| Summary: | Make alua prioritizer able to exclusively use the preferred path, if available | |||
|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Ben Marzinski <bmarzins> | |
| Component: | device-mapper-multipath | Assignee: | Ben Marzinski <bmarzins> | |
| Status: | CLOSED ERRATA | QA Contact: | Zhang Yi <yizhan> | |
| Severity: | unspecified | Docs Contact: | Milan Navratil <mnavrati> | |
| Priority: | unspecified | |||
| Version: | 7.1 | CC: | agk, bmarzins, dwysocha, hartsjc, heinzm, lilin, mnavrati, msnitzer, prajnoha, prockai, rbalakri, rweiss, slevine, zkabelac | |
| Target Milestone: | rc | |||
| Target Release: | --- | |||
| Hardware: | Unspecified | |||
| OS: | Unspecified | |||
| Whiteboard: | ||||
| Fixed In Version: | device-mapper-multipath-0.4.9-87.el7 | Doc Type: | Release Note | |
| Doc Text: |
The "exclusive_pref_bit" optional argument has been added to the *multipath* ALUA prioritizer
If the "exclusive_pref_bit" argument is added to the *multipath* Asymmetric Logical Unit Access (ALUA) prioritizer, and a path has the Target Port Group Support (TPGS) `pref` bit set, *multipath* makes a path group using only that path and assigns the highest priority to the path. Users can now either allow the preferred path to be in a path group with other paths that are equally optimized, which is the default option, or in a path group by itself by adding the "exclusive_pref_bit" argument.
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Story Points: | --- | |
| Clone Of: | 1289353 | |||
| : | 1364188 (view as bug list) | Environment: | ||
| Last Closed: | 2016-11-04 08:17:04 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: | ||
| Bug Depends On: | 1289353, 1305997 | |||
| Bug Blocks: | 1295577, 1313485, 1364188 | |||
Oops. Comment 1 used the RHEL6 syntax. In RHEL7, you would add prio_args "exclusive_pref_bit" to your device configuration. This is only used if you have prio "alua" set as well. 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 |
The multipath alua prioritizer now allows a an option, "exclusive_pref_bit" If you use prio "alua exclusive_pref_bit" in your device configuration, multipath will create a pathgroup that only contains the path with the pref bit set, and will give that pathgroup the highest priority.