![zfs 强制导入多个 VMS(ID),现在找不到 VM,但根据 zfs 的说法,它并没有丢失?](https://linux22.com/image/789829/zfs%20%E5%BC%BA%E5%88%B6%E5%AF%BC%E5%85%A5%E5%A4%9A%E4%B8%AA%20VMS%EF%BC%88ID%EF%BC%89%EF%BC%8C%E7%8E%B0%E5%9C%A8%E6%89%BE%E4%B8%8D%E5%88%B0%20VM%EF%BC%8C%E4%BD%86%E6%A0%B9%E6%8D%AE%20zfs%20%E7%9A%84%E8%AF%B4%E6%B3%95%EF%BC%8C%E5%AE%83%E5%B9%B6%E6%B2%A1%E6%9C%89%E4%B8%A2%E5%A4%B1%EF%BC%9F.png)
我对 ZFS 完全陌生。今天,我做了一件蠢事,导致需要恢复整个操作系统。在我用来恢复机器的实时操作系统上,我需要安装 ZFS 卷进行数据传输。我做了以下操作:
root@kubuntu:/media/kubuntu/backup3-1tb/recovery# zpool import
pool: nas-2-mirror
id: 11643301469609613604
state: ONLINE
status: The pool was last accessed by another system.
action: The pool can be imported using its name or numeric identifier and
the '-f' flag.
see: https://openzfs.github.io/openzfs-docs/msg/ZFS-8000-EY
config:
nas-2-mirror ONLINE
mirror-0 ONLINE
usb-SanDisk_Extreme_55AE_32333135314D343031353938-0:0 ONLINE
usb-SanDisk_Extreme_55AE_32333135325A343030313338-0:0 ONLINE
pool: nas-1-mirror
id: 10379406262813511849
state: ONLINE
status: The pool was last accessed by another system.
action: The pool can be imported using its name or numeric identifier and
the '-f' flag.
see: https://openzfs.github.io/openzfs-docs/msg/ZFS-8000-EY
config:
nas-1-mirror ONLINE
mirror-0 ONLINE
usb-SanDisk_Extreme_55AE_32333135314D343031323130-0:0 ONLINE
usb-SanDisk_Extreme_55AE_323331363748343030333133-0:0 ONLINE
root@kubuntu:/media/kubuntu/backup3-1tb/recovery# zpool import -f
pool: nas-2-mirror
id: 11643301469609613604
state: ONLINE
status: The pool was last accessed by another system.
action: The pool can be imported using its name or numeric identifier and
the '-f' flag.
see: https://openzfs.github.io/openzfs-docs/msg/ZFS-8000-EY
config:
nas-2-mirror ONLINE
mirror-0 ONLINE
usb-SanDisk_Extreme_55AE_32333135314D343031353938-0:0 ONLINE
usb-SanDisk_Extreme_55AE_32333135325A343030313338-0:0 ONLINE
pool: nas-1-mirror
id: 10379406262813511849
state: ONLINE
status: The pool was last accessed by another system.
action: The pool can be imported using its name or numeric identifier and
the '-f' flag.
see: https://openzfs.github.io/openzfs-docs/msg/ZFS-8000-EY
config:
nas-1-mirror ONLINE
mirror-0 ONLINE
usb-SanDisk_Extreme_55AE_32333135314D343031323130-0:0 ONLINE
usb-SanDisk_Extreme_55AE_323331363748343030333133-0:0 ONLINE
root@kubuntu:/media/kubuntu/backup3-1tb/recovery# zpool import -f 11643301469609613604 10379406262813511849
cannot import '10379406262813511849': name must begin with a letter
root@kubuntu:/media/kubuntu/backup3-1tb/recovery# zpool import -f nas-1-mirror nas-2-mirror <<<==== THIS
现在nas-2-mirror
好了!
