Hello again :-)
I removed all partitions of my disks and do:
dd if=/dev/zero of=/dev/sdb bs=512 count=1 for all disks..
next, I created a new partition (non-fs data) starting of 64 like below (for
every devices)
fdisk -lu /dev/sdb
Disk /dev/sdb: 2000.4 GB, 2000398934016 bytes
255 heads, 63 sectors/track, 243201 cylinders, total 3907029168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xd2017c41
Device Boot Start End Blocks Id System
/dev/sdb1 64 3907029167 1953514552 da Non-FS data
created a new raid5 array:
mdadm --create --verbose /dev/md0 --level=raid5 --raid-devices=5 /dev/sdb
/dev/sdc /dev/sdd /dev/sde /dev/sdf
cat /proc/mdstat
md0 : active raid5 sdf[5] sde[3] sdd[2] sdc[1] sdb[0]
7814051840 blocks super 1.2 level 5, 512k chunk, algorithm 2 [5/4]
[UUUU_]
[>....................] recovery = 0.3% (6625324/1953512960)
finish=971.1min speed=33411K/sec
Now, I've 5 identical disks (2Tb WD)
I've to wait rebuilding time after do new tests performance.
The procedure that I've done is correct?
thanks! :-)
Pol
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