rbd/concurrent.sh: probe rbd module at start

There's no guarantee the rbd module is loaded when this script is
run, so add a line that loads it if necessary.

Signed-off-by: Alex Elder <elder@inktank.com>
Added -r option to usage

Added the -r option, which starts the radosgw and apache2 to access it
to the usage message.

Signed-off-by: Christophe Courtaut <christophe.courtaut@gmail.com>
doc: note openstack changes for Grizzly

These are just for the cinder configuration, nothing else changed.

Signed-off-by: Josh Durgin <josh.durgin@inktank.com>
os/WBThrottle: remove asserts in clear()

cur_ios, etc may not be zero due to an in progress
flush.

Signed-off-by: Samuel Just <sam.just@inktank.com>
Reviewed-by: Greg Farnum <greg@inktank.com>
rbd/kernel.sh: quit looking for snapshot sysfs entries

The sysfs entries for snapshots went away a while ago, and this
script used them to verify sizes matched what was expected.

Instead, look at the mapped size of the snapshot in the places
that used to look for the image's snapshot sysfs files.

Also, switch over to using "udevadm settle" rather than a delay to
wait for udev to do its thing.  Insert them at more appropriate
places--right after "rmd map" commands and before and after the
"rbd unmap" calls.

Stop doing the manual refresh calls as well.  The osd will trigger
refreshes whenever the image size or shapshot context changes.

Finally, the cleanup routine is called initially, when there really
isn't expected to be anything to clean up.  Change the rbd commands
to run there conditionally, only if the target of the command
already exists.

Signed-off-by: Alex Elder <elder@inktank.com>
doc: Removed FAQ doc. It's now in the wiki.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Removed FAQ from the index.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Updated text with new glossary terms.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Updated object storage quick start for S3-style subdomains.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Updated conf with ServerAlias for S3 subdomains.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Updated title to reflect glossary usage.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Updated to reflect glossary usage.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Updated title and syntax to reflect glossary usage.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
doc: Updated to reflect glossary usage.

Signed-off-by: John Wilkins <john.wilkins@inktank.com>
Merge git://github.com/ceph/ceph