Bug 1273173
Summary: | Need update documents for queue_without_daemon option of multipath as its default value changed. | ||
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Product: | Red Hat Enterprise Linux 7 | Reporter: | Ben Marzinski <bmarzins> |
Component: | device-mapper-multipath | Assignee: | Ben Marzinski <bmarzins> |
Status: | CLOSED ERRATA | QA Contact: | Lin Li <lilin> |
Severity: | low | Docs Contact: | |
Priority: | low | ||
Version: | 7.3 | CC: | agk, bmarzins, dwysocha, fge, heinzm, lilin, msnitzer, prajnoha, prockai, rbalakri, storage-qe, zkabelac |
Target Milestone: | rc | ||
Target Release: | --- | ||
Hardware: | All | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | device-mapper-multipath-0.4.9-87.el7 | Doc Type: | Bug Fix |
Doc Text: |
documentation fix. No Doc Text necessary
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Story Points: | --- |
Clone Of: | 818404 | Environment: | |
Last Closed: | 2016-11-04 08:13:55 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: | 818404 | ||
Bug Blocks: |
Comment 2
Ben Marzinski
2016-02-26 21:27:22 UTC
Reproduced on device-mapper-multipath-0.4.9-85.el7 1).# man multipath.conf queue_without_daemon If set to no , when multipathd stops, queueing will be turned off for all devices. This is useful for devices that set no_path_retry. If a machine is shut down while all paths to a device are down, it is pos‐ sible to hang waiting for IO to return from the device after multipathd has been stopped. Without multipathd running, access to the paths cannot be restored, and the kernel cannot be told to stop queueing IO. Setting queue_without_daemon to no , avoids this problem. Default is yes <------------------- 2).# multipathd -k'show config' | grep queue_without_daemon queue_without_daemon "no" 3).# multipathd show config | grep queue_without_daemon queue_without_daemon "no" 4).# multipath -t | grep queue_without_daemon queue_without_daemon "no" Verified on device-mapper-multipath-0.4.9-87.el7 1).# man multipath.conf queue_without_daemon If set to no , when multipathd stops, queueing will be turned off for all devices. This is useful for devices that set no_path_retry. If a machine is shut down while all paths to a device are down, it is pos‐ sible to hang waiting for IO to return from the device after multipathd has been stopped. Without multipathd running, access to the paths cannot be restored, and the kernel cannot be told to stop queueing IO. Setting queue_without_daemon to no , avoids this problem. Default is no <------------------- 2).# multipathd -k'show config' | grep queue_without_daemon queue_without_daemon "no" 3).# multipathd show config | grep queue_without_daemon queue_without_daemon "no" 4).# multipath -t | grep queue_without_daemon queue_without_daemon "no" Test result: man page of multipath.conf change default value of queue_without_daemon to "queue_without_daemon no" 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://rhn.redhat.com/errata/RHBA-2016-2536.html |