This assignment is due by 5:00 PM Tuesday, 28 March.
A file system exercise
Make sure your Pi doesn’t have any logical volumes. Run pvscan, vgscan and lvscan to find logical volume structures. Use lvremove, vgremove and pvremove to delete them.
Keep the partitions for / (/dev/mmcblk0p2) and /boot (/dev/mmcblk0p1); but delete all others. Create a 5 Gbyte partition /dev/mmcblk0p3 and create a final partition /dev/mmcblk0p4 that fills the remainder of the SD card.
Your partition table should look something like the following. That may be small differences due to the size of your SD card. The important thing is to have no overlapping partitions. After you have carefully checked your partititions, reboot.
Device Boot Start End Sectors Size Id Type /dev/mmcblk0p1 8192 131071 122880 60M c W95 FAT32 (LBA) /dev/mmcblk0p2 131072 16908287 16777216 8G 83 Linux /dev/mmcblk0p3 16908288 27394047 10485760 5G 83 Linux /dev/mmcblk0p4 27394048 31422463 4028416 1.9G 83 Linux
Now format /dev/mmcblk0p4 to be an ext4 file system.
Within the /dev/mmcblk0p3 partition create
a volume group csci373VG with three logical volumes:
msdos373LV with 32 MB,
ext373LV with 2 GB, and
xfs373LV with 2 GB.
The ubutu LVM wiki will
show you how to do this.
Run pvdisplay, vgdisplay and lvdisplay to verify that you have performed this correctly. Check out the following capture of the output of lvdisplay to see if you got it right.
Create mount points for your four file systems and modify /etc/fstab so these are mounted at boot time. ake sure that df produces roughly the following output. (The file usage may be different.) This example shows you how your should name your mount point directories.
Filesystem 1K-blocks Used Available Use% Mounted on /dev/mmcblk0p4 1949776 618096 1214588 34% /mnt/yourid /dev/mapper/csci373VG-msdos373LV 32686 2 32684 1% /mnt/msdos /dev/mapper/csci373VG-ext373LV 1998672 100208 1777224 6% /mnt/ext /dev/mapper/csci373VG-xfs373LV 2086912 282424 1804488 14% /mnt/xfs
Copying your home
First, copy all the non-dot files and directories of your home directory on the CSCI Linux computers to /mnt/yourid on your Pi. (If you run out of space, just delete enough files to get /mnt/yourid to less the 512 Mbytes of storage.) Then, copy all the files and directories of your home directory on Pi to /mnt/yourid on your Pi. This will replace many files.
Moving to a new home
You’ll need to log in using the csci373 account to do this
step.
Change /etc/fstab to mount the /dev/mmcblk0p4 as your Pi home directory. You’ll need to umount and remount /dev/mmcblk0p4 to get this to work.
Backing up your home directory
Use dump and Use gzip to make a backup of your home directory. Leave the backup in the /var/tmp directory.
Turn in
You don’t need to turn anything in. I will login to your personal Pi and check it out. However, there is a Homework 7 moodle page for grades and comments.