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Date: Sat, 21 Feb 2015 15:47:22 -0500
From: Jeffrey Johnson <n3npq@....com>
To: owl-dev@...ts.openwall.com
Subject: Re: removing /var/lib/rpm/__db.00? on rpm upgrade (was: recent updates)
Hi --
(aside)
I've just joined owl-dev@ mailing list and
will be trying to install 3.1-stable and current
in the next few days
> BTW, we (you?) should probably introduce a trigger into rpm.spec, so
> that /var/lib/rpm/__db.00? are automatically removed on upgrades from
> our older versions of rpm known to have these in incompatible format.
> Otherwise our end-users would run into the same problem when upgrading
> e.g. from Owl 3.1-stable to Owl-current, even with binaries.
> We already have:
> %triggerpostun -- %name < 4.2-owl22
> # Remove __db.00? files that look like they're pre-NPTL. We may be removing
> # files that are opened and/or memory-mapped by us (by the rpm process that
> # installs the new rpm package), but that's OK. The next invocation of rpm
> # will recreate the files. 4.2-owl22 is when we added this trigger, and we
> # were already using NPTL at the time, so there is no need to perform the
> # size check and possibly remove the files when upgrading from newer versions.
> RPMDBDIR=/var/lib/rpm
> if [ -f $RPMDBDIR/__db.001 -a "`wc -c < $RPMDBDIR/__db.001`" -le 8192 ]; then
> rm -f $RPMDBDIR/__db.00?
> fi
You shouldn't simply remove __db.00? files even if that "works".
At a minimum, run
db53_recover -h /var/lib/rpm
in %posttrans where /var/lib/rpm is quiescent.
> We probably need a similar section for the recent rpm update as well.
> Would both sections fire when upgrading from even older rpm, though
> (prior to 4.2-owl22)? Would that be OK? I guess so, but perhaps the
> old section above will become redundant, and thus we need to replace it
> rather than add another? This needs some thinking and testing.
Let me catch up with Owl packaging and I'll try to send along a patch.
hth
73 de Jeff
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