rpm 5.x in Th

[Jeffrey Johnson]

On Sep 24, 2012, at 9:56 AM, Elan Ruusamäe wrote:

> On 24.09.2012 16:34, Jeffrey Johnson wrote:
>>> >last time i had upgraded python and found that moinmoin stopped working on it, so some symlinks (it was easier to symlink files and then rm ones i did not want to downgrade) and rpm -Fhv *.rpm --downgrade --nomd5
>>> >
>> Your symlink trick is clever but I don't recall any serious measurement of performance.
> 
> it's not because of performance, it's because this how i picked packages to downgrade:
> 0. cd /var/spool/repackage
> 1. ln -s */python*.rpm .
> 2. ln -s */somethingelse* .
> 3. rm *not*this*.rpm *not*that*.rpm
> 4. ls # to verify
> 

I am (mis-?)remembering a claim of using symlinks instead of copying file content
with paths from packages that you claimed speeded up installs from a few years back.

But using symlinks for packages (not package files) hasn't anything to do with package operations.

> or you mean my own performance? yes, i performed the upgrade a lot faster than looking each package which needed downgrade as well due new python bytecode dependency missing :)
> 
> i personally don't like --force & --nodeps (like gotar snippet),
> so i tried to pick packages that resulted all dependencies remaining okay after downgrade.
> 

Try --nofsync when setting up chroot's (or doing operations where you are prepared yo
discard everything the operation fails). The fsync() operation is as costly as --nofdigests).

>> 
>> Is this result successful or not?
> yes py 2.7 -> py 2.6 downgrade was success
> 
Good.
> 
> -- 
> glen
> 
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