mkfs.xfs - how to calculate su & sw on RAID10

I have RAID 10, that is my configuration:

    /opt/MegaRAID/storcli/storcli64 /c0/d0 show
Controller = 0
Status = Success
Description = Show Diskgroup Succeeded


TOPOLOGY :
========

--------------------------------------------------------------------------
DG Arr Row EID:Slot DID Type   State BT      Size PDC  PI SED DS3  FSpace
--------------------------------------------------------------------------
 0 -   -   -        -   RAID10 Optl  N  43.658 TB dflt N  N   dflt N
 0 0   -   -        -   RAID1  Optl  N   7.276 TB dflt N  N   dflt N
 0 0   0   12:0     14  DRIVE  Onln  N   3.638 TB dflt N  N   dflt -
 0 0   1   12:1     16  DRIVE  Onln  N   3.638 TB dflt N  N   dflt -
 0 0   2   12:2     15  DRIVE  Onln  N   3.638 TB dflt N  N   dflt -
 0 0   3   12:3     28  DRIVE  Onln  N   3.638 TB dflt N  N   dflt -
 0 1   -   -        -   RAID1  Optl  N   7.276 TB dflt N  N   dflt N
 0 1   0   12:4     19  DRIVE  Onln  N   3.638 TB dflt N  N   dflt -
 0 1   1   12:5     22  DRIVE  Onln  N   3.638 TB dflt N  N   dflt -
 0 1   2   12:6     20  DRIVE  Onln  N   3.638 TB dflt N  N   dflt -
 0 1   3   12:7     25  DRIVE  Onln  N   3.638 TB dflt N  N   dflt -
 0 2   -   -        -   RAID1  Optl  N   7.276 TB dflt N  N   dflt N
 0 2   0   12:8     26  DRIVE  Onln  N   3.638 TB dflt N  N   dflt -
 0 2   1   12:9     29  DRIVE  Onln  N   3.638 TB dflt N  N   dflt -
 0 2   2   12:10    21  DRIVE  Onln  N   3.638 TB dflt N  N   dflt -
 0 2   3   12:11    33  DRIVE  Onln  N   3.638 TB dflt N  N   dflt -
 0 3   -   -        -   RAID1  Optl  N   7.276 TB dflt N  N   dflt N
 0 3   0   12:12    17  DRIVE  Onln  N   3.638 TB dflt N  N   dflt -
 0 3   1   12:13    23  DRIVE  Onln  N   3.638 TB dflt N  N   dflt -
 0 3   2   12:14    24  DRIVE  Onln  N   3.638 TB dflt N  N   dflt -
 0 3   3   12:15    37  DRIVE  Onln  N   3.638 TB dflt N  N   dflt -
 0 4   -   -        -   RAID1  Optl  N   7.276 TB dflt N  N   dflt N
 0 4   0   12:16    31  DRIVE  Onln  N   3.638 TB dflt N  N   dflt -
 0 4   1   12:17    34  DRIVE  Onln  N   3.638 TB dflt N  N   dflt -
 0 4   2   12:18    35  DRIVE  Onln  N   3.638 TB dflt N  N   dflt -
 0 4   3   12:19    27  DRIVE  Onln  N   3.638 TB dflt N  N   dflt -
 0 5   -   -        -   RAID1  Optl  N   7.276 TB dflt N  N   dflt N
 0 5   0   12:20    32  DRIVE  Onln  N   3.638 TB dflt N  N   dflt -
 0 5   1   12:21    30  DRIVE  Onln  N   3.638 TB dflt N  N   dflt -
 0 5   2   12:22    36  DRIVE  Onln  N   3.638 TB dflt N  N   dflt -
 0 5   3   12:23    18  DRIVE  Onln  N   3.638 TB dflt N  N   dflt -
--------------------------------------------------------------------------

There are 6 virtual drivers (created from 4 physical disks in RAID1) striped in RAID0.

My "su"Strip unit is 256kB

My question is:

1. my "sw" is 6, 2 or something else...
2. How can I calculate xfs_info output so I can find out how my XFS was created (what parameters used).....?

My corrent XFS configuration:

    meta-data=/dev/sdb1              isize=256    agcount=44, agsize=268435392 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=0        finobt=0
data     =                       bsize=4096   blocks=11713117696, imaxpct=5
         =                       sunit=64     swidth=128 blks
naming   =version 2              bsize=4096   ascii-ci=0 ftype=0
log      =inteal               bsize=4096   blocks=521728, version=2
         =                       sectsz=512   sunit=64 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0

TIA, Gili

Recent Questions...