At Fri, 15 Oct 2010 13:38:16 +0300, Yuriy Kohut wrote: > > Hi, > > I'm using the following 'Getting Started' guide to configure simple cluster: > http://www.osrg.net/sheepdog/usage.html > > I have configured cluster on 1 node/box, so the first questions are: > Can I configure cluster on single node (1 box) under CentOS 5.5 x86_64 ? > Is it required at least 3 nodes/boxes ... ? > > I have faced with the following issue on my single-node cluster. I have rebooted the box after my first image creation. The following done for that: > - corosync is up and running > udp 0 0 192.168.128.195:5404 0.0.0.0:* 3541/corosync > udp 0 0 192.168.128.195:5405 0.0.0.0:* 3541/corosync > udp 0 0 226.94.1.1:5405 0.0.0.0:* 3541/corosync > > - sheep is up and running > tcp 0 0 0.0.0.0:7000 0.0.0.0:* LISTEN 3561/sheep > > - cluster is formatted with 1 copy only > #collie cluster format --copies=1 > > - the image with prelocated data is created > # qemu-img create sheepdog:test0 -o preallocation=data 4G > > > So after such siple steps I got: > # collie vdi list > name id size used shared creation time vdi id > ------------------------------------------------------------------ > test0 1 4.0 GB 4.0 GB 0.0 MB 2010-10-15 12:42 fd34af > > > Then I rebooted the box, and no image(s) are available for me after box came back. The vdi list just show nothing: > # collie vdi list > name id size used shared creation time vdi id > ------------------------------------------------------------------ > > and 'collie vdi list' never ends ... > corosync and sheep are still running. > > > Could somebody assist me with that. Sorry, the following patch will fixes the problem. = From: MORITA Kazutaka <morita.kazutaka at lab.ntt.co.jp> Subject: [PATCH] sheep: call start_recovery when cluster restarts with one node Sheepdog recovers objects before starting a storage service, and the routine is called when nodes are joined. However If sheepdog consists of only one node, no node doesn't send join messages, so start_recovery doesn't called. This patch fixes the problem. Signed-off-by: MORITA Kazutaka <morita.kazutaka at lab.ntt.co.jp> --- sheep/group.c | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/sheep/group.c b/sheep/group.c index ba8cdfb..86cbdb8 100644 --- a/sheep/group.c +++ b/sheep/group.c @@ -1226,6 +1226,9 @@ static void __sd_confchg_done(struct cpg_event *cevent) update_cluster_info(&msg); + if (sys->status == SD_STATUS_OK) /* sheepdog starts with one node */ + start_recovery(sys->epoch, NULL, 0); + return; } -- 1.5.6.5 |