Upgrade Varnish will not replace the libraries

[Kelvin Loke]

Hi,

Just thought of sharing it to have some suggestion/enhancement on
Varnish upgrade.

Using Ubuntu 10.04 LTS 64-bit, with Varnish 3.0.2. When I tried to
upgrade Varnish to 3.0.3, It seems that it cannot upgrade the Varnish
shared libraries automatically.

# apt-get install varnish
Reading package lists... Done
Building dependency tree
Reading state information... Done
Suggested packages:
  varnish-doc
The following packages will be upgraded:
  varnish
1 upgraded, 0 newly installed, 0 to remove and 105 not upgraded.
Need to get 531kB of archives.
After this operation, 49.2kB of additional disk space will be used.
Get:1 http://repo.varnish-cache.org/ubuntu/ lucid/varnish-3.0 varnish
3.0.3-1~lucid [531kB]
Fetched 531kB in 3s (156kB/s)
(Reading database ... 46434 files and directories currently installed.)
Preparing to replace varnish 3.0.2-1~1lucid1 (using
.../varnish_3.0.3-1~lucid_amd64.deb) ...
 * Stopping HTTP accelerator varnishd                     [ OK ]
Unpacking replacement varnish ...
dpkg: warning: unable to delete old directory '/var/lib/varnish':
Directory not empty
Processing triggers for ureadahead ...
ureadahead will be reprofiled on next reboot
Processing triggers for man-db ...
Setting up varnish (3.0.3-1~lucid) ...
Installing new version of config file /etc/init.d/varnishncsa ...
Installing new version of config file /etc/default/varnishlog ...
Installing new version of config file /etc/default/varnishncsa ..
                                                              .

Configuration file `/etc/default/varnish'
 ==> Modified (by you or by a script) since installation.
 ==> Package distributor has shipped an updated version.
   What would you like to do about it ?  Your options are:
    Y or I  : install the package maintainer's version
    N or O  : keep your currently-installed version
      D     : show the differences between the versions
      Z     : background this process to examine the situation
 The default action is to keep your current version.
*** varnish (Y/I/N/O/D/Z) [default=N] ?
 * Starting HTTP accelerator varnishd                     [ OK ]

# dpkg -l | grep varnish
ii  libvarnishapi1                  3.0.2-1~1lucid1
                                                                shared
libraries for Varnish
ii  varnish                         3.0.3-1~lucid

state of the art, high-performance web accel

Delete the /var/lib/varnish manually before the upgrade will do the
trick, but would be better to have it done in automated way :)