Bug 1723746
| Summary: | Booting with a large number of multipath devices drops into emergency shell [rhel-8.0.0.z] | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 8 | Reporter: | Oneata Mircea Teodor <toneata> |
| Component: | device-mapper-multipath | Assignee: | Ben Marzinski <bmarzins> |
| Status: | CLOSED ERRATA | QA Contact: | Lin Li <lilin> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | --- | CC: | agk, bmarson, bmarzins, heinzm, jbrassow, lilin, msnitzer, prajnoha, rhandlin, rpeterso, toneata, ttracy, zkabelac |
| Target Milestone: | rc | Keywords: | ZStream |
| Target Release: | 8.0 | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | device-mapper-multipath-0.7.8-7.1 | Doc Type: | Bug Fix |
| Doc Text: |
Cause:
When multipath is determining whether it should claim a block device as a path device in udev, it checks if multipathd is running by openning a socket connection to it. If multipathd hasn't started up yet adn there are a large number of block devics, this can hang, causing udev to hang as well.
Consequence:
udev processing for block devices can be delayed on bootup, possibly causing the bootup to fail to the emergency shell.
Fix:
multipath now tries to connect to the multipathd socket in a nonblocking manner. If that fails, it looks at the error to determine if multipathd will be starting up.
Result:
multipath no longer causes udev processing of block devices to hang in setups with a large number of block devices.
|
Story Points: | --- |
| Clone Of: | 1700451 | Environment: | |
| Last Closed: | 2019-07-29 08:28:25 UTC | Type: | Bug |
| 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: | 1700451 | ||
| Bug Blocks: | |||
|
Comment 7
errata-xmlrpc
2019-07-29 08:28:25 UTC
|