root@adrenalin:~# xfs_growfs -t /etc/mtab /
meta-data=/dev/md/1              isize=256    agcount=45, agsize=3449690 blks
         =                       sectsz=4096  attr=0
data     =                       bsize=4096   blocks=155236032, imaxpct=25
         =                       sunit=0      swidth=0 blks, unwritten=1
naming   =version 2              bsize=4096
log      =internal               bsize=4096   blocks=16384, version=2
         =                       sectsz=4096  sunit=1 blks
realtime =none                   extsz=262144 blocks=0, rtextents=0
data blocks changed from 155236032 to 232854048