Bug 1314586
| Summary: | limited performance gain for small-file workloads on tiered volumes | ||
|---|---|---|---|
| Product: | [Community] GlusterFS | Reporter: | Dan Lambright <dlambrig> |
| Component: | tiering | Assignee: | bugs <bugs> |
| Status: | CLOSED WONTFIX | QA Contact: | bugs <bugs> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | mainline | CC: | bugs, madam, mpillai, nbalacha, nchilaka, rgowdapp, rhs-bugs, sankarshan |
| Target Milestone: | --- | Keywords: | Performance, ZStream |
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | tier-performance | ||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | 1292391 | Environment: | |
| Last Closed: | 2018-11-02 08:13:36 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: | 1292391 | ||
| Bug Blocks: | 1427783 | ||
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Comment 1
Vijay Bellur
2016-03-04 01:12:23 UTC
REVIEW: http://review.gluster.org/13601 (cluster/tier: WIP optimize lookups for tiering) posted (#2) for review on master by Dan Lambright (dlambrig) REVIEW: http://review.gluster.org/13601 (cluster/tier: optimize lookups for tiering) posted (#3) for review on master by Dan Lambright (dlambrig) REVIEW: http://review.gluster.org/13601 (cluster/tier: WIP optimize lookups for tiering) posted (#4) for review on master by Dan Lambright (dlambrig) I think the dependency between upstream and downstream bug is reversed here: - This (bug #1314586) is the upstream bug. - Bug #1292391 is the downstream bug. we have: - upstream bug depends on downstream bug. which makes no sense, imho, since we first need to fix the bug upstream before we can port the fix to downstream. Hence we should have: - downstream bug depends on upstream bug. my 2 cents. Patch https://review.gluster.org/#/c/glusterfs/+/21331/ removes tier functionality from GlusterFS. https://bugzilla.redhat.com/show_bug.cgi?id=1642807 is used as the tracking bug for this. Recommendation is to convert your tier volume to regular volume (either replicate, ec, or plain distribute) with "tier detach" command before upgrade, and use backend features like dm-cache etc to utilize the caching from backend to provide better performance and functionality. |