| Date | Sat, 12 Jul 2003 11:58:16 -0400 | From | Jeff Garzik <> | Subject | Re: 2.5 'what to expect' |
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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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