On 23/09/2009 14:56, Sunpyo Hong wrote:
I actually know the physical order of each HD. I was able to pull them out
of the NAS in the order specified in the NAS. (Each HD enclosure was
labeled) In the actual sata ports, this is what the hds are in.
SATA 0: HD1
SATA 1: HD2
SATA 2: HD3
SATA 3: HD4
SATA 4: CD-ROM
I think that linux reads the sata ports like.. 0 = sda, 1=sdb.. etc. So I
assume that HD1 = /dev/sda (missing), HD2 = /dev/sdb, HD3 = /dev/sdc, HD4 =
/dev/sdd so a create command should look like this:
#mdadm -Cv -level=5 --raid-disks=4 missing /dev/sdb4 /dev/sdc4 /dev/sdd4
This is exactly how I wrote the create command. Again I knew the physical
order of the Raid and put them together in that order. Tell me if I'm doing
something wrong.
If HD1 is really missing, and you've rebooted, then HD2 will now be sda,
HD3 sdb, HD4 sdc, and your command is
#mdadm -Cv -level=5 --raid-disks=4 missing /dev/sda4 /dev/sdb4 /dev/sdc4
Cheers,
John.
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