我从一位离职同事那里继承了一套 FreeNAS 安装。该安装用于保存我们遍布全球的众多 Web 服务器的内部 rsync 备份。
FreeNAS 盒中的存储空间即将用完，我发现我们仍然有早在 2013 年就已退役的服务器的备份。我们不再需要这些旧档案，所以我想删除它们以释放一些空间。
初步结果df -h如下：
...
raid-1 283G 261G 22G 92% /mnt/raid-1
raid-1/clone-auto-20140925.0800-2m 283G 261G 22G 92% /mnt/raid-1/clone-auto-20140925.0800-2m
...
因此，我天真地删除了旧的 rsync 快照，即rm -rf /mnt/raid-1/backups/old.server.1 /mnt/raid-1/backups/old.server.2。之后，df -h现在看起来像这样：
...
raid-1 266G 244G 22G 92% /mnt/raid-1
raid-1/clone-auto-20140925.0800-2m 283G 261G 22G 92% /mnt/raid-1/clone-auto-20140925.0800-2m
...
噢噢噢
我把问题缩小到我对 ZFS 缺乏了解。显然，它df并没有以我期望的传统方式报告磁盘使用情况，简单的删除也无法解决我的问题。
如果有人能做到，我将非常感激：
请为我指明正确的方向，以便我了解 FreeNAS 如何利用 ZFS，并且- 提供一些关于如何通过删除那些古老备份的副本来释放一些空间的指导。
编辑1
我一直在阅读，现在我明白由于 ZFS 的 CoW，空间没有被释放。
输出zfs list：
NAME USED AVAIL REFER MOUNTPOINT
raid-1 1.76T 21.5G 245G /mnt/raid-1
raid-1/clone-auto-20140925.0800-2m 34.8G 21.5G 261G /mnt/raid-1/clone-auto-20140925.0800-2m
编辑2
`zfs list -t snapper` 的输出
NAME USED AVAIL REFER MOUNTPOINT
[email protected] 91.0G - 261G -
[email protected] 9.13G - 301G -
[email protected] 4.68G - 301G -
[email protected] 4.70G - 302G -
[email protected] 4.63G - 302G -
[email protected] 15.5G - 297G -
[email protected] 15.6G - 297G -
[email protected] 15.7G - 297G -
[email protected] 16.0G - 297G -
[email protected] 15.9G - 297G -
[email protected] 16.2G - 298G -
[email protected] 15.2G - 297G -
[email protected] 13.8G - 297G -
[email protected] 14.1G - 298G -
[email protected] 19.1G - 298G -
[email protected] 19.3G - 299G -
[email protected] 16.6G - 299G -
[email protected] 16.7G - 300G -
[email protected] 15.7G - 299G -
[email protected] 16.3G - 300G -
[email protected] 16.6G - 300G -
[email protected] 19.5G - 300G -
[email protected] 19.8G - 299G -
[email protected] 17.4G - 299G -
[email protected] 17.6G - 300G -
[email protected] 16.4G - 299G -
[email protected] 16.9G - 300G -
[email protected] 17.5G - 297G -
[email protected] 20.0G - 297G -
[email protected] 20.2G - 297G -
[email protected] 5.43G - 297G -
[email protected] 5.46G - 302G -
[email protected] 16.7G - 307G -
[email protected] 16.8G - 308G -
[email protected] 17.2G - 309G -
[email protected] 20.5G - 309G -
[email protected] 17.4G - 309G -
[email protected] 17.7G - 310G -
[email protected] 17.8G - 311G -
[email protected] 575M - 310G -
[email protected] 575M - 310G -
[email protected] 20.9G - 309G -
[email protected] 21.0G - 309G -
[email protected] 20.6G - 306G -
[email protected] 17.8G - 306G -
[email protected] 18.1G - 308G -
[email protected] 561M - 307G -
[email protected] 561M - 307G -
[email protected] 20.7G - 308G -
[email protected] 21.3G - 308G -
[email protected] 21.6G - 308G -
[email protected] 18.9G - 309G -
[email protected] 19.1G - 310G -
[email protected] 18.0G - 309G -
[email protected] 18.2G - 309G -
[email protected] 18.6G - 310G -
[email protected] 19.1G - 310G -
[email protected] 22.1G - 238G -
[email protected] 19.4G - 238G -
[email protected] 12.2G - 239G -
[email protected] 314M - 245G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 584M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 584M - 261G -
raid-1/[email protected] 584M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 584M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 585M - 261G -
raid-1/[email protected] 584M - 261G -
答案1
答案2
以下是我目前使用过的内容：
zfs list- 识别体积/数据集zfs list -H -t snapshot -o name -S creation -r volume/dataset | tail -10- 用你自己的信息替换volume/dataset，tail XX menas list xx olderszfs list -H -t snapshot -o name -S creation -r volume/dataset | tail -10 | xargs -n 1 zfs destroy- 再次用你的替换卷/数据集。