---
title: "Proxmox更换ZFS系统盘"
id: "261"
type: "post"
slug: "proxmox%e6%9b%b4%e6%8d%a2zfs%e7%b3%bb%e7%bb%9f%e7%9b%98"
published_at: "2020-01-02T14:10:52+00:00"
modified_at: "2020-01-02T14:46:44+00:00"
url: "https://www.hitsword.org/2020/261.html"
markdown_url: "https://www.hitsword.org/2020/261.md"
excerpt: "之前配置的Proxmox服务器系统盘一律使用ZFS Mirror模式，前段时间SMART提示有个硬盘有坏道了。 […]"
taxonomy_category:
  - "Proxmox"
taxonomy_post_tag:
  - "Proxmox"
  - "ZFS"
---

# Proxmox更换ZFS系统盘

之前配置的Proxmox服务器系统盘一律使用ZFS Mirror模式，前段时间SMART提示有个硬盘有坏道了。拿了个新盘替换上去，做个笔记记录一下操作流程。  
 首先查看一下ZFS池状态：

```
root@g1-pve2:~# zpool status -v
  pool: rpool
 state: ONLINE
  scan: scrub repaired 0B in 0h41m with 0 errors on Sun Dec  8 01:05:19 2019
config:
	NAME        STATE     READ WRITE CKSUM
	rpool       ONLINE       0     0     0
	  mirror-0  ONLINE       0     0     0
	    sda2    ONLINE       0     0     0
	    sdb2    ONLINE       0     0     0
errors: No known data errors
```

  
 上面看到ZFS池没有什么报错，硬盘还是存在的。我们已知SMART报错的是sdb这个盘。拔下来后再查看状态：  
```
root@g1-pve2:~# zpool status -v
  pool: rpool
 state: DEGRADED
status: One or more devices could not be used because the label is missing or
    invalid.  Sufficient replicas exist for the pool to continue
    functioning in a degraded state.
action: Replace the device using 'zpool replace'.
   see: http://zfsonlinux.org/msg/ZFS-8000-4J
  scan: none requested
config:
	NAME        STATE     READ WRITE CKSUM
	rpool       DEGRADED     0     0     0
	  mirror-0  DEGRADED     0     0     0
	    sda2    ONLINE       0     0     0
	    sdb2    FAULTED      0     0     0
```

  
 上面看到sdb2是FAULTED状态，我们的盘是热拔的。好像冷拔盘后显示的是一串ID。记住要替换的盘符sdb2或者那一串ID，准备后面使用。然后插入新盘，并找到新盘的盘符：  
```
ls -lh /dev/disk/by-id
```

  
 插入新盘后，通过硬盘标签上的SN号和上面命令输出的结果，找到对应的盘符，我这里还是sdb，然后通过健康的sda盘复制分区表并分配一个新的GUID。(应该是因为我这里还是热插拔，所以盘符一样)  
**警告!下面危险操作**  
```
#sgdisk -R /dev/新盘 /dev/健康盘
#sgdisk -G /dev/新盘
sgdisk -R /dev/sdb /dev/sda
sgdisk -G /dev/sdb
```

  
 然后复制分区数据:  
```
#dd if=/dev/健康盘 of=/dev/新盘 bs=512
dd if=/dev/sda1 of=/dev/sdb1 bs=512
dd if=/dev/sda9 of=/dev/sdb9 bs=512
```

  
 然后还原到zpool和安装grub引导  
```
#zpool replace rpool 旧盘符或ID /dev/新盘符
zpool replace rpool sdb2 /dev/sdb2
grub-install /dev/sdb
```

  
 最后等待恢复数据完成后重启：  
```
root@g1-pve2:~# zpool status -v
  pool: rpool
 state: DEGRADED
status: One or more devices is currently being resilvered.  The pool will
    continue to function, possibly in a degraded state.
action: Wait for the resilver to complete.
  scan: resilver in progress since Sun Dec  8 01:20:19 2019
    91.9M scanned out of 1.87T at 7.66M/s, 71h0m to go
    22.6M resilvered, 0.00% done
config:
	NAME               STATE     READ WRITE CKSUM
	rpool              DEGRADED     0     0     0
	  mirror-0         DEGRADED     0     0     0
	    sda2           ONLINE       0     0     0
        replacing-1    UNAVAIL      0     0     0
          sdb2         FAULTED      0     0     0  was /dev/sdb2
          sdb2         ONLINE       0     0     0  (resilvering)
errors: No known data errors
```

  
 等待上面所有state都是ONLINE后就可以重启啦。 参考资料：  
 https://edmondscommerce.github.io/replacing-failed-drive-in-zfs-zpool-on-proxmox/  
 https://www.oxcrag.net/2018/09/02/replacing-zfs-system-drives-in-proxmox/