From a8c98c6109cbe4f260fee0ecb2863ca4adf14b36 Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Tue, 18 Feb 2020 17:49:16 -0600 Subject: [PATCH] doc/release/octopus: note about OSD restart time Signed-off-by: Sage Weil --- doc/releases/octopus.rst | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/doc/releases/octopus.rst b/doc/releases/octopus.rst index f8c2d065ab6..f280cba6bd5 100644 --- a/doc/releases/octopus.rst +++ b/doc/releases/octopus.rst @@ -31,10 +31,13 @@ Major Changes from Nautilus without any user intervention. The default values for new pools and RGW/CephFS metadata pools have also been adjusted to perform well for most users. - * BlueStore has received serveral improvements and performance + * BlueStore has received several improvements and performance updates, including improved accounting for "omap" (key/value) object data by pool, improved cache memory management, and a - reduced allocation unit size for SSD devices. + reduced allocation unit size for SSD devices. (Note that by + default, the first time each OSD starts after upgrading to octopus + it will trigger a conversion that may take from a few minutes to a + few hours, depending on the amount of stored "omap" data.) * Snapshot trimming metadata is now managed in a more efficient and scalable fashion. @@ -120,6 +123,13 @@ Instructions # systemctl restart ceph-osd.target + Note that the first time each OSD starts, it will do a format + conversion to improve the accounting for "omap" data. This may + take a few minutes to as much as a few hours (for an HDD with lots + of omap data). You can disable this automatic conversion with:: + + # ceph config set osd bluestore_fsck_quick_fix_on_mount false + You can monitor the progress of the OSD upgrades with the ``ceph versions`` or ``ceph osd versions`` commands:: -- 2.39.5