Need some information about mdadm 3.2.5

[Tarak Anumolu <tarak.anumolu@samsung.com>]

Hi

My name is TARAK.

We got some problem in using mdadm 3.2.5.

We are trying to do RAID operation on 8 harddisks each of size 1TB with 7 harddisks as raid devices and 1 hard disk as spare device.

Command : mdadm -C /dev/md0 -f --meta-version 0.9 -l5 -n7 -x1 /dev/sd[a-h]1

After the RAID operation is completed when we check the status,We are getting the following errors.

 # parted - s  /dev/md0 print
 Model: Linux Software RAID Array (md)
 Disk /dev/md0: 6001GB
 Sector size (logical/physical): 512B/512B
 Partition Table: gpt
 Number Start End Size File system Name Flags
 1 1049kB 60.0GB 60.0GB xfs primary
 2 60.0GB 6001GB 5941GB primary

# parted -s /dev/md0 print 
Error: /dev/md0: unrecognised disk label 

# parted -s /dev/md0 print 
Error: partition length of 23442158592 sectors exceeds the loop-partition-table-imposed maximum of 4294967295 

FYI Our kernel version is Linux mpc8536ds 2.6.32.

Can you please tell me whether there are any compatibility issues with the kernel and whether there is any limitation on raid devices.

When we try with 5 Harddisks, we didn't face any problem.

We are facing this problem when we try to do RAID operation with more than 5 harddisks.

Please help me on this..



Thanks & Regards

Tarak Ramgopal Anumolu 
Security Solution Division
SAMSUNG TECHWIN CO.,LTD
TEL :+82 -70-7147-8396
Mobile: +82-10-7249-8396
E-mail : tarak.anumolu@samsung.com