Editing Solaris 10 System Administration Part I (section)

==== fstyp command ====

show minimum free size with fstyp & -v option

<pre># fstyp -v /dev/dsk/c1t3d0s0 | grep minfree
minfree 2%      maxbpg  2048    optim   time
# fstyp -v /dev/rdsk/c1t3d0s0 | head
ufs
magic   11954   format  dynamic time    Wed Oct  5 15:57:18 2011
sblkno  16      cblkno  24      iblkno  32      dblkno  760
sbsize  2048    cgsize  8192    cgoffset 64     cgmask  0xffffffc0
ncg     214     size    10486368        blocks  10327132
bsize   8192    shift   13      mask    0xffffe000
fsize   1024    shift   10      mask    0xfffffc00
frag    8       shift   3       fsbtodb 1
minfree 2%      maxbpg  2048    optim   time
maxcontig 128   rotdelay 0ms    rps     167
#</pre>

show minimum free size with fstyp & -v option

<pre># fstyp -v /dev/rdsk/c1t3d0s0 | head
ufs
magic   11954   format  dynamic time    Wed Oct  5 15:57:18 2011
sblkno  16      cblkno  24      iblkno  32      dblkno  760
sbsize  2048    cgsize  8192    cgoffset 64     cgmask  0xffffffc0
ncg     214     size    10486368        blocks  10327132
bsize   8192    shift   13      mask    0xffffe000
fsize   1024    shift   10      mask    0xfffffc00
frag    8       shift   3       fsbtodb 1
minfree 2%      maxbpg  2048    optim   time
maxcontig 128   rotdelay 0ms    rps     167
#</pre>

changing minimum free size

<pre># tunefs -m 1 /dev/rdsk/c1t3d0s0 
minimum percentage of free space changes from 2% to 1%
# fstyp -v /dev/dsk/c1t3d0s0 | grep minfree
minfree 1%      maxbpg  2048    optim   time
#</pre>