Re: rpm installation inside another rpm - database locked [wd-vc]

[Jeff Johnson <n3npq jbj gmail com>]

On Dec 22, 2005, at 3:09 PM, dkegel wrote:

> Sorry, I don't think you can install RPMs from inside another RPM.

You're wrong.

As long as concurrent access to /var/lib/rpm is enabled (the default  
since rpm-4.1),
then one can run rpm -q (and rpm -Uvh) in %post.

In rpm-4.4.2 and later, there is another wrinkle needed, to get rid  
of the transaction fcntl lock.

This can be done by adding either
    rm -f /var/lock/rpm/transaction
or
    rm -f /var/lib/rpm/__db.000
depending on what path is in use. Removing both won't hurt anything,  
the concurrent
access locks in Berkeley DB are more than sufficient to ensure  
concurrency.

The real trick is doing all this portably and reliably. That's called  
trying and testing.

Or keep guessing whether rpm can actually do whatever, that works too.

73 de Jeff