除当前分区(如果有多个，你必须一次删除一个)注意:不要担心数据不会丢失
11. 点击n创建一个新分区
12. 点击 p 将其设置为主
13. 点击1设置第一个圆柱
14. 设置所需的新空间(如果为空则保留整个空间)
15. 点击 a 使其可启动
16. 点击 1 和 w 写入更改
17. 重启实例或使用partprobe(来自parted包)将新的分区表告诉内核
18. 通过 SSH 登录并运行 resize2fs/dev/xvde1
19. 最后检查运行df -h的新空间

I have followed the steps for resizing an EC2 volume

1. Stopped the instance
2. Took a snapshot of the current volume
3. Created a new volume out of the previous snapshot with a bigger size in the same region
4. Deattached the old volume from the instance
5. Attached the new volume to the instance at the same mount point

Old volume was 5GB and the one I created is 100GB Now, when i restart the instance and run df -h I still see this

Filesystem            Size  Used Avail Use% Mounted on
/dev/xvde1            4.7G  3.5G 1021M  78% /
tmpfs                 296M     0  296M   0% /dev/shm

This is what I get when running

sudo resize2fs /dev/xvde1

The filesystem is already 1247037 blocks long.  Nothing to do!

If I run cat /proc/partitions I see

 202       64  104857600 xvde
 202       65    4988151 xvde1
 202       66     249007 xvde2

From what I understand if I have followed the right steps xvde should have the same data as xvde1 but I don't know how to use it

How can I use the new volume or umount xvde1 and mount xvde instead?

I cannot understand what I am doing wrong

I also tried sudo ifs_growfs /dev/xvde1

xfs_growfs: /dev/xvde1 is not a mounted XFS filesystem

Btw, this a linux box with centos 6.2 x86_64

Thanks in advance for your help

解决方案

Thank you Wilman your commands worked correctly, small improvement need to be considered if we are increasing EBSs into larger sizes

1. Stop the instance
2. Create a snapshot from the volume
3. Create a new volume based on the snapshot increasing the size
4. Check and remember the current's volume mount point (i.e. /dev/sda1)
5. Detach current volume
6. Attach the recently created volume to the instance, setting the exact mount point
7. Restart the instance

8. Access via SSH to the instance and run fdisk /dev/xvde

   WARNING: DOS-compatible mode is deprecated. It's strongly recommended to switch off the mode (command 'c') and change display units to sectors (command 'u')

9. Hit p to show current partitions

10. Hit d to delete current partitions (if there are more than one, you have to delete one at a time) NOTE: Don't worry data is not lost
11. Hit n to create a new partition
12. Hit p to set it as primary
13. Hit 1 to set the first cylinder
14. Set the desired new space (if empty the whole space is reserved)
15. Hit a to make it bootable
16. Hit 1 and w to write changes
17. Reboot instance OR use partprobe (from the parted package) to tell the kernel about the new partition table
18. Log via SSH and run resize2fs /dev/xvde1
19. Finally check the new space running df -h

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