Bug 1313228
| Summary: | promotions and demotions not happening after attach tier due to fix layout taking very long time(3 days) | |||
|---|---|---|---|---|
| Product: | [Community] GlusterFS | Reporter: | Joseph Elwin Fernandes <josferna> | |
| Component: | tiering | Assignee: | bugs <bugs> | |
| Status: | CLOSED CURRENTRELEASE | QA Contact: | bugs <bugs> | |
| Severity: | medium | Docs Contact: | ||
| Priority: | medium | |||
| Version: | mainline | CC: | bugs, byarlaga, dlambrig, kramdoss, nbalacha, nchilaka, sankarshan | |
| Target Milestone: | --- | Keywords: | ZStream | |
| Target Release: | --- | |||
| Hardware: | Unspecified | |||
| OS: | Unspecified | |||
| Whiteboard: | tier-migration | |||
| Fixed In Version: | glusterfs-3.8rc2 | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | ||
| Clone Of: | 1294790 | |||
| : | 1323016 (view as bug list) | Environment: | ||
| Last Closed: | 2016-06-16 13:58:44 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: | 1294790 | |||
| Bug Blocks: | 1299184, 1323016 | |||
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Comment 1
Vijay Bellur
2016-03-01 08:44:23 UTC
REVIEW: http://review.gluster.org/13491 (tier/dht : Attach tier fix layout to run in background + T file entry for cold tier.) posted (#7) for review on master by Joseph Fernandes REVIEW: http://review.gluster.org/13491 (tier/dht : Attach tier fix layout to run in background + T file entry for cold tier.) posted (#8) for review on master by Joseph Fernandes REVIEW: http://review.gluster.org/13491 (tier/dht : Attach tier fix layout to run in background + T file entry for cold tier.) posted (#9) for review on master by Joseph Fernandes REVIEW: http://review.gluster.org/13491 (tier/dht : Attach tier fix layout to run in background + T file entry for cold tier.) posted (#10) for review on master by Dan Lambright (dlambrig) REVIEW: http://review.gluster.org/13491 (tier/dht : Attach tier fix layout to run in background + T file entry for cold tier.) posted (#11) for review on master by Joseph Fernandes REVIEW: http://review.gluster.org/13491 (tier/dht : Attach tier fix layout to run in background) posted (#12) for review on master by Joseph Fernandes REVIEW: http://review.gluster.org/13491 (tier/dht : Attach tier fix layout to run in background) posted (#13) for review on master by Joseph Fernandes COMMIT: http://review.gluster.org/13491 committed in master by Dan Lambright (dlambrig) ------ commit b67e569b3906d99677a1349cb82668f9088cf4eb Author: Joseph Fernandes <josferna> Date: Tue Feb 23 12:51:45 2016 +0530 tier/dht : Attach tier fix layout to run in background 1. Spawn a thread for background fix-layout for tier process. 2. Once the fix-layout is completed a marker xttr is set on the root of volume to mark the completion of the background fixlayout, so that even if the tier process is spawned again, fixlayout will not be issued, if it was completed last time. 3. Please note that promotion of legacy files will happen eventually as the ctr lookup heal in the fixlayout slowly heals the ctr db for legacy files OR the ctr lookup heal happend due to a name lookup. 4. When a detach tier is successful in evacuation data from hot tier, we remove the marker xattr is removed. So that next attach tier runs the background tier fixlayout. what is remaining ? 1. Instead of clearing the marker xattr of tiering fix layout at the end of detach start clear it during detach commit. But the issue is detach commit is a glusterd operation and the volume is not mounted in glusterd. The reason we want to do it in detach commit is that if the admin wants to attach the same tier again, then a background fixlayout will be triggered, which would not be needed. 2. Clearing the CTR DB of the cold bricks when there is a detach commit, as it will be having entries which will be stale when the volume is used, with ctr off (ctr is switched off only when we have detach commit.) Change-Id: Ibe343572e95865325cd0eef4d0b976b626a3c0c5 BUG: 1313228 Signed-off-by: Joseph Fernandes <josferna> Reviewed-on: http://review.gluster.org/13491 Smoke: Gluster Build System <jenkins.com> Tested-by: Joseph Fernandes NetBSD-regression: NetBSD Build System <jenkins.org> CentOS-regression: Gluster Build System <jenkins.com> Reviewed-by: Dan Lambright <dlambrig> This bug is getting closed because a release has been made available that should address the reported issue. In case the problem is still not fixed with glusterfs-3.8.0, please open a new bug report. glusterfs-3.8.0 has been announced on the Gluster mailinglists [1], packages for several distributions should become available in the near future. Keep an eye on the Gluster Users mailinglist [2] and the update infrastructure for your distribution. [1] http://blog.gluster.org/2016/06/glusterfs-3-8-released/ [2] http://thread.gmane.org/gmane.comp.file-systems.gluster.user |