root@kubuntu:~# zpool status
pool: nas-2-mirror
state: ONLINE
config:
NAME STATE READ WRITE CKSUM
nas-2-mirror ONLINE 0 0 0
mirror-0 ONLINE 0 0 0
usb-SanDisk_Extreme_55AE_32333135314D343031323130-0:0 ONLINE 0 0 0
usb-SanDisk_Extreme_55AE_323331363748343030333133-0:0 ONLINE 0 0 0
errors: No known data errors
但是,nas-1-mirror
找不到。我尝试使用它的 ID 重新导入它:
root@kubuntu:~# zpool import -f 10379406262813511849
cannot import '10379406262813511849': a pool with that name already exists
use the form 'zpool import <pool | id> <newpool>' to give it a new name
root@kubuntu:~# zpool list
NAME SIZE ALLOC FREE CKPOINT EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT
nas-2-mirror 1.81T 40.1G 1.77T - - 0% 2% 1.00x ONLINE -
我想也许我通过同时导入两个卷弄乱了卷的名称,所以我采纳了上面导入的帮助建议,并尝试重命名该卷
root@kubuntu:~# zpool import -f 10379406262813511849 nas-1-mirror
cannot import '10379406262813511849': no such pool available
我想也许我可以尝试安装它?
root@kubuntu:~# zfs mount nas-1-mirror
cannot open 'nas-1-mirror': dataset does not exist
root@kubuntu:~# zfs list -o name,canmount,mountpoint
NAME CANMOUNT MOUNTPOINT
nas-2-mirror on /nas/nas-media
我有点担心。有人有其他方法可以让我试试吗?
编辑
啊哈!我明白我做了什么。我的导入将 ID 重命名为参数中第二个参数使用的 ID。
root@kubuntu:~# zpool list -o guid nas-2-mirror
GUID
10379406262813511849
所以我需要弄清楚如何撤消此操作。
https://forums.freebsd.org/threads/renaming-zfs-pool-via-zpool-import-mypool-newpoolname.46300/是相关的(第二个问题),但没有关于如何解决该问题的明确答案。我尝试使用,zpool import -fa
但得到:
root@kubuntu:~# zpool import -fa
cannot import 'nas-2-mirror': pool already exists
可能的解决方案
我暂时还不能尝试,但也许可以:https://illumos.org/books/zfs-admin/gavwn.html
部分:4.1.1. Using Disks in a ZFS Storage Pool
如果您不小心更改了设备的路径和 ID,请导出并重新导入池才能使用它。
当我可以时,我会尝试这个建议,看看它能给我带来什么。我会相应地发布。
我还看到zfs
公开了一个rename
命令,所以我也会尝试这个:
zfs rename 10379406262813511849 nas-1-mirror
手术做完之后我就开始工作了。我不想无意中弄乱任何东西。
答案1
首先请注意,对于任何使用此功能的人来说,都需要确保他们正在安全地使用他们的卷。 就我而言,我正在运行“实时”Ubuntu 会话。
好的!我能够很轻松地修复此问题。我必须采取的步骤如下:
- 导出已挂载的池
root@kubuntu:/# zpool export nas-2-mirror
- 将错误导入的 UID 导入到旧池名称(有效地将其重命名为我搞砸之前的名称......)
root@kubuntu:/# zpool import 10379406262813511849 nas-1-mirror
- 导入原始的 nas-2-mirror(强制导入并按 ID 导入,因为它在我的操作系统混乱中无意中丢失了(前面提到过)并且...
root@kubuntu:/# zpool import 11643301469609613604 nas-2-mirror
cannot import 'nas-2-mirror': pool was previously in use from another system.
Last accessed by your-linux-host (hostid=44ddb8ce) at Fri Oct 6 13:52:02 2023
The pool can be imported, use 'zpool import -f' to import the pool.
root@kubuntu:/# zpool import -f 11643301469609613604 nas-2-mirror
最后,检查一切是否正常:
root@kubuntu:/# zpool list
NAME SIZE ALLOC FREE CKPOINT EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT
nas-1-mirror 1.81T 234G 1.58T - - 0% 12% 1.00x ONLINE -
nas-2-mirror 1.81T 35.7G 1.78T - - 0% 1% 1.00x ONLINE -