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是否以及如何删除btrfs qgroup

tag-icon • tag-icon btrfs snapper
是否以及如何删除btrfs qgroup

我有一个 btrfs 文件系统，正在运行 OpenSuse 15。它已升级到新的 OpenSuses 多次。第一次安装可能不在 btrfs 上。我的根分区变得有点拥挤，我无法确定它是否安全以及如何删除我认为可能是“不需要的”快照程序快照。

> df -h
Filesystem      Size  Used Avail Use% Mounted on
/dev/sda6        41G   35G  5.1G  88% /

这里有什么东西看起来适合删除吗？也许是17G qgroup？

> btrfs qgroup show /
qgroupid         rfer         excl 
--------         ----         ---- 
0/5          16.00KiB     16.00KiB 
0/257        16.00KiB     16.00KiB 
0/258        14.67MiB     14.67MiB 
....
0/710        11.28GiB    372.00KiB 
1/0          28.32GiB     17.04GiB 
255/269      16.00KiB     16.00KiB

Snapper 列出了以下快照：

> snapper list
Type   | #   | Pre # | Date                     | User | Cleanup | Description           | Userdata     
-------+-----+-------+--------------------------+------+---------+-----------------------+--------------
single | 0   |       |                          | root |         | current               |              
single | 1   |       | Sat Mar 10 04:01:52 2018 | root |         | first root filesystem |              
pre    | 177 |       | Mon Mar 11 00:37:41 2019 | root | number  | zypp(zypper)          | important=yes
post   | 178 | 177   | Mon Mar 11 00:52:40 2019 | root | number  |                       | important=yes
...
pre    | 283 |       | Sat Sep 21 02:35:12 2019 | root | number  | zypp(zypper)          | important=no 
post   | 284 | 283   | Sat Sep 21 02:36:04 2019 | root | number  |                       | important=no 
pre    | 285 |       | Sun Sep 22 12:51:57 2019 | root | number  | yast snapper          |              
post   | 286 | 285   | Sun Sep 22 12:53:04 2019 | root | number  |                       |

对我来说更多官话：

> btrfs subvol show /

@/.snapshots/1/snapshot
        Name:                   snapshot
        UUID:                   4eed144d-9dee-6447-8cd5-75c756bf2367
        Parent UUID:            df2738e0-3b0e-3d42-9cd0-da8252d015be
        Received UUID:          -
        Creation time:          2018-03-10 04:01:52 -0800
        Subvolume ID:           259
        Generation:             936168
        Gen at creation:        11
        Parent ID:              258
        Top level ID:           258
        Flags:                  -
        Snapshot(s):
                                @/.snapshots/177/snapshot
                                @/.snapshots/178/snapshot
                                @/.snapshots/179/snapshot
                                @/.snapshots/180/snapshot
                                @/.snapshots/220/snapshot
                                @/.snapshots/221/snapshot
                                @/.snapshots/234/snapshot
                                @/.snapshots/235/snapshot
                                @/.snapshots/267/snapshot
                                @/.snapshots/268/snapshot
                                @/.snapshots/281/snapshot
                                @/.snapshots/282/snapshot
                                @/.snapshots/283/snapshot
                                @/.snapshots/284/snapshot
                                @/.snapshots/285/snapshot
                                @/.snapshots/286/snapshot
                                @/.snapshots/287/snapshot
                                @/.snapshots/288/snapshot
                                @/.snapshots/289/snapshot
                                @/.snapshots/290/snapshot

请让我知道还有哪些其他信息可以提供帮助。

答案1

由于您使用的是 snapper，因此最好使用其工具来管理这些快照。无论如何都不可能删除 BTRFS 快照rm；）

要删除所有快照（“当前”除外），请运行：sudo snapper delete 1-290

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