The exclusive-lock could be transited transparently between clients
after finishing write operation. To disable "transparent" transition,
it needs to acquire the lock with RBD_LOCK_MODE_EXCLUSIVE.
Signed-off-by: Changcheng Liu <changcheng.liu@aliyun.com>
This commit adds the following commands to the "Configuring the iSCSI Target Using the Command Line" page: "systemctl enable rbd-target-gw" and "systemctl start rbd-target-gw"
Fixes: https://tracker.ceph.com/issues/45987
Signed-off-by: Zac Dover <zac.dover@gmail.com>
Modify the design of token bucket to save more tokens than burst value,
so as to support continuous burst. The desired burst duration can be
controlled by rbd_qos_XYZ_burst_seconds.
Fixes: https://tracker.ceph.com/issues/45313
Signed-off-by: wencong wan <wanwc@chinatelecom.cn>
It needs to create admin socket to use perf counter for
debug purpose. Remind the access right to directory.
Signed-off-by: Changcheng Liu <changcheng.liu@aliyun.com>
RTD does not support installing system packages, the only ways to install
dependencies are setuptools and pip. while ditaa is a tool written in
Java. so we need to find a native python tool allowing us to render ditaa
images. plantweb is able to the web service for rendering the ditaa
diagram. so let's use it as a fallback if "ditaa" is not around.
also start a new line after the directive, otherwise planweb server will
return 500 at seeing the diagram.
Signed-off-by: Kefu Chai <kchai@redhat.com>
When a snapshot-based image is non-primary, we will need to use
this implicit feature to ensure that writes and maintenance
operations cannot be performed against the image.
Signed-off-by: Jason Dillaman <dillaman@redhat.com>
If libvird is under Selinux/Apparmor enforced mode, libvirtd
may not be enable to do some operatoins on the rbd image. It
need remind this in document.
Signed-off-by: Changcheng Liu <changcheng.liu@aliyun.com>
A discussion on the ceph-users list uncovered a bit of uncertainty
about how exclusive locking works:
https://www.mail-archive.com/ceph-users@lists.ceph.com/msg56910.html
Add a bit of background information about exclusive locks, and
cross-reference the documentatation on OpenStack, and on CephX.
Signed-off-by: Florian Haas <florian@citynetwork.eu>
this change silences the warning of
```
doc/rbd/qemu-rbd.rst:174: WARNING: Pygments lexer name 'guess' is not
known
```
see http://pygments.org/docs/lexers/, we should use "xml" for XML .
Signed-off-by: Kefu Chai <kchai@redhat.com>
* refs/pull/30475/head:
qa/standalone/ceph-helpers: default pg autoscale mode off for standalone
os/bluestore: fix objectstore_blackhole read-after-write
test,misc: do not specify pg_num per pool
mgr/volumes: do not specify pg_num
pybind/ceph_volume_client: do not specify pg_num for new pools
doc: remove all pg_num arguments to 'osd pool create'
mon: do not require pg_num to 'osd pool create'
common: default pg_autoscale_mode=on for new pools
Reviewed-by: xie xingguo <xie.xingguo@zte.com.cn>
Clean up the caching sections to match the current implementation and
clarify which sections apply only to librbd.
Signed-off-by: Jason Dillaman <dillaman@redhat.com>
Removed references to older OpenStack releases. Updated
documentation in regards to using QCOW2 as a virtual machine
disk type.
Fixes: https://tracker.ceph.com/issues/18197
Signed-off-by: James McClune <jmcclune@mcclunetechnologies.net>
