Date: Fri, 22 May 2009 14:05:39 -0700 From: Randy Bush <randy@psg.com> To: freebsd-fs <freebsd-fs@freebsd.org> Subject: raidz2 a bit big Message-ID: <m28wkon90c.wl%randy@psg.com>
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a dozen 2tb drives in a raidz2
dfw1.psg.com:/root# zpool status
pool: tank
state: ONLINE
scrub: none requested
config:
NAME STATE READ WRITE CKSUM
tank ONLINE 0 0 0
raidz2 ONLINE 0 0 0
da0s3 ONLINE 0 0 0
da1s3 ONLINE 0 0 0
da2s1 ONLINE 0 0 0
da3s1 ONLINE 0 0 0
da4s1 ONLINE 0 0 0
da5s1 ONLINE 0 0 0
da6s1 ONLINE 0 0 0
da7s1 ONLINE 0 0 0
da8s1 ONLINE 0 0 0
da9s1 ONLINE 0 0 0
da10s1 ONLINE 0 0 0
da11s1 ONLINE 0 0 0
errors: No known data errors
i expected to get 10T effective because of the raidz2, but got 20T
^
dfw1.psg.com:/root# df -H
Filesystem Size Used Avail Capacity Mounted on
/dev/da0s1a 17G 3.8G 12G 25% /
devfs 1.0k 1.0k 0B 100% /dev
/dev/md0 130M 90k 119M 0% /tmp
tank 19T 0B 19T 0% /tank
tank/usr 19T 0B 19T 0% /tank/usr
tank/usr/home 19T 0B 19T 0% /tank/usr/home
tank/var 19T 0B 19T 0% /tank/var
tank/var/spool 19T 0B 19T 0% /tank/var/spool
tank/data 19T 0B 19T 0% /tank/data
clue bat?
randy
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