On Tue, Nov 16, 2010 at 08:08:44PM +0200, Zoltan Szecsei wrote:
*** Setup:
8 * 5900RPM Seagte 2TB drives on SiI3132 PCIx x1 card.
Linux gs0 2.6.32-25-generic #45-Ubuntu SMP Sat Oct 16 19:52:42 UTC 2010
x86_64 GNU/Linux
mdadm - v3.1.4 - 31st August 2010
LVM version: 2.02.54(1) (2009-10-26)
Library version: 1.02.39 (2009-10-26)
Driver version: 4.15.0
mke2fs 1.41.11 (14-Mar-2010)
*** Commands used:
mdadm --create /dev/md0 --metadata=1.2 --auto=md --assume-clean
--bitmap=internal --bitmap-chunk=131072 --chunk=512 --level=6
--raid-devices=8 /dev/sd[abcdefgh]
mdadm --detail --scan >> /etc/mdadm.conf
mdadm --assemble /dev/md0
as i said this is not useful
pvcreate --metadatasize 512 /dev/md0
you should use --dataalignment, not --metadatasize, also you should
align to a full stripe
vgcreate geo_vg0 /dev/md0
lvcreate -n geo_lvm0 -l 100%FREE geo_vg0
mkfs -t ext4 -m 1-b 4096 -E stride=128,stripe-width=768
/dev/geo_vg0/geo_lvm0
--
Luca Berra -- bluca@xxxxxxxxxx
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