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aloxaf 跑过了,现在的数据量没办法手动去重,如果 2 个 512GB 的 SATA 固态或者 280GB 的傲腾就能搞定我觉得是值得的
root@truenas[~]# zdb -S -U /data/zfs/zpool.cache tank
Simulated DDT histogram:
bucket allocated referenced
______ ______________________________ ______________________________
refcnt blocks LSIZE PSIZE DSIZE blocks LSIZE PSIZE DSIZE
------ ------ ----- ----- ----- ------ ----- ----- -----
1 104M 13.0T 13.0T 13.0T 104M 13.0T 13.0T 13.0T
2 7.19M 920G 919G 919G 15.4M 1.93T 1.92T 1.92T
4 417K 52.1G 52.0G 52.0G 1.84M 236G 235G 235G
8 16.3K 2.03G 2.02G 2.02G 166K 20.7G 20.6G 20.6G
16 7.30K 927M 916M 916M 129K 16.0G 15.8G 15.8G
32 620 49.4M 34.1M 36.2M 22.6K 1.89G 1.40G 1.46G
64 50 5.01M 4.80M 4.87M 4.51K 461M 441M 447M
128 11 1.00M 482K 537K 1.82K 158M 73.1M 82.8M
256 4 130K 130K 154K 1.70K 60.4M 60.4M 70.2M
512 1 512B 512B 8.53K 848 424K 424K 7.06M
1K 3 1.50K 1.50K 25.6K 4.67K 2.33M 2.33M 39.8M
2K 1 512B 512B 8.53K 2.41K 1.20M 1.20M 20.5M
4K 1 128K 128K 128K 7.65K 979M 979M 978M
64K 1 512B 512B 8.53K 100K 50.1M 50.1M 855M
Total 112M 14.0T 13.9T 13.9T 122M 15.2T 15.2T 15.2T
dedup = 1.09, compress = 1.00, copies = 1.00, dedup * compress / copies = 1.09