Bug 1338759
| Summary: | unable to shutdown - dracut loop rm: cannot remove /lib/drauct/hooks/shutdown/30-dm-shutdown.sh: Read-only filesystem | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Marcel Kolaja <mkolaja> |
| Component: | dracut | Assignee: | dracut-maint |
| Status: | CLOSED ERRATA | QA Contact: | Release Test Team <release-test-team-automation> |
| Severity: | urgent | Docs Contact: | |
| Priority: | urgent | ||
| Version: | 7.1 | CC: | alexey.dushechkin, andrea, bugzilla, christopher_dearborn, dburkland, djuran, dkelson, dracut-maint-list, dracut-maint, fkrska, gianluca.cecchi, harald, ipilcher, jdonohue, jmagrini, jonathan, jstodola, kyoshida, ldomb, linforpros, mbanas, mkovarik, mlinden, mrunge, myllynen, rnishtal, rsussman, sjenning, skinjo, sserna, stuartjames, tbarron, thomas.cappetta, vcojot, zbyszek |
| Target Milestone: | rc | Keywords: | Reopened, ZStream |
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: |
Cause:
If a mount point resides in /run on shutdown and cannot be unmounted, systemd will mount this mountpoint read-only.
This propagates to /run being read-only.
Consequence:
When the dracut shutdown procedure runs in a /run root to disassemble and unmount the old real root, its /run is read-only. dracut expects a writable /run, though, so it fails on shutdown.
Fix:
If dracut encounters a read-only /run on shutdown, it remounts it writeable.
Result:
The dracut shutdown procedure to disassemble and unmount the old real root succeeds.
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Story Points: | --- |
| Clone Of: | 1178497 | Environment: | |
| Last Closed: | 2016-06-23 16:33:22 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: | |||
| Bug Depends On: | 1178497 | ||
| Bug Blocks: | |||
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Description
Marcel Kolaja
2016-05-23 11:59:59 UTC
Reproduced with dracut-033-359.el7, verified with dracut-033-360.el7_2.1, system shuts down as expected. There is one warning message when trying to unmount /run/netns/namespace, which doesn't prevent from shutting down the system, and will be reported as a separate bug: [ 42.401813] systemd-shutdown[1]: Sending SIGKILL to remaining processes... [ 42.404672] systemd-shutdown[1]: Unmounting file systems. [ 42.406297] systemd-shutdown[1]: Unmounting /run/netns/namespace. [ 42.407469] systemd-shutdown[1]: Unmounting /run/netns/namespace. [ 42.408819] systemd-shutdown[1]: Unmounting /run/netns. [ 42.474532] systemd-shutdown[1]: Unmounting /run/netns/namespace. [ 42.475970] systemd-shutdown[1]: Unmounting /run/netns/namespace. [ 42.477191] systemd-shutdown[1]: Could not unmount /run/netns/namespace: Invalid argument [ 42.478824] systemd-shutdown[1]: Not all file systems unmounted, 1 left. Moving to VERIFIED. The warning message has been reported as bug 1343986. Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2016:1252 |