From: Marco Ilea (marco_ilea@hotmail.com)
Date: Wed Mar 17 2004 - 17:04:47 EST
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
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