What is the best (meaning fastest) way to move a large file system
from one pool to another pool on the same machine. I have a machine
with two pools. One pool currently has all my data (4 filesystems), but it's
misconfigured. Another pool is configured correctly, and I want to move the
file systems to the new pool. Should I use 'rsync' or 'zfs send'?
What happens is I forgot I couldn't incrementally add raid devices. I want
to end up with two raidz(x4) vdevs in the same pool. Here's what I have now:
B# zpool status
pool: dbxpool
state: ONLINE
scrub: none requested
config:
NAME STATE READ WRITE CKSUM
dbxpool ONLINE 0 0 0
raidz1 ONLINE 0 0 0
c1t4d0 ONLINE 0 0 0
c2t6d0 ONLINE 0 0 0
c2t1d0 ONLINE 0 0 0
c2t4d0 ONLINE 0 0 0
errors: No known data errors
pool: dbxpool2
state: ONLINE
scrub: resilver completed with 0 errors on Tue Jun 19 15:16:19 2007
config:
NAME STATE READ WRITE CKSUM
dbxpool2 ONLINE 0 0 0
raidz1 ONLINE 0 0 0
c1t2d0 ONLINE 0 0 0
c1t5d0 ONLINE 0 0 0
c2t5d0 ONLINE 0 0 0
c1t1d0 ONLINE 0 0 0
errors: No known data errors
-------------------
'dbxpool' has all my data today. Here are my steps:
1. move data to dbxpool2
2. remount using dbxpool2
3. destroy dbxpool1
4. create new proper raidz vdev inside dbxpool2 using devices from dbxpool1
Any advice?
I'm constrained by trying to minimize the downtime for the group
of people using this as their file server. So I ended up with
an ad-hoc assignment of devices. I'm not worried about
optimizing my controller traffic at the moment.
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