Re: Array of disks attached to multiple controllers

[Lukas Kubin <kubin@opf.slu.cz>]

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Ok, the output follows:

=====

/dev/md0:
         Version : 00.90.00
   Creation Time : Tue Sep 14 16:02:42 2004
      Raid Level : raid5
      Array Size : 782929792 (746.66 GiB 801.72 GB)
     Device Size : 195360896 (186.31 GiB 200.05 GB)
    Raid Devices : 16
   Total Devices : 17
Preferred Minor : 0
     Persistence : Superblock is persistent

     Update Time : Tue Sep 14 16:02:42 2004
           State : dirty, recovering
  Active Devices : 16
Working Devices : 17
  Failed Devices : 0
   Spare Devices : 1

          Layout : left-symmetric
      Chunk Size : 128K

  Rebuild Status : 0% complete

     Number   Major   Minor   RaidDevice State
        0       8       16        0      active sync   /dev/sdb
        1       8       32        1      active sync   /dev/sdc
        2       8       48        2      active sync   /dev/sdd
        3       8       64        3      active sync   /dev/sde
        4       8       80        4      active sync   /dev/sdf
        5       8       96        5      active sync   /dev/sdg
        6       8      112        6      active sync   /dev/sdh
        7       8      128        7      active sync   /dev/sdi
        8       8      144        8      active sync   /dev/sdj
        9       8      160        9      active sync   /dev/sdk
       10       8      176       10      active sync   /dev/sdl
       11       8      192       11      active sync   /dev/sdm
       12       8      208       12      active sync   /dev/sdn
       13       8      224       13      active sync   /dev/sdo
       14       8      240       14      active sync   /dev/sdp
       15      65        0       15      active sync   /dev/sdq
       16      65       16       16      spare   /dev/sdr
            UUID : c18d1ba9:d7d4f338:6d83a4e1:023cbbdb
          Events : 0.1

=====

All the disks are SATA 200GB, the first controller (for drives sd{a..f}) 
is 3ware 8xxx, the second is 3ware 9000 ATA Raid controller. The first 
controller uses 3w-xxxx kernel module, the second one 3x-9xxx on linux 
2.4.27.

Thank you for any help.

lukas

Guy wrote:
> Give us more info.
> Output from mdadm -D /dev/md?
> 
> Guy
> 
> 
> -----Original Message-----
> From: linux-raid-owner@vger.kernel.org
> [mailto:linux-raid-owner@vger.kernel.org] On Behalf Of Lukas Kubin
> Sent: Tuesday, September 14, 2004 9:22 AM
> To: linux-raid@vger.kernel.org
> Subject: Array of disks attached to multiple controllers
> 
> I'm having troubles creating Raid-5 array consisted of 16 (+1 spare) 
> disks attached to two 3ware (not same version) SATA controllers.
> 
> Mkraid creates the array without problems, however the array's total 
> size only equals the sum of space on drives attached to the first of 2 
> controllers. Ie, sd{b..f} are on scsi0 and sd{g..r} on scsi1. The space 
> of created array is close to the sum of drives attechted to scsi0 only.
> 
> Is it possible to combine drives on 2 controllers into one array? If 
> not, what solution should I use to have one filesystem containing whole 
> the drivespace on Raid-5?
> 
> Thank you.
> 
> lukas
> 

-- 
Lukas Kubin

phone: +420596398275
email: kubin@opf.slu.cz

Information centre
The School of Business Administration in Karvina
Silesian University in Opava
Czech Republic
http://www.opf.slu.cz

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