wip-mon-docs: Better explain required number of monitors & how to troubleshoot a monitor
Signed-off-by: Joao Eduardo Luis <joao.luis@inktank.com>
Reviewed-by: Loic Dachary <loic@dachary.org>
Previous commit (047287afbe) broke
formatting on the formula, and also made mixed formula and text oddly,
which on second thought didn't look too good.
Add the note about the power of two to the following paragraph
instead, in prose.
Signed-off-by: Florian Haas <florian@hastexo.com>
Following an IRC discussion, it emerged that it would be helpful
to explain the merit of choosing a number of PGs per pool that is
a power of two, to keep PGs at roughly equal sizes in case of
PG splits.
See http://irclogs.ceph.widodh.nl/index.php?date=2014-03-12 for the
original discussion.
Signed-off-by: Florian Haas <florian@hastexo.com>
Include erasure code information. A choice is made to display properties
that should be documented as part of the erasure code plugin
interface (erasure-code-k for instance). However, there only is one
plugin at the moment. Furthermore, erasure-code-k and erasure-code-m are
the two properties that the system administrator will want to tweak when
playing with erasure coded pools for the first time. It is probably
better to document them in a very visible place for this reason.
http://tracker.ceph.com/issues/7548 refs #7548
Signed-off-by: Loic Dachary <loic@dachary.org>
--osd-pool-default-crush-replicated-ruleset replaces
--osd-pool-default-crush-rule
If --osd-pool-default-crush-rule is set it takes precedence over
--osd-pool-default-crush-replicated-ruleset and a deprecation warning is
displayed.
The CrushWrapper::get_osd_pool_default_crush_replicated_ruleset helper is
used to implement this behaviour.
Signed-off-by: Loic Dachary <loic@dachary.org>
Replace the manually crafted ruleset in OSDMap::build_simple_crush_map*
with calls to add_simple_ruleset. The generated ruleset do not have the
same behavior but that presumably do not cause any backward
compatibility problem because they are only created when a new cluster
is being initialized.
The prototypes of OSDMap::build_simple* are modified to allow for a
return code and display of a human readable error message.
The --osd-min-rep and --osd-max-rep configuration options are removed :
they were only used in the code that was removed.
Signed-off-by: Loic Dachary <loic@dachary.org>
Allow warning to be disabled via ceph.conf. Link to the docs from the
warning detail. Add a section to the docs specifically about what to do
about the warning.
Signed-off-by: Sage Weil <sage@inktank.com>
The ceph-mon command usage is updated to document all of the ceph-mon
specific options.
The ceph tell usage examples for log and debug are using a deprecated syntax.
Signed-off-by: Loic Dachary <loic@dachary.org>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
