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Illumos #3137 L2ARC compression #1622

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merged 2 commits into from
Aug 9, 2013

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3137 L2ARC compression
Reviewed by: George Wilson george.wilson@delphix.com
Reviewed by: Matthew Ahrens mahrens@delphix.com
Approved by: Dan McDonald danmcd@nexenta.com

References:
illumos/illumos-gate@aad0257
https://www.illumos.org/issues/3137
http://wiki.illumos.org/display/illumos/L2ARC+Compression

Notes for Linux port:

A l2arc_nocompress module option was added to prevent the
compression of l2arc buffers regardless of how a dataset's
compression property is set. This allows the legacy behavior
to be preserved.

Ported by: James H james@kagisoft.co.uk
Signed-off-by: Brian Behlendorf behlendorf1@llnl.gov
Issue #1379

3137 L2ARC compression
Reviewed by: George Wilson <george.wilson@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Approved by: Dan McDonald <danmcd@nexenta.com>

References:
  illumos/illumos-gate@aad0257
  https://www.illumos.org/issues/3137
  http://wiki.illumos.org/display/illumos/L2ARC+Compression

Notes for Linux port:

A l2arc_nocompress module option was added to prevent the
compression of l2arc buffers regardless of how a dataset's
compression property is set.  This allows the legacy behavior
to be preserved.

Ported by: James H <james@kagisoft.co.uk>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes openzfs#1379
3964 L2ARC should always compress metadata buffers
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>

References:
  https://www.illumos.org/issues/3964

Ported-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes openzfs#1379
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2 participants