df and LVM

[L. Borg]

Anyone know of any bug in df that shows an incorrect output when a partion is
expanded using LVM?
I expanded my /opt to 10 gigs but df shows it at

99% allocation.
/opt (/dev/vg00/lvol6) : 532436 total allocated Kb
855 free allocated Kb
531581 used allocated Kb
99 % allocation used.

[Randy Mather]

Did you do a fsextend after the lvextend ?

Did you use SAM ... I would not use it for any disk management.

randy_mather@ham.honda.com

[Evan Day_1]

Did you unmount the filesystem and do an extendfs (assuming you're using HFS)
on the raw logical volume device (/dev/vgXX/rXXXXX)? I.E.:

# umount /opt
# extendfs /dev/vg00/rlvol6
# mount /opt

If you have VxFS (also called JFS) and the Online JFS product, you should be
able to do this without unmounting the filesystem. Check documentation.

[Anthony Goonetilleke_1]

I think this comes with the understanding of the LVM concepts. You can extend
a logical volume but still not extend the filesystem.

For example these are the four layers:
Physical Disk
Volume Group
Logical volume
Filesystem

You can either use extendfs or fsadm if you have online JFS depending on if its
an HFS or JFS filesystem.

regards,
Anthony