Ah, thanks for the explanation.

One thing is still unclear for me, though: Why is it not a good idea to have 2+ cache on same disk?

In my understanding (CMIIW), aufs is better for larger objects while coss is better for smaller objects (or the other way around).


Rgds.


[p]


Amos Jeffries wrote:
Pandu E Poluan wrote:
All,

I currently use ufs. Based on discussions here and elsewhere, it seem better to use aufs+coss.

So, if I want to change over to ufs, is it enough to do the following:

   * Stop squid
   * Recursive-delete the cache directory
   * Run squid -z
   * Start squid

Inputs are appreciated. Thanks beforehand :-)


Only if you are taking a portion of the current UFS cache and giving it to COSS (not a good idea to have 2+ cache on same disk anyway).

To simply change the existing UFS cache to AUFS and add a new disk for COSS all you need is this:

 * partition/format COSS disk
 * configure new coss cache_dir in squid.conf
 * change ufs tag to aufs in squid.conf
 * stop squid
 * run squid -z
 * restart squid

NP: I only bother stopping to be 100% certain the change to aufs does not make the -z alter anything in active use. It is probably only a -z then reconfigure needed.

Amos

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