TrueNAS中的系统盘池不能在GUI中直接操作，所以需要敲点命令来替换坏盘，这里做个记录

首先查看zfs状态

# zpool status
 pool: boot-pool
 state: DEGRADED
status: One or more devices are faulted in response to persistent errors.
        Sufficient replicas exist for the pool to continue functioning in a
        degraded state.
action: Replace the faulted device, or use 'zpool clear' to mark the device
        repaired.
  scan: scrub repaired 0B in 00:00:39 with 0 errors on Sat Nov  4 03:45:40 2023
config:

        NAME        STATE     READ WRITE CKSUM
        boot-pool   DEGRADED     0     0     0
          mirror-0  DEGRADED     0     0     0
            sdc3    FAULTED      2    17     0  too many errors
            sdd3    ONLINE       0     0     0

可以看到是sdc这块盘不行了，所以我们要替换它。

首先把它offline：

zpool offline boot-pool sdc3

然后把这块盘拔了，插进新盘，去web gui的磁盘页面看看新盘获得的盘号叫什么，我这里分配到了sde，所以接下来使用sde替换sdc3

zpool replace -f boot-pool sdc3 sde

由于boot-pool的内容其实很少，所以稍微等一会儿就同步好了，期间可以继续用`zpool status`查看同步状态。