Michael Fuckner wrote:
Lan Tran wrote:
I have a Dell PERC 6/E controller connected to an external Dell MD1000
storage, which I set up RAID 6 for. The RAID BIOS reports 8.5 TB. I
installed 7BETA4 amd64 and Sysinstall/dmesg.boot detects this correctly:
mfid1: <MFI Logical Disk> on mfi1
mfid1: 8578560MB (17568890880 sectors) RAID volume 'raid6' is optimal"
However, after I created a zfs zpool on this device it only shows 185
GB. # zpool create tank /dev/mfid1s1d
# zpool list
NAME SIZE USED AVAIL CAP HEALTH ALTROOT
tank 185G 111K 185G 0% ONLINE -
also with 'dh':
# df -h tank
Filesystem Size Used Avail Capacity Mounted on
tank 182G 0B 182G 0% /tank
The main purpose of ZFS is doing Software raid (which is even faster
than HW Raid nowadays).
You should export all disks seperately to the OS- and then you don't
have the 4GB limit wrapping the size to 185GB.
Regards,
Michael
Hi Michael,
I took your advice and went with ZFS software raid. There are 15-750 GB
SATA2 disks and I want the most space, easy management and reliability.
Performance (read/write) is not a big concern since it's a mail
archiving system. I chose raidz2 + 2 hot spares. Getting about 65
MB/s write performance from 'dd'.
# 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
mfid1 ONLINE 0 0 0
mfid2 ONLINE 0 0 0
mfid3 ONLINE 0 0 0
mfid4 ONLINE 0 0 0
mfid5 ONLINE 0 0 0
mfid6 ONLINE 0 0 0
mfid7 ONLINE 0 0 0
mfid8 ONLINE 0 0 0
mfid9 ONLINE 0 0 0
mfid10 ONLINE 0 0 0
mfid11 ONLINE 0 0 0
mfid12 ONLINE 0 0 0
mfid13 ONLINE 0 0 0
spares
mfid14 AVAIL
mfid15 AVAIL
errors: No known data errors
Thanks!
Lan
_______________________________________________
[email protected] mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-hardware
To unsubscribe, send any mail to "[EMAIL PROTECTED]"
