Freenas
我應該如何從 FreeNAS 中刪除古老的檔案？
我從一位離開公司的同事那裡繼承了 FreeNAS 安裝。該安裝用於保存我們分佈在世界各地的許多 Web 伺服器的內部 rsync 備份。
FreeNAS 盒子中的儲存空間不足，我發現我們仍然有來自早在 2013 年就退役的伺服器的備份。我們不再需要這些舊檔案，所以我想刪除它們以釋放一些空間。
的初步結果
df -h是：... 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 ...所以，在我的天真中，我只是刪除了舊的 rsync 快照，即
rm -rf /mnt/raid-1/backups/old.server.1 /mnt/raid-1/backups/old.server.2. 之後，df -h現在看起來像：... 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 ...o_o
我已將問題縮小到我對 ZFS 缺乏了解。顯然，
df不是我預期的傳統意義上的報告磁碟使用情況，也不是天真的刪除可以解決我的問題。如果有人可以，我將不勝感激：
- 為我指明正確的方向，了解 FreeNAS 如何利用 ZFS，以便我理解它，並且
- 提供一些關於如何通過刪除那些古老備份的副本來釋放一些空間的指導。
編輯 1
我一直在閱讀，現在我明白由於 ZFS 的 CoW，空間沒有被釋放。
輸出
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編輯 2
`zfs list -t 快照的輸出
NAME USED AVAIL REFER MOUNTPOINT raid-1@auto-20140925.0800-2m 91.0G - 261G - raid-1@auto-20150102.0800-2m 9.13G - 301G - raid-1@auto-20150103.0800-2m 4.68G - 301G - raid-1@auto-20150104.0800-2m 4.70G - 302G - raid-1@auto-20150105.0800-2m 4.63G - 302G - raid-1@auto-20150106.0800-2m 15.5G - 297G - raid-1@auto-20150107.0800-2m 15.6G - 297G - raid-1@auto-20150108.0800-2m 15.7G - 297G - raid-1@auto-20150109.0800-2m 16.0G - 297G - raid-1@auto-20150110.0800-2m 15.9G - 297G - raid-1@auto-20150111.0800-2m 16.2G - 298G - raid-1@auto-20150112.0800-2m 15.2G - 297G - raid-1@auto-20150113.0800-2m 13.8G - 297G - raid-1@auto-20150114.0800-2m 14.1G - 298G - raid-1@auto-20150115.0800-2m 19.1G - 298G - raid-1@auto-20150116.0800-2m 19.3G - 299G - raid-1@auto-20150117.0800-2m 16.6G - 299G - raid-1@auto-20150118.0800-2m 16.7G - 300G - raid-1@auto-20150119.0800-2m 15.7G - 299G - raid-1@auto-20150120.0800-2m 16.3G - 300G - raid-1@auto-20150121.0800-2m 16.6G - 300G - raid-1@auto-20150122.0800-2m 19.5G - 300G - raid-1@auto-20150123.0800-2m 19.8G - 299G - raid-1@auto-20150124.0800-2m 17.4G - 299G - raid-1@auto-20150125.0800-2m 17.6G - 300G - raid-1@auto-20150126.0800-2m 16.4G - 299G - raid-1@auto-20150127.0800-2m 16.9G - 300G - raid-1@auto-20150128.0800-2m 17.5G - 297G - raid-1@auto-20150129.0800-2m 20.0G - 297G - raid-1@auto-20150130.0800-2m 20.2G - 297G - raid-1@auto-20150131.0800-2m 5.43G - 297G - raid-1@auto-20150201.0800-2m 5.46G - 302G - raid-1@auto-20150202.0800-2m 16.7G - 307G - raid-1@auto-20150203.0800-2m 16.8G - 308G - raid-1@auto-20150204.0800-2m 17.2G - 309G - raid-1@auto-20150205.0800-2m 20.5G - 309G - raid-1@auto-20150206.0800-2m 17.4G - 309G - raid-1@auto-20150207.0800-2m 17.7G - 310G - raid-1@auto-20150208.0800-2m 17.8G - 311G - raid-1@auto-20150209.0800-2m 575M - 310G - raid-1@auto-20150210.0800-2m 575M - 310G - raid-1@auto-20150211.0800-2m 20.9G - 309G - raid-1@auto-20150212.0800-2m 21.0G - 309G - raid-1@auto-20150213.0800-2m 20.6G - 306G - raid-1@auto-20150214.0800-2m 17.8G - 306G - raid-1@auto-20150215.0800-2m 18.1G - 308G - raid-1@auto-20150216.0800-2m 561M - 307G - raid-1@auto-20150217.0800-2m 561M - 307G - raid-1@auto-20150218.0800-2m 20.7G - 308G - raid-1@auto-20150219.0800-2m 21.3G - 308G - raid-1@auto-20150220.0800-2m 21.6G - 308G - raid-1@auto-20150221.0800-2m 18.9G - 309G - raid-1@auto-20150222.0800-2m 19.1G - 310G - raid-1@auto-20150223.0800-2m 18.0G - 309G - raid-1@auto-20150224.0800-2m 18.2G - 309G - raid-1@auto-20150225.0800-2m 18.6G - 310G - raid-1@auto-20150226.0800-2m 19.1G - 310G - raid-1@auto-20150227.0800-2m 22.1G - 238G - raid-1@auto-20150228.0800-2m 19.4G - 238G - raid-1@auto-20150301.0800-2m 12.2G - 239G - raid-1@auto-20150302.0800-2m 314M - 245G - raid-1/clone-auto-20140925.0800-2m@auto-20150102.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150103.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150104.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150105.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150106.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150107.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150108.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150109.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150110.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150111.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150112.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150113.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150114.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150115.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150116.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150117.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150118.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150119.0800-2m 584M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150120.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150121.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150122.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150123.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150124.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150125.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150126.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150127.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150128.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150129.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150130.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150131.0800-2m 584M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150201.0800-2m 584M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150202.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150203.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150204.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150205.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150206.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150207.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150208.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150209.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150210.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150211.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150212.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150213.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150214.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150215.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150216.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150217.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150218.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150219.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150220.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150221.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150222.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150223.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150224.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150225.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150226.0800-2m 584M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150227.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150228.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150301.0800-2m 585M - 261G - raid-1/clone-auto-20140925.0800-2m@auto-20150302.0800-2m 584M - 261G -
看起來您正在定期拍攝 ZFS 數據集的快照。任何刪除的數據都將保留在快照中。要刪除快照，請執行
zfs destroy raid-1@[snapshotname]有關快照的完整說明，請查看文件如果你想一次刪除一堆快照，看看這個答案。
這是我到目前為止使用的：
zfs list- 辨識卷/數據集zfs list -H -t snapshot -o name -S creation -r volume/dataset | tail -10- 用你的資訊替換卷/數據集，尾部 XX 菜單列表 xx 老年人zfs list -H -t snapshot -o name -S creation -r volume/dataset | tail -10 | xargs -n 1 zfs destroy- 再次，用你的替換卷/數據集。