LinuxQuestions.org - [SOLVED] Managing Disks and Partitions

Hi,

I have an Ubuntu.12.04 64bit server VM which I have created with a single 60GB Virtual Disk:

Code:

root@myServer:~# df -h

Filesystem              Size  Used Avail Use% Mounted on

/dev/mapper/argus-root  58G  2.9G  52G  6% /

udev                    992M  4.0K  992M  1% /dev

tmpfs                  401M  340K  400M  1% /run

none                    5.0M    0  5.0M  0% /run/lock

none                  1001M    0 1001M  0% /run/shm

/dev/sda1              228M  25M  192M  12% /boot

I have no experience in managing partitions nor manipulating fileSystems, still, I added this VM two disks:

one for logs - 7GB, where I'd like to point /var/log/
and other for the MySQL databases - 20GB, where I'd like to point /var/lib/mysql

I have added those disks using the VMware Player's GUI and they are correctly associated with my ubuntu VM.

I just didn't understand

why are the disks not listed with the df command,
nor how to make them be recognized
and more importantly, how will I map the mentioned parts of my actual FileSystem to these new disks

I began following some instructions and found those two drives were '/dev/sdb' and '/dev/sdc', both with:

Code:

Disk identifier: 0x00000000

Disk /dev/sdc doesn't contain a valid partition table

For each drive I've done:

mkfs.ext4 /dev/sdb
chmod -R 777 <mounting point>
mount /dev/sdb <mounting point>

And afterwords I've edited /etc/fstab and added an entry for each drive:

Code:

root@argus:~# cat /etc/fstab

# /etc/fstab: static file system information.

# <file system> <mount point>  <type>  <options>      <dump>  <pass>

proc            /proc          proc    nodev,noexec,nosuid 0      0

/dev/mapper/argus-root /              ext4    errors=remount-ro 0      1

# /boot was on /dev/sda1 during installation

UUID=0daeb714-1f37-46db-9ab2-a469cfb36e5d /boot          ext2    defaults        0      2

/dev/mapper/argus-swap_1 none            swap    sw              0      0

/dev/fd0        /media/floppy0  auto    rw,user,noauto,exec,utf8 0      0

/dev/sdb        /var/lib/mysql  ext4    defaults        0      0

/dev/sdc        /var/log        ext4    defaults        0      0

How do I make sure my changes were successfully implemented? Do I have to copy a large file to one of the mountingpoints and check if the refpective assigned drive's ocupation is increasing?

Thank you very much