Re: stop stupidly telling people to do "yum clean all" when it's not necessary

On Tue, 2009-09-15 at 16:00 -0700, Kam Leo wrote:
On Tue, Sep 15, 2009 at 3:43 PM, Patrick O'Callaghan
<pocallaghan@xxxxxxxxx> wrote:
On Tue, 2009-09-15 at 14:34 -0700, Alan Evans wrote:
I have myself found that "yum clean all" apparently fixes many
problems even when I'm not sure why it should. When I have a problem
updating, I usually start with cleaning the cache and metadata just to
establish a baseline. Ninety percent of the time, this first step
makes my problem go away. But apparently that approach means I'm
stupid.

Have you tried "yum clean metadata" in any of these cases, rather than
"yum clean all"? If not, how do you know that the former would not have
worked?

My personal experience is that cleaning metadata has *always* fixed
problems without the need for cleaning the cache. That may not be
everyone's experience, but it is mine. Even if it doesn't always work,
it is always faster, and doesn't stop you cleaning the cache later if
you need to. IOW the sensible procedure is:

yum clean metadata
iff that doesn't solve the problem: yum clean all

poc

That's two operations! My personal experience is that very few
packages are in the yum package cache when I encounter a problem.. I
have an acceptable speed network connection (8 MBits/S) so the cost of
re-downloading packages is not a big factor for me. The "clean all"
option is more efficient for me than iteratively going through the
"clean" options one at a time.

For those of us on 1 Mbps (shared among several machines in the home)
the equation is different. I'm sure people on dialup feel this even more
strongly.

poc

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