Bug 1190734
Summary: | Enhancement to readdir for tiered volumes | ||
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Product: | [Community] GlusterFS | Reporter: | Dan Lambright <dlambrig> |
Component: | core | Assignee: | Dan Lambright <dlambrig> |
Status: | CLOSED CURRENTRELEASE | QA Contact: | |
Severity: | high | Docs Contact: | |
Priority: | unspecified | ||
Version: | mainline | CC: | bugs, dlambrig, gluster-bugs |
Target Milestone: | --- | Keywords: | FutureFeature |
Target Release: | --- | ||
Hardware: | x86_64 | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | Enhancement | |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2015-05-14 17:26:27 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: |
Description
Dan Lambright
2015-02-09 14:43:55 UTC
REVIEW: http://review.gluster.org/9688 (cluster/dht: Change the subvolume encoding in d_off to be a "global" position in the graph rather than relative (local) to a particular translator.) posted (#1) for review on master by Dan Lambright (dlambrig) REVIEW: http://review.gluster.org/9688 (cluster/dht: Change the subvolume encoding in d_off to be a "global" position in the graph rather than relative (local) to a particular translator.) posted (#2) for review on master by Dan Lambright (dlambrig) REVIEW: http://review.gluster.org/9688 (cluster/dht: Change the subvolume encoding in d_off to be a "global" position in the graph rather than relative (local) to a particular translator.) posted (#3) for review on master by Dan Lambright (dlambrig) REVIEW: http://review.gluster.org/9688 (cluster/dht: Change the subvolume encoding in d_off to be a "global" position in the graph rather than relative (local) to a particular translator.) posted (#4) for review on master by Dan Lambright (dlambrig) REVIEW: http://review.gluster.org/9688 (cluster/dht: Change the subvolume encoding in d_off to be a "global" position in the graph rather than relative (local) to a particular translator.) posted (#5) for review on master by Dan Lambright (dlambrig) REVIEW: http://review.gluster.org/9688 (cluster/dht: Change the subvolume encoding in d_off to be a "global" position in the graph rather than relative (local) to a particular translator.) posted (#6) for review on master by Dan Lambright (dlambrig) COMMIT: http://review.gluster.org/9688 committed in master by Vijay Bellur (vbellur) ------ commit a216745e5db3fdb4fa8d625c971e70f8d0e34d23 Author: Dan Lambright <dlambrig> Date: Wed Feb 18 14:49:50 2015 -0500 cluster/dht: Change the subvolume encoding in d_off to be a "global" position in the graph rather than relative (local) to a particular translator. Encoding the volume in this way allows a single translator to manage which brick is currently being scanned for directory entries. Using a single translator minimizes allocated bits in the d_off. It also allows multiple DHT translators in the same graph to have a common frame of reference (the graph position) for which brick is being read. Multiple DHT translators are needed for the Tiering feature. The fix builds off a previous change (9332) which removed subvolume encoding from AFR. The fix makes an equivalent change to the EC translator. More background can be found in fix 9332 and gluster-dev discussions [1]. DHT and AFR/EC are responsibile (as before) for choosing which brick to enumerate directory entries in over the readdir lifecycle. The client translator receiving the readdir fop encodes the dht_t. It is referred to as the "leaf node" in the graph and corresponds to the brick being scanned. When DHT decodes the d_off, it translates the leaf node to a local subvolume, which represents the next node in the graph leading to the brick. Tracking of leaf nodes is done in common utility functions. Leaf nodes counts and positional information are updated on a graph switch. [1] www.gluster.org/pipermail/gluster-devel/2015-January/043592.html Change-Id: Iaf0ea86d7046b1ceadbad69d88707b243077ebc8 BUG: 1190734 Signed-off-by: Dan Lambright <dlambrig> Reviewed-on: http://review.gluster.org/9688 Reviewed-by: Xavier Hernandez <xhernandez> Reviewed-by: Krishnan Parthasarathi <kparthas> Reviewed-by: Vijay Bellur <vbellur> Tested-by: Vijay Bellur <vbellur> 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-3.7.0, please open a new bug report. glusterfs-3.7.0 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://thread.gmane.org/gmane.comp.file-systems.gluster.devel/10939 [2] http://thread.gmane.org/gmane.comp.file-systems.gluster.user 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-3.7.0, please open a new bug report. glusterfs-3.7.0 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://thread.gmane.org/gmane.comp.file-systems.gluster.devel/10939 [2] http://thread.gmane.org/gmane.comp.file-systems.gluster.user 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-3.7.0, please open a new bug report. glusterfs-3.7.0 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://thread.gmane.org/gmane.comp.file-systems.gluster.devel/10939 [2] http://thread.gmane.org/gmane.comp.file-systems.gluster.user |