From 25ecf54e6f1828c3e4c5af10493765356c5f997c Mon Sep 17 00:00:00 2001 From: Josh Durgin Date: Thu, 14 Apr 2022 02:42:46 -0400 Subject: [PATCH] doc/releases/quincy: add rbd release notes [ idryomov: mention notrim option, minor nits ] Signed-off-by: Josh Durgin Signed-off-by: Ilya Dryomov --- doc/releases/quincy.rst | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) diff --git a/doc/releases/quincy.rst b/doc/releases/quincy.rst index 2acc05919fd9f..c787d99287939 100644 --- a/doc/releases/quincy.rst +++ b/doc/releases/quincy.rst @@ -98,6 +98,7 @@ Dashboard RADOS ~~~~~ + * OSD: Ceph now uses `mclock_scheduler` for BlueStore OSDs as its default `osd_op_queue` to provide QoS. The 'mclock_scheduler' is not supported for Filestore OSDs. Therefore, the default 'osd_op_queue' is set to `wpq` @@ -142,7 +143,27 @@ RADOS RBD block storage ~~~~~~~~~~~~~~~~~ -## TODO +* rbd-nbd: `rbd device attach` and `rbd device detach` commands added, + these allow for safe reattach after `rbd-nbd` daemon is restarted since + Linux kernel 5.14. + +* rbd-nbd: `notrim` map option added to support thick-provisioned images, + similar to krbd. + +* Large stabilization effort for client-side persistent caching on SSD + devices, also available in 16.2.8. For details on usage, see: + + https://docs.ceph.com/en/quincy/rbd/rbd-persistent-write-log-cache/ + +* Several bug fixes in diff calculation when using fast-diff image + feature + whole object (inexact) mode. In some rare cases these + long-standing issues could cause an incorrect `rbd export`. Also + fixed in 15.2.16 and 16.2.8. + +* Fix for a potential performance degradation when running Windows VMs + on krbd. For details, see `rxbounce` map option description: + + https://docs.ceph.com/en/quincy/man/8/rbd/#kernel-rbd-krbd-options RGW object storage ~~~~~~~~~~~~~~~~~~ -- 2.39.5