HI
*
I have some doubts on ZFS.*
[root@beastie /etc]# zpool create nas da0 da1
[root@beastie /etc]# zpool list
NAME SIZE USED AVAIL CAP HEALTH ALTROOT
nas 23.9G 73.5K 23.9G 0% ONLINE -
[root@beastie /etc]# zpool add nas da2
[root@beastie /etc]# zpool list
NAME SIZE USED AVAIL CAP HEALTH ALTROOT
nas 35.8G 134K 35.8G 0% ONLINE -
*Then I stored one big file on /nas . after that , I tried to remove newly
attached disk.*
[root@beastie /etc]# du -sh /nas/huge_file
464M /nas/huge_file
[root@beastie ~]# zpool remove nas da2
cannot remove da2: only inactive hot spares or cache devices can be removed
[root@beastie ~]# zpool offline nas da2
cannot offline da2: no valid replicas
[root@beastie ~]# zpool detach nas da2
cannot detach da2: only applicable to mirror and replacing vdevs
*
Though the data stored in the pool is much less that the size of individual
disks , I 'm unable to remove any of the members from the pool. How can I
do that without losing data ?
*
*I have one more doubt*
[root@beastie ~]# zpool create nas mirror ad4 ad6 mirror da0 da1
[root@beastie ~]# zpool status
pool: nas
state: ONLINE
scrub: none requested
config:
NAME STATE READ WRITE CKSUM
nas ONLINE 0 0 0
mirror ONLINE 0 0 0
ad4 ONLINE 0 0 0
ad6 ONLINE 0 0 0
mirror ONLINE 0 0 0
da0 ONLINE 0 0 0
da1 ONLINE 0 0 0
[root@beastie ~]# zpool detach nas da0
[root@beastie ~]# zpool status
pool: nas
state: ONLINE
scrub: none requested
config:
NAME STATE READ WRITE CKSUM
nas ONLINE 0 0 0
mirror ONLINE 0 0 0
ad4 ONLINE 0 0 0
ad6 ONLINE 0 0 0
da1 ONLINE 0 0 0
errors: No known data errors
[root@beastie ~]# zpool attach nas da0
missing <new_device> specification
[root@beastie ~]# zpool attach nas da0 da1
invalid vdev specification
use '-f' to override the following errors:
/dev/da1 is part of active pool 'nas'
*How can I reattach it to the pool ?*
*Finally one more doubt too*
[root@beastie ~]# zpool create nas mirror ad4 ad6 mirror da0 da1
*can we do this in two steps. something like*
[root@beastie ~]# zpool create nas1 mirror ad4 ad6
[root@beastie ~]# zpool create nas2 mirror da0 da1
[root@beastie ~]# zpool create nas nas1 nas 2
cannot open 'nas1': no such GEOM provider
must be a full path or shorthand device name
--
Regards
Basil Kurian
<http://basilkurian.tk>
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