explain what an inline xattr is and how it relates to omap

The logic of the configuration flags related to xattr is clarified to define what an inline xattr is and when storing in the object map is preferred.

http://tracker.ceph.com/issues/4617 refs #4617

Signed-off-by: Loic Dachary <loic@dachary.org>
Merge pull request #184 from dachary/wip-4617

explain what an inline xattr is and how it relates to omap
README: fix dependency lists

1) automake appeared twice
2) make apt-get command match the list
Revert "mds: trigger tableserver active/recovery hook even for self"

This reverts commit 968c6c0c9408b33904041e5ddbd9ea738e831713.

This will trigger the 'ready' message twice when we restart, because we
will trigger in both recovery_done() and handle_mds_recovery().

Signed-off-by: Sage Weil <sage@inktank.com>
mds: initialize tableservers/clients on mds creation

The handle_mds_recovery(who) path initializes the anchorclients by having
the server send a 'ready' message on recovery when the server is active
and a peer becomes active.  Similarly, recovery_done() does the same when
the server becomes active.  However, this misses the creation path.  Handle
that explicitly in boot_create.

Fixes: #4619
Signed-off-by: Sage Weil <sage@inktank.com>
Merge remote-tracking branch 'origin/wip-4619'

Reviewed-by: Greg Farnum <greg@inktank.com>