Summary: How to determine the Block Size

Thanks to all who replied.
I got mainly three answers:

1.  df -g      -> reports    block size 8192
2.  fstyp -v  -> reports    bsize  1024
3.  mkfs  -m  -> for vxfs reports bsize=1024

Example:
======
# df -k
...
/dev/vx/dsk/rootdg/volt 4194304  527396 3437759    14%    /datavol1

# mkfs -m /dev/vx/rdsk/rootdg/volt
mkfs -F vxfs -o 
ninode=unlimited,bsize=1024,version=5,inosize=256,logsize=16384,largefiles 
/dev/vx/rdsk/rootdg/volt 18874368


# fstyp -v /dev/vx/dsk/rootdg/volt | more
vxfs
magic a501fcf5  version 5  ctime Tue Feb 17 09:39:13 2004
logstart 0  logend 0
bsize  1024 size  9437184 dsize  9437184  ninode 0  nau 0
defiextsize 0  ilbsize 0  immedlen 96  ndaddr 10
aufirst 0  emap 0  imap 0  iextop 0  istart 0
bstart 0  femap 0  fimap 0  fiextop 0  fistart 0  fbstart 0
nindir 2048  aulen 32768  auimlen 0  auemlen 8
auilen 0  aupad 0  aublocks 32768  maxtier 15
inopb 4  inopau 0  ndiripau 0  iaddrlen 8   bshift 10
inoshift 2  bmask fffffc00  boffmask 3ff  checksum e663272f
oltext1 33  oltext2 18946  oltsize 1  checksum2 4b2b
free 7755647  ifree 0
efree  29 59 75 6 11 11 12 9 8 10 6 7 4 3 3 5 2 4 2 0 2 0 1 0 0 0 0 0 0 0 0 
0
#

# df -g /datavol1
/datavol1   (/dev/vx/dsk/rootdg/volt):     8192 block size          1024 
frag size
18874368 total blocks   15511294 free blocks 14541876 available        
1985940 total files
1938910 free files     69992454 filesys id
    vxfs fstype       0x00000004 flag             255 filename length

# df -g /dev/vx/dsk/rootdg/volt
/datavol1   (/dev/vx/dsk/rootdg/volt):     8192 block size          1024 
frag size
18874368 total blocks   15511294 free blocks 14541876 available        
1985940 total files
1938910 free files     69992454 filesys id
    vxfs fstype       0x00000004 flag             255 filename length



>From: "Marco Ilea" <marco_ilea@hotmail.com>
>To: sunmanagers@sunmanagers.org
>Subject: How to determine the Block Size
>Date: Wed, 17 Mar 2004 12:37:44 -0800
>
>Hello Admins,
>
>The UFS file system block size in Solaris 8 can be 4096  or  8192
># man newfs
>......
>          -b bsize
>                The logical block size of  the  file  system  in
>                bytes  (either  4096  or  8192).  The default is
>                8192.
>
>How can I determine what is the block size of an existing file system
>(one that has been created already)?
>Also the above is valid for UFS,
>what about vxfs (Veritas File System - same thing, how can I determine 
>it?).
>
>Any help will be appreciated.
>
>TIA,
>Marco

_________________________________________________________________
All the action. All the drama. Get NCAA hoops coverage at MSN Sports by 
ESPN. http://msn.espn.go.com/index.html?partnersite=espn
_______________________________________________
sunmanagers mailing list
sunmanagers@sunmanagers.org
http://www.sunmanagers.org/mailman/listinfo/sunmanagers