Configure write cache option of tgtd iscsi driver

Bug #1346711 reported by OpenStack Infra
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
openstack-manuals
Fix Released
High
Gauvain Pocentek

Bug Description

https://review.openstack.org/104714
commit 617e59bde660f919df0818611b911ae35f8b7247
Author: Mitsuhiro Tanino <email address hidden>
Date: Tue Jul 8 15:52:11 2014 -0400

    Configure write cache option of tgtd iscsi driver

    Cinder LVMiSCSI driver is using default value of write-cache parameter
    of tgtd iscsi driver. In this setting, write I/O from guest instance is
    cached on dirty cache of a host.(write-back mode)

    In this case, data lost may be occurred if the host crashes before
    flushing dirty cache. This may cause a lot of instances to lose
    their data.

    In order to avoid this issue, it is better to turn off the write cache.
    (write-through mode)

    This patch adds "iscsi_write_cache" parameter to configure a behavior of
    write cache. The default value is "iscsi_write_cache=on".(write-back mode)

    Closes-Bug: 1336568
    DocImpact

    Change-Id: I7a495bc6118d4254576bdf1620a04ac537b3078d
    Signed-off-by: Mitsuhiro Tanino <email address hidden>

Changed in openstack-manuals:
status: New → Confirmed
tags: added: config-reference
Changed in openstack-manuals:
importance: Undecided → High
Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix proposed to openstack-manuals (master)

Fix proposed to branch: master
Review: https://review.openstack.org/115256

Changed in openstack-manuals:
assignee: nobody → Gauvain Pocentek (gpocentek)
status: Confirmed → In Progress
Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix merged to openstack-manuals (master)

Reviewed: https://review.openstack.org/115256
Committed: https://git.openstack.org/cgit/openstack/openstack-manuals/commit/?id=8b2016b5d035b3475fe197b2132a8e1e8abff350
Submitter: Jenkins
Branch: master

commit 8b2016b5d035b3475fe197b2132a8e1e8abff350
Author: Gauvain Pocentek <email address hidden>
Date: Tue Aug 19 11:22:22 2014 +0200

    Update the config reference tables

    Include the new tables in the documentation.

    Fix the cinder-prophetstor_dpl.xml filename and the xiv category.

    Manually fix those files for niceness test:
    - glance-logging.xml (lines 34, 38), fixed in oslo-incubator
    - trove-logging.xml (lines 26, 30), fixed in oslo-incubator
    - neutron-openvswitch_agent.xml (line 45), to be fixed in neutron

    Closes-Bug: #1340858
    Closes-Bug: #1344231
    Closes-Bug: #1345956
    Closes-Bug: #1346711
    Closes-Bug: #1347978
    Partial-Bug: #1348329
    Closes-Bug: #1352074
    Partial-Bug: #1353417
    Closes-Bug: #1354622
    Closes-Bug: #1339754
    Closes-Bug: #1358598
    Closes-Bug: #1358259
    Closes-Bug: #1357865
    Partial-Bug: #1357457
    Closes-Bug: #1357421
    Change-Id: Id2da7d7762ca954bd552dbf89a9ff28b144efb68

Changed in openstack-manuals:
status: In Progress → Fix Released
Revision history for this message
OpenStack Infra (hudson-openstack) wrote : Fix included in openstack/openstack-manuals 15.0.0

This issue was fixed in the openstack/openstack-manuals 15.0.0 release.

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