sudo apt-get install mysql-server mysql-client
Reading package lists... Done
Building dependency tree
Reading state information... Done
mysql-server is already the newest version.
You might want to run `apt-get -f install' to correct these:
The following packages have unmet dependencies:
  mysql-server: Depends: mysql-server-5.1 but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

CrashSlice ~: sudo apt-get -f install
Reading package lists... Done
Building dependency tree
Reading state information... Done
Correcting dependencies... Done
The following extra packages will be installed:
  mysql-server-5.1
Suggested packages:
  tinyca mailx
The following NEW packages will be installed:
  mysql-server-5.1
0 upgraded, 1 newly installed, 0 to remove and 146 not upgraded.
1 not fully installed or removed.
Need to get 0B/7,111kB of archives.
After this operation, 15.7MB of additional disk space will be used.
Do you want to continue [Y/n]? y
Preconfiguring packages ...
(Reading database ... 39349 files and directories currently installed.)
Unpacking mysql-server-5.1 (from .../mysql-server-5.1_5.1.66-0ubuntu0.10.04.3_amd64.deb) ...
ERROR: There's not enough space in /var/lib/mysql/
dpkg: error processing /var/cache/apt/archives/mysql-server-5.1_5.1.66-0ubuntu0.10.04.3_amd64.deb (--unpack):
 subprocess new pre-installation script returned error exit status 1
Errors were encountered while processing:
 /var/cache/apt/archives/mysql-server-5.1_5.1.66-0ubuntu0.10.04.3_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)