Red Hat Bugzilla – Bug 75887
Strange error after rebuilddb
Last modified: 2008-05-01 11:38:04 EDT
Description of Problem: Strange error output after rebuild of db Version-Release number of selected component (if applicable): 8.0 Psyche How Reproducible: Always Steps to Reproduce: For some reason, DB became corrupt. 0. Follow instructions at rpm.org to recover corrupt DB 1. Install db4-utils with nodeps on default Psyche 2. db_verify Packages results in 2 errors: db_verify: Bucket 2 has impossible first page 2042 db_verify: Hash bucket 3 maps to non-hash page 2043 db_verify: DB->verify: Packages: DB_VERIFY_BAD: Database verification failed 3. mv Packages Packages.org 4. db_dump Packages.org | db_load Packages 5. rpm -qa runs ok 6. rpm --rebuilddb runs ok 7. rpm -qa shows following strange output for many entries: error: rpmdbNextIterator: skipping h# 393 Header V3 DSA signature: BAD, key ID db42a60e Tried rpm-4.1-9 test package, will not install, segmentation fault. Additional Information:
What version of rpm is currently installed?
Psyche GM version of rpm... 4.1-1.06. Also, how can I re-install this version. Suspect install of test version messed things up. Ran for a while and then hung. Had to kill the install.
Your "suspect" is incorrect, there's only a handful of changes. The messages come from signature/digest verifcation failures on headers retrieved. If there's lots of those failures, then there's some problem with the data in the files, probably caused by something other than rpm. So what caused the problem in the 1st place?
That makes sense. Corruption occured when running Synaptic on top of apt. Not sure exactly what happened. This has been running quite well for over a week. Is there any way to clear things up (freshen, etc) or is it re-install time?
Another thought...is it possible that Synaptic or apt is gorping the headers and this was not discovered until a rebuild was necessary (maybe due to 4.1 incompatibilities)? The corruption that occured was with the Packages db file. The db_dump/db_load clears that up just fine...
Dunno Synaptic/apt. rpm-4.1 has an incompatible API, but packages/database are known to be "compatible" with rpm-4.0.4. In fact, rpm-4.0.4 is what's used by the anaconda installer. You have several options: 1) (easy) reinstall 2) (quick) steal /var/lib/rpm from a similarly configured machine, do a spot check on important directories (rpm -Vf /bin/* ...) and fix (by reinstalling a known copy of packages) 3) (doable) There should be a list of installed packages in /var/log/rpmpkgs. Find those packages (the hard part) and reinstall with --justdb to recreate the database.