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Bug 1723746 - Booting with a large number of multipath devices drops into emergency shell [rhel-8.0.0.z]
Summary: Booting with a large number of multipath devices drops into emergency shell ...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: device-mapper-multipath
Version: ---
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: 8.0
Assignee: Ben Marzinski
QA Contact: Lin Li
URL:
Whiteboard:
Depends On: 1700451
Blocks:
TreeView+ depends on / blocked
 
Reported: 2019-06-25 09:32 UTC by Oneata Mircea Teodor
Modified: 2021-09-06 15:20 UTC (History)
13 users (show)

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.
Clone Of: 1700451
Environment:
Last Closed: 2019-07-29 08:28:25 UTC
Type: Bug
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2019:1872 0 None None None 2019-07-29 08:28:26 UTC

Comment 7 errata-xmlrpc 2019-07-29 08:28:25 UTC 
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-2019:1872
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