[Moosefs-users] URGENT (sorry) : mfsmaster unkown error

[Samuel H. <sam...@an...>]

Hi there,

I am sorry to use this kind of mail subject, but it is really urgent. We 
are using MooseFS from 2 years without any problems, with a huge datastore.

Today, we just take down mfsmaster as usual (mfsmaster stop). Metadatas 
are clean and not corrupted. But, for the first time, we have an error 
on when starting mfsmaster:

root@mfs:/var/lib/mfs# mfsmaster start
working directory: /var/lib/mfs
lockfile created and locked
initializing mfsmaster modules ...
loading sessions ... ok
sessions file has been loaded
exports file has been loaded
mfstopology configuration file (/etc/mfstopology.cfg) not found - using 
defaults
loading metadata ...
loading objects (files,directories,etc.) ...
loading node: read error: ENOENT (No such file or directory)
init: file system manager failed !!!
error occured during initialization - exiting

Here the strace: http://pastebin.com/XaxhD9BL

I am sure I correctly shutdown mfsmaster and I never see this type of 
issue (we did many restarts). I tried to do "mfsmetarestore -a" and it 
finished with all clean, but I still have this error.

How can I start my mfsmaster again?

Thanks for tour help.

Best regards.
Sam

PS : sorry for double mails, the previous address was on the mfsmaster :)