Bug 1273173
| Summary: | Need update documents for queue_without_daemon option of multipath as its default value changed. | ||
|---|---|---|---|
| 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
|
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 |