Re: ZFS on root with dedupe
- In reply to: Robert Fitzpatrick : "ZFS on root with dedupe"
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Date: Sat, 22 Apr 2023 15:43:23 UTC
Robert Fitzpatrick wrote: > Hi, > > I installed FreeBSD 13.1 server with ZFS raid 10 to serve a PostgreSQL > database, LDAP and DNS. I never noticed until today, I installed some > more memory and was checking status after the starting up. DEDUP appears > enabled, is that by default? I certainly did not enable. Does this mean > it is in fact enabled and what are the repercussions of disabling now? > >> root@db1:~ # zpool list >> NAME SIZE ALLOC FREE CKPOINT EXPANDSZ FRAG CAP DEDUP >> HEALTH ALTROOT >> zdb1 262G 26.1G 236G - - 7% 9% 1.00x >> ONLINE - This doesn't mean it's enabled; check `zfs get dedup`. >> root@db1:~ # zpool status >> pool: zdb1 >> state: ONLINE >> scan: scrub repaired 0B in 00:04:52 with 0 errors on Thu Apr 13 >> 10:46:22 2023 >> config: >> >> NAME STATE READ WRITE CKSUM >> zdb1 ONLINE 0 0 0 >> mirror-0 ONLINE 0 0 0 >> ada0p3 ONLINE 0 0 0 >> ada1p3 ONLINE 0 0 0 >> mirror-1 ONLINE 0 0 0 >> ada2p3 ONLINE 0 0 0 >> ada3p3 ONLINE 0 0 0 >> root@db1:~ # zfs list >> NAME USED AVAIL REFER MOUNTPOINT >> zdb1 26.0G 228G 96K /zdb1 >> zdb1/ROOT 24.8G 228G 96K none >> zdb1/ROOT/default 24.8G 228G 14.6G / >> zdb1/tmp 1.12M 228G 200K /tmp >> zdb1/usr 1.17G 228G 96K /usr >> zdb1/usr/home 1.31M 228G 1.30M /usr/home >> zdb1/usr/ports 1.17G 228G 1.17G /usr/ports >> zdb1/usr/src 96K 228G 96K /usr/src >> zdb1/var 5.35M 228G 96K /var >> zdb1/var/audit 96K 228G 96K /var/audit >> zdb1/var/crash 96K 228G 96K /var/crash >> zdb1/var/log 4.78M 228G 660K /var/log >> zdb1/var/mail 200K 228G 144K /var/mail >> zdb1/var/tmp >