Re: CephFS no longer mounts and asserts in MDS after upgrade to 0.67.3

["Yan, Zheng" <ukernel@xxxxxxxxx>]

On Thu, Sep 12, 2013 at 3:26 AM, Oliver Daudey <oliver@xxxxxxxxx> wrote:
> Hey Yan,
>
> Just confirming that creating fresh pools and doing the newfs on those
> fixed the problem, while restarting the OSDs didn't, thanks again!  If
> you come up with a permanent fix, let me know and I'll test it for you.
>
>

Here is the patch, thanks for testing.
---
commit e42b371cc83aa0398d2c288d7a25a3e8f3494afb
Author: Yan, Zheng <zheng.z.yan@xxxxxxxxx>
Date:   Thu Sep 12 09:50:51 2013 +0800

    mon/MDSMonitor: don't reset incarnation when creating newfs
   
    Signed-off-by: Yan, Zheng <zheng.z.yan@xxxxxxxxx>

diff --git a/src/mon/MDSMonitor.cc b/src/mon/MDSMonitor.cc
index 9988d8c..b227327 100644
--- a/src/mon/MDSMonitor.cc
+++ b/src/mon/MDSMonitor.cc
@@ -947,6 +947,7 @@ bool MDSMonitor::prepare_command(MMonCommand *m)
       ss << "this is DANGEROUS and will wipe out the mdsmap's fs, and may clobber data in the new pools you specify.  add --yes-i-really-mean-it if you do.";
       r = -EPERM;
     } else {
+      newmap.inc = pending_mdsmap.inc;
       pending_mdsmap = newmap;
       pending_mdsmap.epoch = mdsmap.epoch + 1;
       create_new_fs(pending_mdsmap, metadata, data);

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