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SubjectRe: 2.5 'what to expect'
Jamie Lokier wrote:
> Dave Jones wrote:
>
>>- Some people seem to have trouble running rpm, most notably Red Hat 9 users.
>> This is a known bug of rpm.
>> Workaround: run "export LD_ASSUME_KERNEL=2.2.5", before running rpm.
>
>
> Ah, _thank you_.
>
> It's not an rpm bug, as such; it's a problem/bug with DB4, the
> Berkeley DB library.
>
> I just spent 2 hours trying to figure out why rpm was failing.
> write() returning EINVAL for no reason? Finally spotted that O_DIRECT
> was the significant bit.

You got it. db4+O_DIRECT == blah. (I just had a conversation yesterday
with rpm's maintainer about what the problems are)

One problem is O_DIRECT should return an error on open(2) or fcntl(2),
not write(2).

Another problem appears to be that db does not know about the alignment
requirements of O_DIRECT.


> End result: I copied an rpm database from another machine. It's wrong
> for this machine, but nearly right. Ah well.
>
> If I'd only known about the LD_ASSUME_KERNEL fix sooner.

Unfortunately, LD_ASSUME_KERNEL is a lucky hack, not a fix. rpm dlopens
a pam .so. LD_ASSUME_KERNEL doesn't work for that .so, only for rpm
itself... fun ensues.

Jeff



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