Hello,
we are using Infiniband instead of Ethernet for cluster interconnection.
Instead of IPoIB (IP-over-InfiniBand Protocol) we want to use SDP
(Sockets Direct Protocol) as a mid layer protocol.
To connect the Ceph daemons to SDP without changing the Ceph code, the
LD_PRELOAD mechanism can be used.
To enable the LD_PRELOAD mechanism for the Ceph daemons only, a little
generic extension in the global section of /etc/ceph/ceph.conf would
be helpful, e.g.:
[global]
environment = LD_PRELOAD=/usr/lib64/libsdp.so.1
The appending patch adds 5 lines in the Bobtail (0.56.6) init script.
The init script will then read the environment setting and - if present -
call the Ceph daemons with the preceding environment string.
With best regards
Andreas Friedrich
----------------------------------------------------------------------
FUJITSU
Fujitsu Technology Solutions GmbH
Heinz-Nixdorf-Ring 1, 33106 Paderborn, Germany
Tel: +49 (5251) 525-1512
Fax: +49 (5251) 525-321512
Email: andreas.friedrich@xxxxxxxxxxxxxx
Web: ts.fujitsu.com
Company details: de.ts.fujitsu.com/imprint
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--- a/src/init-ceph.in 2013-05-03 21:31:07.000000000 +0200
+++ b/src/init-ceph.in 2013-05-06 10:56:56.000000000 +0200
@@ -212,6 +212,12 @@
# conf file
cmd="$cmd -c $conf"
+ environment=""
+ get_conf environment '' 'environment'
+ if [ ! -z "$environment" ]; then
+ cmd="env $environment $cmd"
+ fi
+
if echo $name | grep -q ^osd; then
get_conf osd_data "/var/lib/ceph/osd/ceph-$id" "osd data"
get_conf fs_path "$osd_data" "fs path" # mount point defaults so osd data
