Preparing a QFS Volume
After successfull installation of QFS (Software Installation) you have to prepare your disk. Build at least two partitions. One for the metadata (I-Nodes) and one for data. 16Gb for the metadata partition is a good choise in most cases (~ 30000000 indoes).
Now you need to create a mcf file (nobody know what mcf stands for). The file is located in /etc/opt/SUNWsamf and should look like this:
# Disk cache configuration for 2 file systems: qfs1, qfs2 # # Equipment Eq Eq Family Device Additional # Identifier Ord Type Set State Parameters # qfs0 10 ma qfs0 on /dev/dsk/c3t4d0s1 11 mm qfs0 on /dev/dsk/c3t4d0s6 12 mr qfs0 on
mm is the metadata device and mr the data device.
now perform the following commnds:
# samd config # sammkfs qfs0
and add a line for each volume to /etc/vfstab
:
qfs0 - /export/home samfs - yes stripe=0
after mount qfs0
or reboot the filesystem should be available
Expand a QFS Volume
first umount the filesystem than add metadata or data partion(s) to /etc/opt/SUNWsamfs/mcf
and run this commands:
samd config samgrowfs <volume> mount <volume>
Troubleshooting
if samfsck returns errors umount the filesystem (reboot may be required; disable mounting at bot in /etc/vfstab in this case) and run
samfsck -F -V <volume> mount <volume>
if mount returns errors (device is busy) perform this:
rmdir <mountpoint> mkdir <mountpoint> mount <volume>