[OpenIndiana-discuss] Puzzling behaviour in zpools
Len Zaifman
leonardz at sickkids.ca
Mon Mar 4 18:52:35 UTC 2013
I have a system which I am configuring for maximum space to use as a low cost backup service. It has an Areca raid card , 24 2 TB drives (Format reports 1.82 TB) and 12 4 TB drives (format reports 3.64 TB).
using 2 2 TB drives for a mirrored rpool, I create a 2 TB pool as 2 x 11 disk raidz2 vdevs and a 4 TB pool as 1 x 12 disk raidz2 vdev
I formatted the 2 TB disks using SMI labels and 4 TB disks using EFI labels.
To my surprise, the 4 TB pool is smaller than the 2 TB pool, although I expected it to be 10% larger. Does anyone know why this happened? I think I am ~ 7 TB short on the 4 TB pool.
Any advice is welcome. Thank you.
Details:
OS: OpenIndiana Development oi_151a X86
df shows
rpool/ROOT/openindiana
1.8T 1.6G 1.8T 1% /
rpool/smallbkup 1.6T 31K 1.6T 1% /rpool/smallbkup
ccmbkup12TB 32T 68K 32T 1% /ccmbkup12TB
fourTBpool 29T 56K 29T 1% /fourTBpool <<< I think I am 7 TB short here
zpool status shows
pool: ccmbkup12TB
config:
NAME STATE READ WRITE CKSUM
ccmbkup12TB ONLINE 0 0 0
raidz2-0 ONLINE 0 0 0
c2t0d2 ONLINE 0 0 0
c2t0d3 ONLINE 0 0 0
c2t0d4 ONLINE 0 0 0
c2t0d5 ONLINE 0 0 0
c2t0d6 ONLINE 0 0 0
c2t0d7 ONLINE 0 0 0
c2t1d0 ONLINE 0 0 0
c2t1d1 ONLINE 0 0 0
c2t1d2 ONLINE 0 0 0
c2t1d3 ONLINE 0 0 0
c2t1d4 ONLINE 0 0 0
raidz2-1 ONLINE 0 0 0
c2t1d5 ONLINE 0 0 0
c2t1d6 ONLINE 0 0 0
c2t1d7 ONLINE 0 0 0
c2t2d0 ONLINE 0 0 0
c2t2d1 ONLINE 0 0 0
c2t2d2 ONLINE 0 0 0
c2t2d3 ONLINE 0 0 0
c2t2d4 ONLINE 0 0 0
c2t2d5 ONLINE 0 0 0
c2t2d6 ONLINE 0 0 0
c2t2d7 ONLINE 0 0 0
pool: fourTBpool
config:
NAME STATE READ WRITE CKSUM
fourTBpool ONLINE 0 0 0
raidz2-0 ONLINE 0 0 0
c2t3d0 ONLINE 0 0 0
c2t3d1 ONLINE 0 0 0
c2t3d2 ONLINE 0 0 0
c2t3d3 ONLINE 0 0 0
c2t3d4 ONLINE 0 0 0
c2t3d5 ONLINE 0 0 0
raidz2-1 ONLINE 0 0 0
c2t3d6 ONLINE 0 0 0
c2t3d7 ONLINE 0 0 0
c2t4d0 ONLINE 0 0 0
c2t4d1 ONLINE 0 0 0
c2t4d2 ONLINE 0 0 0
c2t4d3 ONLINE 0 0 0
pool: rpool
state: ONLINE
scan: resilvered 17.7G in 0h2m with 0 errors on Mon Mar 4 09:34:18 2013
config:
NAME STATE READ WRITE CKSUM
rpool ONLINE 0 0 0
mirror-0 ONLINE 0 0 0
c2t0d0s0 ONLINE 0 0 0
c2t0d1s0 ONLINE 0 0 0
and format output shows:
0. c2t0d0 <Areca-rpool080-VOL#000-R001 cyl 60785 alt 2 hd 255 sec 252>
1. c2t0d1 <Areca-rpool180-VOL#001-R001 cyl 60785 alt 2 hd 255 sec 252> rpoolbk
2. c2t0d2 <Areca-ARC-1880-VOL#002-R001-1.82TB>
3. c2t0d3 <Areca-ARC-1880-VOL#003-R001-1.82TB>
4. c2t0d4 <Areca-ARC-1880-VOL#004-R001-1.82TB>
5. c2t0d5 <Areca-ARC-1880-VOL#005-R001-1.82TB>
6. c2t0d6 <Areca-ARC-1880-VOL#006-R001-1.82TB>
7. c2t0d7 <Areca-ARC-1880-VOL#007-R001-1.82TB>
8. c2t1d0 <Areca-ARC-1880-VOL#008-R001-1.82TB>
9. c2t1d1 <Areca-ARC-1880-VOL#009-R001-1.82TB>
10. c2t1d2 <Areca-ARC-1880-VOL#010-R001-1.82TB>
11. c2t1d3 <Areca-ARC-1880-VOL#011-R001-1.82TB>
12. c2t1d4 <Areca-ARC-1880-VOL#012-R001-1.82TB>
13. c2t1d5 <Areca-ARC-1880-VOL#013-R001-1.82TB>
14. c2t1d6 <Areca-ARC-1880-VOL#014-R001-1.82TB>
15. c2t1d7 <Areca-ARC-1880-VOL#015-R001-1.82TB>
16. c2t2d0 <Areca-ARC-1880-VOL#016-R001-1.82TB>
17. c2t2d1 <Areca-ARC-1880-VOL#017-R001-1.82TB>
18. c2t2d2 <Areca-ARC-1880-VOL#018-R001-1.82TB>
19. c2t2d3 <Areca-ARC-1880-VOL#019-R001-1.82TB>
20. c2t2d4 <Areca-ARC-1880-VOL#020-R001-1.82TB>
21. c2t2d5 <Areca-ARC-1880-VOL#021-R001-1.82TB>
22. c2t2d6 <Areca-ARC-1880-VOL#022-R001-1.82TB>
23. c2t2d7 <Areca-ARC-1880-VOL#023-R001-1.82TB>
24. c2t3d0 <Areca-ARC-1880-VOL#024-R001-3.64TB>
25. c2t3d1 <Areca-ARC-1880-VOL#025-R001-3.64TB>
26. c2t3d2 <Areca-ARC-1880-VOL#026-R001-3.64TB>
27. c2t3d3 <Areca-ARC-1880-VOL#027-R001-3.64TB>
28. c2t3d4 <Areca-ARC-1880-VOL#028-R001-3.64TB>
29. c2t3d5 <Areca-ARC-1880-VOL#029-R001-3.64TB>
30. c2t3d6 <Areca-ARC-1880-VOL#030-R001-3.64TB>
31. c2t3d7 <Areca-ARC-1880-VOL#031-R001-3.64TB>
32. c2t4d0 <Areca-ARC-1880-VOL#032-R001-3.64TB>
33. c2t4d1 <Areca-ARC-1880-VOL#033-R001-3.64TB>
34. c2t4d2 <Areca-ARC-1880-VOL#034-R001-3.64TB>
35. c2t4d3 <Areca-ARC-1880-VOL#035-R001-3.64TB>
Len Zaifman
Systems Manager, High Performance Systems
The Centre for Computational Medicine
The Hospital for Sick Children
555 University Ave.
Toronto, Ont M5G 1X8
tel: 416-813-5513
email: leonardz at sickkids.ca
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