Bug 1509358 - [RHCS 3.y] Change default of rocksdb to no compression
Summary: [RHCS 3.y] Change default of rocksdb to no compression
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Ceph Storage
Classification: Red Hat Storage
Component: RADOS
Version: 3.0
Hardware: Unspecified
OS: Unspecified
medium
medium
Target Milestone: z2
: 3.0
Assignee: Josh Durgin
QA Contact: Parikshith
URL:
Whiteboard:
Depends On: 1548067
Blocks:
TreeView+ depends on / blocked
 
Reported: 2017-11-03 15:37 UTC by Mike Hackett
Modified: 2021-06-10 13:28 UTC (History)
9 users (show)

Fixed In Version: RHEL: ceph-12.2.4-4.el7cp Ubuntu: ceph_12.2.4-5redhat1xenial
Doc Type: Enhancement
Doc Text:
Clone Of:
Environment:
Last Closed: 2018-04-26 17:38:39 UTC
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2018:1259 0 None None None 2018-04-26 17:39:38 UTC

Description Mike Hackett 2017-11-03 15:37:32 UTC 
Description of problem:
Disable compression by default on rocksdb.

Current Default:

filestore_rocksdb_options = "max_background_compactions=8;compaction_readahead_size=2097152"

Recommended change for default disabling compression:

filestore_rocksdb_options = "max_background_compactions=8;compaction_readahead_size=2097152;compression=kNoCompression"
Comment 3 Greg Farnum 2017-11-03 16:07:13 UTC 
I do not believe disabling compression is an appropriate default. While it can help in some situations, compression reduces the amount of disk IO OSDs must perform.
Comment 6 Vikhyat Umrao 2017-11-10 14:25:23 UTC 
Upstream Luminous backport - https://github.com/ceph/ceph/pull/18860
Comment 8 Ken Dreyer (Red Hat) 2018-03-26 15:24:47 UTC 
PR 18860 landed in v12.2.2 upstream, so this bug will be resolved in the v12.2.4 rebase
Comment 19 errata-xmlrpc 2018-04-26 17:38:39 UTC 
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://access.redhat.com/errata/RHBA-2018:1259
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