Bug 101401
| Summary: | rpm hang while installing package | ||
|---|---|---|---|
| Product: | [Retired] Red Hat Linux Beta | Reporter: | Charlie Brady <charlieb-redhat-bugzilla> |
| Component: | rpm | Assignee: | Jeff Johnson <jbj> |
| Status: | CLOSED WORKSFORME | QA Contact: | Mike McLean <mikem> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | beta1 | ||
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i386 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2003-07-31 18:50:29 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
It's relevant I'm sure that this was an upgrade from RH8, not a fresh install of Severn, so the problem could be related to the existing rpm db files. Yes, stale locks need to be manually removed after "kill -9". There's no practical way to automate stale lock detection because of races, i.e. detecting existence of locks and processes cannot be done quickly enough, removing __db* files can/will introduce windows where locking will not happen correctly. So "kill -9" cleanup is left to the user as a pathological case. Upgrade from RHL8 might be relevant, as glibc is changing the pthread implementation foing from 8 -> 9. I know of no reproducible problems, but odd corner cases, difficult to reproduce, might very well exist. If you can reproduce a condition where stale locks are left, please reopen this bug and I will try to analyze. |
Description of problem: Hang occurred in Add/remove software widget (python SinglePackageWindow.py) on maybe fourth or fifth package installed. strace showed: futex(0xbd0d2310, FUTEX_WAIT, 0, NULL /var/lib/rpm/__db.00{1,2,3} existed. "rpm -qa" (and any other rpm operation) then hung as well. Killing the process with -9, and removing the __db* files allowed rpm to function again. I don't know whether this was reproducible or not, and I've now wiped the disk.