Re: Problem with mdadm 3.2.5

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On Donnerstag, 28. März 2013 06:36:03 Tarak Anumolu wrote:
> Hi
> 
> FYI, We followed the below steps and At the end you can see the problem with
> the file system.

Tarak, could you do me a flavor, and reread, what I've already written last 
time? Then, attempt to answer the single question below, please.
 
> RAID operation on 8 harddisks each of size 1TB with 7 harddisks as raid
> devices and 1 hard disk as spare device got succeed.
 
> #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  xfs          primary
> 
> 
> Then We create 2 partitions md0p1 and md0p2.
> 
> #cat /proc/partitions
> major minor  #blocks  name
>   31        0       8192 mtdblock0
>   31        1     131072 mtdblock1
>    8        0  976762584 sda
>    8        1  976760832 sda1
>    8       16  976762584 sdb
>    8       17  976760832 sdb1
>    8       32  976762584 sdc
>    8       33  976760832 sdc1
>    8       48  976762584 sdd
>    8       49  976760832 sdd1
>    8       64  976762584 sde
>    8       65  976760832 sde1
>    8       80  976762584 sdf
>    8       81  976760832 sdf1
>    8       96  976762584 sdg
>    8       97  976760832 sdg1
>    8      112  976762584 sdh
>    8      113  976760832 sdh1
>    9        0 5860563456 md0
>  259        0   58604544 md0p1
>  259        1 5801957376 md0p2


Why do you insist in creating partitions in an already partitioned device?

Just do:

mkfs.xfs /dev/md0
mount /dev/md0 /mnt

and be done. It *is* that easy.

md0p1 and md0p2 are obsolete in this scenario. If you need a more complicated 
setup, check out lvm. 

Pete
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