From a6df7644b67f1a9aacff153d365acaf3e95afcf2 Mon Sep 17 00:00:00 2001 From: Sage Weil Date: Mon, 27 May 2013 21:16:46 -0700 Subject: [PATCH] PendingReleaseNotes: notes about enabling HASHPSPOOL Signed-off-by: Sage Weil --- PendingReleaseNotes | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/PendingReleaseNotes b/PendingReleaseNotes index 021204898ad36..f62419f734b81 100644 --- a/PendingReleaseNotes +++ b/PendingReleaseNotes @@ -4,3 +4,12 @@ to the monitors (who process failure reports) and not OSDs. If you have adjusted these settings, please update your ``ceph.conf'' accordingly. + +- New pools now have the HASHPSPOOL flag set by default to provide + better distribution over OSDs. Support for this feature was + introduced in v0.59 and Linux kernel version v3.9. If you wish to + access the cluster from an older kernel, set the 'osd pool default + flag hashpspool = false' option in your ceph.conf prior to creating + the cluster or creating new pools. Note that the presense of any + pool in the cluster with the flag enabled will make the OSD require + support from all clients. \ No newline at end of file