CDDAフォルダ(700Gくらい)をzfsにコピった

ネタ


dedup はあんまきかないね。gzipは効きすぎw

(gzip)
[root@chinachu] # zfs list
NAME USED AVAIL REFER MOUNTPOINT
tv 191G 3.38T 191G /tv

  • -

(gzip+dedup)

NAME USED AVAIL REFER MOUNTPOINT
tv 191G 3.39T 191G /tv

[root@chinachu] # zpool list [/tv]
NAME SIZE ALLOC FREE CAP DEDUP HEALTH ALTROOT
tv 3.62T 185G 3.44T 4% 1.03x ONLINE -

[root@chinachu] # zdb -S tv [/tv]
Simulated DDT histogram:

bucket allocated referenced
______ ______________________________ ______________________________
refcnt blocks LSIZE PSIZE DSIZE blocks LSIZE PSIZE DSIZE

            • ------ ----- ----- ----- ------ ----- ----- -----

1 1.43M 183G 178G 178G 1.43M 183G 178G 178G
2 49.9K 6.24G 6.11G 6.11G 102K 12.8G 12.5G 12.5G
4 3 384K 1.50K 1.50K 19 2.38M 9.50K 9.50K
8 1 128K 512 512 10 1.25M 5K 5K
16 1 128K 512 512 24 3M 12K 12K
Total 1.48M 189G 184G 184G 1.53M 196G 191G 191G

dedup = 1.03, compress = 1.03, copies = 1.00, dedup * compress / copies = 1.06